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Maitry Instruments & Control
   Shop No. 42, 1st Floor, Akshar Shopping Center, Road No. 1,
   Udyognagar, Udhana, Surat - 394 210, Gujarat, India
                                                                                         www.maitryinstruments.com
   Mobile: +(91)-9825570174, Mail id:- mailtryst@yahoo.in


                                                                       Belt Monitoring Switches
                                                                         For Protection of Conveyors
Electronic Speed Switches :
Protection against Zero / Under / Over speed condition
Features
= Under / Over / Zero speed protection.
= Cast Al / Poly carbonate / Polyester enclosure.
= Multi range model for reducing inventory. Range 5 to
  5000 RPM selectable.
= Built in initial start up Nuisance time delay.
= Contact 1 NO+1NC, 2 NO+2NC.
= 4 to 20 mA retransmission output.
= IP65 grade protection.
= Digital display models.
= Non contact type sensor probe. Size :
  M18/M30/M50/M80
= Intrinsically safe model available.
= Sensor probe with extension stand.




Electronic Belt Loading Monitor
Model : BLM5511
Application
= To monitor load as well as well as speed of the conveyor.




                                               SELECTION TABLE
                                        Please follow the nomenclature as below.
                                        ESM 4411 - TD - CA - 55 - 11 - 30
 BASIC TYPE                                                                        PROBE SIZE
 ESM4410 - Speed Indicator                                                         M18, M25, M30, M50
 ESM4411 - Under speed monitor
                                                                            OUTPUT CONTACT COMBINATION
 ESM4412 - Over speed monitor
                                                                            11-1 NO + 1 NC
 ESM4413 - Under + Over speed monitor
                                                                            22-2 NO + 2 NC
 ESM4414 - Under speed with extension stand
                                                                       PROTECTION GRADE
 OPERATIONAL FEATURES                                                  IP 30, IP55, IP 65
 TD - Built in initial bypass Delay                             ENCLOSURE TYPE
 NTD - Nuisance Delay                                           MS - Sheet Metal CA - Cast Aluminum
 NITD - Combined Nuisance + Initial Delay                       PL - Plastic / Poly carbonate
 DD - Digital Display                                           SS - Stainless Steel for Chemical
 S - Selector switch for multi range.

Heavy duty Limit Switches
Model - HLS 802
Features
= Heavy duty enclosure for dusty environment.
= Cast Al / cast iron.
= Robust spring to absorb the belt impact.
= Grade of protection IP65.
= Heavy duty contacts 16 Amp @ 240VAC
= Contact combination 1No + 1NC / 2NO + 2NC / 4 NC
= Retaining type Screws.
www.maitryinstruments.com


                                                                        Belt Monitoring Switches
                                                                           For Protection of Conveyors


                                                                Pull Cord Switch
                                                                Features
                                                                = Heavy duty enclosure for dusty environment.
                                                                = Cast Al / cast iron / Poly carbonate enclosure.
                                                                = Retaining type screws.
                                                                = Heavy duty contacts 16 Amp rating 240VAC,
                                                                = Contact combination 1NO+1NC / 2NO+2NC.
                                                                = Manual reset.
                                                                = Models available with junction box / with indicating
                                                                  lamp / with mechanical flag.




                                                                Ordering Code
                                                                S B S 3 0 -      1 - C A - T B - F - L -
                                                                                                    flag
                                                                     Basic        Enclosure         Indicator
                                                                    Model         CA - Cast Al.
                                                                                                           Indicating
                                                                                  PL - Poly Carbonate
                                                                 1 + 1 NO + 1 NC                               Lamp
                                                                                  CI - Cast Iron
                                                                 2 + 2 NO + 2 NC
                                                                                                 With Junction Box




Belt Sway Switch
Features
= Heavy duty enclosure for dusty environment.
= Cast Al / cast iron / Poly carbonate enclosure.
= Ball / bush bearing options for roller & cam shaft.
= Grade of protection IP65.
= Heavy duty contact 16 Amp @240VAC
= Contact combination 1 NO+1NC / 2NO+2NC.
= Auto reset type.
= Retaining type screws.
= Robust spring to absorb the belt impact.




 Ordering Code
    S B S 4 0    -   1   -   C A   -   T B    -   L     -   D

 Basic Model                         With Indicating
 1- 1 No. + 1 NC                   Junction Lamp
 2- 2 No. + 2 NC                     Box
                                            Handle roller
 Enclosure                                   & shaft with
 CA - Cast Aluminum                         ball bearings
 PL - Poly Carbonate
 CI - Cast Iron
www.maitryinstruments.com


                                                                      Signal Isolaters & Converters

Specifications
l Din Rail mounted signal converter / isolator is available in
  different input.
l 0-5mVDC / 0-20mVDC / 0-50mVDC / 0-100mVDC / 0
  10mADC / 0-20mADC / 4-20mADC / 0-5 VDC / 1-5
  VDC / 0-10VDC / 0-5Amp / 0-1 Amp or customer
  specified, up to 3 outputs are available with all port
  isolation i. e. supply to input / supply to output / input to
  output and output to output channel isolation.
l Unit is available in 24VDC, 110VAC and 230VAC supply.



                                                                                                      Level Sensors
Rf Admittance Type                                                Ultrasonic Sensors
l Three Element Coat Guard Technology                             l   Size              :   M18/30
  Ignores material build - up on Probe                            l   Supply            :   24VDC
l Applications   : Sand levels, Cement, Lime                      l   Output            :   0-10 VDC / 4-20 mA
  etc.                                                            l   Sensing Dia       :   600mm /1500mm
l Supply         : 24 VDC, 230 VAC
l Output         : 2No+2NC
                                                                                    Photo Electric Level Sensor
                                                                                    l   Infrared Sensor for liquid Level detection
                                                                                    l   Ex-proof
                                                                                    l   Supply               : 24 VDC
             Vibrating Fork Type                                                    l   Output               : PNP/NPN Type
             l   Suitable for highly dusty environment                              l   Dimension            : 3/8 x74 mm
                                                                                    l   Mounting Material : Polysulphone




Rotating Paddle Type
l   Motor torque adjustable
                                                                                              Magnetic Level Switch
l   Special Clutch mechanism to protect Motor
                                                                                              l   2,3,4 point Switching Available
l   Sealed bearing for Rotating shaft.


                                                                                                  Rotary Encoders

Encoder is light sensor that detects and converts mechanical      means the number of pulse which is output from 1 revolution
transfer or displacement into electric signal. It detects the     of the rotating shaft of rotary encoder. In case of incremental
position, speed, angle by means of converting analog signal       encoder, it can be indicated in the number of rotating slits, in
generated from a revolution of the shaft into digital signal by   case of Absolute encoder, it can be indicated in number of
the internal fixed circuit.                                       divisions or bit High resolution from 100 to 6000 P/R
Output Circuit Types :                                            Power Voltage : 5 VDC/24 VDC
1) Open Collector 2) Push Pull Output 3) Line Driver              Outer Diameter : 30,40,48,58 mm
Output Channels                                                   Shaft Diameter : 6mm, 8mm
1. A,B Phase
The output signal of A, B phase are output with 90 of phase
difference. It is the signal to discriminate the rotation
direction.
2. Z Phase
One Z phase is output per one rotation, which is called origin
signal.
Resolution (Pulses per Revolutions)
www.maitryinstruments.com


                                                                              Inductive Proximity Switches
                                                                         Intelligent Sensors in Automated Processes

   Maitry Instruments & Control offers you a                                Miniature Sensors
                                                                            Our miniature sensors with short circuit protection
   wide range of high quality Proximity Switches.                           M 8 x 30 mm & M 12 x 30 mm with LED Indication
   these are used in all areas of control &                                 Types of Inductive Proximity Switches
                                                                            AC Proximity Switches - Type PS 12
   automation such as Machine Tools, Packaging,                             These are available in 2 wire and 3 wire as shown. These
   Injection Moulding, Automobile Industries,                               switches are to be connected in series with the load.
   Process Industries, Textile Industries and                               Operating Voltage : 110VAC/240VAC/90-240VAC
     other Automated Systems.                                                           Logic : NO/ NC/CO
                                                                                        Load : up to 500 MA
Operating Principle
The LC oscillator circuit generates the electromagnetic field
over the active face, energy is drawn from oscillator. resulting                   2 Wire                         3 Wire
                                                                                                            p                       p
                                                                                                                       RED
damping of the oscillator. This Change is detected by the                              RED
                                                                                                                      GREEN
electronic circuit to give output signal.                                          IPS BLACK                      IPS BLACK
Advantages                                                                                          LOAD                            LOAD
                                                                                                                       LOAD
l Non Contact Operation          l Corrosion Resistance
                                                                                                            N                       N
l High Operating Frequency l IP 67 Grade of Protection
l Bounce Free Operation          l Repeat accuracy ± 0.02 mm
l Vibration Resistance           l Long Life
Enclosure                                                                   DC Proximity Switches - Type PS 13
Proximity Switches are available in Tubular shape made of                   These are available in 3 wires as shown. Special models of 2
BRASS , S.S., M.S. Other odd Shape Switches or as per                       wires and 4 wires are available on request
customer requirement can be made available on request.                      Operating Voltage : 5V to 30V DC (up to 220V DC on request)
Operating Temperature                                                                  Logic : NPN / PNP
Operating Temperature of Proximity Switches is O0c to 55 c.                             Load : up to 400 MA
Temperature up to 1000c can be manufactured on request.
Protection
AC Switches are protected against transients and surges. DC                        3 Wire                   +     3 Wire                +
                                                                                   NPN                            PNP
Switches are protected against Short Circuit and Reverse                                    RED            LOAD            RED
Polarity.                                                                           IPS GREEN                      IPS GREEN
                                                                                            BLACK                          BLACK
Mounting                                                                                                                            LOAD
In case of Flush Mounting the sensing distance is limited to
                                                                                                             _                          _
0.8 times of the sensing distance for Non Flush Type.

                                                       3xd
                    d    d d
                                        2xsn




                                                        d
                                                                           Dimensional & Technical Specification
                                                                                 Size    Sensing distance                      Load Current
            Steel




                                               Steel                             mm          in mm                                in ma
                                                                                        Flush Non Flush                    For AC     For DC
                                                                                Ø 6.5      1        -                         -        250
Tubular Switches : Enclosure Type                                                M8       1.5       2                         -        250
 Size      12                 18   24             30         36     50          M12       2.5      3.5                      250        250
 DC        50                 70   65             70         70     65          M18        5        7                       400        250
 AC        80                 70   70             70         70     65          M30       10       12                       400        250
                                                                                M 36      15       18                       400        250
                                                                                M50       15       20                       400        400
                                                              LED
                                                                                M80       30       35                         -        400
                                                                              17X17X36         7                              -        250
                                                                              20X20X38         7                              -        250
                                                 L                            26X12X40        3.5                             -        250
                        A/F                                                  40X40X112.5 13        20                       400        400
www.maitryinstruments.com


                                                                Inductive Proximity Switches
                                                            Intelligent Sensors in Automated Processes




          M5 x 30                                M8 x 45                                     M18 x 80




            M30 x 80                    M12 x 50                      M50 x 80




                                             20 x 20 x 38                               17 x 17 x 36




           40 x 40 x 112-5                  20 x 20 x 50                 26 x 12 x 40                   20 x 16 x 12




      8 x 8 x 40              Gap Size : 10 mm                           40 x 40 x 112.5




    50 x 25 x 10             50 x 22 x 42                                T Shape : 10 mm                25 x 25 x 65


                                                              Capacitive Proximity Switches

l Adjustment Sensitivity
l Size : M18, M30
l Supply : 10-30 VDC/ 240 VAC
l Logic : PNP / NPN / NO / NC
l Enclosure : Brass / Plastic
www.maitryinstruments.com


                                                                  Optical Proximity Switches
                                                                                           Diffuse Scan Sensor
      Maitry       Instruments & Control offers
        Optical Proximity Switches with
      modulated infrared beam consisting of a
      transmitter and a receiver. The state-of-the-art
                                                                17 x 50 x 55
        modulation and detection circuit ensures                                      M18 x 55             M12 x 60
      reliable operation of sensors in hostile
      environment and are unaffected by                                                   Through Scan Sensor
      temperature variation and stray light.
Applications
These are widely used for sensing metals and non-metals like
wood, glass, paper and water, etc.
These switches are used for automation in various industries
like pharmaceutical machines, packaging machines, food
processing, textile machines, conveyor systems, Automobile                                           M18 x 75
engineering industries, Chemical Plants, Cement Plants,
                                                                    17 x 50 x 55
Safety and Security appliance.
Specifications                                                                        Retro - Reflective Sensor
l Supply                   : 10-30 Volts DC
l Output                   : NPN or PNP type
l O/P Current              : 200 mA (Max.)
l No Load Current          : 5 - 10 mA approx.
l Drop across switch       : Less than 1 Volt
l Switching frequency : 100 Hz., 2KHZ
l Protection               : Reverse Polarity and                                                   17 x 50 x55
                                                                   M18 x 55
                               Short Circuit Protection

                                                                                             Fork/Slot Sensor




                                                                     60 x 20 x15


             Fork Gap : 50, 5, 20, & 3 mm.                                            70 x 50 x15        70 x 50 x15
                                                 90 x 70 x 15



                                                                Magnetic Proximity Switches
Any Shape/ Any Size
2 Wire, 3 Wire D. C. version Available
www.maitryinstruments.com



                                                              Switching Mode Power Supplies
    Maitry Instruments & Control Offers you a wide               Salient Features
    range of high quality Switching Mode Power                   l Low cost, high reliability.
    Supplies. These are used in all areas of control and         l High efficiency and high working temperature
    automation such as Machine tools, Packaging,                 l Compact size, lightweight
    Injection Moulding, Automobile Industries,                   l 100% full load burn - in test.
    Process Industries and other Automated Systems.              l Short circuit / overload protected / over voltage
                                                                    protected.
                                                                 l Built-in EMI filter, low ripple noise.
                                                                 Specification
                                                                 Input voltage                 : 90 to 270 AVC
                                                                 Input frequency               : 47 to 63 Hz
                                                                 Inrush current                : Cold start Limited by NTC
                                                                                                 thermistor
                                                                 Overload protection           : Constant voltage, constant
                                                                                                 current
                                                                                                 105% to 120% output
                                                                                                 foldback limiting.
                                                                 Holdup time                   : Greater than 20 m sec.
                                                                 High voltage test             : I / P to O / P 3 KV 1 min.,
           162 x 96 x 105            130 x 70 x 55                                               I /P to O/P 1.5 KV 1 min.
                                                                 Safety standards              : As per UL 1012 requirement
                                     Model Available             EMC & EMI                     : Tested for FCC class A
                                   5VDC upto 20 Amp              Cooling                       : Natural Cooling
                                  12VDC upto 20 Amp              Noise suppression             : By means of heavy duty
                                  24VDC upto 20 Amp                                              EMI and RFI filter
                                  48VDC upto 10 Amp                                              can with stand 2 kV noise
                                      60VDC - 5 Amp                                              between Line & N, L &
                                  Combination Models                                             Earth, N &E.
                                     are also available.         Operating Temperature         : 0 to 55 0C
                                                                  I/P voltage surge protection : By means of proper rating
                                                                                                 MOV
               140 x 80 x 65

                                                     Electromagnetic Vibrator Controllers

For Bowl / Liner feeders New Advance Version (CVCF)
Constant voltage, constant frequency controllers for smooth
vibration and constant feed rate irrespective of change in
supply voltage and frequency for Genset application.
Specification
Supply                 : 230 / 41 5 VAC 2 phase 50 Hz
Current                : 3/6/10/15/30 Amp
Voltage setting        : Via potentiometer / 4 to 20 mA
                          control signal                                             144 x 96 x 115
Retransmission O/p : 4 to 20 ma for PLC                        144 x 72 x 115                                96 x 96 x160
Protections            : Overload and fast acting fuses.




                                                              144 x 144 x 80                              160 x 160 x 240
www.maitryinstruments. com



                                                              Digital Timer
On Delay / Int / Cyclic Mode

Specifications

Display    : Single / Double Display type
Setting    : By front key pad / Thumbwheel type
Reset      : On front / power ON reset
Output     : 2 C/ O relay contact 5 Amp / 230VAC
Supply     : 230V / 110VAC +/- 10 %, 50 Hz
Size       : 48 X 48, 72 X 72, 96 X 96, 48 X 96
Range      : 0-9999 / Hr. sec / min
Optional   : Auto reset
             Single set / dual set point
             Memory facility


                                                             Weekly Timer

Common Features :
l RTC Format Display 00.00 to 23.59
l Bright red 0.56" seven segment display for time
  indication
l User-friendly programming using tactile switches
l Program enable provided
l Memory back-up in case of power failure for one week
l Operating Voltage range : 85V to 265V AC.
l 1 C/O relay rated for 10A @ 250V AC / 28V DC
  (Resistive)
l Dimension : 72 x 72 x 85 mm
l Program Steps : 4 / 8 /30



                                                           Digital Counters
           Event / Preset / Length Counters

Specifications

Setting  : Keypad / Thumbwheel
Range    : 999999 counts
Display  : Single /Double
Input    : PNP / NPN Proximity, Limit switch,
           Encoder or 230VAC pulse
Output   : 1 C/ O, Relay, 5 Amp / 230VAC
Reset    : Manual / Auto reset selectable by key pad
          (Reset time selectable by keys in auto mode)
Supply   : 230C / 110VAC +/- 10 %, 50 Hz
Size     : 48 X 48, 72 X 72, 96 X 96
Optional : Reset on back terminal
           Dual set point
           Programmable scale factor
          Up-down counter ( for encoder input)

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Maitry Instruments & Control, Surat, Process Control Instruments

  • 1. Maitry Instruments & Control Shop No. 42, 1st Floor, Akshar Shopping Center, Road No. 1, Udyognagar, Udhana, Surat - 394 210, Gujarat, India www.maitryinstruments.com Mobile: +(91)-9825570174, Mail id:- mailtryst@yahoo.in Belt Monitoring Switches For Protection of Conveyors Electronic Speed Switches : Protection against Zero / Under / Over speed condition Features = Under / Over / Zero speed protection. = Cast Al / Poly carbonate / Polyester enclosure. = Multi range model for reducing inventory. Range 5 to 5000 RPM selectable. = Built in initial start up Nuisance time delay. = Contact 1 NO+1NC, 2 NO+2NC. = 4 to 20 mA retransmission output. = IP65 grade protection. = Digital display models. = Non contact type sensor probe. Size : M18/M30/M50/M80 = Intrinsically safe model available. = Sensor probe with extension stand. Electronic Belt Loading Monitor Model : BLM5511 Application = To monitor load as well as well as speed of the conveyor. SELECTION TABLE Please follow the nomenclature as below. ESM 4411 - TD - CA - 55 - 11 - 30 BASIC TYPE PROBE SIZE ESM4410 - Speed Indicator M18, M25, M30, M50 ESM4411 - Under speed monitor OUTPUT CONTACT COMBINATION ESM4412 - Over speed monitor 11-1 NO + 1 NC ESM4413 - Under + Over speed monitor 22-2 NO + 2 NC ESM4414 - Under speed with extension stand PROTECTION GRADE OPERATIONAL FEATURES IP 30, IP55, IP 65 TD - Built in initial bypass Delay ENCLOSURE TYPE NTD - Nuisance Delay MS - Sheet Metal CA - Cast Aluminum NITD - Combined Nuisance + Initial Delay PL - Plastic / Poly carbonate DD - Digital Display SS - Stainless Steel for Chemical S - Selector switch for multi range. Heavy duty Limit Switches Model - HLS 802 Features = Heavy duty enclosure for dusty environment. = Cast Al / cast iron. = Robust spring to absorb the belt impact. = Grade of protection IP65. = Heavy duty contacts 16 Amp @ 240VAC = Contact combination 1No + 1NC / 2NO + 2NC / 4 NC = Retaining type Screws.
  • 2. www.maitryinstruments.com Belt Monitoring Switches For Protection of Conveyors Pull Cord Switch Features = Heavy duty enclosure for dusty environment. = Cast Al / cast iron / Poly carbonate enclosure. = Retaining type screws. = Heavy duty contacts 16 Amp rating 240VAC, = Contact combination 1NO+1NC / 2NO+2NC. = Manual reset. = Models available with junction box / with indicating lamp / with mechanical flag. Ordering Code S B S 3 0 - 1 - C A - T B - F - L - flag Basic Enclosure Indicator Model CA - Cast Al. Indicating PL - Poly Carbonate 1 + 1 NO + 1 NC Lamp CI - Cast Iron 2 + 2 NO + 2 NC With Junction Box Belt Sway Switch Features = Heavy duty enclosure for dusty environment. = Cast Al / cast iron / Poly carbonate enclosure. = Ball / bush bearing options for roller & cam shaft. = Grade of protection IP65. = Heavy duty contact 16 Amp @240VAC = Contact combination 1 NO+1NC / 2NO+2NC. = Auto reset type. = Retaining type screws. = Robust spring to absorb the belt impact. Ordering Code S B S 4 0 - 1 - C A - T B - L - D Basic Model With Indicating 1- 1 No. + 1 NC Junction Lamp 2- 2 No. + 2 NC Box Handle roller Enclosure & shaft with CA - Cast Aluminum ball bearings PL - Poly Carbonate CI - Cast Iron
  • 3. www.maitryinstruments.com Signal Isolaters & Converters Specifications l Din Rail mounted signal converter / isolator is available in different input. l 0-5mVDC / 0-20mVDC / 0-50mVDC / 0-100mVDC / 0 10mADC / 0-20mADC / 4-20mADC / 0-5 VDC / 1-5 VDC / 0-10VDC / 0-5Amp / 0-1 Amp or customer specified, up to 3 outputs are available with all port isolation i. e. supply to input / supply to output / input to output and output to output channel isolation. l Unit is available in 24VDC, 110VAC and 230VAC supply. Level Sensors Rf Admittance Type Ultrasonic Sensors l Three Element Coat Guard Technology l Size : M18/30 Ignores material build - up on Probe l Supply : 24VDC l Applications : Sand levels, Cement, Lime l Output : 0-10 VDC / 4-20 mA etc. l Sensing Dia : 600mm /1500mm l Supply : 24 VDC, 230 VAC l Output : 2No+2NC Photo Electric Level Sensor l Infrared Sensor for liquid Level detection l Ex-proof l Supply : 24 VDC Vibrating Fork Type l Output : PNP/NPN Type l Suitable for highly dusty environment l Dimension : 3/8 x74 mm l Mounting Material : Polysulphone Rotating Paddle Type l Motor torque adjustable Magnetic Level Switch l Special Clutch mechanism to protect Motor l 2,3,4 point Switching Available l Sealed bearing for Rotating shaft. Rotary Encoders Encoder is light sensor that detects and converts mechanical means the number of pulse which is output from 1 revolution transfer or displacement into electric signal. It detects the of the rotating shaft of rotary encoder. In case of incremental position, speed, angle by means of converting analog signal encoder, it can be indicated in the number of rotating slits, in generated from a revolution of the shaft into digital signal by case of Absolute encoder, it can be indicated in number of the internal fixed circuit. divisions or bit High resolution from 100 to 6000 P/R Output Circuit Types : Power Voltage : 5 VDC/24 VDC 1) Open Collector 2) Push Pull Output 3) Line Driver Outer Diameter : 30,40,48,58 mm Output Channels Shaft Diameter : 6mm, 8mm 1. A,B Phase The output signal of A, B phase are output with 90 of phase difference. It is the signal to discriminate the rotation direction. 2. Z Phase One Z phase is output per one rotation, which is called origin signal. Resolution (Pulses per Revolutions)
  • 4. www.maitryinstruments.com Inductive Proximity Switches Intelligent Sensors in Automated Processes Maitry Instruments & Control offers you a Miniature Sensors Our miniature sensors with short circuit protection wide range of high quality Proximity Switches. M 8 x 30 mm & M 12 x 30 mm with LED Indication these are used in all areas of control & Types of Inductive Proximity Switches AC Proximity Switches - Type PS 12 automation such as Machine Tools, Packaging, These are available in 2 wire and 3 wire as shown. These Injection Moulding, Automobile Industries, switches are to be connected in series with the load. Process Industries, Textile Industries and Operating Voltage : 110VAC/240VAC/90-240VAC other Automated Systems. Logic : NO/ NC/CO Load : up to 500 MA Operating Principle The LC oscillator circuit generates the electromagnetic field over the active face, energy is drawn from oscillator. resulting 2 Wire 3 Wire p p RED damping of the oscillator. This Change is detected by the RED GREEN electronic circuit to give output signal. IPS BLACK IPS BLACK Advantages LOAD LOAD LOAD l Non Contact Operation l Corrosion Resistance N N l High Operating Frequency l IP 67 Grade of Protection l Bounce Free Operation l Repeat accuracy ± 0.02 mm l Vibration Resistance l Long Life Enclosure DC Proximity Switches - Type PS 13 Proximity Switches are available in Tubular shape made of These are available in 3 wires as shown. Special models of 2 BRASS , S.S., M.S. Other odd Shape Switches or as per wires and 4 wires are available on request customer requirement can be made available on request. Operating Voltage : 5V to 30V DC (up to 220V DC on request) Operating Temperature Logic : NPN / PNP Operating Temperature of Proximity Switches is O0c to 55 c. Load : up to 400 MA Temperature up to 1000c can be manufactured on request. Protection AC Switches are protected against transients and surges. DC 3 Wire + 3 Wire + NPN PNP Switches are protected against Short Circuit and Reverse RED LOAD RED Polarity. IPS GREEN IPS GREEN BLACK BLACK Mounting LOAD In case of Flush Mounting the sensing distance is limited to _ _ 0.8 times of the sensing distance for Non Flush Type. 3xd d d d 2xsn d Dimensional & Technical Specification Size Sensing distance Load Current Steel Steel mm in mm in ma Flush Non Flush For AC For DC Ø 6.5 1 - - 250 Tubular Switches : Enclosure Type M8 1.5 2 - 250 Size 12 18 24 30 36 50 M12 2.5 3.5 250 250 DC 50 70 65 70 70 65 M18 5 7 400 250 AC 80 70 70 70 70 65 M30 10 12 400 250 M 36 15 18 400 250 M50 15 20 400 400 LED M80 30 35 - 400 17X17X36 7 - 250 20X20X38 7 - 250 L 26X12X40 3.5 - 250 A/F 40X40X112.5 13 20 400 400
  • 5. www.maitryinstruments.com Inductive Proximity Switches Intelligent Sensors in Automated Processes M5 x 30 M8 x 45 M18 x 80 M30 x 80 M12 x 50 M50 x 80 20 x 20 x 38 17 x 17 x 36 40 x 40 x 112-5 20 x 20 x 50 26 x 12 x 40 20 x 16 x 12 8 x 8 x 40 Gap Size : 10 mm 40 x 40 x 112.5 50 x 25 x 10 50 x 22 x 42 T Shape : 10 mm 25 x 25 x 65 Capacitive Proximity Switches l Adjustment Sensitivity l Size : M18, M30 l Supply : 10-30 VDC/ 240 VAC l Logic : PNP / NPN / NO / NC l Enclosure : Brass / Plastic
  • 6. www.maitryinstruments.com Optical Proximity Switches Diffuse Scan Sensor Maitry Instruments & Control offers Optical Proximity Switches with modulated infrared beam consisting of a transmitter and a receiver. The state-of-the-art 17 x 50 x 55 modulation and detection circuit ensures M18 x 55 M12 x 60 reliable operation of sensors in hostile environment and are unaffected by Through Scan Sensor temperature variation and stray light. Applications These are widely used for sensing metals and non-metals like wood, glass, paper and water, etc. These switches are used for automation in various industries like pharmaceutical machines, packaging machines, food processing, textile machines, conveyor systems, Automobile M18 x 75 engineering industries, Chemical Plants, Cement Plants, 17 x 50 x 55 Safety and Security appliance. Specifications Retro - Reflective Sensor l Supply : 10-30 Volts DC l Output : NPN or PNP type l O/P Current : 200 mA (Max.) l No Load Current : 5 - 10 mA approx. l Drop across switch : Less than 1 Volt l Switching frequency : 100 Hz., 2KHZ l Protection : Reverse Polarity and 17 x 50 x55 M18 x 55 Short Circuit Protection Fork/Slot Sensor 60 x 20 x15 Fork Gap : 50, 5, 20, & 3 mm. 70 x 50 x15 70 x 50 x15 90 x 70 x 15 Magnetic Proximity Switches Any Shape/ Any Size 2 Wire, 3 Wire D. C. version Available
  • 7. www.maitryinstruments.com Switching Mode Power Supplies Maitry Instruments & Control Offers you a wide Salient Features range of high quality Switching Mode Power l Low cost, high reliability. Supplies. These are used in all areas of control and l High efficiency and high working temperature automation such as Machine tools, Packaging, l Compact size, lightweight Injection Moulding, Automobile Industries, l 100% full load burn - in test. Process Industries and other Automated Systems. l Short circuit / overload protected / over voltage protected. l Built-in EMI filter, low ripple noise. Specification Input voltage : 90 to 270 AVC Input frequency : 47 to 63 Hz Inrush current : Cold start Limited by NTC thermistor Overload protection : Constant voltage, constant current 105% to 120% output foldback limiting. Holdup time : Greater than 20 m sec. High voltage test : I / P to O / P 3 KV 1 min., 162 x 96 x 105 130 x 70 x 55 I /P to O/P 1.5 KV 1 min. Safety standards : As per UL 1012 requirement Model Available EMC & EMI : Tested for FCC class A 5VDC upto 20 Amp Cooling : Natural Cooling 12VDC upto 20 Amp Noise suppression : By means of heavy duty 24VDC upto 20 Amp EMI and RFI filter 48VDC upto 10 Amp can with stand 2 kV noise 60VDC - 5 Amp between Line & N, L & Combination Models Earth, N &E. are also available. Operating Temperature : 0 to 55 0C I/P voltage surge protection : By means of proper rating MOV 140 x 80 x 65 Electromagnetic Vibrator Controllers For Bowl / Liner feeders New Advance Version (CVCF) Constant voltage, constant frequency controllers for smooth vibration and constant feed rate irrespective of change in supply voltage and frequency for Genset application. Specification Supply : 230 / 41 5 VAC 2 phase 50 Hz Current : 3/6/10/15/30 Amp Voltage setting : Via potentiometer / 4 to 20 mA control signal 144 x 96 x 115 Retransmission O/p : 4 to 20 ma for PLC 144 x 72 x 115 96 x 96 x160 Protections : Overload and fast acting fuses. 144 x 144 x 80 160 x 160 x 240
  • 8. www.maitryinstruments. com Digital Timer On Delay / Int / Cyclic Mode Specifications Display : Single / Double Display type Setting : By front key pad / Thumbwheel type Reset : On front / power ON reset Output : 2 C/ O relay contact 5 Amp / 230VAC Supply : 230V / 110VAC +/- 10 %, 50 Hz Size : 48 X 48, 72 X 72, 96 X 96, 48 X 96 Range : 0-9999 / Hr. sec / min Optional : Auto reset Single set / dual set point Memory facility Weekly Timer Common Features : l RTC Format Display 00.00 to 23.59 l Bright red 0.56" seven segment display for time indication l User-friendly programming using tactile switches l Program enable provided l Memory back-up in case of power failure for one week l Operating Voltage range : 85V to 265V AC. l 1 C/O relay rated for 10A @ 250V AC / 28V DC (Resistive) l Dimension : 72 x 72 x 85 mm l Program Steps : 4 / 8 /30 Digital Counters Event / Preset / Length Counters Specifications Setting : Keypad / Thumbwheel Range : 999999 counts Display : Single /Double Input : PNP / NPN Proximity, Limit switch, Encoder or 230VAC pulse Output : 1 C/ O, Relay, 5 Amp / 230VAC Reset : Manual / Auto reset selectable by key pad (Reset time selectable by keys in auto mode) Supply : 230C / 110VAC +/- 10 %, 50 Hz Size : 48 X 48, 72 X 72, 96 X 96 Optional : Reset on back terminal Dual set point Programmable scale factor Up-down counter ( for encoder input)
  • 9. www.maitryinstruments. com Digital Rpm Indicator / Controllers Specifications l Display : Single / Double l 4 digit non-contact (RPM indicator) l Bright red.0.5 seven segment display l Range: 1 RPM to 9999 RPM l Accuracy : +/- 1% of FS l User programmable speed limit trip point with keypad l 2 C/O relay output rated for 5A @ 240VAC /28VDC (Resistive) l Accepts NPN /PNP proximity switch inputs l Input : 1 pulse per revolutions / Scale Factor l Supply 110V / 230VAC Dimensions: 48 X 96, 72 X 72, 96 X 96 Alarm Annunciator Specifications Microprocessor based 8 / 16 /32 channel alarm annunciator accept input from potential free contacts, power supply available 230VAC or 24VDC or customer specify flashing rate 55/60 flash per minute, front key switch available for ACCEPT and TEST as well same function is available on back panel for remote operation, additional power contact through relay is available for alarm signal to connect warning light / hooter etc. Micro-processor Based Scanner Specifications l Micro processor Based Scanner is available in 8 /16 channel, sensor input available universal T/C type or RTD or analog signal (0-5V / 1-5V / 0-10mA / 4-20mA or resistance potentiometer) or mixed input sensors, individual channel input and high / low alarm is programmable from front key. l Available in 90-270 VAC or 24 VDC supply. l Isolated communication port for RS232 or RS 485 l Inbuilt 16 Relay output ( High or Low ) l Individual alarm indication LED ( 16 Channel ) l User programmable l Alarm logic l Relay grouping l Sensor break logic l Channel name 8 Character l Alphanumeric LCD display l Units display
  • 10. www.maitryinstruments. com AutoTuned PID Controllers Basic Features Multi-input and multi - range performance = Includes a new processing system, Expert PID, remarkably improved PID control efficiency; overshoot and undershoot are controlled effectively. = The keylock function can avoid erroneous operation resulting from set values or parameter settings. = High/Low alarm available as basic feature. Features : = PID, ON/OFF, Manual & PID modes. =Universal input. = Relay/SSR/Analog output.(Current & Voltage) = Size : 48x48, 48x96, 72x72, 96x96 =Heating /Cooling output available. = Auto tuning facility. =Retransmission output. Temperature Sensors Types of Thermocouples : 'K' (Chromel - Alumel ) ,'J' (Iron- Constantan). 'T' (Copper-Conslantan), 'E' (Chromel- Constantan), 'R' (Pt-Pt-13%-Rh) ; 'S' (Pt-p 10%-Rh), 'B' (Pt- 13%-Rh-Pt-6%-Rh) in Simplex. Duplex and Triplex. Types of Resistance Temperature Detectors : Pt-50, Pt-100, Pt 500, Pt-1000, NI-100, Cu-2000 in Simplex, Duplex and Triplex. Types of Insulations : Ceramic Insulation and Mineral Insulation. Types of Junctions : Grounded, Ungrounded (Isolated), Selection of Thermocouple Type as per temperature Types of Sheaths : Mild Steel, SS-304, SS-316, SS-310. SS- Temp. range Resolution 446. Inconel -600, Inconel - 800. Titanium. Cast- Iron, in C Type of Thermocuple in C Nickel, Ceramic (610), Recrystlised Alumina (KER-710), etc. - 40 to 760 'J' (Iron-Constantan) 1 Shapes & Sizes : Asper your requirement or application. - 40 to 1260 'K' (Chromel-Alumel) 1 Mounting Accessories : Thermocouple and RTD connectors, BSP / NPT / UNF/ Metric threaded Male - 184 to 371 'T' (Copper-Constantan) 1 Female adjustable ferrule fitting in Mild Steel/ Stainless - 50 to 1741 'R' ( Pt-Pt-13%-Rh) 1 Steel-304/316/Brass etc. All type of flanges available as per - 50 to 1767 'S' ( Pt-Pt-13%-Rh) 1 standard table and as per your requirement or application - 200 to 550 ( 100 othms RTD Pt-100 Bullb) 1 considering pressure in Mild Steel, Carbon Steel, Stainless Digital Temperature Indicator / Controllers Specifications Input sensor a. Thermocouple : Iron-constantan (Fe / con)-up to 4000C Chrome l- Alumel (Cr /Al)-up to 12000C Platinum-Platinum-Rhodium (Pt/Pt-Rh-13%) up to 16000C b. RTD : Resistance Temperature Detector ( Pt-100) low temperature & up to 4000C Accuracy : +/-0.5% of FSD Compensation : Cold junction compensation automatic for all thermocouple models Relay Output : One change over relay contact 5 Amp / 230VAC rating Control Action : ON-OFF or time proportional Control version : Single set point or Dual set point Power Supply : 230VAC+/-105.50Hz Max. Ambient temp.: 550C Setting : Keypad / Knob / Push to set Size : 48 X 48, 72 X 72, 96 X 96,48X96
  • 11. www.maitryinstruments. com Solid State Relays & Relay Modules Maitry Instruments & Control offers wide range of solid state relays. Solid state relay is a static electronic switch Input (Control) unlike in an electromechanical relay where switching Specifications Min. Max. Units takes place between two moving contacts, Switching Control Voltage Range 3 32 VDC in SSR takes place across the junction of semiconductor 75 240 VAC device. Devices are Triac or Thyristor for AC switching & 0 0 Transistor for DC switching. In most SSRs galvanic Input Current -40 C < ta < 80 C 20 mA separation is achieved by Optocouplers equipped with Turn off Voltage - 30 c < ta < 80 C 1 VDC integrated trigger circuit. (optotriac) provide the 4 VAC switching function required for the corresponding load Turn on Voltage - 40 C < ta < 80 C 75 260 VAC type. Isolation ( Input to Output, 10 OHMS Maitry Instruments & Control Manufacture SSRs Input to case Output to case ) from current rating 2A to 150 Amp. Output (load) Output Voltage : 240 v or 600 VAC. DC output relays with rating 110 VDC 10 Amp. to 100Amp. Specifications Min. Max. Units Output Current rating with heat sink 0.05 10 25 AMPS 15,40,60 RMS Load Voltage rating 25 480 VAC Relay Modules Relay modules are available like 2/4/8/16 channel with ( RMS ) base with fuse protection, Relay O/p = 1C/o / 2C/o Frequency rang 47 70 Hz contacts. Surge Current rating ( 20ms ) at 40 amp type 425 AMP Over voltage rating ( transisent peak ) 1200 V Peak Thyristrised Power Controller For the electrical heating system to control the temperature at Energy conservation + Better results the set point by switching contractors has many disadvantages, such as wear and tear, limited life of General Specification contractor, noisy operation. Besides these it has limited Input : Single/Three phase AC 50 Hz. accuracy due to limitation of speed of operation, hence loss Output : 0-95% of rated input. (lockable of power. All above mentioned disadvantages are eliminated 50-100%) by SCS Thyristor Controller. Control Signal : Local-Multiturn potentio meter. Applications Ambient Temperature : 450 C Max. l All types of Electrical Heating Systems. Standard Capacities l Infrared Ovens. Single Phase up to 10 kw Three Phase up to 200 kw l Vacuum Brazing Furnace. l Continuos Annealing / Bell Furnace. Salient Features l From medium to higher capacity or single / three phase load l Sturdy and Rugged Design. l Facility of Local and Remote Operation. l Good accuracy over full range. l Better external noise immunity. Standard Protections Built-In l Adjustable over current limit. l dv / dt protection by RC snubber.