In many of the Pharma and beverages industries, DM or, WFI water is used where pH has to be monitored and output also would be required for remote Indication or, Control. In Effluent and Sewage treatment also pH has to be maintained after its processing. We provide online pH Electrode with panel mounted Digital pH Indicator with 4 to 20 mA output. Details of Electrode : Type of Electrode : Glass Tube type Electrode Process Connections : 3/8” BSP (M) Electrode Holder : PP, PTFE or, SS Electrode Holder Mounting : ¾” BSP (M) Range : 0 to 14 pH Resolution : 0.1 Max. Temperature : Electrode with PP Socket up to 60 degree C Electrode with PTFE Socket up to 100 degree C Electrode with SS Socket up to 120 degree C Max. Pressure : 6 bar Electrical connection : One meter cable with BNC connector Approx. Length of the assembly : 120 mm Details of Digital Indicating Transmitter : Mounting : Panel mounted Power Supply : 230 V AC Display : 4 digit, 7 segment LED display Dimensions : 96 X 96 X 110 mm Output : Temperature compensated 4 to 20 mA and 1 no. 5 A, 230 V AC

1. Page 1 of 2
SALIENT FEATURES
DESCRIPTION
TECHNICAL SPECIFICATIONS
ELECTRONET
PH/ORP TRANSMITTER
PH-100S
CAT/PH-100S-R1
· On-line measurement. 2 wire system.
· 4-20 mA DC output. Auto/Manual temperature compensation.
· On-Line indication through LCD display.
· Simple operating interface with basic pictographs.
· Easy installation with pre assembled empty enclosure & plug in
terminals.
· Protection Class IP-65
· Software calibration with buffer solution.
Electronet series PH-100S are PH / ORP transmitters used for various industrial applications. It can accept
input from pH / ORP electrode & pH / ORP signal is transmitted in the form of electrical 4 - 20 mA signal. The
on-line pH / ORP indication is provided through LCD. Span/Zero adjustments are easily accessibly. These
transmitters are suitable for any make of electrode.
Type of Input : From pH/ORP Electrode (Compatible to any make Electrode)
Type of Output : 4-20 mA DC, 2 wire Isolated
Display : 8 x 1 LCD/COG Graphics LCD
Calibration Range : 0 to 14 pH /1000 mV
Calibration Method : 2 Point buffer (For pH Only)
Temperature Compensation : Auto / Manual through RTD, Pt 100 sensor for 0-125 °C
Accuracy : ± 0.05 pH / ± 3mV
Isolation : 1.4 KV between Input, Output & Power Supply
Process Connection : 1) Through BNC connector
2) Through Terminals
Power Supply : 24 V DC, External
Power Consumption : < 50 mW
Repeatability : ± 0.05% of span, at 25 °C
Sensitivity : ± 0.02 pH
Stability : 0.02 pH per 24 Hours, non- cumulative
Response Time : < 1000 ms
Temperature Coefficient : ± 0.05% per C
Temperature Drift : ± 0.02% of span per °C (zero & span) at 25 °C
Dimensions : 135 (H) x 182 (W) including cable gland x 200 (D) in mm approx.
Electrical Connections : 3/4” ET
Mounting : 2” Pipe Mounting
Weight : 0.5 kg
Operating Conditions : Temperature 0 to 55 °C / Humidity 5 to 95% non condensing
Housing : Cast aluminium with epoxy coating NEMA 4X (IP-65)
Digital Communication : HART
ACCESSORIES (Optional)
Temperature Compensation Sensor : RTD, Pt 100 (0 - 125 °C)
Flow Through Assembly : SS / PP
Electrode Cleaning System : SS / PP

2. NK Instruments Pvt. Ltd.B-501/504, 5th floor, Raunak Arcade, Near THC Hospital, Gokhale Road, Naupada,
Thane(W) 400602. Maharashtra INDIA Telefax Nos.: 91-22-25301330 / 31 / 32
E-Mail: sales@nkinstruments.com Web: http://www.nkinstruments.com
Skype: nitinkelkarskype Gtalk: nkinstruments2006
Authorised Dealer
ORDERING INFORMATION
*Accuracy defined at lab conditions.
*Due to our continuous product revisions, Design, Specifications and Model Number are subject to change without notice.
Page 2 of 2CAT/PH-100S-R1
SERIES
Temperature
CompensationEnclosure
01 RTD
08 Other
BA 01 02pH-100
Output
01 4-20mA
02 4-20mA
with HART
C 02
DIMENSIONAL & MOUNTING DETAILS
130mm
147 mm
HTIGT WP HE EE
N
K
C
–
I
E
R
R
C
E
U
H
IT
P
A
S
L
O
IV
M
E
T
-
A
-IE NVI ES XOLP
007.00
pH
104mm
155mm
pH-100S
2” PIPE
`U` CLAMP FOR
PIPE MOUNTING
HTIGT WP HE EE
N
K
C
–
I
E
R
R
C
E
U
H
IT
P
A
S
L
O
IV
M
E
T
-
A
-IE NVI ES XOLP
007.00
pH
pH-100S
WALL MOUNT PIPE MOUNT
Input Device
pH Input
LOOP DIAGRAM
4-20mA
Output
Sensor
HART Communicator
Sensor
Signal
AnalogOutput
Output Device
Transmitter Electronics
Module
Microprocessor
Digital PV
POWER SUPPLY Vs LOAD GRAPH
16 18 24 30 36 42
0
250
500
750
1000
1250
1500
With HART Communication
Without HART Communication
500 ohms
1200 ohms
Power Supply Load limitation
Load,ohms
01 Aluminum
Dia cast
02 SS316