When it comes to measuring thermal energy consumption, industry professionals are saddled with questions like What is a BTU meter or How do I calculate BTU or What is BTU consumption? BTU meter measures the thermal energy content of liquid flow in British Thermal Units (BTU) or in Kilo Calories (Kcal)., even sometimes in Kw. But this Kw has nothing to do with electrical KW. Manas is a leading Indian manufacturer of BTU meters who can provide a solution for calculating the BTU or measuring the BTU consumption with their BTU meters with communication support like, BACnet, MODBUS with LAN Port. A BTU meter (also called a Heat Meter) comprises a combination of a flow meter with temperature sensors that measure energy consumption in any liquid heating or cooling system. These are also called Energy Meters and are used to bill the end-user for his/her air conditioning energy usage. A BTU meter can also be used to measure the performance of energy-saving equipment, loss of efficiency within a heating or cooling system which means revenue loss. They are also required in heat recovery systems to find out the quantum of recovered heat. Features Choice of flowmeters: You can go for Electromagnetic or Ultrasonic Flow Meter Both Instantaneous and Totalised flow values are available Users can define the units for heat measurement High-grade Temperature Sensors are used for accurate differential temperature measurement Flow units can be selected by the user Memory storage is built in to protect the data during power failures BACnet IP/MODBUS, TCP/IP/RS485 for remote connectivity. All flow meters are highly accurate as they are factory calibrated. Applications BTU meters are used in chilled water systems for commercial, industrial, and office buildings. These meters are used to bill users for air conditioning energy usage. Cooling effectiveness measurement in water-based systems Useful for identifying leakages in hot or cold-water systems Useful for Dredging industries Residential apartments for tenant billing Energy measurement in open heating/cooling systems Useful in heat recovery systems. Applications in the Mining industry Special applications in Water and wastewater management

1. Description
BTU 100 L is a versatile compact energy
totalizer extremely useful for energy conversion.
It measures the thermal energy required for air conditioning.
It accepts a ow meter for chilled water, inlet temperature sensor
and the outlet temperature sensor. From this it calculates the
thermal power and energy consumed in maintaining the
temperature at given level. 9 digits are available for total energy
and four digits are available for instantaneous power reading. The
engg. Unit can be selected by user, either as KW and KWH or
MBTU / Hr and BTU.
BTU Meter
Series BTU 100
We are certified with
ISO/IEC 17025:2017 | ISO 9001:2015
ISO 14001:2015 | OHSAS 45001:2018
Technical Specications
Key Board : Four Number of Keys for Parameter
Programming
(Note : Accessible on opening the cover
of the BTU-100L)
Four magnetically operated keys for
parameter programming
(Note : Accessible without opening the
cover of the BTU-100L)
0
Operating : 0 to 50 C
Temperature
0
Temperature Drift : 0.015 % / C maximum of Full Scale
Relative Humidity : 90% R.H.max. Non condensing
Data Storage : 4900 readings (Hourly Logging) as standard
feature 9800 readings as an optional feature
Log View : Possible by scrolling of keys
Fault Condition : Indicated by various error codes
Comm. Port : Protocol - MODBUS RTU./ MODBUS IP /
BACNET IP
Comport - RS232 or RS485(default).
(Only for MODBUS RTU) LAN Port for
MODBUS IP / BACNET IP (100Mbps,
Half Duplex)
Power Supply : 85 Vac to 265 Vac, 50 Hz, Universal
Construction : Aluminum Die cast housing with IP65
Protection (Wall Mounting)
Dimensions : 220 mm (L) x 120 mm (H) x 90 mm (D)
Ingress Protection : IP65
Advantages
Ÿ Compact Wall mounting design with IP 65 Enclosure
Ÿ 16x2 LCD for total energy as well as instantaneous power
Ÿ Display of chilled water ow, power temperature available
Ÿ Choice of mounting either on inlet or on outlet as per site
conditions
Ÿ Choice of Engg. Units : MBTU / KWhr/TR
Ÿ Data storage up to 1 year with hourly storage facility with real time
Ÿ Storage can be viewed by scrolling keys
Ÿ Serial Interface with computer through MODBUS RTU /
MODBUS IP / BACNET IP
Input : a) 4 - 20 mA from ow meter
b) RTD, PT - 100 from Inlet Sensor
c) RTD, PT - 100 from Outlet Sensor
Output : Isolated 4 - 20 mA proportional to
power output
Display : 16x2 LCD, 9 digits for total energy and
5 digits for instantaneous power
Totalizer Backup : Backup of Total Flow maintained
on Power Failure
Power Unit : MBTU/hr / KW Programmable
Energy Unit : MBTU / KWhr/TR
Zero Cut-off : 0.2%, 0.5%, 1.0%, 1.5%, 2.0% Programmable
Accuracy : ± 0.25% of Full Scale

2. EL 54, Electronic Zone,
J-block, MIDC Bhosari,
Pune 411026.
Maharashtra, India.
Tel: 8484039026
Mob: +91 77220 34924 / 74200 99054
mktg@manasmicro.com
www.manasmicro.com
We are certified with:
ISO/IEC 17025:2017 ISO 9001:2015 ISO 14001:2015 OHSAS 45001:2018
| | |
microsystems
p r i v a t e l i m i t e d
Note
Standard anges used for Electromagnetic ow meters :
a. ANSI B 16.5, class150 upto DN350
b. From DN400 to DN 800 : IS 1538
c. From DN900 & DN1000 : AWWA class B
Dimensions: 220 mm (L) X 120 mm (B) X 90 mm (D)
Horizontal Mounting Distance: 240 mm
Vertical Mounting Distance: 90 mm
Recommended Mounting Bolt: M6
ORDERING
INFORMATION
Sample code explained: DN50 - HR - SS316L - ANSI150 - CS - CS - RMT - BTU100L - WM - RS4 - 1L - U
Ec-HET-01_1
|
BTU-1
ANSI150 Flang / End Connection
Standards
ANSI150 : ANSI150
IS1538 : IS1538
AWWA Class B : AWWA
Any Other : ZZ
AIR HANDLING UNIT
(AHU)
85 to 265V AC
MAINS 50/60 Hz
Universal
INLET TEMP SENSOR
PT100
WATER RETURN
R
KEYPAD-HE
TO PC OR
PRINTER
(OPTIONAL)
FLOW SIGNAL
OUTPUT
4 - 20 mA
CHILLED
WATER SUPPLY OUTLET TEMP SENSOR
PT100
ELECTROMAGNATIC
FLOW METER
DN 50 Flow Meter Size
DN10 : 3/8" DN200 : 8"
DN15 : ½” DN250 : 10"
DN20 : ¾” DN300 : 12"
DN25 : 1" DN350 : 14"
DN32 : 1 ¼” DN400 : 16"
DN40 : 1 ½” DN450 : 18"
DN50 : 2" DN500 : 20"
DN65 : 2 ½” DN600 : 24"
DN80 : 3" DN700 : 28"
DN100 : 4" DN800 : 32"
DN125 : 5" DN900 : 36"
DN150 : 6" DN1000 : 40"
SS316L Electrode Material
SS316L : SS316L
Any Other : ZZ
CS Flange / End Connection
Material
Carbon Steel : CS
Stainless Steel : SS304
SS304
Any Other : ZZ
CS
Carbon Steel : CS
Stainless Steel : SS304
SS304
Any Other : ZZ
Body Material
HR Liner Material
PTFE : PTFE
Hard Rubber : HR
Neoprene : NE
Any Other : ZZ
BTU100L BTU Calculator
BTU100L : BTU100L
WM Mounting
Wall : WM
RS4 Communication Facility
RS232 : RS2
RS485 : RS4
Modbus IP : Modbus IP
Bacnet IP : Bacnet IP
Any Other : ZZ
1L Data Logging
Normal Logging : 1L
Extended Logging : 2L
U Power Supply
85-265Vac,50Hz : U
24Vdc : 3
Any Other : ZZ
RMT Transmitter Mounting
Integral : INT
Remote : RMT
Due to continuous development specications are subject to change without prior notice.