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Ultrasonic Heat Energy Meter ISM-032

General Introduction

Heat meter is a kind of instrument used to measure and display the released heat power when the heat-carrying liquid pass through the heat exchange system. ISM-032 heat meter is consisted of flow sensor, microprocessor and matched pair temperature sensor. The meter is designed and developed on the reference of the European Standard EN1434 and OIML-R75 International Standard, and with high performance and low energy consumption, and in line with the product standard CJ128-2007 Heat Meter issued by Ministry of Construction of China. M-BUS and wireless remote communication protocol meet with standard CJ/T128-2007.

1. Alarms when voltage is low.
2. Automatic data correction technology.
3. Alarms when the temperature sensor is disconnected or has a short cut.
4. High definition and wide temperature LCD display.
5. Flow rate has 8 levels and are separately adjusted, with high precision.
6. Intelligent blockage resistant and valve rust remove technology
7. Ultra-low energy consumption (static power consumption is less than 7μA).
8. The tube adopts forging technology and with straight-through body.
9. Measuring mechanism has no moving parts and no wear and tear forever. The measuring accuracy will not be influenced by using period.
10. Optical interface, long distance communication, can read meter by PDA.
11. M-BUS communication.
12. Horizontal or vertical installment.
Technique Specifications


Flow Sensor
Common Flow Rate
Min Flow Rate
Max Flow Rate
6000 L/h
120 L/h
12000 L/h
Minimum display of flow rate: 0.01m3 (working status) 0.00001m3 (testing status)
Minimum display of heat power:1kWh(working status) 0.001kWh(testing status)
Temperature Sensor
Min Temperature Difference
1℃ or 3℃
Max Temperature Difference
Min Display Temperature
Static Working Current
< 7μA
Battery Service Life
> 5 years
Digit Number of LCD
8 numbers
Max Accumulated Working Time
4.2x109 hours (only final 8 numbers can be displayed
when accumulated working time is more than 99999999 hours)
Max Accumulated Flow Rate
4.2x109 m3 (only final 8 numbers can be displayed when accumulated
flow rate is more than 999999.99 m3 )
Class 2
Pressure Resistance
Loss of Pressure
Working Status Indicator
Twinkling of     on the top left corner of the LCD


 ISM-032---common ultrasonic heat meter, LCD display, DN20/25/32
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