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Large Caliber Smart Prepaid Ultrasonic Heat Meter ISM-037

General Introduction

ISM-037 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. It has two parts, which is ISM-037 heat meter and its controller. The controller and heat meter are separated structure and communicates by wireless way. The heat meter is consisted of flow sensor, microprocessor and matched pair temperature sensor. The meter is designed and developed on the basis of the European Standard EN1434 and OIML-R75 International Standard, and has high performance and low energy consumption, and in line with the product standard CJ128-2007 Heat Meter issued by Ministry of Construction of China.

 
Characteristics
1. Alarms when voltage is low.
2. Automatic data correction technology.
3. High definition and wide temperature LCD display.
4. Flow rate has 8 levels and are separately adjusted, with high precision.
5. Ultra-low energy consumption (static power consumption is less than 7μA).
6. The tube adopts forging technology and with Straight-through body.
7. Measuring mechanism has no moving parts and no wear and tear forever. The measuring accuracy will not be influenced by using period.
8. Optical interface, long distance communication, can read meter by PDA.
9. Horizontal or vertical installation
10. Automatically upload date to controller at regular time by wireless way.
11. Open and close valve at regular time, which effectively prevent valve rust.
 
Technique Specifications 

 

 
 
 
 
Flow Sensor
Caliber
Common Flow Rate Qp (Q3)
Min Flow Rate
Qmin (Q1)
Overload flow
QsQ4
40mm
10
0.2
20
50mm
15
0.6
30
65mm
25
1
50
80mm
40
1.6
80
100mm
60
2.4
120
125mm
100
4
200
150mm
150
6
300
200mm
250
10
500
Minimum display of flow rate: 0.01m3 (when used) 0.00001m3 (when checking)
Minimum display of heat power:1kWh (when used) 0.001kWh (when checking)
 
Temperature Sensor
Min Temperature Difference
1 or 3℃
Max Temperature Difference
90
Min Display Temperature
0.1
Static Working Current
< 7μA
Battery Service Life
> 5 years
Digit Number of LCD Screen
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 )
Accuracy
Class 2
Pressure Resistance
PN16       
Loss of Pressure
≤0.025MPa
Working Status Indicator
Twinkling of     on the top left corner of the LCD
 

 

Model
ISM-037---prepaid ultrasonic heat meter, LCD display, DN40/50/65/80/100/125/150/200
 
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