Model NO.: JH-RSFM-F
Measuring Media: Gas
Measuring Principle: Thermodynamic
Measurement Object: Closed Pipeline
Certification: CE, RoHS, ISO
Measuring Range: 1.2-200000m3/H
Power Supply: 220VAC
Signal Output: RS485,RS232,4-20mA
Display: LCD
Material: Ss316
Working Temperature: -20-350c
Anti-Explosion: Exdllct4
Protective Class: IP67
Trademark: JH
Transport Package: Carton
Specification: CE, ROHS
Origin: Shanghai
HS Code: 902610000
                                                            Thermal Gas Mass Flow Meter  

Thermal Type Gas Mass Flowmeter utilizes the principle of heat exchange to measure fluid-flow. This meter employs method of constant temperature difference to accurately measure gas mass flow, and it has the advantages of small size, high degree of digitization, easy installation, accurate measurement, etc.
The sensor part consists of two platinum resistance converters of reference level. It utilizes bridge type loop circuit, with one converter measuring fluid temperature, and another maintaining constant temperature difference that is higher than fluid temperature. The measurement can be made under high temperature and high pressure situation.  


Features:
-Calibrate output analog quantity 
- Directly measure gas mass flow, and gas temperature also can be output of the measuring system.
-Be adopted modular design method and operating principle to make the instrument higher measurement efficiency.
-Quick installation and manipulation menu allows the user easy to set parameters, and the instrument can flexibly display.
-It can cumulatively calculate flow and store the information in the EEPROM memory, and information will not be lost when power outage.
-Pressure drop or pressure loss can be negligible.
-Ratio of wide range can be 100:1.             
-It can be installed on the circular or rectangular pipe.
-Each instrument is individually calibrated, and it can be determined calibration scheme according to the requirement of user.
-Easy installation and maintenance. If possible, on line installations and maintenance are allowed.
-Ball valve accessories can be chose to remove or replace instrument easily in low pressure and non-toxic gas environment.
-Good anti-seismic performance and long useful life. The converter doesn't contain movable part and pressure sense part, so that the measuring accuracy is not influenced by shaking.


Applications:
Environmental protection , Petroleum , Petrochemical , power ,metallurgy , Chemical , food ,scientific research and other industries .



Technical parameters:
inline type

DN
Kg/h
Nm3/h
(0°C1.013bar atm)
Scf/min.
(15°C1.013bar atm)

Min.
Max.
Min.
Max.
Min.
Max.

15   		 0.5 53 0.38 41 0.23 25
25 2 200 1.5 155 1.0 96
40 6 555 4.6 429 3.0 266
50 10 910 7.7 704 5.0 436
80 20 2030 15.5 1570 10 974
100 38 3750 29 2900 18 1800

 
insertion type

 
DN
Kg/h
Nm3/h
(0°C1.013bar atm)
Scf/min.
(15°C1.013bar atm)

Min.
Max.
Min.
Max.
Min.
Max.

80
20
2030
15.5
1570
9.6
974

100
38
3750
29
2900
18
1800

150
50
7500
38
5800
24
3600

200
80
12500
62
9666
38
6000

250
120
20000
93
15468
58
9600

300
180
28000
139
21655
86
13440

400
300
50000
232
38670
144
24000

500
500
80000
386
61870
240
38400

600
700
115000
540
88940
336
55200

700
900
159000
696
122970
432
76300

1000
2000
320000
1546
247846
960
153600

1500
2500
720000
1933
556844
1200
345600
 

Flow range
0.2-120 Nm/s (air under the standard conditions)

Accuracy
Flow values:± 1% F · S, and plus 0.2% of reading
Temperature values: ±0.1°C

Repeatability
Flow values:± 0.5%
Temperature values: ±0.03°C

Range ratio
100:1 to 1000:1, the factory setting.

Temperature compensation
standard temperature compensation

Working temperature
-40 - +932 ° F (-40 - +500 °C)

Humidity
99%, non-condensing

Response time
0.75s

Temperature Effect
± 0.05% / °C

Operating pressure
10Mpa at 20 °C   9.5Mpa at 200 °C

Medium
All gases that can be compatible with material of flow components.

Environmental temperature
-40 - +160 ° F (-40 - +70 °C)

Storage temperature
-40 ° - +160 ° F (-40 - +70 °C)

Housing material
NAME4X (IP65) aluminum casting of powder coating

Process of connection
NPT or flange

Electrical interface
M20×1.5

Power supply
200-240VAC, 22-30VDC

Signal output
Current: 4-20mA, 700Ω maximum load
Voltage:0-10VDC, 200ohm, 1-5VDC, 100 maximum load

Communications
485, HART, Profibus, CAN optional

 







 
                                

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