High Accuracy Insertion Thermal Gas Mass Flow Meter (JH-RSFM-IN)

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