Thermal Mass Flow Meter
The thermal gas mass flow meter is an instrument to measure the gas flow by the principle of thermal diffusion. The sensor consists of two reference thermal resistors (RTD). One is RH, a speed sensor, and the other is RMG, a temperature sensor that measures changes in gas temperature. ATO manufacturer provides 2 types of thermal mass flow meter: insertion thermal mass flow meter and flange type.
Features:
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Easy installation, simple maintenance, two-way detection and anti-vibration. Same as insertion electromagnetic flow meter.
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Flow and temperature detection, switch display. Large nozzle and small diameter, can do leakage detection.
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Using proprietary technology "dual balance structure" package sensor.
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Proprietary high humidity, high temperature algorithm, medium temperature up to 500 ℃.
Specification:
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Model
|
ATO-QH-201903665
|
|
Structural Style
|
plug in type
|
flange type
|
|
Accuracy
|
±2-2.5%
|
±1.5%
|
|
Working Pressure
|
2.5 Mpa
|
4.0 Mpa
|
|
Medium of Measurement
|
gases other than acetylene
|
|
Velocity Range
|
0.1-120 Nm/s
|
|
Working Temperature
|
sensor 40 ℃~220 ℃, converter 20 ℃~45 ℃
|
|
Power Supply
|
DC 24V, AC 220V≤18W
|
|
Response Speed
|
1s
|
|
Output Signal
|
4-20 mA, RS-485, HART protocol
|
|
Alarm
|
1-2 relay normally open contact, 10A/220V/AC, 5A/30V/DC
|
|
Display
|
4 row LCD display
|
|
Protection Level
|
IP65
|
|
Sensor Material
|
stainless steel
|
Dimension (Unit: mm):
|
Nominal Dia.
|
Flange Outer Dia.
|
Center Hole
|
Bolt Hole
|
Flange Thickness
|
Installation Length
|
|
DN
|
D
|
k
|
n*L
|
C
|
L
|
|
15
|
95
|
65
|
4x14
|
14
|
280
|
|
20
|
102
|
75
|
4x14
|
16
|
280
|
|
25
|
115
|
85
|
4x14
|
16
|
280
|
|
32
|
140
|
100
|
4x18
|
18
|
350
|
|
40
|
150
|
110
|
4x18
|
18
|
350
|
|
50
|
165
|
125
|
4x18
|
20
|
350
|
|
65
|
185
|
145
|
4x18
|
20
|
400
|
|
80
|
200
|
160
|
8x18
|
20
|
400
|
|
100
|
220
|
180
|
8x18
|
22
|
500
|
Related Products
sales@atoflowmeter.com
+86 773-363-7977
BLDG A, MiXc Xiufeng, Guilin China