Suchuan Supply Thermal Mass Flow Meter

Suchuan Supply Thermal Mass Flow MeterTechnical Specifications

Applicable medium: all gases compatible with stainless steel

Measurement range: 0.05-120m/s

Working temperature: -40 ℃ -510 ℃

Environmental temperature: -40 ℃ -85 ℃ Humidity less than 90% RH

Pressure drop:

For pipelines with a diameter greater than or equal to 3 inches, power requirements can be ignored:

18-30VDC 600mA large

180-230VAC large 2.5W

100VAC large 3.15W

Output signal: 4-20mA linear proportional to mass flow rate and 4-20mA linear proportional to temperature

Accuracy: 1% reading ± 0.5% full-scale

Repeatability: ± 0.2% F.S

Pressure resistance: 4.2MPa

Response time: ≤ 850ms

Shell material: die cast aluminum, A2/A4 optional

Probe material: 316L, tantalum, titanium and other optional materials

Ball valve: 316L

Compression joint: 316L/304

Flange: 316L/304

Alarm output: Relay normally open contact capacity of 220AC/3A or 24VDC (only for flow value alarm output), can output temperature

Display: Wide screen LCD display, parameters and variables can be set through the buttons on the panel (with password protection)

Protection level: IP65 (different levels)

Suchuan Supply Thermal Mass Flow MeterAdvantages of

1. The thermal mass flowmeter can measure small flow rates at low flow rates (gas 0.02~2m/s); Immersion thermal mass flow meters can measure low to medium to high flow rates (gas 2-60m/s), while plug-in thermal mass flow meters are more suitable for large pipe diameters.

2. Thermal mass flow meters have no moving parts, and thermal distributed instruments without diversion pipes have no flow blocking components, resulting in minimal pressure loss; Thermal distributed instruments and immersion instruments with diversion pipes, although equipped with flow blocking components in the measuring pipeline, have minimal pressure loss.

3. The performance of thermal mass flow meters is relatively reliable. Compared with deductive mass flow meters, it does not require temperature sensors, pressure sensors, and computing units, only flow sensors, simple composition, and low probability of failure.

4. Thermal distributed instruments are used for diatomic gases such as H2, N2, O2, CO, NO that are close to ideal gases. If these gases are not specifically calibrated, instruments can be calibrated directly with air. Experimental results have shown that the difference is only about 2%; For single atom gases such as Ar and He, multiply by a coefficient of 1.4; It can be converted to specific heat capacity for other gases, but the deviation may be slightly larger.

5. The specific heat capacity of a gas varies with pressure and temperature, but small changes near the temperature and pressure used can be considered constant.