Insertion Explosion-proof Thermal Mass Flow Meter (MT211x-Ex)

Product codeMT211x-Ex
This thermal mass flow meter is the explosion-proof version of MT211x, with Ex db IIC T6 Gb / Ex tb IIIC T80°C Db class. With an ultra-wide 1:2500 turndown ratio, the measuring range is from 0.1 Nm/s to 250 Nm/s, suitable for pipes with diameters from DN20 to DN1000.
Accuracy

Standard: ±(1.5% RD + 0.3% FS) , Optional: ±1% RD

Measuring Range

0.1 to 63617 Nm³/h

Medium Temperature Range

-40 to 176°F (-40 to 80°C)

Max. Process Pressure

63 bar (913.74 psi)

Wetted Materials

304 stainless steel (standard), 316stainless steel (optional)

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Description

Features:

  1. Explosion-proof class: Ex db IIC T6 Gb / Ex tb IIIC T80°CDb.
  2. Medium: Compressed air, nitrogen, oxygen, Carbon dioxide & other non-condensing gases.
  3. Suitable for pipes with diameters from DN20 to DN1000.
  4.  Ultra-wide 1:2500 turndown ratio, the measuring range is from 0.1 Nm/s to 250 Nm/s.
  5. Full-digital signal processing, higher accuracy, long-term stability.
  6. Based on the thermal flow measurement principle, it’s not required to compensate gas pressure and temperature, integrated temperature measurement.
  7. The fully isolated electrical structure can completely filter out field disturbance.
  8. English, Spanish, French and other languages on request are available for LCD display.
  9. Each flow meter is calibrated and assigned a unique serial number corresponding to all calibration data.

Applications:

Oil and Gas
– Wellhead gas, flare gas
Environmental Monitoring
– Stack emissions, biogas, air quality
Chemical and Petrochemical
– Process gas flow, gas injection, leak detection
Pharmaceutical and Biotech
– Cleanroom airflow, bioreactor gas flow
Food and Beverage
– CO₂ in carbonation, nitrogen in packaging
HVAC
– Duct airflow, ventilation systems

Specifications

Product code

MT211x-Ex

Nominal Diameter Range

DN 20 to 300 (3/4" to 12") Others on request

Wetted Materials

304 stainless steel (standard), 316stainless steel (optional)

Accuracy

Standard: ±(1.5% RD + 0.3% FS) , Optional: ±1% RD

Measuring Range

0.1 to 63617 Nm³/h

Max. Process Pressure

63 bar (913.74 psi)

Medium Temperature Range

-40 to 176°F (-40 to 80°C)

Ambient Temperature Range

-22 to 140°F (-30 to 60°C)

Outputs

4-20 mA, Pulse

Digital Communication

Modbus/RS-485 (Standard), Wireless (optional)

Power Supply

DC 18 to 30 V

Process Connections

Insertion

Degree of Protection

IP67

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