Products » Gas Flow » Mass Flow Meter » IS-Max Intrinsically Safe Mass Flow Meters
IS-Max™ Flow Meter for Class I Division 1
Mass flow measurement where explosive gases are continuously present
- Accuracy: ± 0.4% of reading or ± 0.2% of full scale
- Up to 128 pre-loaded gas calibrations for instant switching without accuracy loss
- Clear display for quick verification during installation and field checks
- Communication: Digital MODBUS or Alicat® ASCII, plus analog options
- Parameters: Mass flow, volumetric flow, absolute/gauge pressure, barometric pressure, temperature, relative humidity, dew point, and more
Full Scale Flow Ranges
0.5 SCCM – 5,000 SLPM
OPERATING PRESSURE RANGE
11.5 – 160 PSIA
Optional 11.5 – 320 PSIA with ISMQ
ISM Series Flow Meter
Gas mass and volume flow meters for explosive environments
- Intrinsically safe mass flow meter
- 98 gases
- 0.5 SCCM – 5,000 SLPM
- 11.5 – 160 PSIA (high pressure option to 320 PSIA)
- Accuracy of flow as good as ± 0.5% of reading or 0.1% of full scale, whichever is greater
- See certificates below
ISMS Series Flow Meter
Corrosive-resistant gas meters for explosive environments
- Corrosion resistant intrinsically safe mass flow meter
- As many as 128 gases, including corrosives
- 0.5 SCCM – 5,000 SLPM
- 11.5 – 160 PSIA
- Accuracy as good as ± 0.4% of reading and 0.2% of full scale
- See certificates below
Low Pressure Drop
ISMW Whisper™ Series Flow Meter
Ultra-low pressure drop mass flow meters for continuously explosive gas atmosphere hazardous locations
MINIMAL PRESSURE DROP
- Low pressure drop intrinsically safe mass flow meter
- 98 gases
- 0.5 SCCM – 1,000 SLPM
- 11.5 – 160 PSIA (high pressure option to 320 PSIA)
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Accuracy as good as ± 0.6% of reading or ± 0.1% of full scale, whichever is greater
- 0.07 PSID minimum pressure drop
- See certificates below
High pressure
ISMQ Series Flow Meter
Measure flow rates at higher pressures for continuously explosive gas atmosphere hazardous locations
- Intrinsically safe mass flow meter for higher pressures
- 98 gases
- 10 SCCM – 5,000 SLPM
- 11.5 – 320 PSIA operating pressure
- Accuracy as good as ± 0.6% of reading or ± 0.1% of full scale, whichever is greater
- See certificates below
Build Options for Intrinsically Safe Mass Flow Meters
RS-485 Serial
Analog (4-20 mA [default])
Modbus RTU and Alicat ASCII (over RS-232 or RS-485)
Ready for the final details?
Each product is made-to-order. Alicat’s Applications Engineers are ready to provide expertise and discuss custom options, ensuring the best fit for your needs.
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Ask an engineer
Your flow rate, pressure, and choice of gas can all affect which Alicat instruments work for your application.
Our Applications Engineers can answer your questions and help you find the best option.
Service and Support
Whether it is time for your instrument’s annual recalibration or your instrument needs a repair or upgrade, you can fill out the Service Request Form below, email us, call us, or start a live chat session to get the service process started.