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Mass Flow Meters that are Intrinsically Safe

IS-Max™ Intrinsically Safe Mass Flow Meters for Explosive Environments

Mass flow controller products from Alicat

Intrinsically safe flow measurements, for deep insights into your process. Gain a richness of variables reporting in hazardous applications: not just mass and volumetric flow, but temperature and pressure readings. IS‑Max series of gas meters have ATEX/IECEx certificates for use in explosive gas atmosphere hazardous locations.

Flow accuracy as good as ± 0.4% of reading or ± 0.2% of full scale, whichever is greater
Up to 128 pre-loaded gas calibrations — switch without losing accuracy
Easy-to-read display makes it easy to verify operating conditions in the field and on installation
Digital MODBUS or Alicat ASCII, or analog communications
Measure volumetric flow, mass flow, absolute pressure, gauge pressure, barometric pressure, temperature, relative humidity, dew point, and more

Operating manuals, brochures, software, and utilities →

Full Scale Flow Ranges

0.5 SCCM – 5,000 SLPM

OPERATING PRESSURE RANGE

11.5 – 160 PSIA
Optional 11.5 – 320 PSIA with ISMQ

Intrinsically safe mass flow meters from Alicat

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INTRINSICALLY SAFE

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

Spec Sheets

0.5 SCCM – 5,000 SLPM

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ISMS Series Flow Meter

Corrosive-resistant gas meters for explosive environments

STAINLESS STEEL

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

Spec Sheets

0.5 SCCM – 5,000 SLPM

Low Pressure Drop

ISMW Whisper™ Series Flow Meter

Ultra-low pressure drop mass flow meters

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)
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

Spec Sheets

0.5 SCCM – 1,000 SLPM

High pressure

ISMQ Series Flow Meter

Measure flow rates at higher pressures

HIGHER PRESSURE

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

Spec Sheets

10 SCCM – 5,000 SLPM

Build Options for Intrinsically Safe Mass Flow Meters

Calibration

Standard or high accuracy; custom calibration points

Communication Protocols

RS-232 Serial (default)
RS-485 Serial
Analog (4-20 mA [default])
Modbus RTU and Alicat ASCII (over RS-232 or RS-485)

Displays

Backlit monochrome (default) or none

Process Connections

NeSSI SP76 compatible; M5, 10-32”; 1/8”, 1/4” NPT; BSPP, SAE, and VCR

Ingress Protection

IP66

Hazardous Environment Ratings

See certificates below

Humid Gases

Relative humidity compensation, dew point reading

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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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