- Flow Controllers & Meters
- IS-Max: Intrinsically Safe Mass Flow Controllers for Explosive Environments
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IS-Max: Intrinsically Safe Mass Flow Controllers for Explosive Environments
Intrinsically safe mass flow controllers
Unprecedented insights into and control of your process
Gain a level of control—and richness of variables reporting—that’s unmatched in hazardous applications. The IS-Max series of intrinsically safe gas controllers come with ATEX/IECEx and North American certifications to operate in Class I, Div 1 or Class 1, Zone 0 areas.
- Accuracy of flow from ±(0.4% of reading and 0.2% of full scale) to ±(0.8% of reading and 0.2% of full scale)
- 98-129 field-selectable gas calibrations
- The first intrinsically safe instrument for flow control—or controlling pressure, while metering flow
- Easy-to-read display verifies your process instantaneously
- Digital MODBUS or ASCII, or analog communications
Quick Specs
| Full-scale flow ranges | 0.5 sccm and 5 sccm | 10 SLPM and 20 SLPM | 50 SLPM and 250 SLPM |
| Standard accuracy NIST-traceable calibration: | ±0.8% of reading and ±0.2% full scale | ±0.6% of reading or ±0.1% full scale, whichever is greater | ±0.8% of reading and ±0.2% full scale |
| High accuracy NIST-traceable calibration: | ±0.4% of reading and ±0.2% full scale | ±0.5% of reading or ±0.1% full scale whichever is greater | ±0.4% of reading and ±0.2% full scale |
| Fluids | 98 field selectable gases standard (129 optional) | ||
| Measurement & control ranges | 0.01% – 100% of full scale (10,000:1 turndown) | ||
| Operating temperature range | -20 °C to +70 °C | ||
| Operating pressure | 11.5 – 160 PSIA ISMCQ-Series: 11.5 – 320 PSIA |
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| Humidity | 0 – 95% non-condensing | ||
| Ingress Protection | IP66 | ||
| Communication protocols | Alicat ASCII and Modbus-RTU over RS–232 or RS–485 | ||
| Analog Communication | 4-20 mA | ||
Build Options
| Process connections | NeSSI SP76 compatible; M5, 10-32”; 1/8”, 1/4“ NPT; BSPP, SAE, and VCR |
| Media-isolated (caustic gas resistant materials) | Wetted Materials: 302, 303, 304, 316L, 430FR stainless steel; FKM, alumina ceramic, glass, gold, heat-cured epoxy, heat-cured silicone rubber, polyamide, silicon |
| Displays | Backlit monochrome or none |
| Calibration: | High-accuracy (see Quick Specs); custom calibration points |
Downloads
Certifications
Included with each device
Multivariate process measurements: Measure Volumetric flow, Mass flow, Absolute pressure, Gauge pressure, Barometric pressure, Temperature, Relative humidity, or Dew point*
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- Gas Select™: 98 user-selectable gases stored internally. Each gas optimized to match NIST’s REFPROP 10 gas property calculations across the operating temperature and pressure ranges for highest accuracy. For ISMCS devices, there are 128 user-selectable gases stored internally.
- COMPOSER™: 20 user-definable gas mixes. Each mix may have up to 5 gases with 0,.01% composition resolution.
- Valve close override and valve open override: Utilize alarms to quickly vent your system or stop all flow as needed.
- Monochrome backlit LCD with integrated touchpad: Easily read measurements using the backlit display and control configurations with the user-friendly integrated touchpad.
- Autotune: Automatically improve the control performance of the valve and tune the control parameters of the deice for your application.
- User-adjustable setpoint ramping & limits: Configurable ramp rates allow the process variable to be controlled as fast or as slow as desired, and configurable setpoint limits protect processes from inadvertent setpoint changes.
- User-adjustable standard temperature and pressure (STP) conditions: Quickly change reference conditions without the need for recalibration.
- Configurable flow and pressure averaging: Adjust averaging from 1-255 ms to take control over how instantaneous or smooth measurements will be.
Accessories | Sold separately
- Process port fittings and filters
- Required barriers for power supply and communication
Not exactly what you’re looking for?
- Need an intrinsically safe flow meter, not a controller?
- Check out our other flow or pressure control and measurement solutions.
- Our expert team of applications engineers is available to provide additional information, discuss your application, or answer any questions you may have.
