توضیحات
گازسنج برند MSA مدل Chemgard Photoacoustic
(MSA Brand Infrared Gas Monitor Model Chemgard Photoacoustic)
Description
۳ enclosure styles allow for installation in explosion-proof, NEMA 4 or rack-mounted configurations.
Chemgard Monitor NEMA 4 and rack-mount versions provide ease of use and maintenance, with only 4 front-panel pushbuttons for configuration.
Explosion-proof model is easily configured using a 4-button, wireless IR transmitter that communicates through the front panel window.
For most installations, gas monitoring begins after simply mounting the instrument, connecting the sample line and powering the unit.
Instrument typically draws gas sample via internal pump, allowing unit to be mounted in convenient operator locations if areas to be monitored are inaccessible.
MSA Chemgard Series
Top-performance, cost-effective, photoacoustic infrared gas monitors
Ranges
The Chemgard Series of photoacoustic infrared monitors are highly sensitive instruments available in many output ranges:
۰-۱۰ ppm
۰-۱۰۰ ppm
۰-۱۰۰۰ ppm
۰-۱% by volume
۰-۱۰% by volume
۰-۱۰۰% by volume
۰-۱۰۰% LEL
The Chemgard Monitor is factory calibrated, ready to detect a specific gas in the range desired.
Cross-sensitivity to water vapor, a common concern with other types of infrared analyzers, does not occur with this instrument.
Proprietary sensing technique determines a sample’s amount of water vapor, then subtracts that amount from the gas reading, allowing for extremely stable gas readings and no sensitivity compromise.
Technology
The Chemgard Gas Monitor is extremely stable and highly selective to the gas of interest, and can operate for months with virtually no zero drift.
This monitor offers detectability as low as 0.01 ppm for certain applications
Features
Photoacoustic infrared technology
Easy to install, operate and maintain
Operates over a wide temperature range
Can be installed in numerous environments and configurations
Easy-to-read display shows gas concentration(s) and alarms
۳ alarm levels with relay output
UL 2075 approval
Expandability
The Chemgard Monitor can be expanded to monitor up to 8 locations simply by adding the multipoint sequencer option.
The display indicates the monitored location and the corresponding gas concentration at each location.
Data Logging
The Chemgard Monitor can log data, giving users access to datestamped information on key events including gas readings, alarms and fault conditions.
Gas readings can be logged as maximum or average readings over 15-minute or 1-hour time periods.
Data is accessible through front panel display or RS-232 port.
NEMA 4 Version
The NEMA 4 version in a rugged metal enclosure has UL 2075 approval, is dustand water resistant and provides 4 sturdy, wall-mount tabs on the enclosure back for easy installation.
۱-۸ lines are easily accessed on the unit’s bottom via standard threaded fittings.
Electrical wiring access holes are provided on unit’s right and left sides.
NEMA 4 version is easy to use and maintain, with only 4 front panel pushbuttons for instrument configuration.
Rack-Mount Version
Rack-mount version in standard 19” configuration provides handles on both sides of front panel for easy cabinet extraction.
Gas sample line(s) and wiring access are provided in rear of unit.
Rack-mount version is easy to use and maintain, with only 4 front panel pushbuttons to for instrument configuration.
Explosion-Proof Version
The explosion-proof version is UL-listed and rated for Class I, Div. 1, Groups B, C, and D areas and comes with 4 wall-mount tabs on the back corners of the unit.
Explosion-proof model is easily configured using 4-button, wireless IR transmitter that communicates through front panel window.
Window allows for same convenient visual indication of gas concentration and alarm status that exists on additional versions.
All Versions
Configure all user functions through front panel
Monitor 1, 4 or 8 sampling points per instrument
۳ system alarm levels with relays
Normally energized trouble and alarm relays for fail-safe operation
Signal outputs: Sourcing 4-20 mA current output-0-10 VDC signal output-RS-232
Auxiliary input accepts a 4-20 mA analog current signal
Audible alarm output for standard buzzer or user horn
Switch connection resets alarms remotely
Other Options
Heated enclosure for special applications
Z-purged enclosure available for special applications
Built-in auxiliary gas sensor (CO, O2, etc.) available using auxiliary input
Remote relay module provides 3 levels of alarm per monitoring point
Remote display option
Ordering Information
Contact your MSA representative to discuss your Chemgard Photoacoustic Infrared Gas Monitor application.
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