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Gas leak detectors, analyzers, alarm devices and calibration gas
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Houston, TX USA

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$639.45     Availability: 3 Days
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CTI GasGuard CO Carbon Monoxide Electrochemical Sensor (0-200 ppm) for gas leak detection in food processing areas, warehousestank rooms and others. No false alarms. 4-20 mA output, 24VDC power supply and NEMA 4X polycarbonate enclosure.

Part# with Options:        GG-CO-200
Price with Options:        639.45


(1) Enclosure for CTI GG
Relay Output
(2) Fail-Safe Relay Output for Calibration Technologies GasGuard Detectors
RM420 Relay Output




RM420 Relay Output

Availability 3 Days  ]

Key Features

  • CO specific electrochemical sensor technology. No false alarms
  • 5 years cell life average in most applications
  • Industry standard linear 4/20 mA output
  • Corrosion, weather and chemical resistant polycarbonate sensor enclosure
  • Intelligent-design enclosure temperature control for improved cell life
  • Sensor designed to adapt to any harsh environment from -20F to +120F
  • Accurately monitor OSHAs PEL, STEL and IDLH setpoints for personnel protection
  • Real-time continuous monitoring for early warning.
  • Detectable range: 0-200 ppm

The GasGuard CO utilizes proven electrochemical sensor technology for fast and accurate leak detection. The standard detection range of the GasGuard CO provides real-time continuous monitoring of carbon monoxide concentrations accurately down to 10 ppm, with no false alarms.

Every GasGuard CO sensor comes equipped with an intelligent internal temperature control designed to perform in the harshest of areas. The controlled environment provides optimum moisture control for extended cell life. The high-quality injection- molded polycarbonate enclosure offers excellent chemical corrosion protection and high impact resistance.

The GasGuard CO provides an industry standard linear 4/20 mA output signal compatible with most gas detection systems and PLCs. The output signal is not affected by drastic temperature variations such as washdowns, defrost cycles, etc. Expect an average of 5 years cell life for most applications.


  • Food Processing areas
  • Warehouses
  • Air Quality Monitoring
  • Tank Rooms
  • Ventilation Ducts
  • Breweries
  • Parking Garages
  • Modified Atmosphere Packaging
  • Bottling Plants
  • Chemical Manufacturing

  • Low cost
  • Simple operation
  • Rugged and reliable

The standard GasGuard CO sensor is designed to work anywhere, and at a lower base-model price than most of our competition. With only one sensor for any application, designing, ordering and maintaining your carbon monoxide monitoring system is less hassle.

Developed for chemical washdowns of processing areas, the GasGuard CO is prepared to survive in just about any harsh industrial condition. Every circuit board is sealed forever in potting compound, protecting electronic components and copper tracing from corrosion. A specially vented chemical-resistant polycarbonate enclosure protects the sensor from accidental damage, weather and even direct hose-hits from clean-up crews.

GASES: Carbon Monoxide (CO)
OUTPUT SIGNAL: Linear 4/20 mA (max input impedance: 700 Ohms)
RESPONSE TIME: T50 = less than 10 seconds
T90 = less than 30 seconds
ACCURACY: +/- 5% of value, but dependant on calibration gas accuracy and time since last calibration
ZERO DRIFT: Less than 0.1% of full-scale per month, non-cumulative
SPAN DRIFT: Generally less than 2% per month
LINEARITY: +/- 0.5% of full-scale
REPEATABILITY: +/- 1% of full-scale
WIRING CONNECTIONS: 3 conductor, shielded, stranded, 20 AWG cable (General Cable C2525A or equivalent) up to 1500 ft.
ENCLOSURE: Injection-molded NEMA 4X polycarbonate
Hinged lid with captive screw. For non-classified areas.
TEMPERATURE RANGE: -20F to +120F (-29C to +49C)
HUMIDITY RANGE: 5% to 100% condensing
DIMENSIONS: 7.5 high x 6.5 wide x 3.75 deep
WEIGHT: 2 lbs

    RM420-LR Calibration Technologies Adjustable Setpoint Relay, 24Vdc 4-20mA to relay module, fail-safe relay output to any 4-20 mA device. SPDT relay, Form C contacts...

    GG-EM CTI GasGuardian EM Entrance Monitor Controller/Alarm Panel for stand-alone or feed-through applications. 10A SPDT relay, 10-segment LED bargraph display of gas concentration, 4-20 mA input and NEMA 4X enclosure. ..

    GG-2 CTI GasGuardian 2 2-Channel Controller/Alarm Panel for simultaneously monitor of two sensor locations. 6 onboard relays, horn relay, alarm log, 4-20 mA input, LCD display and NEMA 4X enclosure designed for washdown and outdoors. ..

    GG-6 CTI GasGuardian 6 6-Channel Controller/Alarm Panel for simultaneously monitor of up to 30 sensors (with expansion modules). 6 onboard relays, horn relay, alarm log, 4-20 mA input, LCD display and NEMA 4X enclosure designed for washdown and outdoors. ..

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CM-16A (1235) MACURCO  CM-16A

MACURCO Carbon Monoxide (CO) Detector CM-16A. Low voltage (12-24V AC or DC). One SPDT alarm relay. ********DISCONTINUED ********** Replaced by CM-E1



CS102A (639) MACURCO  CS102A

Macurco CS102A carbon monoxide transducer features an electrochemical sensor, status LED, 12-24 VAC or VDC operation and 1-3VDC output (0-250ppm). For use with the MACURCO SS103 Controllers and HVAC/Building Automation Systems *********** DISCONTINUED ********* Replaced by CM-6



CM-4 (636) MACURCO  CM-4

Macurco CM-4 carbon monoxide gas detector and transducer features a status LED, 12-24 VAC or VDC operation, 4-20ma and 1-3VDC outputs (0-200ppm). For use with the MACURCO DVP-120 or SS103 control panels and HVAC/Building Automation Systems. ********** DISCONTINUED ******** Replaced by CM-6



CM-2B (634) MACURCO  CM-2B

Macurco CM-2B carbon monoxide gas detector and transducer features a digital display (0-250ppm), NEMA 1 enclosure, 24 VAC or VDC operation, and 4-20ma output. For use with the MACURCO DVP-120 control panel and HVAC/Building Automation Systems. ETL Listed. ***** DISCONTINUED. Replaced by CM-6 *****



CM-21A (633) MACURCO  CM-21A

MACURCO CM-21A is a low voltage, dual relay Carbon Monoxide (CO) gas detector and controller. The CM-21A uses an electronic detection system to measure the concentration of CO and provide automatic exhaust fan control to help ensure a safe environment in parking garages or maintenance facilities. The CM-21A is factory calibrated and 100 % tested for proper operation, but can also be calibrated in the field.********DISCONTINUED********** Replaced by CM-6



CM-1B (632) MACURCO  CM-1B

Macurco CM-1B is a stand alone carbon monoxide gas detector and controller featuring a digital display, buzzer, 12-24VAC or VDC, operation, SPDT fan relay and NO alarm relay. *********** DISCONTINUED ********* Replaced by CM-6



904-0012-01 (4485) COSTAR  904-0012-01

Quantum Eye Carbon Monoxide (CO) Detector. Minimum 18 Month Sensor Life. Multilevel detection. Biomimetic Technology. Customer assembly not required.



CM-E1 (638) MACURCO  CM-E1

Macurco CM-E1 Carbon Monoxide gas detector for residential and commercial office environment. Flush or surface mount options, alarm and trouble relays, and 85 dB buzzer. 9-32 VDC input. NFPA 720-2009 and UL 2075 listed. CSFM Approved.



6300-1018 (2703) BACHARACH  6300-1018

Bacharach MGS-150 Gas Detector Transmitter with electrochemical sensor for Carbon Monoxide (CO) 0-100ppm for Parking Garage Applications. 4-20mA, 0-5V, 0-10V, 1-5V or 2-10V user selectable analog outputs. Onboard Alarm LED, audible buzzer and alarm relay. IP41 Housing (IP66 optional) and Remote sensor option. CE, IEC61010, Exd and UL CSA Approvals.



CM-6 (637) MACURCO  CM-6

MACURCO CM-6 low voltage gas detector, controller and transducer for Carbon Monoxide (CO) 0-200 ppm. Selectable 4-20 mA output, buzzer, alarm and fan relays with digital display. 12 to 24 VAC or 12 to 32 VDC power. ETL Listed to UL 61010-1. Optional LADBS approval.



CM-12 (3415) MACURCO  CM-12

MACURCO CM-12 line voltage Gas Detector, controller and transducer for Carbon Monoxide (CO) 0-200 ppm. Selectable 4-20mA output, buzzer, alarm and fan relays with digital display. 100 to 240 VAC 50-60Hz power. ETL Listed to UL 61010-1.



905-0000-09 (4484) COSTAR  905-0000-09

COSTAR 24VC-e Carbon Monoxide (CO) Ventilation Fan Controller. Cuts down energy usage by up to 85%. 12 year end of live. ETL Listed to UL standard 2075. Monitors up 10000 sq ft, Easy Installation. Temperature Compensation. Electrochemical Sensor, Relay Output. 2 year warranty on Detector.



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