SMC 20X/200X Solid State Gas Detectors

All-weather, single-gas detector for continuous area monitoring.

The SMC 20X/200X are single-gas detectors used to monitor combustible gas, hydrogen sulfide (H2S) or carbon monoxide (CO). The detectors are based on solid-state technology, a simple and robust method of detection capable of detecting low parts-per-million (ppm) levels of gas. With the exception of periodic calibration to verify the alarm setting, no attention is required after installation. 
  • No Periodic Maintenance - operate detectors free of maintenance; no need to replace chemical cells
  • Explosion-Proof Enclosure (20X) - continuously operates in work areas where hazardous gases could be present
  • Compact Unit - easily install and connect to an alarm panel
  • Self-Check (200X) - detect sensor failure for reliable operation
  • Dry Contact Relay - allows for connection to remote fire panels

Model Numbers

  • Model 20X Series - All-Weather, Explosion Proof
    • 201 - Combustible Gas
    • 203 - Hydrogen Sulfide
    • 206 - Carbon Monoxide
  • Model 200X Series - Compact
    • 2001 - Combustible Gas
    • 2003 - Hydrogen Sulfide
    • 2006 - Carbon Monoxide
Sensor Type
  • 20X/200X
    • Solid State MOS (Metal Oxide Semiconductor)
Indicators
  • 20X
    • Internal LED for calibration
  • 200X: Visual
    • Green LED for Monitor “ON”/Safe
    • Red LED for Alarm
    • LEDs oscillate on/off for sensor failure
  • 200X: Audible
    • Sustained alarm tone for as long as gas is present. Interrupted tone or sensor failure
Range (at 50% relative humidity)
  • 201/2001
    • 300 - 2,000 ppm Hydrogen
    • 500 - 10,000 ppm Methane
  • 203/2003
    • 10 - 50 ppm Hydrogen Sulfide (H2S)
  • 206/2006
    • 50-500 ppm Carbon Monoxide (CO)
Periodic Maintenance
  • 20X/200X
    • None, other than routine calibration
Factory Alarm Setpoint (200X)
  • 2001
    • 1000 ppm Methane
  • 2003
    • 50 ppm H2S
  • 2006
    • 100 ppm CO
Input
  • 20X/200X
    • 9 - 24 VDC (+/- 1 V), 250 mA
  • 200X
    • Plug-in 120 VAC AC/DC Power Supply is provided
Output
  • 20X/200X
    • 0.5 AMP dry contact, 100 VAC, 130 VAC Nominal 5 volts DC, source 25 mA SAFE and ALARM signals
  • 200X
    • SAFE and ALARM signals 70 dB buzzer TTL interface to Model 2102 Alarm Panel is user configurable
Response Time
  • 201/2001
    • Less than 30 seconds
  • 203/2003
    • Less than 60 seconds
  • 206/2006
    • Less than 30 seconds
Operating Temperature Range
  • 20X/200X
    • -4 o to 158oF (-20o to 70oC)
Enclosure Material
  • 20X
    • Cast aluminum for protection against galvanic corrosion
  • 200X
    • Aluminum
Enclosure (20X)
  • Class I, Division 1, Groups C, D
Size
  • 20X
    • 6.75 x 4.0 x 3.5 in. (17.1 x 10.2 x 6.0 cm)
  • 200X
    • 3.7 x 2.2 x 1.1 in. (9.4 x 5.7 x 2.8 cm)
Weight
  • 20X
    • 24 oz. (678 g)
  • 200X
    • 3.8 oz. (108 g)

Approvals subject to change without notice and may differ based on configuration, part number and/or country.
Contact Customer Service or check approval label on product for specific approval information.

Approved to UL 61010-1:2001, CSA-C22.2