GS-CMD5B5 Carbon Monoxide Sensor (duct Mounted)

Description

The CMD5B4 & 5 Series carbon monoxide detector uses an electrochemical sensor to monitor the carbon monoxide level and outputs a field-selectable 4-20 mA or voltage signal. The voltage signal may be set to 0-5 or 0-10 Vdc.

The sensing range and output may be scaled to either 100, 150, 300, 400 or 500 ppm via the on-board menu. A front panel LCD is standard to ensure easy setup and operation. 

It is available in either wall/surface  or duct mount configurations.

Other standard features include a back light for the LCD, a front panel test switch, status indication and an alarm buzzer. The test function may also be controlled remotely with a digital input signal.  The on-board menu allows local configuration of all device parameters. Optional features include one or two alarm relays and/or RS-485 network communication configured for either ModBus or BACnet protocol.

Options are available to add an LCD Display or Modbus Output instead of Analogue Output. If required, please select from the Recommendations Tab.

This makes it ideal to use with most Data Acquisition Equipment and Data Loggers, or by using the Modbus output straight into a Monitoring System, such as our Orchestrator software.

Features

• Space or duct mount models
• Long-life electrochemical sensor
• Various analog outputs
• LCD display
• Optional relay outputs & audible alarm
• BACnet or Modbus communication option

Specifications

• Sensor Type: Electrochemical Sensor
• Agency Approvals: Sensor is UL Recognized Component for ANSI/UL-2034, UL-2075, E240671
• Measurement Range:  0-100, 150, 300, 400, or 500 PPM (Selectable)
• Accuracy:  ±5 PPM or 5% of reading (whichever is greater)
• Accuracy rated:  0˚ to 50˚C (32˚ to 122˚F), 15 to 95%
• Life Expectancy:  5-7 years in air
• Typical Coverage Area:  700 m2 (7500 ft2) or 15 m (50 ft) radius
• Operating Conditions:  -20˚ to 50˚C (-4˚ to 122˚F), 15 to 95% RH, 0.9 to 1.1 atm
• Sample Method:  Diffusion or flow through sample tube for duct mounted models
• Stability:  <5% signal loss/year
• Response Time:  <35 seconds for 90% step change
• Power Supply:  24 Vdc ± 20% or 24 Vac ± 10% (non-isolated half-wave rectified)
• Consumption:  100 mA max. with all options on
• Protection Circuitry:  Reverse voltage protected and output limited
• Output Signal:  4-20 mA active (Active), 0-5 or 0-10 Vdc  (Selectable)   
• Output Drive at Capability: . 450 ohms max for current output, 10 Kohms min for voltage output 
• Output Resolution:  10 bit PWM (±0.4 ppm)
• LCD Display:  Displays PPM and menu parameters   
  1 PPM resolution, 35 mmW x 15 mm H (1.4” x 0.6”) 
  Alpha-numeric 2 line X 8 character with backlight
• Status LED:  Two color (red/green) on front panel
• Test Switch:  Performs I/O tests, front panel and remote connection
• Buzzer Alarm: 85 db @ 10 feet
• Buzzer trip Point:  Programmable 20-500 ppm in 10 ppm increments
• Buzzer Delay:  Programmable 0-10 minutes in 1 minute increments
• Optional Relay Output: One or two (option) Form C contact (N.O. and N.C.)
  
  5 amps @ 250 Vac, 5 amps @ 30 Vdc, p.f. = 1 
  Relay 1 Trip Point - Programmable 20-500 PPM in 10 PPM increments 
  Relay 2 Trip Point - Programmable 20-500 PPM in 10 PPM increments 
  Relay Hysteresis - Programmable 10-100 PPM in 5 PPM increments 
  Relay Delay - Programmable 0-10  minutes in 1 minute increments
• Optional Communications: BACNet or Modbus (Refer to installation instructions for full details)
• Wiring Connections: Screw terminal block (14 to 22 AWG)
• External Dimensions: Space, 145 x 101 x 64mm (5.7”w x 4”h x 2.5”d)  Duct, 145 x 101 x 240mm, (5.7”w x 4”h x 9.5”d) includes probe
• Enclosure Ratings: Space (4) - ABS - UL94-V - IP65, NEMA 4X 
  Duct (5) - ABS - UL94-V - IP65, NEMA 4X 

Technical

GS-CMD5B5 Carbon Monoxide Sensor Datasheet

Applications

• HVAC / Ventillation / Heating System monitoring