CO Detectors
The CMD5B5 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 also be set to 0-5 or 0-10 V dc. 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. 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 for local configuration of all device parameters. Optional features include one or two alarm relays and/or RS-485 network communications configured for either ModBus or BACnet® protocol.
- Setup/calibration fully menu driven
- Selectable ranges of 0-100, 150, 300, 400 or 500 ppm
- Replaceable Electrochemical sensing element
- Optional on board relays with field adjustable trip point.
- Optional BACnet or Modbus communications
- Powered by either an AC or DC source
- Choice of three field adjustable analog output signals
- Easy to calibrate in the field
For Replacement Sensor Modules
The CMD5B5 Series carbon monoxide detector uses an electrochemical sensor to monitor the carbon monoxide level and outputs a field-selectable 4-20 mA , 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. 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.
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DESCRIPTION |
ENGINEERING SPEC |
|
SENSOR |
CO Sensor, Electrochemical |
|
AGENCY APPROVALS |
Sensor is UL Recognized for ASNI/UL-2034 and UL-2075, E240671 |
|
SAMPLE METHOD |
Diffusion |
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MEASUREMENT RANGE |
0-100, 150, 300, 400, or 500 ppm (selectable) |
|
ACCURACY |
±5 ppm or ±5% of reading (whichever is greater) 0 to 50°C (32 to 122°F), 15 to 95 %RH |
|
STABILITY |
<5% signal loss/year |
|
RESPONSE TIME |
<35 seconds for 90% step change |
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LIFE EXPECTANCY |
5-7 years in air |
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TYPICAL COVERAGE AREA |
700m2 (7500ft2) or 15m (50ft) radius |
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POWER SUPPLY |
24 Vdc ±20% or 24 Vac ±10% (non-isolated half-wave rectified) |
|
CONSUMPTION |
100 mA maximum with all options on |
|
PROTECTION CIRCUITRY |
Reverse voltage protected and output limited |
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OUTPUT SIGNAL |
4-20 mA (Active), 0-5 or 0-10 Vdc (Selectable) |
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OUTPUT DRIVE AT CAPABILITY |
Current: 450Ω maximum Voltage: 10 KΩ minimum |
|
OUTPUT RESOLUTION |
10 bit PWM (±0.4ppm) |
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LCD DISPLAY |
Displays PPM and menu parameters 1ppm, 35mm W x 15mm H (1.$” x 0.6”) Alpha-numeric 2 line x 8 character with backlight |
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STATUS LED |
2 color (red/green) on front panel |
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TEST SWITCH |
Performs I/O tests, front panel and remote connection |
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BUZZER ALARM |
85 db @ 10 cm |
|
BUZZER TRIP POINT |
Programmable 20-500 ppm in 10 ppm increments |
|
BUZZER DELAY |
Programmable 0-10 minutes in 1-minute increments |
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OPTIONAL RELAY OUTPUT |
One or two Form C (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 |
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WIRING CONNECTIONS |
Screw terminal block (14 to 22 AWG) |
|
FIELD CALIBRATION |
By applying calibration gas standard (contact Greystone for calibration kit) |
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COMMUNICATION |
BACnet® or Modbus (Refer to installation instructions for full details) |
|
OPERATING CONDITIONS |
-20 to 50°C (-4 to 122°F), 0-90 %RH non-condensing |
|
STORAGE TEMPERATURE |
-20 to 60°C (-4 to 140°F) |
|
ENCLOSURE |
ABS, UL94-V, IP65 (NEMA 4X) Space: 145mm W x 101mm H x 64mm D (5.7” x 4” 2.5”) Duct: 145mm W x 101mm H x 240mm D (5.7” x 4” x 9.4”) |
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COUNTRY OF ORIGIN |
Canada |
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Catalogue |
