Greystone Energy Systems CMD Series Catalog Page

CARBON MONOXIDE

(CO) DETECTORS

CMD Series

Precision gas
control/sensing

FEATURES:

• Space or duct mount models

• Long-life electrochemical sensor

• Various analog outputs

• LCD display

• Optional relay outputs & audible alarm

• BACnet or Modbus communication

Peace of mind

through reliable

gas monitoring

GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

DESCRIPTION:

The CMD5B1 Series carbon monoxide detector uses a superior electrochemical sensor for reliability and
accuracy in even the most critical applications. The standard product features a 2-wire loop-powered
output. Optionally, the device may congured with an alarm relay which operates in 3-wire sourcing
mode and/or with Modbus communications.

85 mm

3.4 “

71 mm

2.8 “

52 mm

2 “

48 mm

1.9 “

104 mm

4.1 “

SPECIFICATION:

Sensor Type .........................................................Electrochemical

Sensor Agency Approvals .............................. Sensor is a UL Recognized Component for ANSI/UL-2034, UL-2075, E240671

Measurement Range........................................ Analog: 0-300 PPM Modbus: 0-500 PPM

Accuracy............................................................... ±5 PPM or 5% of reading for 0-300 PPM (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 .....................................

Operating Conditions......................................-20˚ to 50˚C (-4˚ to 122˚F), 15 to 95% RH

Sample Method .................................................Diusion

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 rectifed) Modbus: 24 Vdc ±20%

Consumption......................................................20 mA max. with Relay option: 50 mA max. Modbus: 35 mA max.

Input Voltage Eect .......................................... Negligible over specied operating range

Protection Circuitry...........................................Reverse voltage protected and output limited

Output Signal...................................................... 4-20 mA loop-powered, 4-20 mA sourcing with relay option

Output Drive at Capability............................. 550 ohms max. @ 24 Vac/Vdc

Optional Relay Output ....................................

.................................................................................

.................................................................................

.................................................................................

Optional Modbus .............................................. Hardware..................................2-wire RS-485

Software ..................................... Native ModBus MS/TP protocol (RTU)

Baud Rate................................... 9600

Slave Address Range.................... Locally set to 1-255

Parity..................................................None

Stop Bits............................................ 1

CRC................................................A001 (CRC-16 reverse)

Wiring Connections.......................................... Screw terminal block (14 to 22 AWG)

External Dimensions ........................................71 x 104 x 48 mm (2.8” w x 4.1“ h x 1.9”d)

Enclosure Ratings..............................................ABS - UL94-V - IP65, (NEMA 4X)

Field Calibration................................................. By applying calibration gas standards (Contact Greystone for calibration kit)

Accessories ..........................................................Calibration kit, model# CMD-CALKIT-GS

700 m2 (7500 ft2) or 15m (50ft) radius

Form C contact (N.O. and N.C.) - Not available with Modbus Communications
5 amps @ 250 Vac, 5 amps @ 30 Vdc, p.f. = 1
Trip Point - 25, 60 or 150 PPM, jumper selectable
Hysteresis - 3% or 9 ppm

PRODUCT ORDERING INFORMATION:

MODEL Description

CMD5B1 Carbon Monoxide Detector (CO), Electrochemical, Loop-powered

CODE Relay

000 No Relay
100 Relay (Not available with Modbus Communications)

CODE Options

MOD Modbus Communications

CMD5B1 -

Greystone Energy Systems Inc. reserves the right to make design modications without prior notice.

100

Typical Model Number