EdgeTech DCM 28
Dew Point and Carbon Monoxide (CO) Monitor

EdgeTech DCM 28 Shown

Product Information
Datasheet	87 KB
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2 sensors housed in one wall mount enclosure
24Vdc power
Audible and visual alarm
2 line LCD display (displaying CO and dew point)
Fast response
NFPA 99 compliant

Edgetech's DCM 28 measures dew point and CO in Medical Air applications. This medical gas analyzer was designed for fast, accurate and economic measurement of carbon monoxide and dew point in compliance with NFPA 99. A simple menu-driven software and LED display allow for easy and fast start-up of the instrument. The Model DCM28 is a stand alone unit complete with a small sampling system and all needed accessories.

The carbon monoxide can be measured in the range of 0-100ppm and the dew point in the range of -40°C up to 60°C. The DCM 28 is a compact economic instrument with sensors remotely separated from the electronics. The DCM-28 sensors have a long operating life.

Ranges: The CO can be measured in the range of 0-100ppm and the dew point in the range of -40°C up to 60°C.
Alarms: 3 programmable alarm contacts, 1 form B 3A at 250Vac. This unit includes an alarm out via relay contacts and an audio alarm (95db). Relay set points for Dew Point, CO and Regen (Dryers).
Sensor Operating Life: The CO sensor is an electrochemical sensor with a sensor life of 2 years, with a drift <5% of measuring per year. The drift can be corrected via calibration using a traceable calibration gas. The RH capacitance sensor is durable and can be either recalibrated or replaced in the field very quickly by exchanging sensor tips while maintaining the sensor accuracy.
Benefits: Compact economic instrument with sensors remotely separated from the electronics. Sensors with long operating life

Specifications
Sensor Type	Carbon Monoxide (CO)	Dew Point
Measuring Range	0 - 50 ppm CO	-40°C to 60 °C
Calibration	With traceable calibration gas	Field replaceable sensor (no cal needed)
Accuracy	± 2% of full scale	Typical ± 1°C
Resolution	0.1 ppm	0.1 ppm
Response Time	90% of FSD at 25°C <45s	66% change in <10sec
Operating Temperature	0 - 50°C	0 - 50°C
Sample Pressure	0.1 - 1 barg	0-200psi (DP reading at pressure)
Output Signal	4-20mA/DC isolated	4-20mA / DC isolated
Alarm	1 form B relay 3A 250V	1 form B relay 3A 250V
Voltage	24 VDC	24 VDC
Sensor	Electrochemical sensor	Capacitive sensor
Sensor Warranty	1 year from dispatch	1 year from dispatch
Expected Sensor Life	Minimum 2 years	2 years