CARBON DIOXIDE SENSORS


CDT Series
Carbon Dioxide Sensors
Optional Temperature Sensor

Single beam dual-wave length non-dispersive infrared (NDIR)

Supplied factory calibrated for 0 to 2000 ppm CO₂

Output signal: 4-20 mA, 0-5 VDC or 0-10 VDC field selectable

Input power: 16 to 35 VDC or 19 to 28 VAC.
Power consumption: 2 watts average; 3.75 watts peak.

Accuracy: +/-3% of reading or +/-40 ppm.

Pushbuttons for use with integral LCD display or A-449 remote display
● can display CO₂ only, temperature only, or CO₂ and temperature
● provide menu for relay setpoints, sensor output scaling and more
● used in field calibrating sensor					Model with Integral LCD Display
● can be locked with internal jumper to prevent tampering

Operating Temperature: 32^OF to 122^OF (30^OC to 50^OC).
				See chart below for temperature sensor codes
		With	With	Dynacon	Select	Enter
CO₂ Output Signal	Temperature Output Signal	LCD	Relay	Part No.	Price Break	Quantity
4-20 mA, 0-5 VDC, 0-10VDC	none	---	---	CDT-2W40
4-20 mA, 0-5 VDC, 0-10VDC	4-20 mA, 0-5 VDC, 0-10VDC	---	---	CDT-2W44
4-20 mA, 0-5 VDC, 0-10VDC	NTC Thermistor or RTD	---	---	CDT-2W4
4-20 mA, 0-5 VDC, 0-10VDC	none	X	---	CDT-2W40-LCD
4-20 mA, 0-5 VDC, 0-10VDC	4-20 mA, 0-5 VDC, 0-10VDC	X	---	CDT-2W44-LCD
4-20 mA, 0-5 VDC, 0-10VDC	NTC Thermistor or RTD	X	---	CDT-2W4-LCD
4-20 mA, 0-5 VDC, 0-10VDC	none	---	X	CDT-2W40-RLY
4-20 mA, 0-5 VDC, 0-10VDC	4-20 mA, 0-5 VDC, 0-10VDC	---	X	CDT-2W44-RLY
4-20 mA, 0-5 VDC, 0-10VDC	NTC Thermistor or RTD	---	X	CDT-2W4-RLY
4-20 mA, 0-5 VDC, 0-10VDC	none	X	X	CDT-2W40-LCD-RLY
4-20 mA, 0-5 VDC, 0-10VDC	4-20 mA, 0-5 VDC, 0-10VDC	X	X	CDT-2W44-LCD-RLY
4-20 mA, 0-5 VDC, 0-10VDC	NTC Thermistor or RTD	X	X	CDT-2W4-LCD-RLY
	Remote LCD display (plugs into port on sensor)			A-449	60.00
			▼ insert code below for type of temperature sensor
			A = 10,000Ω NTC thermistor, type III
			B = 10,000Ω NTC thermistor, type II
A-449 Remote			C = 3000Ω NTC thermistor
LCD Display			D = 100Ω platinum RTD
			E = 1000Ω platinum RTD
			F = 20,000Ω NTC thermistor