Carbon Dioxide/Temperature/Humidity Sensor - Product # CDD
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Product
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CDD1A7 & CDD1A8
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Range
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0-2000 ppm standard, programmable from 1500 up to 10,000 ppm
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Sensing Element
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Non-Dispersive Infrared Detector (NDIR)
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Standard Accuracy
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±50 PPM or +3% of reading @22ºC(72ºF) when compared to certified calibration gas
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Operation Conditions
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0-50ºC (32-122ºF), 0-95% RH non-condensing
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Temperature Dependence
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0.2% FS per ºC
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Stability
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< 2 % FS over life of sensor (15 years typical)
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Output Signal
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(1A7)4-20 mA active (sourcing) or (1A8) 0-5Vdc or 0-10Vdc
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Output Drive Capability
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Current - 550 ohm max
Voltage - 10 Kohm min
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Pressure Dependance |
0.13% of reading per mm Hg
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Alitiude Correction |
Programmable from 0-5000 ft in 500 ft increments
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Response Time |
2 minutes for 90% step change
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Warm-up Time |
2 minutes
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Power Supply |
20-30 Vac/dc (non-isolated half-wave rectified)
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Consumption |
125mA@24V maximum(70mA typical)
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Input Voltage Effect |
Negligible over specified operating range
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Protection Circuitry |
Reverse voltage protected and output limited
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LCD Display (Optional) |
LCD for displaying PPM level 0-2000, 0-100 %RH and 0-35ºC (32-95ºF) temperature, 1.3”w x 0.55”h (33 x 14 mm)
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Programming and Selection |
Via internal push-buttons and jumper
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Temperature Output Range |
0-35ºC (32-95ºF) or 0-50ºC (32-122ºF) Programmable
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Temperature Output Accuracy |
±0.2ºC (±0.4ºF)
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Humidity Sensor |
Thermoset Polymer Based Capacitive
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Humidity Output Range |
0-100% RH
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Humidity Output Accuracy |
±2%RH
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Humidity Response Time |
15 Seconds Typical
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Humidity Output Hysteresis |
±2%RH
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Humidity Stability |
±1%RH typical @ 50% RH in 5 years
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Wiring Connections |
Screw terminal block (14 to 22 AWG)
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External Dimensions |
Executive Space - 71mm W x 119mm H x 32mm D (2.8" x 4.7" x 1.25")
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