CDD5A100 Carbon Dioxide, Temp/RH Sensor, Room, 4-20mA Op

Description

The CDD5 Series CO2/Humidity/Temperature transmitter incorporates three sensors in one attractive wall mount enclosure for the most efficient environmental monitoring and control system. It uses highly accurate and reliable Non-dispersive Infrared (NDIR), Thermoset Polymer based capacitance humidity sensor and curve matched thermistor combined with state-of-the-art digital linearization and temperature compensated circuitry in an attractive, low profile enclosure to monitor room CO2, humidity & temperature levels and provides a linear analog signal output of 4-20 mA, 0-5 or 0-10 Vdc signals. The CDD5 is available with CO2 ranges of 0-2000 ppm  or 0-20,000 ppm (Dual-channel). An optional LCD display is available that is fully programmable to show only the parameters required.

Features

• Outputs CO2, Temperature & RH Levels
• 3 analog outputs
• 0-2000 or 20,000 (Dual-channel) PPM CO2 ranges
• Patented self-calibration algorithm
• Guaranteed 5 year calibration interval
• Easily field calibrated

Specifications

• CO2 Signal:
  Measurement Type:
  CDD5A & B - Non-Dispersive Infrared (NDIR)
  CDD5C & D - Dual Channel Non-Dispersive Infrared(NDIR), diffusion sampling
  Range:
  CDD5A & B - 0-2000ppm
  CDD5C & D - 0-20,000ppm standard, programmable span from 2000 to 20,000ppm Standard
  Accuracy:
  CDD5A & B - ± 30ppm +3% of reading with Auto Cal on
  CDD5C & D - ±75ppm or 10% of reading (whichever is greater)
  Temperature Dependence: 0.2% FS per °C
  Stability:
  CDD5A & B - <2% FS over life of sensor (15 years typical)
  CDD5C & D - <5% FS over life of sensor (15 years typical)
  Pressure Dependence: < 0.13% of reading per mm Hg
  Altitude Correction: Programmable from 0-5000 ft via keypad
  Response Time: <2 minutes for 90% step change typical Warm-up Time: <2 minutes
• TEMPERATURE SIGNAL
  Sensing Element: Precision thermistor
  Range: 0 to 35°C (32 to 95°F) or 0 to 50°C (32 to 122°F) selectable via keypad
• RH SIGNAL
  Sensing Element: Thermoset polymer based capacitive
  Accuracy: ±2 %RH
  Range: 0 to 100 %RH, non-condensing
  Hysteresis: ±3 %RH
  Response Time: 15 seconds typical
  Stability: ±1.2 %RH typical @ 50 %RH in 5 years
• OPTIONAL RELAY OUTPUT
  Contact Ratings: Form A contact (N.O.), 2 Amps @ 140 Vac/30 Vdc
  Relay Trip Point:
  CDD5A & B - Programmable 500 - 2000ppm via keypad
  CDD5C & D - Programmable 500-15,000ppm via keypad
  Relay Hysteresis:
  CDD5A & B - Programmable 25-200ppm via keypad
  CDD5C & D - Programmable 25-500ppm via keypad
• OPTIONAL LCD DISPLAY
  Resolution: 1ppm CO2 1 %RH, 1°C (1°F)
  Size: 35mm W x 15mm H (1.4” x 0.6”) alpha-numeric 2 line x 8 character
  Backlight: Enable or disable via keypad
• OPTIONAL OVERRIDE SWITCH: Front panel push-button available as two-wire dry-contact output
• OPTIONAL SETPOINT CONTROL:  Front panel push-buttons available as two-wire resistive output, 0-10 KΩ standard
• POWER SUPPLY 20-28 Vdc/ac (non-isolated half-wave rectified)
• OUTPUT SIGNALS
  Current: 4-20 mA (Model CDD5A & C)
  Voltage: 0-5 Vdc or 0-10 Vdc (Model CDD5B & D)
• CONSUMPTIONS
  Current: 145 mA max @ 24 Vdc, 260 mA max @ 24 Vac (with all options)
  Voltage: 85 mA max @ 24 Vdc, 150 mA max @ 24 Vac (with all options)
• OUTPUT DRIVE CAPABILITY
  Current: 550Ω max
  Voltage: 10 KΩ min
• OUTPUT RESOLUTION 10 bit PWM
• PROTECTION CIRCUITRY Reverse voltage and output limited
• OPERATING CONDITIONS 0 to 50°C (32 to 122°F), 5 to 95 %RH non-condensing
• SENSOR COVERAGE AREA 100m2 (1000ft2 ) typical
• WIRING CONNECTIONS Screw terminal block (14 to 22 AWG)
• ENCLOSURE White ABS, 84mm W x 119mm H x 29mm D (3.3” x 4.7” x 1.15”), IP30 (NEMA 1)
• COUNTRY OF ORIGIN Canada

Technical

CDD5 CO2, Temp, RH Transmitter datasheet