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Document: PSH0109 Rev: 18
tSENSE (Disp) Technical Specication
General Performance:
Storage Temperature Range -30–70°C
Sensor Life Expectancy >15 years
Maintenance Interval 1 Maintenance free
Self-Diagnostics Complete function-check of the sensor module
Display (Disp) Congurable colour LCD with CO2 [ppm], Temperature [°C] and Humidity [%RH]
Buttons Touch display (Disp)
Warm-up Time ≤1min.(@ full specs 15min )
Operating Temperature Range 0–50°C
Operating Humidity Range 0–95%RH, non condensing humidity environment
Operating Environment Residential, commercial
Electrical / Mechanical:
Power Input 12VDC, 24VDC or 24VAC (50–60Hz) ±20%
Power Consumption <0.35W average non-display version, <0.6W display version
Peak Power Consumption <2W
Wiring Connections Screw terminal, max 1.5mm2, Containing: Power, GND, Out1, Out2, Out3, RS485.
Option: passive temperature or relay
CO2 Measurement:
Sensing Method Non-dispersive infrared (NDIR) waveguide technology
Sampling Method Diffusion
Response Time (T1/e) <3min
Measurement Range 0–2000ppmvol.
Accuracy 2 ±50ppm (@1000ppmvol, 17–28°C and 30–60%RH)
Typical full range: ±30ppm +3% of measured value 3, 4
Pressure Dependence +1.58% reading per kPa deviation from normal pressure, 101.3kPa
Measurement Interval 15s
Temperature Measurement:
Measurement Range (T) 0–50°C
Accuracy 5 ±0.5°C (@ 17–28°C), ±1.0°C (outside 0–50°C)
Repeatability ±0.25°C (@ 17–28°C)
Response Time <6min (Air velocity of 0.15m/s)
Measurement Interval 15s
Relative Humidity Measurement:
Measurement Range 0–100%RH
Accuracy 5 ±5%RH (@ 20–80%RH)
Hysteresis ±1%RH (@ 20–80%RH)
Annual Drift <±0.5%RH
Repeatability ±0.25%RH (@ 17–28°C)
Response Time <6min (Air velocity of 0.15m/s)
Measurement Interval 15s
Outputs:
Linear Analog Outputs:
Protection PTC-fuses (auto reset), short-circuit safe
Output Conversion Accuracy ±2% of reading ±20mV
Output Signal Voltage output 0–10V, Rout <100Ω, Load: >5kΩ
Output Resolution 10-bits, 10mV steps, 0.1% steps of full ppm/°C/%RH range
Out1: CO2 6 0–10V, corresponds to 0–2000 ppmvol, at screw terminal
Out2: Temperature (T) 7 0–10V, corresponds to 0–50°C, at screw terminal
Out3: Relative Humidity (RH) 7 0–10V, corresponds to 0–100%RH, at screw terminal
Digital Output:
Relay (RL) 6 On ≥1000 ppmvol CO2, Off ≤900ppmvol, CO2, at screw terminal
Form C / DPDT, Imax: 1A/50VAC/24VDC
Input Source CO2 / T / RH (congurable via touch display)
Note 1: No maintenance required in normal indoor air as ABC
(Automatic Baseline Correction) is used.
Note 2: In normal IAQ applications, accuracy is dened after minimum three (3) ABC-pe
riods of continuous operation with ABC.
Note 3: Accuracy is specied over operating temperature range. Specication is refer
enced to certied calibration mixtures. Uncertainty of calibration gas mixtures
(±1% currently) is to be added to the specied accuracy for absolute measurements.
Note 4: Repeatability is included. Uncertainty of calibration gases (±1%) is added to the
specied accuracy.
Note 5: Depending on display brightness setting.
Note 6: Can be congured with PC software UIP (version 5 or later). See information at
senseair.com