SenseAir aSENSE User Manual
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SenseAir aSENSE User Manual

Temperature transmitter
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Gas and Air Sensors
CO
General
The IAQ-sensor product aSENSE is used to measure indoor air carbon dioxide
concentration and temperature in rooms. The aSENSE is available both with and
without display, (LCD). Both are available for wall mounting as well as for duct
mounting.
The unit is designed for connecting to Direct Digital Control (DDC). The linear output
functions are pre-programmed as CO
selected outputs 0-10 V / 2-10 V / 0-20 mA / 4-20 mA. The measuring ranges can be
modified from a PC (Windows NT, XP, 7) and use of the software UIP (version 5 or
higher) together with the RS232 communication cable.
Figure 1 aSENSE for wall mounting and duct mounting
User Manual
aSENSE
/ temperature transmitter
2
and temperature transmitters with jumper
2
Document
Rev
UMA 139
2
Page
1 (7)

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Summary of Contents for SenseAir aSENSE

  • Page 1 / temperature transmitter General The IAQ-sensor product aSENSE is used to measure indoor air carbon dioxide concentration and temperature in rooms. The aSENSE is available both with and without display, (LCD). Both are available for wall mounting as well as for duct mounting.

  • Page 2: Output Configurations

    Out(1) 0-10VDC 0-2000 ppm CO Out(2) 0-10VDC 0-50 32-122 Table I. Default output configurations for aSENSE Formulas for calculation of output values Configuration Output Range Formula for calculation 0-10 VDC 0-2000 ppm CO value = Volt/10*2000 0-50...

  • Page 3: Self-Diagnostics

    Voltage Please note! Temperature measurements accuracy is valid only for units configured in voltage outputs mode. Table II. Configuration jumpers for aSENSE Self-diagnostics The system contains complete self-diagnostic procedures. A full system test is executed automatically every time the power is turned on. In addition, constantly during operation, the sensor probes are checked against failure by checking the valid dynamic measurement ranges.
  • Page 4 Error code and action plan Bit # Error Error description Suggested action code Fatal Error Try to restart sensor by power OFF/ON. Contact local distributor Reserved Algorithm Error. Try to restart sensor by power Indicate wrong EEPROM OFF/ON. configuration. Check detailed settings and configuration with UIP software version 5 and higher.

  • Page 5: Maintenance

    Calibration bag can be used to produce carbon dioxide free air. The software can be free downloaded from www.senseair.com. The RS232-cable and the zero calibration bag can be ordered from SenseAir. The cable is to be connected to the UART port slide connector (see Fig. 5). For change of control parameters and re-calibration and temperature) this PC tool has to be used.

  • Page 6: Duct Mounting

    When putting the PCB back in the protective housing, the probe must be gently positioned in the sampling tube. Figure 3 The aSENSE printed circuit board Figure 4 The aSENSE for duct mounting. The temperature probe is the black body in the sampling tube Document...

  • Page 7: Warranty And Limitation Of Liability

    Figure 5 Terminals and jumpers on aSENSE. The darker positions are default settings. The start point jumper is not mounted on some models. WARRANTY AND LIMITATION OF LIABILITY 1. SenseAir warrants that for a period of twenty-four (24) months following receipt by...

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