Senseair CO2 Temperature and Relative Humidity Sensor User Manual
- June 5, 2024
- Senseair
Table of Contents
Senseair CO2 Temperature and Relative Humidity Sensor
General
TSENSE VAV No Disp for wall mounting measures indoor air carbon dioxide concentration, temperature, and relative humidity in rooms. The unit connects to Direct Digital Control (DDC). Linear outputs are pre-programmed as CO2, temperature, and relative humidity controllers. Output parameters can be modified from PC (Windows) software UIP (version 5 or higher) and USB communication cable, alternative via Modbus or BACnet.
Opening of housing
Installation Manual
Download software UIP5 senseair.com
Connection to PC via a phone jack Connect Interface cable USB- 3.5mm Art.no.:00-0-0070
Check for updates
Output configurations
The sensor is supplied with 0- 10VDC linear analog outputs for Out(1), Out(2), and Out(3) (see table 1). Alternative output ranges can be configured via PC software UIP (version 5 or later). See information at senseair.com
Out1/Out2/Out3 e.g Each output consists of four blocks. Each block has nine source options. OUT1 (OUT2/ OUT3/(Relay)) is the largest (Max of a, b, c) demand from Proportional-bands.
- OUT1=Max of Out1_a/ Out1_b/ Out1_c minus (sub)
- Out1_d 5V (Out1o) – 0V (Out1_d Disabled) = 5V => OUT1=5V
Voltage range
Max (the same approach with “Min”)
Select source
Each output consists of four blocks. Each block has nine source options.
Types
Analogue/Analogue Invert
(The same approach with “Digital/Digital Invert”)
Proportional-band settings
Low (the same approach as “High”)
Outputs
Relay
Communication settings
Address/Baudrate UIP5 Address
UIP5 Baudrate
NOTE!
- UIP baudrate : RS-485 baudrate if tSENSE VAV No Disp is connected via phone jack (see fig. 2).
- UIP baud rate = RS-485 baud rate if tSENSE VAV No Disp is connected via screw terminal (see fig. 3).
- To change settings via UIP requires Reset (Power OFF- Power ON) to execute them.
Connect meter
Check for updates
Connection configurations
- UIP baudrate + RS-485 baudrate if tSENSE VAV No Disp is connected via phone jack (see fig. 2).
- UIP baudrate = RS-485 baudrate if tSENSE VAV No Disp is connected via screw terminal (see fig. 3).
- To change settings via UIP requires Reset (Power OFF – Power ON) to execute them.
Measured values
Temperature unit selection
- Calibration options cO2
- Zero ca/Background/Target cal
Background calibration button
ABC
Enable/Disable
ABC period (ABC target/ Altitude/ Restore cal)
Automatic system test
A full system test is executed automatically at every power-up. Sensor probes are checked constantly during an operation against failure by checking valid dynamic measurement ranges. System checks return error bytes to RAM. Error codes are available by connecting the sensors to a PC with a special USB cable (art.no. O0-0-0070) connected (see fig. 2). Error codes are shown in software UIP (version 5 or higher) at “Meter information – Error Flags”
UIP Logger
Alternative 1
NOTE!
The log consists of 15 min averages, 672 (4 x 24h x 7d) data points for each value. tSENSE has no real-time clock (no timestamps in the sensors log). If the sensor has not been powered on continuously, time between data points can be much longer than 15 minutes. Timestamps in UIP log file are added by UIP. Chart 24h and Week (7 days) plots use data from the same log.
Export Logger Data
Alternative 2
Log to file
Error codes and action plans
Red LED indicates that one or several error codes are active.
Table 2: Error codes and action plans
- Occurs if the probe is out of range, at very high CO2 values. Error code resets measured values return to normal. May also indicate the need for zero point caliber normal and error code remains, the sensor can be a defect or the connection
- If several errors are detected at the same time, different error code numbers into one single error code!
- Sensor accuracy is defined at continuous operation (at least three (3) weeks:
- Maintenance
- TSENSE VAV No Disp is maintenance-free. Internal self-adjusting calibration normal long-term drift. To secure the highest accuracy, a time interval of five yea between CO2 calibrations, unless some special situations have occurred.
- The software can be downloaded free at www.senseair.com USB-cable and a zero calibration kit can be ordered from Sinclair.
- Check can be done on site without interfering with a ventilation system.
- Cleaning (exterior only)
- Use mild detergent (no harsh chemicals) and wipe dry with a dry cloth.
References
- Air quality & Gas sensing technology from Senseair
- Air quality & Gas sensing technology from Senseair
- Air quality & Gas sensing technology from Senseair