Nalnor HRQ-ERGO-SENS-CO2-W User manual

HRQ-ERGO-SENS-CO2-W
Function Introduction
Main function of HRQ-ERGO-SENS-CO2-W sensor is room CO2 concentration
detection. HRU-CONT-TPAD is needed for operation.
Technical specification
Sensor technology: NDIR infrared CO2 detection
Measurement range 400-2000ppm CO2
Maximum drift: ±2%
Resolution: 10ppm
Temperature influence: ＜0.5% FS per °C
Response time (T90): ＜120S
Accuracy: 75ppm
Repeatability: ＜2%
Sample mode: diffussion
Power supply: DC5V±5%
Operating current : average 70mA, peak value 120mA
PWM linear output
UART: data bits 8; stop bit 1; check bit: No
Standard baud rate: 9600bps
Operating temperature: -10 to 50°C
Operating humidity: 0-95%

Dimmensions:

Connection to ERGO (from User Manual):
Configuration in HRU-CONTR-TPAD:
Please refer to User Manual for TPAD.
Parameter setting
Keep pressing the MODE button for 6 seconds, after buzzing to enter the parameter setting interface.

After entering the parameter setting interface, press SET button shortly to change the parameter
number, every pressing will increase 1 parameter number (until number 24 then repeat again). After
choosing the correct parameter number, press Mode button for short, parameter value flashes at the
top right corner, at this time to change the value by UP and DOWN buttons. After parameters setting
then press SET button to save.
Attention:
1) After parameters setting, system need around 15 seconds to record, during this period power should
not be off.
2) Please refer to the parameters table to set the suitable parameters according to different requests.
Values of parameter no. 07
PPM Value
28
392
33
500
3E
607
48
705
52
803
5C
902
66
1000 (default value)
71
1107
7B
1205
85
1303
8F
1401
99
1500
A4
1607
AE
1705
B8
1803
C2
1901
C8
1960
Control Algorithm of CO2 sensor
After connecting the optional CO2 sensor, the CO2 symbol will display on the screen. If CO2
concentration is higher than setting value (default 1000 PPM), then ERGO runs at highest speed
automatically, after CO2 concentration is lower than setting value, then ERGO returns back to
the previous speed, if the unit is already in highest speed when CO2 concentration is higher than
set value, then unit keeps the highest speed running.