Instruction Manual

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Dokument

UMA 146

Rev

Page

1 (7)

User manual

CF8-W-Disp-GH

/ temperature transmitter with relay

for use in greenhouses

General

The IAQ-sensor product CF8-W-Disp-GH is used to measure indoor air carbon

dioxide concentration and temperature in greenhouses. It is flexible controller with

programmable output for relay control of e.g. carbonizers.

The unit is designed for connecting to Direct Digital Control (DDC). The linear output

functions are pre-programmed as CO

and temperature transmitters with jumper

selected outputs 0-10 V / 2-10 V / 0-20 mA / 4-20 mA. The measuring ranges can be

modified from a PC (Windows) and use of the software UIP (version 4.3 or higher)

together with the communication cable RS232 CABLE.

Summary of content (7 pages)

PAGE 1
User manual CF8-W-Disp-GH CO2 / temperature transmitter with relay for use in greenhouses General The IAQ-sensor product CF8-W-Disp-GH is used to measure indoor air carbon dioxide concentration and temperature in greenhouses. It is flexible controller with programmable output for relay control of e.g. carbonizers. The unit is designed for connecting to Direct Digital Control (DDC).
PAGE 2
Function Description This part describes the function of the standard configuration of CF8-W-Disp-GH. It may be re-programmed before or after the installation by a PC and the standard UIP software (version 4.3 or higher). Out(1) = measuring signal of carbon dioxide concentration Out(2) = measuring signal of temperature Out(3) = ON/OFF signal of demand of air quality The opening of the relay is controlled by the hysteresis of the relay. See figure 4. Figure 2. The measuring signal of carbon dioxide.
PAGE 3
Terminal Default Output Default Output Range Outputs of this sensor Output Range of this sensor Out(1) 0-10VDC 0-2000 ppm CO2 0-10VDC 0-4 % CO2 Out(2) 0-10VDC 0-50 oC Relay Closed > 1000 ppm CO2 > 2,0 % CO2 Open < 900 ppm CO2 < 1,9 % CO2 Table I.
PAGE 4
Jumper Start point selection jumper Communication selection jumper Position Function 0% Jumper top position provides 0Vdc or 0mA start point for OUT1, OUT2 (0-20mA or 0-10V). 20% Jumper bottom position provides 2Vdc or 4mA start point for OUT1, OUT2 (4-20mA or 2-10V). MB Jumper top position provides Modbus communication protocol SA Jumper bottom position provides SenseAir communication protocol Current Connection in position “Current” provides 0/4-20mA output range for OUT1.
PAGE 5
Error code and action plan Bit # 0 Error Error description code N/A Fatal Error 1 2 Reserved 2 4 Algorithm Error. Indicate wrong EEPROM configuration. 3 8 Output Error Detected errors during output signals calculation and generation. 4 16 5 32 Self-Diagnostic Error. May indicate the need of zero calibration or sensor replacement. Out of Range Error Accompanies most of other errors. Can also indicate overload or failures of sensors and inputs.
PAGE 6
Maintenance The CF8-W-Disp-GH is basically maintenance free. An internal self-adjusting calibration function takes care of normal long term drift associated to the CO2 sensor. To secure the highest accuracy, a time interval of five years is recommended between CO2 calibrations, unless some special situations have occurred. A zero calibration can be performed by use of pure nitrogen or air that has passed through a chemical absorber and a PC together with the UIP software version 4.3 (or higher).
PAGE 7
+ ~ This product is in accordance with the EMC 2004/108/EC, 92/31/EEG including amendments by the CE-marking Directive 93/68/EEC The product fulfils the following demands: EN 61000-4-2 level 2, EN 61000-4-3 level 2, EN 61000-4-4 level 4, EN 61000-4-6, EN 61000-4-8 level 4, EN 55022 class B Dokument UMA 146 Rev 1 Page 7 (7)