Related Manuals for Comet T8148
Summary of Contents for Comet T8148
- Page 1 T8148 Programmable indoor transmitter of temperature and CO concentration with 4-20 mA output T8248 Programmable indoor transmitter of temperature and CO concentration with 0-10 V output Instruction Manual...
-
Page 2: General Description
The transmitters are designed for online measurement of carbon dioxide concentration and temperature of air in a building interiors. device type construction type output 4 – 20 mA T8148 ambient air ambient air 0 - 10 V T8248 Principle of CO concentration measurement is based on Non-Dispersive Infrared Technology (NDIR). -
Page 3: Device Setting From The Manufacturer
Device setting from the manufacturer output 1: T8148 - range 4 to 20 mA corresponds 0 to 2000 ppm T8248 - range 0 to 10 V corresponds 0 to 2000 ppm T8148 - range 4 to 20 mA corresponds 0 to 50ºC output 2: T8248 - range 0 to 10 V corresponds 0 to 50ºC... - Page 4 Device demounting If there is necessary demount the device, insert flat bladed screwdriver max. 3.5 mm wide from top side into middle device’s air hole. There is fastening member placed, insert screwdriver beyond the fastening member about 2 cm deep. Then slightly move screwdriver in arrow direction, it unlock fastening member and the device is partially opened.
-
Page 5: Typical Application Wiring
(button is placed behind small hole - see picture). For button pressing use thin instrument, for example paper clip. T8148 T8248 Upper line of the LCD display shows value of CO2 concentration corresponding to output current 4mA (output voltage 0V). -
Page 6: Error States Of The Device
T8148 T8248 Press the button again to get value of temperature corresponding to output current 4mA (output voltage 0V). T8148 T8248 After next pressing of the button LCD shows value of temperature corresponding to output current 20mA (output voltage 10V). -
Page 7: Technical Parameters
This error message is displayed also in case, when the device is connected to the PC via the optional SP003 communication cable and external power supply is not used. Technical parameters T8148 – temperature and CO concentration transmitter Output: 4 to 20 mA... -
Page 8: End Of Operation
Temperature: ± 0,5 °C Accuracy: 0 to +50 ºC Range: 0,1 °C Resolution: Response time: t90 < 12 min (air flow approximately 0,3 m/s) t90 < 25 min (no air flow) Concentration of CO ± (50 ppm + 2 % of measuring value) at 25°C (77°F) and 1013 hPa Accuracy: Range: 0 to 2000 ppm...
Need help?
Do you have a question about the T8148 and is the answer not in the manual?
Questions and answers