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IE-SNC-T81(2)xx-01 

 

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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  

output 2: 

 

T8148 - range 4 to 20 mA corresponds 0 to 50ºC  

   

 

 

T8248 - range 0 to 10 V corresponds 0 to 50ºC 

measurement mode: 

SLOW  

display:

  

 

switched on 

LED indication:

 

up to 1000 ppm lights green LED, between 1000 and 1200 ppm lights 
yellow LED and over 1200 ppm lights red LED 

altitude: 

300 m above see level at the installation site 

 

Modification of the setting is possible to do by means of the PC and TSensor program.

 

 

 

Installation of the transmitter 

Devices  are  designed  for  indoor  applications.  It  is  recommended  to  mount  them  on  universal 

wiring box (common installation box KU68) with using two enclosed mounting screws. For correct 
function there is necessary to find proper device place. It shouldn’t be placed at places where it can 
be  affected  by  sunshine,  near  radiators,  heating  elements  and  other  heat  sources,  air  handlers, 
windows,  doors,  into  racks  and  shelves  and  similar  places.  For  buildings  with  less  thermal 
insulation  there  is  not  suitable  to  place  them  on  external  walls  of  building.  If  there  are 
communication  conductors  placed  into  conduit,  there  is  strongly  recommended  make  it  caulk,  to 
restrict air flow around device. 

For transmitter connection it is recommended to use a shielded cable. Maximum cable lenght of 

the current loop is 1200 m, maximum voltage output cable lenght is 15 m. The cable should not be 
led in parallel along power cabling. Safety distance is up to 0.5 m otherwise undesirable induction 
of interference signals can appear. 

Firstly mount the rear part of the device on the wiring box with two screws. Connect cables to 

terminals (terminals are self-clamping and can be opened by a suitable screwdriver). By jumpers J1 
and  J2  select  galvanically  or  non-galvanically  isolated  current  output  (T8148),  see  „Typical 
application wiring”. Finish the installation by inserting the front part of the unit.  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Installation and electrical wiring should be performed by qualified personal only. 

 
 
 

Summary of Contents for T8148

Page 1: ...48 Programmable indoor transmitter of temperature and CO2 concentration with 4 20mA output T8248 Programmable indoor transmitter of temperature and CO2 concentration with 0 10V output Instruction Manu...

Page 2: ...rary in FAST mode no software filter is used for calculating the output value This fact adds a noise of typ 30ppm which has to be considered in terms of accuracy Of principle measurement is the measur...

Page 3: ...s heating elements and other heat sources air handlers windows doors into racks and shelves and similar places For buildings with less thermal insulation there is not suitable to place them on externa...

Page 4: ...t 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 Remove the screwdriver and tak...

Page 5: ...utput range settings can be verified without a use of the computer by pressing the button on the left side of the device button is placed behind small hole see picture For button pressing use thin ins...

Page 6: ...ation cable to the PC Installed USB driver detect connected cable and create virtual COM port inside the PC Unscrew four screws of the device lid a remove the lid If device is already installed to mea...

Page 7: ...se 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 CO2 concentration transmitter Outp...

Page 8: ...C Operating humidity range 5 to 95 RH no condensation Operating pressure range 850 to 1100 hPa Recommended interval of calibration 5 year CO2 2 years temperature Protection IP20 EMC EN 61326 1 EN 5501...

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