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IE-COM-C3121-12

 

 

General description 

 

Instrument is designed for measurement of temperature and relative humidity with an external 
probe on a cable with the possibility of displaying the dew point temperature. Measured values 
are  displayed  on  a  dual  line  LCD  display.  Temperature  is  measured  by  RTD  sensor 
Ni1000/6180ppm.  Instrument  compares  measured  values  of  temperature,  humidity  and  dew 
point  with  two  adjustable  levels  for  each  measured  quantity.  Breaking  the  level  is  indicated 
by blinking  the  proper  value  on  display  and  by  audio  indication  (switchable).  Instrument  is 
equipped  with  minimum  and  maximum  memory  and  Hold  function.  Minimum  and  maximum 
values and Hold value are possible to display on the LCD anytime. 

 

 

 

 

Summary of Contents for Commeter C3121

Page 1: ...www cometsystem com Instruction manual Commeter C3121 Digital thermometer hygrometer with external probe...

Page 2: ...onditions 6 Dimensions 7 OPERATION OF THE DEVICE 8 Switching ON and OFF the device 8 Displaying of actual measured values 8 Function HOLD storing of actual measured values and minimum a maximum memory...

Page 3: ...D display Temperature is measured by RTD sensor Ni1000 6180ppm Instrument compares measured values of temperature humidity and dew point with two adjustable levels for each measured quantity Breaking...

Page 4: ...approximately 1m s temperature step 20 C Relative humidity Measuring range 0 to 100 RH Resolution 0 1 RH Accuracy 2 5 RH from 5 to 95 RH at 23 C Response time t90 1 min with plastic sensor cover witho...

Page 5: ...refreshed in interval up to 5 s in case measured values remain stable Refresh interval is shortened to approximately 0 7 s only if measured values change Current consumption in this mode in usual oper...

Page 6: ...perating range 5 to 95 RH no condensation device 0 to 100 RH probe Temperature and rel humidity restriction The measuring range of the external probe is limited in accordance with the graph and must n...

Page 7: ...IE COM C3121 12 7 Dimensions...

Page 8: ...the measurement mode and actual measured values are displayed If instrument is ON do not disconnect or connect the probe to prevent storing of incorrect value to minimum and maximum memory Displaying...

Page 9: ...isplay minimum resp maximum value of other values Pressing MIN MAX or MENU key again to return to default mode Minimum and maximum memory is cleared from menu after confirmation selection CLR see belo...

Page 10: ...FAST mode refreshment is fastest with regular interval approximately 0 7 s In the dynamic refresh mode DYN each 15 s refresh interval of display is doubled to maximum 5 s if measured values are stable...

Page 11: ...of the arrow keys Press and hold the arrow key UP to make value increase fast Press and hold the arrow key DOWN to make value decrease fast Release the arrow key and press ENTER to confirm new limit R...

Page 12: ...f d REF and AUDI from menu selections and data in memory HOLD MIN and MAX will be lost For the same reason do not disconnect the battery for longer than 1 minute even if instrument is switched OFF If...

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