2
IE-COM-C3121P-1
Manual for use of thermometer-hygrometer COMMETER C3121P
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.
The sensing element of the device is an external probe (see
picture) designed for compressed air measurement up to 25 bars. The
probe has a cable (length of 1 to 4 meters) with connector.
Mechanical connection of the probe is threaded G1/2 with O-ring
seal. . It is good to mount probe directly into high pressure area (i.e.
air pressured pipe) if it is possible. There is other possibility to
use flow chamber SH-PP, see Appendix A.
The probe is an noninterchangeable part of the device.
Before you remove probe, make sure that the pressure in a pressure chamber (duct, pipe…)
and the ambient pressure are in equilibrium!
Read instruction manual before the first device connection, please.
Technical parameters:
Parameters of measurement:
Temperature: Range of measurement: -30 to +105 °C
Resolution: 0.1 °C
Accuracy: ±0.4 °C
Humidity:
Range measurement: 0 to 100 %RH
Resolution: 0.1 %RH
Accuracy: ±2.5 % RH at the range of 5 to 95 %RH
Measuring temperature and humidity range is limited in accordance with the graph.
