COMET P3110E Economy Humidity and Temperature Transmitter User Guide
- October 30, 2023
- COMET
Table of Contents
P3110E
Economy humidity and temperature transmitter
PRODUCT DESCRIPTION
The transmitter P3110E with 4-20 mA outputs is designed to measure air
temperature and relative humidity in chemically non-aggressive environments.
The transmitter communicates by two galvanically separated current loop
4-20mA. Each loop has two-wire connection and each loop requires power from
evaluation device. It is always necessary to connect loop I1, which supplies
power to measurement part of the device.
Devices P3110EZ are non-standard versions of the transmitter. Description is
not included in this manual.
DEVICE INSTALATION
Devices are designed for wall mounting. There are two mounting holes at the
sides of the case. Working position is with sensor cover downwards.
The connecting terminals are accessible after unscrewing the four screws in
the corners of the case and removing the lid. Pass the connecting cable
through released gland and connect the wires to terminals (for device
connection it is recommended to use a shielded cable with maximum length of
1200m and with external diameter of 4 to 8 mm). Finally tighten the gland and
screw the lid (check the integrity of the seal).
The loop resistance value Rc = Rm + resistance of wires shall fulfill the
condition Rc[Ω] < 40 x Uss[V] – 360.
It is not recommended to use the device for long time under condensation
conditions or water aerosol conditions. It could be the cause of water steam
condensation inside the sensor’s cover with a consequential increase of
response time to humidity changes. It can cause sensor damage too.
Devices don´t require special operation and maintenance. It is recommended
keep the sensor cover clean and periodically to verify the accuracy of
measurement.
WARNING
- Don´t use and don’t store the device without a sensor cover.
- Don´t connect transmitter while power supply voltage is on.
- The cables should be located as far as possible from potential interference sources.
- Installation, commissioning and maintenance may only be carried out by personnel with qualification by applicable regulations and standards.
DIMENSIONS
MEASURED VALUES
Temperature:
Accuracy:
Measuring range:
Resolution:
Response time:| ±0.6 °C
-30 to +80 °C
0.1 °C
t90 < 7 min (temperature step 20 ºC)
---|---
Relative humidity:
Accuracy:
Measuring range:
Resolution:
Temperature error:
Response time:| ±3.0 %RH from 5 to 95 %RH at 23 °C
0 to 100 %RH
0.1 %RH
0.05 % RH/°C (0 °C to +60 °C)
t90 < 30 s (humidity step 65 %RH, constant
temperature)
GENERAL
| Power supply voltage: | 9 to 30 Vdc |
|---|---|
| Current output in case of error: | < 3.8 mA or > 22 mA |
| Recommended calibration interval: | 1 year (relative humidity 1 year, |
temperature 2 years)
Protection:| housing with electronics IP65, sensors are located in cover with
IP40 protection
Storage temperature range:| -30 to +80 °C
Storage humidity range:| 5 to 95 %RH (no condensation)
Working position:| cable gland upwards
Electromagnetic compatibility:| EN 61326-1
Weight:| approximately 150 g
Housing material:| ASA
OPERATING CONDITIONS
| Temperature operating range: | -30 to +80 ºC |
|---|---|
| Relative humidity operating range: | 0 to 100 %RH |
CALCULATION OF THE MEASURED VALUES
| Temperature: | T[°C] = 6.875 x I[mA] – 57,5 |
|---|---|
| Relative humidity: | RH[%RH] = 6.25 x I[mA] – 25 |
END OF OPEATION
Disconnect the device and dispose it according to current legislation for
dealing with electronic equipment.
TECHNICAL SUPPORT AND SERVICE
Technical support and service is provided by distributor. For contact see
warranty certificate. If needed, you can also use the discussion forum at
http://www.forum.cometsystem.cz/.
© Copyright: COMET SYSTEM, s.r.o., Bezrucova 2901, 756 61 Roznov pod
Radhostem, Czech Republic It is prohibited to copy and make any changes in
this manual, without explicit agreement of company COMET SYSTEM, Ltd. All
rights reserved.
COMET SYSTEM, Ltd. makes constant development and improvement of their
products. Manufacturer reserves the right to make technical changes to the
device without previous notice. Misprints reserved.
Documents / Resources
|
COMET P3110E Economy Humidity and Temperature
Transmitter
[pdf] User Guide
P3110E Economy Humidity and Temperature Transmitter, P3110E, Economy Humidity
and Temperature Transmitter, Humidity and Temperature Transmitter, Temperature
Transmitter, Transmitter
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