P3110E Economy Humidity and Temperature Transmitter
Product Description
The P3110E transmitter is designed to measure air temperature
and relative humidity in chemically non-aggressive environments. It
has 4-20 mA outputs and communicates using two galvanically
separated current loop 4-20mA. The device requires power from an
evaluation device, and it is always necessary to connect loop I1,
which supplies power to the measurement part of the device.
Device Installation
The device is designed for wall mounting, and it has two
mounting holes at the sides of the case. The working position is
with the sensor cover downwards. After unscrewing the four screws
in the corners of the case and removing the lid, the connecting
terminals are accessible. Pass the connecting cable through the
released gland and connect the wires to terminals (for device
connection, use a shielded cable with a maximum length of 1200m and
an external diameter of 4 to 8 mm). Finally, tighten the gland and
screw the lid (check the integrity of the seal).
It is not recommended to use the device for a long time under
condensation conditions or water aerosol conditions. It could cause
water steam condensation inside the sensor’s cover, resulting in an
increase of response time to humidity changes and potential sensor
damage.
Operating Conditions
The temperature operating range is not specified, but the
relative humidity operating range is 5 to 95%RH (no
condensation).
Measured Values
- Temperature: Accuracy: N/A; Measuring range: N/A; Resolution:
N/A; Response time: N/A - Relative humidity: Accuracy: N/A; Measuring range: N/A;
Resolution: N/A; Temperature error: N/A; Response time: N/A
General Information
- 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 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
End of Operation
Disconnect the device and dispose it according to current
legislation for dealing with electronic equipment.
Technical Support and Service
Technical support and service are provided by the distributor.
For contact information, see the warranty certificate. If needed,
you can also use the discussion forum at
http://www.forum.cometsystem.cz/.
It is prohibited to copy and make any changes in this manual
without explicit agreement from the company COMET SYSTEM, Ltd. All
rights reserved. COMET SYSTEM, Ltd. makes constant development and
improvement of their products. The manufacturer reserves the right
to make technical changes to the device without previous notice.
Misprints reserved.
Product Usage Instructions
- Mount the device on a wall with the sensor cover downwards
using the two mounting holes at the sides of the case. - Unscrew the four screws in the corners of the case and remove
the lid to access the connecting terminals. - Pass the connecting cable through the released gland and
connect the wires to the terminals using a shielded cable with a
maximum length of 1200m and an external diameter of 4 to 8 mm. - Tighten the gland and screw the lid, checking the integrity of
the seal. - Connect loop I1, which supplies power to the measurement part
of the device. - Avoid using the device for long periods under condensation
conditions or water aerosol conditions to prevent water steam
condensation inside the sensor’s cover, resulting in an increase of
response time to humidity changes and potential sensor damage. - Disconnect the device and dispose of it according to current
legislation for dealing with electronic equipment when it is no
longer needed.
P3110E
Economy humidity and temperature transmitter
www.cometsystem.com
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[] < 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.
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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
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MEASURED VALUES
Temperature: Accuracy: Measuring range: Resolution: Response time:
Relative humidity: Accuracy: Measuring range: Resolution: Temperature error: Response time:
±0.6 °C -30 to +80 °C 0.1 °C t90 < 7 min (temperature step 20 ºC)
±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
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OPERATING CONDITIONS
Temperature operating range: Relative humidity operating range:
-30 to +80 ºC 0 to 100 %RH
CALCULATION OF THE MEASURED VALUES
Temperature: Relative humidity:
T[°C] = 6.875 x I[mA] 57,5 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.
4
ie-snc-p3110e-04
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