Comet P3116 Instruction manual
ie-snc-P3116-01 1
Economy humidity and temperature transmitter
QUICK START MANUAL
P3116
DESCRIPTION
The P3116 transmitter with 4-20 mA current outputs is designed to measure
temperature and relative humidity of air using the external probe that is part of
the device. The probe is interchangeable without calibration to a specific device
and regardless of the length of the cable.
The transmitter communicates by two galvanically separated current loops.
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.
DEVICE PRODUCT INSTALATION
Devices are designed for wall mounting. There are two mounting holes at the
sides of the case. The transmitter fasten in any position, the recommended
probe 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 (see figure). 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).
2ie-snc-P3116-01
The loop resistance value Rc = Rm + resistance of wires must fulfill
the condition Rc[Ω] < 40 x Uss[V] – 360.
The external probe cable can be disconnected and reconnected or replaced.
The connection terminal block is accessible after removing the lid (see figure).
Devices don´t require special operation and maintenance. It is recommended
periodically to verify the accuracy of measurement.
DIMENSIONS
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WARNING
•Don´t operate the probe of the device in an environment in a state of
condensation or in an environment of water aerosol for a long time.
•Don´t use and don’t store the device probe 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.
MEASURED VALUES
Temperature:
Measuring range: -20 to +80 °C
Accuracy: ±0.4 °C
Resolution: 0.1 °C
Response time: t90 < 15 min (temperature step 20 ºC)
Relative humidity:
Measuring range: 0 to 100 %RH (no condensation)
Accuracy: ±1.8 %RH from 0 to 90 %RH at 23 °C
Resolution: 0.1 %RH
Temperature error: 0.05 % RH/°C (0 °C to +60 °C)
Response time: t90 < 9 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
Protection: transmitter –IP65
external probe –IP40
Working position: transmitter –any position
external probe –any position
4ie-snc-P3116-01
Storage temperature range: -20 to +80 °C
Storage humidity range: 5 to 95 %RH (no condensation)
Electromagnetic
compatibility: EN 61326-1
Weight: 190 g (1 meter cable), 220 g (2 m), 310 g (5 m)
Housing material: transmitter –ASA, external probe –ABS
OPERATING CONDITIONS
Temperature operating range: transmitter -30 to +80 ºC
external probe -20 to +80 ºC
Relative humidity operating range: transmitter 0 to 100 %RH
external probe 5 to 85 %RH *
* for continuous operation
CALCULATION OF THE MEASURED VALUES
Temperature: T[°C] = 6.25 x I[mA] –45
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.
©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.
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