Comet P3116 Manuale utente
ie-snc-P3116-02 1
Economy humidity and temperature transmitter
INSTRUCTION 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 the need for calibration with a
specific device and regardless of the probe cable length (the device
automatically reads the current calibration data from the connected probe).
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 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 current loops
connection use a shielded cable with maximum length of 1200m and with
external diameter of 4 to 8 mm. The cable shield connect to the appropriate
terminal of the device. Finally tighten the gland and screw the lid (check
the integrity of the seal).
2ie-snc-P3116-02
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. Work
carefully, the wires must not be interchanged (see figure)!
Devices don´t require special operation and maintenance. It is recommended
periodically to verify the accuracy of measurement.
DIMENSIONS
ie-snc-P3116-02 3
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, air flow
1m/s) *
Relative humidity:
Measuring range: 0 to 100 %RH
Accuracy: ±1.8 %RH from 0 to 90 %RH at 23 °C
Hysteresis: < ±1 %RH
Linearity error: < ±1 %RH
Resolution: 0.1 %RH
Temperature error: 0.05 % RH/°C (0 °C to +60 °C)
Response time: t90 < 9 s (step 65 %RH, constant temperature) *
* data valid for DIGIL/E probe supplied with transmitter, for the DIGIS/E
and DIGIH/E probes see the instruction manuals
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
4ie-snc-P3116-02
Working position: transmitter –any position
probe –any position (see “DEVICE INSTALLATION”)
Storage temperature range: -20 to +80 °C
Storage humidity range: 0 to 100 %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
body of probe - PET (Ertalyte)
filtering cover - PC
OPERATING CONDITIONS
Temperature range: transmitter -30 to +80 ºC
external probe -20 to +80 ºC
Relative humidity range: transmitter 0 to 100 %RH (no condensation)
external probe 5 to 85 %RH (in 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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