COMET P3116 Economy Humidity and Temperature Transmitter User Manual

COMET P3116 Economy Humidity and Temperature Transmitter

Product Information

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.
Dimensions|
Weight| 190 g (1 meter cable), 220 g (2 m), 310 g (5 m)
Operating Conditions| Temperature operating range: 0 to 100°C
Relative humidity operating range: transmitter 5 to 85%RH, external
probe 5 to 85%RH*
Power Supply Voltage| 9 to 30 Vdc
Current Output in Case of Error| < 3.8 mA or > 22 mA
Recommended Calibration Interval| Not specified
Protection| Not specified
Storage Humidity Range| 5 to 95%RH (no condensation)
Electromagnetic Compatibility| EN 61326-1
Housing Material| Not specified

Product Usage Instructions

1. Device Product Installation:
   • The device is designed for wall mounting.
   • There are two mounting holes at the sides of the case.
   • The transmitter can be fastened in any position, but the recommended probe working position is with sensor cover downwards.
   • To access the connecting terminals, unscrew the four screws in the corners of the case and remove the lid.
   • Pass the connecting cable through the released gland.
   • Connect the wires to the terminals (for device connection, it is recommended to use a shielded cable with a maximum length of 1200m and with an external diameter of 4 to 8 mm).
   • Tighten the gland and screw the lid, ensuring the integrity of the seal.
2. Calculation of the Measured Values:
   • Temperature: No specific calculation mentioned.
   • Relative Humidity: No specific calculation mentioned.
3. End of Operation:
   • Disconnect the device and dispose of it according to current legislation for dealing with electronic equipment.
4. Technical Support and Service:
   • Technical support and service are provided by the distributor.
     Refer to the warranty certificate for contact information.

COMET SYSTEM, Ltd. reserves the right to make technical changes
to the device without previous notice. Misprints reserved.

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).

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

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
• 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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