E2618 series transmitters belong to the PluraSens® family of multifunctional
measurement instruments. The instruments utilise gas sensors of various types with
excellent repeatability, stability and long lifetime
E2618 series provides two independent analog outputs OUT1 and OUT2, user-
selectable to 4-20 mA or 0-10 V, proportional either to gas concentration or temperature.
RS485 Modbus RTU digital communication interface allows easy instrument
configuration and integration into various automation systems.
A design with LCD indicator is available as an option.
The version of your transmitter is marked on the package.
If symbol
is marked on the equipment, consult the documentation for further
information.
Safety requirements
Misuse will impair the protection of the equipment.
Always adhere to the safety provisions applicable in the country of use.
Do not perform any maintenance operation with the power on. Do not let water or
foreign objects inside the device.
External circuits connected to the equipment should have sufficient insulation rating
according to the environmental conditions and equipment power
A disconnecting device that is marked as such and easily accessible should be
included in the installation of this product.
Operating conditions
The device should be used in explosion-safe indoor areas, without aggressive gases in
the atmosphere. See Specification table for more details.
Installation and connections
Before proceeding with the installation it is mandatory to read carefully the Safety
requirements section and make sure to comply with all listed instructions. During the
installation of the detector the following points must be considered:
application (air quality control or leakage detection),
properties of the space under investigation (room geometry, direction and velocity of
air flows etc),
detected gas (relative density to air, temperature, whether the gas is flammable, or
toxiс, or oxygen displacing),
avoid strong vibrations, mechanical shock, and the sources of strong electromagnetic
interference,
the device should be accessible for maintenance and repair.
For early leakage detection install the sensor as close as possible to the potential
leakage sources (flanges, valves, pressure reducers, pumps, etc), taking into
consideration other points listed above. For general area monitoring without definite
leakage sources, the detectors should be distributed evenly in the room. For personal
safety control the detectors are installed in the breathing zone (at the height of the head
of people or animals). Recommended sensor position is vertical, pointing downwards.
See Installation guidelines section on the next page for more information.
1. Wall mount version: Unscrew four lid screws and detach the lid from the transmitter.
Attach the device to a wall with screws passing through mounting holes (for dimensions
see the antecedent drawing). Duct mount version: Cut hole with a diameter of 36...45
mm in the air duct at the chosen mounting place. Place the rubber flange aligning the
holes in the flange and the air-duct and fix the flange with four self-tapping screws. Pass
the sensor probe through the flange and adjust it to the appropriate depth. Unscrew four
lid screws and detach the lid from the transmitter.
2. Use M16 cable gland to let in cables of the power supply and of the external devices.
Attach the power cable to the device without turning it on. Using the connection
diagram below, connect the analog outputs and digital interface terminals to the
relevant devices according to your tasks.
The screwless quick connect spring terminals on the E2618 series devices are
suitable for a wide range of wires with cross-section 0,2...1,5 mm
2
. We recommend
to strip the wire end by 8...9 mm and to use the wire end sleeves.
To connect the wire, insert the wire end into terminal hole. To disconnect, push the
spring loaded terminal lever, pull the wire out, and release the lever.
Use twisted pair cable, e.g. LiYY TP 2×2×0,5 mm
2
or CAT 5, to connect the device
to RS485 network. Use one pair for A and B wires and the second pair for common
0 V and power +U wires to connect the transmitter to Fieldbus network. Respect
polarity. Overall length of all connections via RS485 interface should not exceed
1200 m. The type of each analog output can be independently changed between 4-
20 mA and 0-10 V with jumpers J1 (OUT1) and J2 (OUT2).
With closed jumper the output is 0-10 V, with open jumper the output is 4-20 mA.
Power restart is required after changing the position of the jumpers.
The output assignments and scales can be changed by Modbus commands (see
Annex 1 for more information).
By default both outputs OUT1 and OUT2 are assigned to gas concentration. The
device has built-in temperature sensor which may be tied to any of the outputs.
NOTE The built-in temperature sensor is intended for temperature
compensation. E2618 series devices are not meant for ambient air temperature
measurement.
We recommend to set the difference between the upper and bottom limits of the
output scale not narrower than 20% of detection range (for CO detectors the scales
down to 5% of range are allowed). In any case, do not set the output scale below
the tenfold resolution of the device.
NOTE If you use a version with LCD, only OUT1 is available.
3. Turn on the power. The sensor heating up takes ca. 60 seconds after switching on.
During this period analog outputs and Modbus interface are off. The operating status is
indicated by the LED on the PCB of the device. The LED response to different
processes is presented in the following table .
Process
LED mode
Sensor absence or malfunction
Blinking 0.5 Hz (90% off, 10% on)
Modbus response
The signal is modulated with short on-off pulses,
even single Modbus cycle is traceable*
Normal operating
Continuous light
4. Make sure that the transmitter is properly mounted, the external devices connected,
power on and control LED is constantly lit. Place the lid back and fix it with the screws.
The device is ready to use.
Sensor probe handling
The wall mount version of the transmitter is available with remote probe (see drawing
below for dimensions). The remote probe is connected to the main unit with shielded
cable. Default connection cable length is 3 m
The sensor probes of all types are equipped with a hydrophobic microporous PTFE filter
to protect the sensor from dust, dirt and water drops. The filter may be replaced if it gets
strongly contaminated. To replace the PTFE filter, unscrew the M25 nut and remove
the old filter. Place a new filter into the nut and tighten it again.
NOTE Never stab or press the filter near its centre where the sensor is located since
this may damage the sensor.
The recommended orientation of sensor probe is vertical with the sensor tip pointing
downwards. This prevents possible accumulation of condensed water on the sensor
protection filter. The horizontal orientation is also suitable. Avoid upward position of the
sensor tip.
Configuring
Gas transmitters E2618 share all functionalities of the PluraSens
®
multifunctional
transmitter platform. The features and options include:
- digital output change rate limiting filter
- digital integrating (averaging) filter
- temperature measurement channel with internal sensor
- free assignment of each analog output to chosen parameter
- flexible setting of analog output scales for each output
- output shift and slope adjustment for calibration
A standard configuration kit includes a USB-RS485 converter and a software pack.
Please contact your Seller for more information.
Return to default settings
To reset the device’s Slave ID, baudrate and sbit number to factory settings, proceed as
follows:
1. De-energize the device
2. Connect the J3 jumper
3. Turn on the device
4. De-energize the device
5. Disconnect the J3 jumper
6. Turn on the device
RS485 communication interface
See Annex 1
