Evikon PluraSens E2618 Series User manual

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.
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 areas. Avoid strong mechanical shock,
vibrations or EMI. Avoid corrosive atmosphere and areas highly contaminated with dust,
oil mist etc. Keep the device away from direct sunlight.
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 transmitter 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 mm2. 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 mm2or CAT 5, to connect the device
to RS485 network. Respect polarity.
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.
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

Nitrogen dioxide
Colourless toxic gas, relatively insoluble in water. When exposed to oxygen
(including air), nitric oxide is converted into nitrogen dioxide.
Chemical formula
NO2
Molar weight
46
Relative gas density (to air)
1.59
Conversion
1 ppm = 1.88 mg/m3
Boiling point
21.2 °C
Flammability
Powerful oxidizer, can cause many
organic substances (wood, paper, oil
etc) to ignite.
Irritates the skin, eyes and respiratory
tract. Exposure to levels above 100
ppm can cause death due to
asphyxiation from fluid in the lungs.
There are often no symptoms at the
time of exposure other than transient
cough, fatigue or nausea, but over
hours inflammation in the lungs causes
edema.
Odour
Characteristic pungent odour
Odour threshold
0.1 to 0.4 ppm
Hazards
Irritates respiratory tract and eyes, at
high concentrations may cause lung
edema and death.
Exposure limits
(NIOSH)
ST REL
1.88 mg/m3/ 1 ppm
IDLH
37.6 mg/m3/20 ppm
Conversion of ppm to mg/m3is calculated for 25°C and 1 atm.
Installation guidelines
(See Installation and connections section for general information.)
Nitrogen dioxide is ca. 1.6 times heavier than air. The location of the sensor is
determined by operating conditions. Thus, in underground parkings the NO2 raises to
the ceiling with hot exhaustion gases, so the sensor should be located at 1.2...1.5 m
from the floor in order to detect potentially dangerous concentration more quickly.
Calibration
E2618-NO2 transmitters have been calibrated by Manufacturer with standard gas
mixtures before delivery. Provided that the sensor is used under moderate
conditions,the recommended interval for field recalibration is 6 months. Please
contact your dealer for more information.
Maintenance
Do not perform any maintenance operation with the power on.
Clean the device with soft damp cloth. Do not use any abrasive cleaning agents. Do
not immerse the device into water or any cleaning media.
Delivery set
–Transmitter E2618 (wall mount or duct mount version)
–Mounting accessories:
4 screws with plastic dowels for wall mount version
rubber flange for duct mount version.
fixing clamp for remote probe version
E2618-NO2_UM_EN Rev 20.05.2020
Specifications
Sensor type
electrochemical cell
Sampling method
diffusion
Typical detection range
0...20 ppm
0...200 ppm
Maximum overload
100 ppm
1000 ppm
Resolution / digital unit
0.1 ppm
1 ppm
Response time T90
< 60 s
<40 s
Operating conditions
-30...50 °C
-20...50 °C
15...90% RH non-condensing, 0,9...1,1 atm
explosion safe areas, non-aggressive atmosphere
NOTE The sensor may
exhibit considerable
sensitivity to chlorine
NOTE The sensor may
exhibit considerable
sensitivity to Cl2, H2S, SO2, O3
Sensor lifetime
> 24 months
Calibration interval
6 months
Signal update
every 1 second
Load resistance
RL< (Us - 2 V) / 22 mA for 4-20 mA
RL > 250 kOhm for 0-10 V mode
Digital interface
RS485, Modbus RTU protocol
no galvanic isolation
Power supply options
11...30 VDC or 24 VAC,
Power consumption
< 2 VA
Analog outputs
2 × 4-20 mA / 0-10 V, user settable
Outputs assignment
OUT1 2 gas; OUT2 2 gas
NOTE For LCD version only OUT1 is available.
Cable connections
screwless spring loaded terminals
Enclosure
grey ABS, wallor duct mount, protection class IP65
Dimensions
H82 × W80 × D55 mm
CE marking
according to 2014/30/EU and EN61326-1 requirements
LCD option
Operating temperature
0...+50 °C
Display dimensions
72 × 36 mm
Number of digits
3.5 7-segment
Character height
14 mm
Other features
Backlight
Other options
Remote probe
Protection IP65, default cable length 3.0 m;
max height 80 mm, max diameter 65 mm
Warranty
This product is warranted to be free from defects in material and workmanship for a
period of one year from the date of original sale. During this warranty period
Manufacturer will, at its option, either repair or replace product that proves to be
defective. This warranty is void if the product has been operated in conditions outside
ranges specified by Manufacturer or damaged by customer error or negligence or if
there has been an unauthorised modification.
Evikon MCI OÜ Teaduspargi 7/9, Tartu [email protected]
Tel. [phone] Estonia www.evikon.eu
PluraSens®
Nitrogen Dioxide Transmitter
E2618-NO2
User Manual

E2618_UM_EN Annex 1. Modbus RTU Communication Reference
RS485 communication interface
Databits: 8
Parity: none / odd / even
Stop bits: 1 or 2
Protocol: Modbus RTU
Supported Modbus functions:
03 –read multiple registers
06 –write single register
Communication parameters
Parameter
Permitted values
Default
Supported
baudrates
1200, 2400, 4800, 9600, 19200,
38400, 57600
9600
Data bits
8
8
Parity
none / odd / even
none
Stop bits
1, 2
1
Protocol
Modbus RTU
Modbus functions
03 - read multiple registers
06 - write single register
Error codes
01 –illegal function
02 –illegal data address
03 –illegal data value
04 –slave device failure (details of last error 04
can be read from register 0x0008)
Modbus holding registers
Register addresses are shown 0-based, Addr in hexadecimal, Reg in decimal format.
Modbus holding register numbers MHR are shown in decimal 1-based format, and may be addressed either from 00001 or 40001 base.
Addr
Reg / MHR
RW
Description
Supported values (dec)
Default
0x0001
1 / 40002
R
Hardware version
-
0x0002
2 / 40003
R
Software version
-
0x0003
3 / 40004
R
Product serial number
1...65535
-
0x0004
4 / 40005
RW
Slave ID (net address) *
1...247 **
1
0x0005
5 / 40006
RW
Baudrate *
1200, 2400, 4800, 9600, 19200, 38400, 57600
9600
0x0006
6 / 40007
RW
Response delay, ms
1...255
10
0x0007
7 / 40008
RW
Stop bits, parity bit *
1 –no parity bit, 1 stop bit (default after factory reset)
2 –no parity bit, 2 stop bits
3 –odd parity, 1 stop bit
4 –even parity, 1 stop bit
NOTE: 3 and 4 are available starting from the Software version 0x218 (dec. 536)
1
0x0008
8 /40009
R
Last error code
1...255
-
0x0011
17 / 40018
RW
Technological: age of data in seconds (read) /
restart(write)
0...65535 s (read), 42330(write)
writing 42330 restarts the device
-
* –The new value is applied after restart.
** –Broadcast slave ID 0 can be used to assign a new ID to device with unknown ID. When addressing by ID 0 the device shall be the only Modbus instrument in the network. The device will not respond to Master command when addressed by ID 0.
*** –This value is dynamic and not kept in EEPROM after restart

E2618_UM_EN Annex 1. E2618 series Modbus holding registers (part 2)
Register addresses are shown 0-based, Addr in hexadecimal, Reg in decimal format.
Modbus holding register numbers MHR are shown in decimal 1-based format, and may be addressed either from 00001 or 40001 base.
Addr
Reg / MHR
RW
Description
Supported values (dec)
Default
0x00A2
162 / 40163
RW
Zero adjustment for temperature data, °C × 100
-32000...+32000 (-320,00...+320,00 °C)
0
0x00A5
165 / 40166
RW
Zero adjustment for gas data, ADC
-32000...+32000 ADC units
0
0x00A6
166 / 40167
RW
Slope adjustment for gas data
1...65535
512
0x00A7
167 / 40168
RW
Change rate limit for gas data, ppm (‰for O2) / s
1...32000, 0 - no limit
0
0x00A8
168 / 40169
RW
Integrating filter time constant, s
1...32000 (seconds), 0 - no filter
0
0x00C9
201 / 40202
RW
Parameter tied to analog output 1
0 –none
1 –temperature
2 –gas concentration
9 –forced Modbus control, value set in MHR / 40204
2
0x00CA
202 / 40203
RW
Parameter tied to analog output 2
0 –none
1 –temperature
2 –gas concentration
9 –forced Modbus control, value set in MHR / 40205
0x00CB
203 / 40204
RW
Forced value for analog output 1***
0...1000 (0,0%...100,0% of output scale)
0
0x00CC
204 / 40205
RW
Forced value for analog output 2***
0...1000 (0,0%...100,0% of output scale)
0
0x00FF
255 / 40256
RW
Sensor, analog outputs, LED and buzzer status
bit[0]=0/1 –sensor present/absent, read-only!
bit[1]=0/1 –analog outputs deactivated/activated
bit[2]=0/1 –in case the sensor is absent, turn signaling off/on analog output1
bit[3]=0/1 –in case the sensor is absent, turn on signaling with low current/high
current on analog output1; if bit[2]==0 this bit will be ignored
bit[4]=0/1 –in case of sensor absent, turn signaling off/on analog output2
bit[5]=0/1 –in case of sensor absent, turn on signaling with low current/high current
on analog output2; if bit[4]==0 this bit will be ignored
bit[6]=0/1 –current/voltage output detected on output1, read-only!
bit[7]=0/1 –current/voltage output detected on output2, read-only!
bit[8]=0/1 –LED deactivated/activated
bit[9]=0/1 –buzzer deactivated/activated (always 0 for E2618)
-
0x0101
257 / 40258
R
Raw gas sensor data
0...4095, ADC units
0x0102
258 / 40259
R
Measured temperature, °C×100
signed integer, -4000...+12500 (-40,00...+125,00 °C)
0x0103
259 / 40260
R
Gas concentration, gas units
0...65535, gas units
0x0105
261 / 40262
RW
0% value for analog output 1
-32000...+32000 (gas unit/°C)
user defined
0x0106
262 / 40263
RW
100% value for analog output 1
-32000...+32000 (gas unit/°C)
user defined
0x0107
263 / 40264
RW
0% value for analog output 2
-32000...+32000 (gas unit/°C)
user defined
0x0108
264 / 40265
RW
100% value for analog output 2
-32000...+32000 (gas unit/°C)
user defined
* –The new value is applied after restart.
** –Broadcast slave ID 0 can be used to assign a new ID to device with unknown ID. When addressing by ID 0 the device shall be the only Modbus instrument in the network. The device will not respond to Master command when addressed by ID 0.
*** –This value is dynamic and not kept in EEPROM after restart
NOTE 1 Sensor absense signalling (bits from [2] to [5]) is available only
for sensors with digital interface ( e.g.-CO2 10K, -O2-L).
NOTE 2 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.