Evikon PluraSens E2618 Series User manual

Carbon monoxide
Colourless, odourless, and tasteless gas. Highly toxic.
Synonyms: Carbonous oxide, Carbon(II) oxide, Flue gas, Monoxide
Chemical formula CO
Molar weight 28
Relative gas density (to air) 0.97
Conversion 1 ppm = 1.15 mg/m3
Boiling point −191.5 °C
Low explosive limit (LEL), % vol in air 12.5
Upper explosive limit (UEL), % vol in air 74
Odour Odourless
Hazards Highly toxic. Mild poisoning causes
lightheadedness, confusion, headache,
dizziness, and flu-like effects. Larger
exposures can lead to toxicity of the
CNS and heart, and death. After acute
poisoning, long-term problems may
occur. CO also have negative effects
on a baby if exposed during
pregnancy. Chronic exposure to low
levels can lead to depression,
confusion, and memory loss.
Exposure limits
(NIOSH)
TWA 40 mg/m3 /35 ppm
IDLH 1380 mg/m3 /1200 ppm
Conversion of ppm to mg/m3 is calculated for 25°C and 1 atm.
Installation guidelines
(See Installation and connections section for general information.)
Carbon monoxide has practically the same density as air and spreads evenly in the
room. Install the sensor in a proximity to possible leakage or generation source, taking
into consideration the temperature of the gas, the air currents in the room etc.
Calibration
E2618-CO transmitters have been calibrated by Manufacturer with standard gas
mixtures before delivery. Provided that the sensor is used under moderate
conditions, field recalibration is recommended every 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-CO_UM_EN Rev 16.07.2019
Specifications
Sensor type electrochemical cell
Sampling method diffusion
Detection range 0...1000 ppm
Maximum overload 2000 ppm
Resolution / digital unit 1 ppm
Response time T90 < 30 s
Repeatability < ± 5%
Sensor lifetime > 6 years
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, wall or duct mount, protection class IP65
Dimensions H82 × W80 × D55 mm
CE marking according to 2014/30/EU and EN61326-1 requirements
Operating conditions
-20...+50 °C, 15...90 %RH, atmospheric pressure
non ATEXrated areas, non-aggressive atmosphere
NOTE The sensor may exhibit sensitivity to acetylene,
etylene, hydrogen and nitric oxide
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, Tartu [e-mail]
Tel. [phone] Estonia www.evikon.eu
PluraSens®
Carbon Monoxide Transmitter
E2618-CO
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
The devices are supplied either in duct-mount or wall-mount version. The wall mount
version of the device is available with remote probe. The remote probe is connected to
the main unit with shielded cable. Default connection cable length is 3 m.
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.
Safety requirements
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.
Operating conditions
The device should be used in explosion-safe (non ATEX -rated) indoor areas, without
aggressive gases in the atmosphere. See Specification table for more details.
Installation and connections
There are no precise rules or standards to follow when installing the gas detectors. The
following points must be taken into account:
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, whether the gas is flammable, or toxiс, or oxygen
displacing),
safety: strong vibrations, mechanical shock, and the sources of strong
electromagnetic interference should be avoided,
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 (see
dimensional drawing below).
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 two M16 cable glands to pass the 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 tin it, or 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 mm2 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.
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.
The output assignments and scales can be changed by Modbus commands.
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 may take up to five minutes after switching
on. During this period relays, analog outputs and Modbus interface are off. A LED
placed on the PCB of the device allows to control the connection process. The LED
response to different processes is presented in the table below.
Process LED mode
Sensor heating period Blinking 0.5 Hz (50% on, 50% off)
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 measurement 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.
It is recommended to keep the device on constantly, except for periods of maintenance
and calibration, deplacement etc.
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.
NB! 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
- Modbus controlled forced state option for analog outputs .
E2618 can be configured through its RS485 interface by Modbus RTU commands. A
standard configuration kit includes Model E1087 USB-EIA485 converter and a software
pack. Please contact your Seller or the Manufacturer 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
36
77
Ø35...36 Ø50
120°
Ø 65 80
32 7
Ø34 max
Hole
35
OUT1
OUT2
0V
A
B
+U
J3
J1 J2
Fieldbus
Controller
Supply
Power
Control LED
Input 1 4-20 mA / 0-10 V
Input 4-20 mA / 0-10 V2
0V / GND
0V
+24V
J1: OUT1 type (open: 4-20 mA; closed: 0-10 V)
J : OUT type2 2 (open: 4-20 mA; closed: 0-10 V)
J : 3 return to factory settings
SENSOR
55 80
130
82
Ø4 mm
M25
M16
50
70
200
M16
80
Ø35
2 03
M25
35
82
55

E2618_UM_EN Annex 1. Modbus RTU Communication Reference
RS 85 communication interface
Databits: 8
Parity: none
Stop bits: 1 or 2
Protocol: Modbus RTU
Supported Modbus functions:
03 - read ultiple 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 none
Stop bits 1, 2 1
Protocol Modbus RTU
Modbus functions 03 - read ultiple 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 fro register 0x0008)
Modbus holding registers
Register addresses are shown 0-based, Addr in hexadeci al, Reg in deci al for at.
Modbus holding register nu bers MHR are shown in deci al 1-based for at, and ay be addressed either fro 00001 or 40001 base.
Addr
Reg / MHR
RW
Description
Supported values (dec)
Default
0x0001
1
R
Hardware version
-
0x0002
2
R
Software version
-
0x0003
3
R
Product serial nu ber
1...65535
-
0x0004
4
RW
Slave ID (net address) *
1...247 **
1
0x0005
5
RW
Baudrate *
1200, 2400, 4800, 9600, 19200, 38400, 57600
9600
0x0006
6 /40007
RW
Response delay, s
1...255
10
0x0007
7 / 40008
RW
Stop bits *
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 fro the Sofrware version 0x218 (dec. 536)
1
0x0008
8 /40009
R
Last error code
1...255
-
0x0011
17 / 40018
RW
Restarts counter
write ‘42330’ to restart device (no response will follow)
-
0x0097
151 /40152
R
Sensor type code
0...65535
0
0x0098
152 /40153
R
Output units code
0 - pp , 1 - ‰, 2 - %
0
* - 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 instru ent in the network. The device will not respond to Master co and when addressed by ID 0.
*** - This value is dyna ic 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 hexadeci al, Reg in deci al for at.
Modbus holding register nu bers MHR are shown in deci al 1-based for at, and ay be addressed either fro 00001 or 40001 base.
Addr
Reg / MHR
RW
Description
Supported values (dec)
Default
0x00A2 162 / 40163 RW
Zero adjust ent for te perature data, °C ×
100 -32000...+32000 (-320,00...+320,00 °C) 0
0x00A5 165 / 40166 RW Zero adjust ent for gas data, ADC -32000...+32000 ADC units 0
0x00A6
166 / 40167
RW
Slope adjust ent for gas data
1...65535
512
0x00A7
167 / 40168
RW
Change rate li it for gas data,
pp (‰ for O
2
) / s
1...32000, 0 - no li it
0
0x00A8 168 / 40169 RW Integrating filter ti e constant, s 1...32000 (seconds), 0 - no filter 0
0x00C9
201 / 40202
RW
Para eter tied to analog output 1
0-none
1- te perature
2- gas concentration
9- forced Modbus control, value set in MHR / 40204
2
0x00CA
202 / 40203
RW
Para eter tied to analog output 2
0-none
1- te perature
2- gas concentration
9- forced Modbus control, value set in MHR / 40205
2
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 (always 0 for E2618),
bit[9]=0/1 - buzzer deactivated/activated (always 0 for E2618) -
0x0100
256 / 40257
R
Raw te perature data, °C×100
signed integer, -4000...+8500 (-40,00...+85,00 °C)
0x0101
257 / 40258
R
Raw gas sensor data
ADC data 0...4095
0x0102
258 / 40259
R
Measured te perature, °C×100
signed integer, -4000...+12500 (-40,00...+125,00 °C)
0x0103
259 / 40260
R
Gas concentration, pp / ‰
signed integer, -32000...+32000 (pp / ‰)
0x0105
261 / 40262
RW
0% value for analog output 1
signed integer, -32000...+32000 (pp / ‰)
0
0x0106
262 / 40263
RW
100% value for analog output 1
signed integer, -32000...+32000 (pp / ‰)
1000
0x0107
263 / 40264
RW
0% value for analog output 2
signed integer, -32000...+32000 (pp / ‰)
0
0x0108
264 / 40265
RW
100% value for analog output 2
signed integer, -32000...+32000 (pp / ‰)
1000
* - 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 instru ent in the network. The device will not respond to Master co and when addressed by ID 0.
*** - This value is dyna ic and not kept in EEPROM after restart