Evikon PluraSens E2638-HFC User manual

Classification of halocarbon refrigerants
Group Refrigerants
Chlorofluorocarbons (CFC) R11, R12
Hydrochlorofluorocarbons (HCFC) R22, R141b, R142b
Hydrofluorocarbons (HFC) R32, R12 , R134a, R143a
Hydrofluoroolefins (HFO) R 1234ez, R1234yf, R1336mzz
Chlorine containing refrigerants (CFC and HCFC) are considered to be damaging
to the ozone layer and contributing to the grenhouse effect. According to Montreal
Protocol, chlorine containing halocarbons should be completely dismissed and
their manufacturing closed down.
Hydrofluorocarbons (HFC) contain no chlorine and are safer for the environment.
Now hydrofluorocarbons are the most commonly used halocarbon refrigerants.
Hydrofluoroolefins (HFO) are the last generation of refrigerants, more
environmentally friendly than HFCs.
Properties of selected halocarbons
Name Type Components Components
weight %
Boiling point
R12 CFC CCl2F2100 −29.8°C
R22 CFC CHClF2100 −40.8 °C
R12 HFC CHF2CF3100 −48. °C
R134a HCFC CF3CH2F 100 −26.2°C
R143a HCFC CF3CH3100 -47. °C
R32 HFC CH2F2100 − 2 °C
R1234yf HFO 2,3,3,3-Tetrafluoropropene 100 -30 °C
R1234ze HFO 1,3,3,3-Tetrafluoropropene 100 -19 °C
R404a mixture R12 , R143a, R134a 44: 2:4 −47.8 °C
R407c mixture R32, R12 , R134a 23:2 : 2 −43 °C
R410a mixture R32, R12 0: 0 −48. °C
Overexposure may cause dizziness and loss of concentration. At higher
concentrations, CNS depression and cardiac arrhythmia may result from
exposure. Vapours displace air and can cause asphyxiation in confined spaces.
At higher temperatures (>2 0°C) decomposition products may include
hydrofluoric acid (HF) and carbonyl halides.
An escape of refrigerant through a leak may damage the refrigerating facilities.
Installation guidelines
(See Installation and connections section for general information.)
Halocarbons are heavier than air and tend to sink. The sensor should be placed near
the floor.
Calibration
E2638-HFC 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 12 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 E2638-HFC
– Mounting accessories:
4 screws with plastic dowels
fixing clamp for remote probe version
E2638-HFC_UM_EN Rev 01.09.2018
Specifications
Sampling method diffusion
Sensor type standard: metal oxide semiconductor
NDIR sensor available on demand
Typical detection range 0...1000 ppm
Resolution / digital unit 1 ppm
Response time T90 ca. 60 s
Sensor lifetime > years
Calibration interval 12 months
Operating conditions
-30...+70 °C
<9 %RH, atmospheric pressure ±10%;
explosion safe (non ATEX rated) spaces
Normal ambient oxygen level
Avoid strong mechanical shock, vibrations or EMI
Avoid exposure to corrosive gases or silicon containing
products
Signal update every 1 second
Power supply options 11...30 VDC or 24 VAC
Power consumption < 2 VA
Analog outputs 2 × 4-20 mA / 0-10 V, user settable
Load resistance RL < (Us - 2 V) / 22 mA for 4-20 mA
RL > 2 0 kOhm for 0-10 V mode:
Digital interface RS48 , Modbus RTU protocol
no galvanic isolation, common-mode voltage -7...+12 V
Cable connections screwless spring loaded terminals
Enclosure grey ABS, wall mount, protection class IP6
Dimensions H90 × W14 × D mm
(overall dimensions H140 × W14 × D mm)
CE marking according to 2014/30/EU and EN61326-1 requirements
Outputs assignment OUT1 2 gas; OUT2 2 gas
NOTE for LCD version only output 1 is available
LCD option
Operating temperature 0...+ 0 °C
Display dimensions 72 × 36 mm
Number of digits 3. 7-segment
Character height 14 mm
Other features Backlight
arranty
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®
Refrigerant Transmitter
E2638-HFC
User Manual

E2638 series transmitters belong to the new PluraSens® family of multifunctional
measurement instruments. The instruments utilise gas sensors of various types with
excellent repeatability, stability and long lifetime
E2 38 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.
The device is available with attached or remote probe. The remote probe is connected
to the main unit with shielded cable. Default connection cable length is 3 m.
A design with LCD 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
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.
The device is fixed on the wall using four round holes or two key slots (see dimensional
drawing below).
Connections
1. Unscrew four lid screws and detach the lid from the transmitter. Use two M1 cable
glands to pass the cables of the power supply and of the external devices.
2. Plug the power cable and connect the analog outputs and/or digital interface
terminals to the relevant devices according to the connection diagram.
The screwless quick connect spring terminals on the E2 38 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.
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. 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 detector is properly fixed, the external devices connected,
power on and control LED is constantly lit. Make certain that the cable glands are
properly tightened to ensure the conformity to IP 5 protection class. Place the lid
back and fix it with the screws. The device is ready to use.
It is recommended to keep the transmitter powered constantly, except for periods of
maintenance and calibration, deplacement etc.
Sensor probe andling
The E2 38 series transmitters are 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 E2 38 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 .
E2 38 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
. 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
Field us
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)
SENSOR
145
115
90 66
~140
55
130
E2638
M 61
M25
30

E2638_UM_EN Annex 1. Modbus RTU Communication Reference
R 485 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
RW
Response delay, s
1...255
10
0x0007
7
RW
Stop bits *
1, 2
1
0x0008
8
R
Last error code
1...255
-
0x0011
17
RW
Restarts counter
write ‘42330’ to restart device (no response will follow)
-
* - 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

E2638_UM_EN Annex 1. E2638 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