Evikon PluraSens E2638-HFC User Manual

Classification of halocarbon refrigerants

Group Refrigerants
Chlorofluorocarbons (CFC) R11, R12
Hydrochlorofluorocarbons (HCFC) R22, R141b, R142b
Hydrofluorocarbons (HFC) R32, R125, 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
R12 CFC CCl F
2 2
R22 CFC CHClF
2
R125 HFC CHF CF
2 3
R134a HCFC CF CH F
3 2
R143a HCFC CF CH
3 3
R32 HFC CH F
2 2
R1234yf HFO 2,3,3,3-Tetrafluoropropene
R1234ze HFO 1,3,3,3-Tetrafluoropropene
R404a mixture R125, R143a, R134a
R407c mixture R32, R125, R134a
R410a mixture R32, R125
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 (>250°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

Specifications

Sampling method
Sensor type
Typical detection range
Resolution / digital unit
Response time T90
Sensor lifetime
Calibration interval
Operating Conditions
Components Boiling point
weight %
100 −29.8°C
100 −40.8 °C Signal update
100 −48.5 °C
Power supply options
100 −26.2°C Power consumption
100 -47.5 °C
Analog outputs
100 −52 °C
Load resistance
100 -30 °C
100 -19 °C
Digital interface
44:52:4 −47.8 °C
23:25:52 −43 °C
Cable connections
50:50 −48.5 °C
Enclosure
Dimensions
CE marking
Outputs assignment
LCD option
Operating temperature
Display dimensions
Number of digits
Character height
Other features
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
Tel. +372 733 6310
Rev 01.09.2018
diffusion
standard: metal oxide semiconductor
NDIR sensor available on demand
0...1000 ppm
1 ppm
ca. 60 s
> 5 years
12 months
-30...+70 °C
<95 %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
every 1 second
11...30 VDC or 24 VAC
< 2 VA
2 × 4-20 mA / 0-10 V, user settable
R < (Us - 2 V) / 22 mA for 4-20 mA
L
R > 250 kOhm for 0-10 V mode:
L
RS485, Modbus RTU protocol
no galvanic isolation, common-mode voltage -7...+12 V
screwless spring loaded terminals
grey ABS, wall mount, protection class IP65
H90 × W145 × D55 mm
(overall dimensions H140 × W145 × D55 mm)
according to 2014/30/EU and EN61326-1 requirements
OUT1 2 gas; OUT2 2 gas
NOTE for LCD version only output 1 is available
0...+50 °C
72 × 36 mm
3.5 7-segment
14 mm
Backlight
Teaduspargi 7, Tartu info@evikon.eu
50411 Estonia www.evikon.eu
Refrigerant Transmitter
E2638-HFC
User Manual
®
PluraSens