Evikon PluraSens E2608-HFC Bedienungsanleitung

PluraSens®

Refrigerant Detector-Transmitter

E2608-HFC

User Manual

E2608-HFC Rev 05.05.2021
Table of contents
Hydroﬂuorocarbons 3
Speciﬁcations 5
Product description 7
Safety requirements 7
Operating conditions 7
Installation guidelines 8
Wall mount version 8
Duct mount version 8
Mounting dimensions 9
Sensor probe handling 10
Electrical connections 11
Operation 13
Maintenance 13
Calibration 13
Delivery set 14
Order code for E2608-HFC options 14
Conﬁguring 15
Return to default settings 15
Modbus RTU Communication 16
RS485 communication interface 16
Communication parameters 16
Modbus holding registers 16
Warranty 21
Manufacturer contacts 21
2

E2608-HFC Rev 05.05.2021

Hydroﬂuorocarbons

HFCs are relatively non-ﬂammable, chemically stable, and nonreactive.

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 greenhouse effect. According to the 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) is the last generation of refrigerants, more environmentally friendly than

HFCs, but moderately ﬂammable (A2L Class).

Properties of selected halocarbons

Name

Type

Components

Components weight %

Boiling point

R12

CFC

CCl2F2

100

−29.8 °C

R22

CFC

CHClF2

100

−40.8 °C

R125

HFC

CHF2CF3

100

−48.5 °C

R134a

HCFC

CF3CH2F

100

−26.2°C

R143a

HCFC

CF3CH3

100

-47.5 °C

R32

HFC

CH2F2

100

−52 °C

R1234yf

HFO

2,3,3,3-Tetraﬂuoropropene

100

-30 °C

R1234ze

HFO

1,3,3,3-Tetraﬂuoropropene

100

-19 °C

R404a

mixture

R125, R143a, R134a

44:52:4

−47.8 °C

R407c

mixture

R32, R125, R134a

23:25:52

−43 °C

R410a

mixture

R32, R125

50:50

−48.5 °C

Overexposure may cause dizziness and loss of concentration. At higher concentrations, CNS

depression and cardiac arrhythmia may result from exposure. Vapors displace air and can cause

E2608-HFC Rev 05.05.2021

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.

E2608-HFC Rev 05.05.2021

Speciﬁcations

Sampling method

Diffusion

Sensor type

Standard: metal oxide semiconductor

Typical detection range

0...1000 ppm

Resolution / digital unit

1 ppm

Response time T90

<120 s

Sensor lifetime

> 5 years

Calibration interval

12 months

Signal update

Every 1 second

Power supply options

11...30 VDC (default),

24 VAC or 90...265 VAC as options

Power consumption

< 2 VA

Analog outputs

2 × 4-20 mA / 0-10 V, user settable

Outputs assignment

OUT1: Gas; OUT2: Gas

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

Output scale width

> 10 × resolution

Recommended: 20-100% of the detection range

Relay outputs

2 × SPST, max 5 A, 30 VDC / 250 VAC

Default alarm setpoints

RE1 (LOW): set 100 ppm; release 80 ppm

RE2 (HIGH): set 500 ppm; release 400 ppm

Enclosure

Light beige ABS, wall mount, protection class IP65

Dimensions

H87 × W82 × D55 mm

CE marking

According to 2014/30/EU and 2014/35/EU, EN 50491-4-1:2012

EN 61000-6-3:2020, EN 61326-1:2013(EMC, emissions)

EN 61000-6-1:2019, EN 61000-6-2:2019(EMC, Immunity)

EN 60079-29-1:2016, EN 60079-29-2:2015 and EN 60079-29-3:2014

Operating conditions

-30...+60 °C; <95% RH non-condensing, 0,9...1,1 atm

Explosion- safe indoor areas,

Normal ambient oxygen level

Avoid strong mechanical shock, vibrations or EMI

Avoid exposure to corrosive gases or silicon containing products

E2608-HFC Rev 05.05.2021

Other options

Remote probe

Protection IP65, default cable length 3.0 m;

max height 80 mm, max diameter 65 mm

E2608-HFC Rev 05.05.2021

Product description

E2608 series detectors-transmitters belong to the PluraSens® family of multifunctional

measurement instruments. The instruments utilize gas sensors of various types with

excellent repeatability, stability, and long lifetime.

E2608 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.

Two relays RE1 and RE2 with closing dry contacts can be used to switch alarm sirens,

ventilation fans, shut-off valves, or other actuators. Remote probe, duct mount version and

24 VAC or 230 VAC power supply options are available.

The version of your detector-transmitter is marked on the package. If the symbol

⚠

marked on the equipment, consult the documentation for further information.

Safety requirements

Misuse will impair the protection of the product. 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.

Removal of the PCB from the enclosure voids the warranty. Do not touch the electronic

components directly, as they are sensitive to static electricity.

Connection diagrams can be found in the electrical connections section. The device might

not perform correctly or be damaged if the wrong power supply is connected.

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 both in a non-hazardous area and in a basic electromagnetic

environment, where the latter is deﬁned in EN 61326-1. Avoid strong mechanical shock and

vibrations. Avoid corrosive atmosphere and areas highly contaminated with dust, oil mist,

etc. Keep the instrument away from direct sunlight. A sudden temperature or humidity

change might affect the sensitivity of the sensor.

E2608-HFC Rev 05.05.2021

Installation guidelines

Before proceeding with the installation it is mandatory to read the Safety requirements

section and make sure to comply with all listed instructions. Installation standards EN

60079-29-2 and EN 45544-4 are also recommended for further instructions and related

information about the installation. During the installation of the detector-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 airﬂows, etc.),

●Halocarbons are heavier than air and tend to sink. The sensor should be placed

near the ﬂoor.

●The device should be accessible for maintenance and repair.

The aforementioned conditions above will affect the coverage area of the device. however,

the coverage area for a detector-transmitter is usually between 2.5 to 5 meters radius.

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 detector-transmitters

should be distributed evenly in the room.

For personal safety control, the detector-transmitters are installed in the breathing zone (at

the height of the head of people or animals). The recommended sensor position is vertical,

pointing downwards.

Wall mount version

Attach the mounting lugs to the back of the detector-transmitter using the provided

screws. Screw the device to the wall through the mounting lug holes (for dimensions see

the drawing in the next section).

Duct mount version

Cut a 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

detector-transmitter.

E2608-HFC Rev 05.05.2021

Mounting dimensions

Wall mount version with mounting lugs

Duct mount version

E2608-HFC Rev 05.05.2021

Sensor probe handling

The wall-mount version of the detector-transmitter is available with a remote probe (see

drawing below for dimensions). The remote probe is connected to the main unit with a

shielded cable. The default remote probe cable length is 3 m.

A) Wall mount remote probe with ﬁxing clamp (default version),

B) Remote probe with rubber ﬂange and three self-tapping screws (on request)

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 should be replaced if it gets

strongly contaminated. To replace the PTFE ﬁlter, unscrew the sensor head cap and

remove the old ﬁlter. Place a new ﬁlter into the cap and tighten it again.

NOTE! Never stab or press the ﬁlter near its center where the sensor is located since this

may damage the sensor. Do not remove the ﬁlter as it may cause the device to show

incorrect values and/or break the sensor.

The recommended orientation of the sensor probe is vertical with the sensor tip pointing

downwards. This prevents the possible accumulation of condensed water on the sensor

protection ﬁlter.

NOTE! Metal oxide semiconductor sensors are not replaceable.

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