Evikon PluraSens E2618-O2 Bedienungsanleitung

PluraSens®

Oxygen Transmitter

E2618-O2

User Manual

E2618-O2 Rev 08.05.2023

Table of contents

Oxygen 3

Speciﬁcations 4

Product description 6

Safety requirements 6

Operating conditions 6

Installation guidelines 7

Wall mount version 7

Duct mount version 7

Mounting dimensions 8

Sensor probe handling 9

Gas sensor replacement procedures 9

Electrical connections 10

Correct and incorrect cabling for 24 VAC 11

Operation 12

Maintenance 12

Calibration 12

Delivery set 13

Order code for E2618-O2 options 13

Conﬁguring 14

Return to default settings 14

Modbus RTU Communication 15

RS485 communication interface 15

Communication parameters 15

Modbus holding registers 15

Warranty 19

Manufacturer contacts 19

E2618-O2 Rev 08.05.2023

Oxygen

A Colorless gas, one of the main components of the air. Oxygen is necessary for the

breathing of humans and animals, oxygen deﬁciency is harmful to health.

Strong oxidizer, sustains combustion.

Chemical formula

Molar weight

Relative gas density (to air)

1.1

Conversion

1 ppm =1.31 mg/m3

Boiling point

-183°C

Odor

Odorless

Hazards

Strong oxidant. May reacts with combustible and

reducing materials (oils, solvents, etc), causing ﬁre and

explosion hazards. Oxygen enriched atmospheres

(>22% O2) present a signiﬁcant ﬁre and explosion risk.

Oxygen deﬁciency in the air may lead to loss of

concentration, reduced coordination, fatigue. At very

reduced levels fainting and death may occur.

Breathing of oxygen at increased concentrations may

lead to hyperoxia (seizures, respiratory problems,

disorientation).

Normal atmosphere concentration

20.8...21%

Deﬁciency threshold (OSHA)

19.5%

Immediately life-threatening

concentration

<10%

Exposure limits

not established

Conversion of ppm to mg/m3is calculated for 25°C and 1 atm.

E2618-O2 Rev 08.05.2023

Speciﬁcations

Sensor type

Electrochemical cell

Sampling method

Diffusion

Order code

O2-3Y

O2-5Y

Sensor lifetime

>2 years

>3 years

>5 years

Operating conditions

-30...+50 °C

-30…+50 °C

-40…+60 °C

15...90% RH

5...95% RH

15...90% RH

non-condensing, 0,9...1,1 atm

Explosion-safe areas, non-aggressive atmosphere

Response time T90

< 10 s

Typical detection range

0...25% vol

Maximum overload

30%

Resolution / digital unit

0.01 % vol

Calibration interval

6 months

Signal update

Every 1 second

Power supply

12...36 VDC (default)

24 VAC as option

Power consumption

< 2 VA

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

Analog outputs

2 × 4-20 mA / 0-10 V, user settable

Outputs assignment

OUT1: Gas; OUT2: Gas

Output scale width

> 10 × resolution, Recommended: 20-100% of the detection range

Enclosure

Grey ABS, wall mount, protection class IP65

Dimensions

H82 × W80 × 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

E2618-O2 Rev 08.05.2023

NOTE! Acid gases such as CO2and SO2will be absorbed by the electrolyte and tend to increase the

ﬂux of oxygen to the electrode. This gives an enhanced oxygen signal of approximately 0.3% of signal

per 1% CO2. Electrochemical oxygen sensors are not suitable for continuous operation in

concentrations of CO2above 25%.

Other options

Remote probe

Protection IP65, default cable length 3.0 m;

max height 80 mm, max diameter 65 mm

E2618-O2 Rev 08.05.2023

Product description

E2618 series 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.

E2618 series provide two independent analog outputs OUT1 and OUT2, user-selectable to

4-20 mA or 0-10 V, proportional to the chosen scale for gas concentration. RS485 Modbus

RTU digital communication interface allows easy instrument conﬁguration and integration

into various automation systems.

Remote probe and duct mount versions are available.

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

⚠

symbol is marked on

the product, 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.

E2618-O2 Rev 08.05.2023

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 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.),

●For air quality control install the detector in the breathing zone. To control the

absence of oxygen (e.g. while working under an inert atmosphere) place the

sensor in the working area.

●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 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 transmitters should be

distributed evenly in the room.

For personal safety control, the 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

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 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 transmitter.

E2618-O2 Rev 08.05.2023

Mounting dimensions

Wall mount version

Duct mount version

E2618-O2 Rev 08.05.2023

Sensor probe handling

The wall mount version of the 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.

Gas sensor replacement procedures

1. Remove the sensor head cap from the device,

2. Remove the PTFE ﬁlter (if it is not removed within the cap),

3. Remove the O-ring rubber,

4. Detach the electrochemical sensor from the device,

5. Insert the new electrochemical sensor inside,

6. Put back the O-ring rubber, PTFE ﬁlter, and the head cap, respectively.

E2618-O2 Rev 08.05.2023

Electrical connections

Unscrew four lid screws and detach the lid from the device. Use the 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.

PCB without PSU and relays

Jumpers

OUT1 type (open: 4-20 mA; closed 0-10 V)

OUT2 type (open: 4-20 mA; closed 0-10 V)

Reset Modbus network parameters to default

X4 terminals

OUT1

4-20 mA / 0-10 V output

OUT2

4-20 mA / 0-10 V output

0 V / 24 VAC Neutral (optional)

RS485 A / Data +

RS485 B / Data -

+24 VDC / 24 VAC Phase (optional)

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