Evikon PluraSens E2638-Cl2 Manual de usuario

PluraSens®

Chlorine Detector-Transmitter

E2638-Cl2

User Manual

E2638-Cl2 Rev 08.05.2023

Table of contents

Chlorine 3

Speciﬁcations 4

Product description 6

Safety requirements 6

Operating conditions 7

Installation guidelines 7

Mounting dimensions 8

Sensor probe handling 9

Gas sensor replacement procedures 9

Electrical connections 10

Correct and incorrect cabling for 24 VAC 12

Operation 13

Maintenance 13

Calibration 13

Delivery set 14

Order code for E2638-Cl2 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

E2638-Cl2 Rev 08.05.2023

Chlorine

Chlorine is a heavy green-yellow gas with a pungent, irritating odor. It is highly toxic and

corrosive. It is used in the chemical industry and for bleaching and disinfection.

Chemical formula

Cl2

Molar weight

70.9

Relative gas density (to air)

2.44

Conversion

1 ppm = 2.90 mg/m3

Boiling point

-34.04 °C

Odor

Pungent, irritating smell

Odor detection threshold

Some individuals will not notice the odor until it is more

than three times the exposure limit.

Hazards

Nonﬂammable, but a strong oxidizer, may react

explosively with many common chemicals.

Potent irritant of the eyes, mucous membrane, skin, and

respiratory system. Death can occur within minutes

after exposure of 400 to 1000 ppm. Chronic exposure of

1ppm can cause a moderate, but permanent, reduction

in pulmonary function.

Exposure

limits

(Directive

2006/15/EC)

TWA

not speciﬁed

STEL

1.5 mg/m3/0.5 ppm

IDLH (NIOSH)

10 ppm

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

E2638-Cl2 Rev 08.05.2023

Speciﬁcations

Sensor type

Electrochemical cell

Sampling method

Diffusion

Typical detection range

0...10 ppm

Maximum overload

100 ppm

Resolution / digital unit

0.1 ppm

Response time T90

< 60 s

Sensor lifetime

>1 years

Calibration interval

6 months

Signal update

Every 1 second

Power supply

12...36 VDC (default),

24 VAC or 230 VAC as options

Power consumption

< 2 VA

Analog outputs

2 × 4-20 mA / 0-10 V, user settable

Outputs assignment

OUT1 gas; OUT2 gas

NOTE for LCD version only one output is available

Output scale width

> 10 × resolution

Recommended: 20-100% of the detection range

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

Cable connections

Screwless spring-loaded terminals

Enclosure

Grey ABS, wall mount, protection class IP65

Dimensions

H90 × W145 × D55 mm

(overall dimensions H140 × W145 × 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

-20...+50 °C, 15...90% RH non-condensing, 0,9...1,1 atm

Explosion-safe areas,

Non-aggressive atmosphere

NOTE! The sensor may exhibit considerable sensitivity to hydrogen sulﬁde

E2638-Cl2 Rev 08.05.2023

Relay option

Output relays

2 × SPST relays (closing contact),

250 VAC / 30 VDC, 5 A max

Default alarm

set-points

RE1 (LOW): set 0.5 ppm; release 0.4 ppm

RE2 (HIGH): set 1 ppm; release 0.8 ppm

Signalling options

Visual

Red and green LEDs

Acoustic alarm

Buzzer 85 dB

LCD indicator 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

E2638-Cl2 Rev 08.05.2023

Product description

E2638 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.

E2638 series provides two independent analog outputs OUT1 and OUT2, user-selectable to

4-20 mA or 0-10 V, proportional to gas concentrations. RS485 Modbus RTU digital

communication interface allows easy instrument conﬁguration and integration into various

automation systems.

The following features are available as an option:

●Two relays RE1 and RE2 with closing contacts. Relay outputs can be used to

switch alarm sirens, ventilation fans, shut-off valves, or other actuators,

●Acoustic (85 dB buzzer) and visual (red and green LED) signaling,

●24 VAC or 230 VAC as options for power supply module,

●LCD indicator,

●Remote probe.

The version of your device is marked on the package. If the symbol

⚠

is 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.

E2638-Cl2 Rev 08.05.2023

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.

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.),

●Chlorine is considerably heavier than air and tends to sink. The sensor should be

placed at ca. 15 cm above 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 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 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). The recommended sensor position is vertical, pointing

downwards.

For installing the device, attach the device to the wall using provided screws through the

side mounting holes or key slots (see mountains dimensions).

E2638-Cl2 Rev 08.05.2023

Mounting dimensions

Front view

Bottom view

E2638-Cl2 Rev 08.05.2023

Sensor probe handling

The E2638 series devices are available with a remote probe. 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 (or the remote probe),

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.

E2638-Cl2 Rev 08.05.2023

Electrical connections

Unscrew four lid screws and detach the lid from the device. Use two M16 cable glands to

let in the cables of the power supply and of the external devices. Without turning on the

power, plug the power cable, and connect the analog/relay outputs and/or digital interface

terminals to the necessary devices according to the relevant connection diagram.

Version with PSU and relays Version with PSU and without relays

Version without PSU and with relays Version without PSU and relays

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