Evikon PluraSens E2670-CO Bedienungsanleitung

PluraSens®

Flameproof

Carbon Monoxide Detector-Transmitter

E2670-CO

User Manual

E2670-CO Rev 15.03.2023

Table of contents

Carbon Monoxide 3

Speciﬁcations 4

Product description 6

Safety requirements 6

Operating conditions 7

Installation guidelines 7

Mounting dimensions 9

Electrical connections 10

Correct and incorrect cabling for 24 VAC 12

Operation 13

Maintenance 13

Calibration 13

Delivery set 14

Order code for E2670-CO 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

E2670-CO Rev 15.03.2023

Carbon Monoxide

Carbon Monoxide is a colorless, odorless, and tasteless gas that is highly toxic.

Synonyms: Carbonous oxide, Carbon (II) oxide, Flue gas, Monoxide.

Chemical formula

Molar weight

Relative gas density (to air)

0,97

Conversion

1 ppm= 1.15 mg/m3

Boiling point

-191.5 °C

Low explosive limit (LEL), % vol. in air

12.5

Upper explosive limit (UEL), % vol. in air

Odor

Odorless

Hazards

Highly toxic. Mild poisoning causes lightheadedness,

confusion, headache, dizziness, and ﬂu-like effects.

Larger exposures can lead to toxicity of the CNS and

heart, and death. After acute poisoning, long-term

problems may occur. CO also has negative effects on a

baby if exposed during pregnancy. Chronic exposure to

low levels can lead to depression, confusion, and

memory loss.

Exposure

limits (NIOSH)

TWA

40 mg/m3 /35 ppm

IDLH

1380 mg/m3 /1200 ppm

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

E2670-CO Rev 15.03.2023

Speciﬁcations

Sensor type

Electrochemical cell

Sampling method

Diffusion

Typical detection range

0...300 ppm

0...1000 ppm

Max. overload

2000 ppm

Resolution / digital unit

1 ppm

Response time T90

< 30 s

Repeatability

< ± 5%

Sensor lifetime

> 10 years

Calibration interval

12 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

Output scale width

> 10 × resolution

Recommended: 20-100% of the detection range

Outputs assignment

OUT1 2 gas; OUT2 2 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

Cable connections

Screwless spring-loaded terminals

Enclosure

Grey die-cast aluminium, wall mount, protection class IP65

Dimensions

H155 × W145 × D110 mm

H155 × W155 × D110 mm (with one cable gland)

H155 × W165 × D110 mm (with two cable glands)

Protection

Flameproof, ATEX: II 3G Ex d IIC T6 Gc

II 3D Ex tb IIIB Ip65 T85°C Dc

ATEX Approvals

Enclosure:

ATEX / IECEx

FTZU 03 ATEX 0207U

IECEx FTZU 12.0017U

E2670-CO Rev 15.03.2023

II 2 G Ex db IIC Gb

II 2 D Ex tb IIIC Db

Glands:

ATEX / IECEx

EESF 19 ATEX 023X

II 2G Ex db IIC Gb

II 2D Ex tb IIIC Db IP66

CE marking

According to 2014/30/EU and 2014/34/EU,

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

EN 61000-6-1:2019, EN 61000-6-2:2019, EN 61326-2-1:2013 (EMC,

Immunity)

EN 60079-0:2018, EN 60079-1:2014, EN 60079-31:2014,

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

Operating conditions

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

Explosion-safe zones and ATEX Zones 2 and 22

Non-aggressive atmosphere

NOTE! The sensor exhibits considerable sensitivity to acetylene,

ethylene, hydrogen, and nitric oxide.

Relay option

Output relays

2 × SPST relays (closing contact),

250 VAC / 30 VDC, 5 A max

Alarm set-points

Determined by the user within 5-95% of the detection range

E2670-CO Rev 15.03.2023

Product description

E2670 is a series of ﬂameproof gas detectors-transmitters intended for operation in safe

zones and ATEX Zones 2 and 22. E2670 series devices are based on the PluraSens®

multifunctional platform and provide all its features. The instruments utilize gas sensors of

various types with excellent repeatability, stability, and long lifetime.

The E2670 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,

●24 VAC or 230 VAC as options for power supply.

The version of your detector 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.

It is crucial to tighten properly all the thread connections (screws, cable glands). Use ATEX

certiﬁed armored cables or cable conduits that are rated for use in the desired

environment.

A disconnecting device that is marked as such and easily accessible should be included in

the installation of this product.

The device should be properly earthed.

E2670-CO Rev 15.03.2023

Operating conditions

The device should be used in a basic electromagnetic environment, where the latter is

deﬁned in EN 61326-1. Avoid strong mechanical shock and vibrations. Although E2670

series devices are suitable for use in the presence of ﬂammable dust, special precautions

should be taken when operating in a dusty environment. Dust may block the porous ﬁlter of

the sensor and compromise the results of the measurement. The detector should be

inspected regularly if used in a dusty atmosphere. Keep the instrument away from direct

sunlight. A sudden temperature or humidity change might affect the sensitivity of the

sensor. Make sure that installation and maintenance are performed in an explosion safe

atmosphere.

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.),

●Carbon monoxide has practically the same density as air and spreads evenly in

the room. Install the sensor in proximity to possible leakage or generation source,

taking into consideration the temperature of the gas, the air currents in the room,

etc.

●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 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.

E2670-CO Rev 15.03.2023

The device is ﬁxed on the wall using two ﬁxing holes located outside the sealed area of the

device (see dimensional drawing). Unscrew four lid screws and detach the lid from the

detector. Fix the detector on the wall and earth the enclosure using an earthing terminal on

the side of the device.

NOTE! Never perform installation or maintenance in an explosive atmosphere!

E2670-CO Rev 15.03.2023

Mounting dimensions

Mounting holes

E2670-CO Rev 15.03.2023

Electrical connections

Unscrew lid from the device. Use the M20 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.

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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