Evikon PluraSens E2638-CO2 Manuel utilisateur

PluraSens®

Carbon Dioxide Detector-Transmitter

E2638-CO2

User Manual

E2638-CO2 Rev 10.05.2021
Table of contents
Carbon Dioxide 3
Speciﬁcations 4
Product description 6
Safety requirements 6
Operating conditions 7
Installation guidelines 7
Mounting dimensions 8
Mounting dimensions (50KN sensor) 9
Sensor probe handling 10
Electrical connections 12
Operation 15
Maintenance 15
Calibration 15
Delivery set 16
Order code for E2638-CO2 options 16
Conﬁguring 17
Return to default settings 17
Emergency mode 17
Modbus RTU Communication 18
RS485 communication interface 18
Communication parameters 18
Modbus holding registers 18
Warranty 23
Manufacturer contacts 23
2

E2638-CO2 Rev 10.05.2021

Carbon Dioxide

Carbon dioxide is a colorless, odorless, non-toxic, and non-ﬂammable gas that is present in

the Earth's atmosphere at a low concentration.

Chemical formula

CO2

Molar weight

Relative gas density (to air)

1.52

Conversion

1 ppm = 1.80 mg/m3

Boiling point

Sublimes

Flammability

Nonﬂammable

Odor

Odorless

Hazards

Dust of various metals (Mg, Zr, Ti, Al, Cr, Mn)is ignitable

and explosive when suspended in carbon dioxide.

In concentrations up to 1% (10000 ppm), it will make

some people feel drowsy and give the lungs a stuffy

feeling. Concentrations of 7% to 10% (70000 to 100000

ppm) may cause suffocation, even in the presence of

suﬃcient oxygen, manifesting as dizziness, headache,

visual and hearing dysfunction, and unconsciousness

within a few minutes to an hour.

Exposure

limits

(Directive

2006/15/EC)

TWA

9000 mg/m3/5000 ppm

STEL

Not speciﬁed

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

E2638-CO2 Rev 10.05.2021

Speciﬁcations

Sensor type

Optical (NDIR)

Dual beam NDIR (optional)

Sampling method

Diffusion

Ordering code

10K

50K

50KN

Detection range

0...10000 ppm

0...5 %vol.

0...50000 ppm

Resolution / digital unit

1 ppm

0.01 %vol.

0.2% FS

Accuracy

±(50 ppm + 3% of

reading)

within 300...5000

ppm

±(70 ppm + 5%

of reading)

±1% of FS range below 25% of range

±2% of detection range for readings

between 25% and 50% of range

±5% of FS range above 50% of range

Response time T90

ca. 2 minutes

Up to 3 minutes

T50 ≤ 20 s; T90 ≤ 60 s

Sensor lifetime

ca. 10 years

> 2 years

Calibration interval

Up to 5 years

No ﬁeld recalibration

Signal update

Every 1 second

Power supply

11...30 VDC,

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

NOTE! for LCD version only output 1 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

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

Explosion-safe areas; pressure 0,9...1,1 atm;

Non-aggressive atmosphere without condensation;

E2638-CO2 Rev 10.05.2021

For 10K version: 0...+50 °C, 0...85 %RH

For 50K version: -25...+50 °C, 0...95 %RH

For 50KN: -40 to +60 °C, 0...95% RH

Relay option

Output relays

2 × SPST relays (closing contact),

250 VAC / 30 VDC, 5 A max

Default alarm

setpoints

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

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-CO2 Rev 10.05.2021

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-CO2 Rev 10.05.2021

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.),

●Since CO2is heavier than air, it is recommended to locate the sensor not higher

than the potential leakage. For air quality control place the sensor in the breathing

zone.

●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-CO2 Rev 10.05.2021

Mounting dimensions

Front view

Bottom view

E2638-CO2 Rev 10.05.2021

Mounting dimensions (50KN sensor)

Front view

Bottom view

E2638-CO2 Rev 10.05.2021

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)

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

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

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