Evikon PluraSens E2660-CO-NO Bedienungsanleitung

PluraSens®

Dual Gas Detector-Transmitter

E2660-CO-NO

User Manual

E2660-CO-NO Rev 29.06.2021
Table of contents
Carbon Monoxide 3
Nitric oxide 4
Speciﬁcations 5
Product description 7
Safety requirements 7
Operating conditions 8
Installation guidelines 8
Mounting dimensions 9
Sensor probe handling 10
Gas sensor replacement procedures 10
Electrical connections 11
Correct and incorrect cabling for 24 VAC 13
Operation 14
Maintenance 14
Calibration 14
Delivery set 15
Order code for E2660-CO-NO options 15
Conﬁguring 16
Return to default settings 16
Modbus RTU Communication 17
RS485 communication interface 17
Communication parameters 17
Modbus holding registers 17
Warranty 22
Manufacturer contacts 22
2

E2660-CO-NO Rev 29.06.2021

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.

E2660-CO-NO Rev 29.06.2021

Nitric oxide

A colorless toxic gas, relatively insoluble in water. When exposed to oxygen (including air),

nitric oxide is converted into nitrogen dioxide.

Chemical formula

Molar weight

Relative gas density (to air)

1.03

Conversion

1 ppm = 1.23 mg/m3

Boiling point

-152 °C

Flammability

Nonﬂammable, but accelerates the burning of

combustible materials.

Odor

Pure NO is odorless, but in the air, it oxidizes to NO2

which has a pungent odor

Hazards

Irritates respiratory tract and eyes, at high concentrations

may cause lung edema and death.

Exposure limits

(Directive

91/322/EEC)

TWA

30 mg/m3/25 ppm

IDLH (NIOSH)

123 mg/m3/100 ppm

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

E2660-CO-NO Rev 29.06.2021

Speciﬁcations

Sampling method

Diffusion

Detected gas

Sensor type

Electrochemical cell

Sensor lifetime

> 10 years

> 12 months

Calibration interval

12 months

6 months

Typical detection range

0...300 ppm

0...1000 ppm

0...250 ppm

Max. overload

2000 ppm

1000 ppm

Response time T90

< 30s

<40 s

Resolution / digital unit

1 ppm

Outputs assignment

OUT1: CO

OUT2: NO

Operating temperature

-20...+50 °C

-30...50 °C

Outputs scale

20-100% of the range;

> 10 × resolution in any case

Operating conditions

15...90 %RH, atmospheric pressure ±10% non-ATEX-rated areas,

Non-aggressive atmosphere

Cross-sensitivity

Acetylene, ethylene, H2, NO

H2S, NO2

Signal update

Every 1 second

Power supply

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

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

E2660-CO-NO Rev 29.06.2021

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

Relay option

Output relays

2 × SPST relays (closing contact),

250 VAC / 30 VDC, 5 A max

Alarm set-points

RE1: set 25 ppm

release 20 ppm

RE2: set 10 ppm

release 8 ppm

Other options

Remote probe

Protection IP65, default cable length 3.0 m;

max height 80 mm, max diameter 65 mm

E2660-CO-NO Rev 29.06.2021

Product description

Dual Gas Detector-Transmitter E2660-CO-NO belongs to the PluraSens® family of

multifunctional measurement instruments. The device is intended for simultaneous

detection of carbon monoxide and nitrogen dioxide. It is a convenient solution for

underground parking. The instrument utilizes electrochemical gas sensors with excellent

repeatability, stability, and long lifetime.

Two analog outputs and RS485 digital interface with industry-standard Modbus RTU

protocol can be used to connect the device to safety or building 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 module,

●Remote probe.

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.

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.

E2660-CO-NO Rev 29.06.2021

Operating conditions

The device should be used both in a non-hazardous area at the atmospheric pressure and

relative humidity in the range 15...90%, 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 transmitter the following

points must be considered:

●Application (the instrument is intended for leakage control.)

●Properties of the space under investigation (room geometry, direction, and

velocity of airﬂows, etc.),

●Carbon monoxide has practically the same density as air. Nitric oxide has

practically the same density as air. As it is easily oxidized to form nitrogen dioxide,

the sensor should be placed as close as possible to the gas source.

●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.

Do not locate the detector close to ventilation openings and strong air currents. Avoid the

areas without air circulation (corners, niches) as well.

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).

E2660-CO-NO Rev 29.06.2021

Mounting dimensions

E2660-CO-NO Rev 29.06.2021

Sensor probe handling

The E2660 series devices are available with a remote probe. The remote probe is

connected to the main unit with a shielded cable. The default connection cable length is 3

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 M25 nut and remove the old

ﬁlter. Place a new ﬁlter into the nut 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.

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