Evikon PluraSens E2660-CO-NO2 User manual

PluraSens®
Dual Gas Detector-Transmitter
E2660-CO-NO2
User Manual

E2660-CO-NO2 Rev 06.04.2021
Table of contents
Carbon Monoxide 3
Nitrogen Dioxide 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
Operation 13
Maintenance 13
Calibration 13
Delivery set 14
Order code for E2660-CO-NO2 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
2

E2660-CO-NO2 Rev 06.04.2021
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
CO
Molar weight
28
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
74
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.
3

E2660-CO-NO2 Rev 06.04.2021
Nitrogen Dioxide
A Colorless toxic gas, relatively insoluble in water. When exposed to oxygen (including air),
nitric oxide is converted into nitrogen dioxide.
Chemical formula
NO2
Molar weight
46
Relative gas density (to air)
1.59
Conversion
1 ppm = 1.88 mg/m3
Boiling point
21.2 °C
Flammability
Powerful oxidize, can cause many organic substances
(wood, paper, oil, etc) to ignite.
Irritates the skin, eyes, and respiratory tract. Exposure to
levels above 100 ppm can cause death due to
asphyxiation from fluid in the lungs. There are often no
symptoms at the time of exposure other than a
transient cough, fatigue, or nausea, but over hours
inflammation in the lungs causes edema.
Odor
Characteristic pungent odor
Odor threshold
0.1 to 0.4 ppm
Hazards
Irritates the respiratory tract and eyes, at high
concentrations may cause lung edema and death.
Exposure limits
(NIOSH)
ST REL
1.88 mg/m3/ 1 ppm
IDLH
37.6 mg/m3/20 ppm
Conversion of ppm to mg/m3is calculated for 25°C and 1 atm.
4

E2660-CO-NO2 Rev 06.04.2021
Specifications
Sampling method
Diffusion
Detected gas
CO
NO2
Sensor type
Electrochemical cell
Electrochemical cell
Sensor lifetime
> 6 years
> 2 years
Calibration interval
6 months
6 months
Typical detection range
0...300 ppm
0...1000 ppm
(option)
0...20 ppm
0...100 ppm
Max. overload
2000 ppm
100 ppm
200 ppm
Response time T90
< 30s
< 40 s
< 60 s
Resolution / digital unit
1 ppm
0.1 ppm
1 ppm
Outputs assignment
OUT1 2 gas 1 (CO)
OUT2 2 gas 2 (NO2)
Outputs scale
0-1000
0-200
0-100
Operating temperature
-20...+50 °C
-30...50 °C
-20...50 °C
Operating conditions
15...90 %RH, atmospheric pressure ±10% non-ATEX-rated areas,
Non-aggressive atmosphere
Cross-sensitivity
Acetylene, ethylene, H2, NO
Chlorine Cl2
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
5

E2660-CO-NO2 Rev 06.04.2021
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 3 ppm
release 2.4 ppm
Other options
Remote probe
Protection IP65, default cable length 3.0 m;
max height 80 mm, max diameter 65 mm
6

E2660-CO-NO2 Rev 06.04.2021
Product description
Dual Gas Detector-Transmitter E2660R-CO-NO2 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.
7

E2660-CO-NO2 Rev 06.04.2021
Operating conditions
The device should be used both in a non-hazardous area at the atmospheric pressure
(85...110 kPa), 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. Nitrogen dioxide is 1.6
times heavier than air, but in the underground parking, it rises to the ceiling with
hot exhaustion gases, so the sensor should be located at 1.2...1.5 m from the
floor in order to detect potentially dangerous concentration more quickly.
●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.
8

E2660-CO-NO2 Rev 06.04.2021
For installing the device, attach the device to the wall using provided screws through the
side mounting holes or key slots (see mountains dimensions).
Mounting dimensions
9

E2660-CO-NO2 Rev 06.04.2021
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
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 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.
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.
10