Evikon E2630-CO User manual

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Carbon Monoxide Detector
E2630-CO
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User Manual
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E2630-CO Rev 14.12.2020
Table of contents
Carbon Monoxide 3
Specifications 4
Product description 5
Safety requirements 5
Operating conditions 5
Installation guidelines 6
Mounting dimensions 7
Connections 8
Operation 9
Sensor probe handling 10
The electrochemical gas sensor replacement procedures 10
Maintenance 11
Calibration 11
Delivery set 11
Order code for E2630-CO options 11
Warranty 12
Manufacturer contacts 12
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2

E2630-CO Rev 14.12.2020
Carbon Monoxide
A Colorless, odorless, and tasteless gas that is highly toxic. Carbon monoxide is formed as              
a result of incomplete combustion of carbon-containing compounds, e.g. while operating a           
furnace, an oven, or an engine when there is a limited supply of air.
Synonyms: Carbonous oxide, Carbon (II) oxide, Flue gas, Monoxide

Conversion of ppm to mg/m3 is calculated for 25°C and 1 atm.
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
 
3
Chemical formula
CO
Molar weight
28
Relative gas density (to air)
0,97
Conversion
1 ppm= 1.15 mg/m3
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 (ACGIH)
TWA
40 mg/m3 /35 ppm
STEL
1380 mg/m3 /1200 ppm

E2630-CO Rev 14.12.2020
Specifications
4
Sensor type
Electrochemical cell
Sampling method
Diffusion
Typical detection range
0...200 ppm
0...1000 ppm
Alarm setpoints
(release-LOW-HIGH)
18 - 25 - 125 ppm
88 - 125 - 250 ppm
Response time T90
< 30 seconds
Signal update
Every 1 second
Sensor lifetime
> 6 years
Calibration interval
6 months
Power supply
11...30 VDC,
24 VAC or 90...265 VAC as options
Power consumption
< 2 VA
Digital interface
UART
Relay outputs
2 × SPDT, max 5 A, 30 VDC / 250 VAC
Alarm signaling
Buzzer 2 kHz, 85 dB; red LED
LEDs
Green/red (operation/fault), red (gas alarm)
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...95% RH without condensation, 0,9...1,1 atm;
Non-ATEX-rated areas
Avoid strong mechanical shock, vibrations or EMI Avoid exposure to
corrosive gases
NOTE! The sensor may exhibit sensitivity to acetylene, ethylene, hydrogen,
and nitric oxide.

E2630-CO Rev 14.12.2020
Product description
E2630 series gas detectors are compact and easy-to-use instruments. The devices utilize           
novel fully calibrated and temperature compensated gas sensors with excellent         
repeatability, stability, and long lifetime.
Two relays RE1 and RE2 with switching contacts can be used to control alarm sirens,              
ventilation fans, shut-off valves, or other actuators. The devices are equipped with a visual             
and acoustic alarm. 24 VAC or 230 VAC power supply options are available.
The version of your detector is marked on the package.
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 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.
Operating conditions
The device should be used both in a non-hazardous indoor area at the atmospheric             
pressure ±10% and 15...90 %RH without condensation 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.
When stored without powering in normal air for a long period, or in an environment              
contaminated with organic vapors or volatile oils, the sensor may show a reversible drift in              
resistance according to the environment.
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E2630-CO Rev 14.12.2020
Installation guidelines
There are no precise rules or standards to follow when installing gas detectors. The             
following points must be taken into account:
●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 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 detector should be           
distributed evenly in the room.
Do not locate the detector close to ventilation openings and strong air currents. Avoid the              
areas without air circulation (corners, niches) as well.
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.
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E2630-CO Rev 14.12.2020
Mounting dimensions
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7

E2630-CO Rev 14.12.2020
Connections
1. Unscrew four lid screws and detach the lid from the device;
2. Attach the device to the wall using provided screws through the side mounting holes or               
key slots (This step may be done before step 1, consider your convenience).
3. Use two M16 cable glands to let in the cables of the power supply and of the external                  
devices.
Connect the power terminals N and L to the 24 V AC/DC source if you are using detector                 
version -24 or to 230 V AC mains if you are using detector version -230 (see diagram                
below).

The terminals on the E2630 series devices are suitable for a wide range of wires with               
cross-section 0,2...1,5 mm2. We recommend to strip the wire end by 5...6 mm and use the               
wire end sleeves. To connect the wire, loosen the screw, insert the wire end into the               
terminal hole and tighten the screw. The outer diameter of the cable must not exceed 8               
mm.
To use relay outputs, connect the chosen actuators to the relay terminals RE1 and/or RE2.
NOTE! Actuator short-circuits shall be avoided, to protect the instrument relays, use           
external fuses or safety switches.
3. Place the lid back and fix it with the screws. Make certain that the cable glands are                 
properly tightened to ensure the conformity to IP65 protection class.
4. Turn on the power. It may take up to five minutes after switching on for the sensor to                  
stabilize.
For stable operating, it is recommended to keep the detector powered constantly, except            
for periods of maintenance and calibration, replacement, etc.
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E2630-CO Rev 14.12.2020
Operation
During the first ca. 60 seconds after powering on E2630 performs a warming-up and             
self-diagnostic routine, indicated by the flashing of each LED. The upper dual-color LED            
remains continuously green in normal operation and blinks red in case of device or sensor              
fault. The warm-up time depends on the sensor type, unpowered period, and atmosphere.
During the first 30 seconds after powering on you may select the automatic or manual              
mode of alarm release. Touch the device with the magnet key on the spot shown in the                
drawing below.

A short touch (< 2 s) enables the automatic mode, a touch of 2...10 s — manual mode. The                  
activation of the automatic mode is followed by a single LED blinking and acoustic signal.              
If manual mode is activated, the double acoustic and light signal follows.
If the gas concentration exceeds the LOW alarm setpoint, the bottom red LED starts             
flashing at a rate of 1 Hz, and the relay RE1 switches over. The first alarm stops                
automatically if the gas concentration drops below 80% of the LOW alarm setpoint.
If the gas level exceeds the HIGH alarm setpoint, the bottom red LED starts flashing and               
the buzzer starts beeping at a rate of 2 Hz, and also the relay RE2 switches over.                
Depending on the selected release mode, the HIGH alarm stops automatically or can be             
stopped with a short touch of the magnet key, if the gas level has dropped below 80% of                 
the LOW alarm setpoint. Upon contact, the key should activate the reed switch located left              
of the sensor inside the device.
Apart from the warming-up period, a 2....10 s touch causes the device to reset and perform               
the self-diagnostic routine for testing purposes. To check the visual and acoustic alarm,            
touch the device with the magnet key for more than 10 s. This will launch blinking and                
beeping (stops as soon as the key is withdrawn).
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E2630-CO Rev 14.12.2020
Sensor probe handling
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 may 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.
The electrochemical gas sensor replacement procedures
1. Un-power detector;
2. Unscrew sensor head cap;
3. Carefully take out the sensor cell;
4. Disconnect the first wire from the old sensor and connect to the same pin on the               
new sensor;
5. Disconnect the second wire from the old sensor and connect to the second pin on              
the new sensor;
6. Insert the new sensor into the sensor head and screw back the sensor head cap.
 
10