Evikon E2610-NH3 User manual

E2610 series gas detectors are compact and easy-to-use instruments.
The devices utilise novel fully calibrated and temperature compensated gas
sensors with excellent repeatability, stability and long lifetime.
Two relays with switch-over contact may be used for remote signalling or
ventilation control. Flashing LED and an internal buzzer give alarms at two set-
points.
Safety requirements
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.
Operating conditions
The device should be used in explosion-safe (non ATEX -rated) indoor areas at
the atmospheric pressure ±10% and 15...90 %RH without condensation
Avoid exposure to highly corrosive gases (H2S, SO2, HCl, Cl2 etc), or high
concentrations of basic gases, such as ammonia
Avoid mechanical shock or strong vibrations.
Avoid sources of electromagnetic interference
See Specifications table for more details
Installation
There are no precise rules or standards to follow when installing the 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
air flows etc),
detected gas (relative density to air, whether the gas is flammable, or toxiс, or
oxygen displacing, whether the gas is heated),
safety: strong vibrations, mechanical shock, and the sources of strong
electromagnetic interference should be avoided,
the device should be accessible for maintenance and repair.
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). Recommended sensor position is vertical, pointing
downwards. See Installation guidelines section for more information.
The gas detector should be mounted on a wall at a place located in proximity to
possible gas source. Since carbon monoxide has practically the same density as
air, the detector should be installed in the breathing zone (1.5 m above the floor,
the height may vary depending on application) or near the potential leakage
source. Do not locate the detector close to ventilation openings and strong air
currents. Avoid the areas without air circulation (corners, niches) as well. The
device should be available for maintenance and repair.
Connections
1. Detach the base of the enclosure by gently pulling along four guiding pins.
2. Attach the base to the wall with two screws. (see drawings below).
8537
85
63
3. Use rounded cutouts on the side of the base to let in the cables from the power
supply and of the external devices as shown below.
For easier connection, terminal blocks of E2610 series devices are removable. To
dismount the terminal block, pull it off from the PCB.
Connect the power terminals N and L to the 24 V AC/DC source if you are using
detector version -24 or to 230 VAC mains if you are using detector version -230
(see diagram below).
The terminals on the E2610 series devices are suitable for a wide range of wires
with cross-section 0,2...1,5 mm2. We recommend to strip the wire end by 5...6 mm
and tin it, or to use the wire end sleeves. To connect wire, loosen the screw, insert
the wire end into terminal hole and tighten the screw.
RE1 RE2
N L
PSU
RE1
RE2
sensor*
x5
buzzer
*Sensors may have different shape and/or size
Connect external devices. Relay switch-over outputs may be used to control
directly 24 V or 230 V (for versions -24 and -230 respectively) powered alarm
sirens, ventilation fans, shut-off valves or other actuators.
Attach terminal blocks to the board
4. Push enclosure to the base.
5. Turn on the power. It will take ca. 60 seconds after switching on for the sensor
to stabilize.
Operation
During the first ca.60 seconds after powering on E2610 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 automatic or manual
mode of alarm release. By shortly (< 2 s) pressing the button on the device’s front
panel you enable the automatic mode, by pressing the button for 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, double acoustic and light
signal follows.
If 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 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 by pressing the button, on condition that the gas
level has dropped below 80% of the LOW alarm setpoint.
Beyond the warm-up period, holding down the button for 2...10 seconds and
releasing causes E2610 to reset and perform the self-diagnostic routine for testing
purposes.
When holding the button down for over 10 seconds, E2610 imitates the reaching
of the HIGH setpoint with the respective light and sound indication and switching
over the relays.
Warranty
This product is warranted to be free from defects in material and workmanship for
a period of one year from the date of original sale. During this warranty period
Manufacturer will, at its option, either repair or replace product that proves to be
defective. This warranty is void if the product has been operated in conditions
outside ranges specified by Manufacturer or damaged by customer error or
negligence or if there has been an unauthorized modification.

Ammonia
Colourless gas, highly soluble in water, with characteristic pungent smell.
Ammonia is a large-scale product of chemical industry widely used as a raw
material for production of fertilizers and explosives, as a refgigerant (R 7), as a
cleaning and antimicrobal agent.
Ammonia is also produced naturally from decomposition of organic matter,
including plants and animals.
Chemical formula NH3
Molar weight 7
Relative gas density (to air) 0,59
Conversion ppm = 0.70 mg/m3
Boiling point -33.34 °C
Low explosive limit (LEL), % vol in air 5
Upper explosive limit (UEL), % vol in air 28
Odour Characteristic pungent smell
Odour detection threshold 0.04 ppm ...57 ppm according to
different studies
Hazards Ammonia is an irritant to skin, eyes
and respiratory tract. Ammonia
inhalation causes breathing difficulties
(wheezing). At high concentrations
may lead to pulmonary edema.
Exposure limits
(Directive 2000/39/EC)
TWA 4 mg/m3 /20 ppm
STEL 36 mg/m3 /50 ppm
Conversion of ppm to mg/m3 is calculated for 25°C and atm.
Installation guidelines
(See Installation section for general information.)
Ammonia is lighter than air, so the sensor should be placed higher than the poternial
leakage or formation source.
NB Do not use detector with electrochemical sensor in areas with constatnly high
ammonia contents, such as poultry and cattle sheds.
Calibration
To ensure accuracy E26 0-NH3 should be calibrated once a year by
qualified technician using standard calibration gas mixtures. Please contact your
dealer for more information.
Delivery set
– Ammonia Detector E26 0-NH3
– Mounting accessories: 2 screws and 2 plastic dowel plugs
Warranty
This product is warranted to be free from defects in material and workmanship for
a period of one year from the date of original sale. During this warranty period
Manufacturer will, at its option, either repair or replace product that proves to be
defective. This warranty is void if the product has been operated in conditions
outside ranges specified by Manufacturer or damaged by customer error or
negligence or if there has been an unauthorized modification.
E26 0-NH3_UM_EN Rev 9. .20 9
Specifications
Sensor type metal oxide semiconductor electrochemical cell
Sampling method diffusion
Detection range
0... 00 ppm
0...300 ppm
(up to 000 ppm)
0... 00 ppm
0...500 ppm
(up to 000 ppm)
Default alarm setpoints
(release-LOW-HIGH)
8 - 25 - 35 ppm
25 - 35 - 50 ppm
8 - 25 - 35 ppm
25 - 35 - 300 ppm
Resolution/digital unit ppm
Sensor lifetime > 5 years >2 years
Calibration interval 2 months 6 months
Operating conditions
5...95% RH without condensation, 0,9... , atm
explosion-safe (non ATEX -rated) indoor areas without
aggressive gases in the air
-30...+50 °C;
no volatile silicon
compounds in the air,
normal ambient oxygen level
- 0...+50 °C
Warm-up time up to minute, depending on unpowered period and
atmosphere
Power supply ...30 V DC/AC (version -24)
or 90...265 VAC (version -230)
Power consumption < 2 VA
Digital interface UART
Relay outputs 2 × SPDT, max 5 A, 30 VDC / 250 VAC
Alarm signalling Buzzer 2 kHz, 85 dB; red LED
LEDs green/red (operation/fault), red (gas alarm)
Enclosure ABS plastic with ventilation slots, wall-mount,
protection class IP20
Dimensions 85 × 85 × 37 mm
Electromagnetic
compatibility according to 20 4/30/EU, 20 4/35/EU and EN6 32 -
standard requirements
Evikon MCI OÜ Teaduspargi 7, Tartu [email protected]
Tel [phone] Estonia www.evikon.eu
Ammonia Detector
E2610 NH3
User manual