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 (R17), as a
cleaning and antimicrobal agent.
Ammonia is also produced naturally from decomposition of organic matter,
including plants and animals.
Chemical formula
NH
3
Molar weight
17
Relative gas density (to air)
0,59
Conversion
1 ppm = 0.70 mg/m
3
Boiling point
-33.34 °C
Low explosive limit (LEL), % vol in air
15
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
14 mg/m
3
/20 ppm
STEL
36 mg/m
3
/50 ppm
Conversion of ppm to mg/m
3
is calculated for 25°C and 1 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 E2610-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 E2610-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.
E2610-NH3_UM_EN
Rev 19.11.2019
Specifications
Sensor type
metal oxide semiconductor
electrochemical cell
Sampling method
diffusion
Detection range
0...100 ppm
0...300 ppm
(up to 1000 ppm)
0...100 ppm
0...500 ppm
(up to 1000 ppm)
Default alarm setpoints
(release-LOW-HIGH)
18 - 25 - 35 ppm
25 - 35 - 150 ppm
18 - 25 - 35 ppm
25 - 35 - 300 ppm
Resolution/digital unit
1 ppm
Sensor lifetime
> 5 years
>2 years
Calibration interval
12 months
6 months
Operating conditions
15...95% RH without condensation, 0,9...1,1 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
-10...+50 °C
Warm-up time
up to 1 minute, depending on unpowered period and
atmosphere
Power supply
11...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 2014/30/EU, 2014/35/EU and EN61321-1
standard requirements
Evikon MCI OÜ
Teaduspargi 7, Tartu
Tel +372 733 6310
50411 Estonia
www.evikon.eu
Ammonia Detector
E2610-NH3
User manual
