DEGA NS III LCD User manual

INSTRUCTION
MANUAL
Gas Transmitter
DEGA NS III
Reproduction of this manual, or any part thereof, in any form, without the prior permission of DEGA.CZ
s.r.o. is prohibited
DEGA CZ s.r.o. reserves the ri ht to alter the specifications of the hardware and software described in
this manual at any time and without prior notice
DEGA CZ s.r.o. bears no liable for any dama e resultin from use of this device

2
Content
For your safety .................................................................................................................................................................................. 2
Technical data and information ........................................................................................................................................................ 3
Operational conditions ..................................................................................................................................................................... 4
Terminolo y ...................................................................................................................................................................................... 4
Product desciption ............................................................................................................................................................................ 5
Instalation, assembly and disassembly of the transmitter ............................................................................................................... 6
1. Assembly of the transmitter ................................................................................................................................................. 6
2. Replacement of the sensor module ...................................................................................................................................... 6
3. Replacement of the battery .................................................................................................................................................. 6
4. Connectin the transmitter via current loop to the controler DEGA UPA II/DEGA UPA III .................................................. 7
5. Connectin the sensor via RS485 to the controller DEGA UKA III/DEGA UPA III/DEGA UDA III ........................................... 7
6. Installation of wirin for RS485 ............................................................................................................................................. 7
7. Settin the RS485 adress of the transmitter......................................................................................................................... 7
8. Terminatin resistor .............................................................................................................................................................. 7
9. Communication protocol switch DEGA/MODBUS ................................................................................................................ 7
Transmitter functions ....................................................................................................................................................................... 8
1. Turnin on the transmitter ................................................................................................................................................... 8
2. Gas detection ........................................................................................................................................................................ 8
3. Malfunction ........................................................................................................................................................................... 8
4. Monitorin the calibration periods ....................................................................................................................................... 8
5. Readin the record of measured concentrations and alarms .............................................................................................. 8
Operation, maintenance, inspection and service of the transmitter ............................................................................................... 8
1. Usa e limits ........................................................................................................................................................................... 8
2. Operation .............................................................................................................................................................................. 9
3. Operation/Maintenance ....................................................................................................................................................... 9
Accessories and basic types of transmitters ..................................................................................................................................... 9
1. Calibration adapter/connection to the as pump DEGA GAS INLET .................................................................................... 9
2. Cover a ainst splashin water DEGA WATER CAP ................................................................................................................ 9
3. Funnel for as collection DEGA COLLECT CAP .................................................................................................................... 10
4. Additional Ex „d“ cable land .............................................................................................................................................. 10
Basic types of transmitters ............................................................................................................................................................. 10
1. Transmitters with a catalytic sensor NSx-CL III ................................................................................................................... 10
2. Transmitters with an electrochemical sensor NSx-EL III ..................................................................................................... 10
3. Transmitters with an infrared sensor NSx-IL III................................................................................................................... 12
4. Transmitters with a semiconductor sensor NSx-SL III ......................................................................................................... 13
5. Transmitters with a PID sensor NSx-PL III PID ..................................................................................................................... 13
Add-on modules .............................................................................................................................................................................. 14
Attachments .................................................................................................................................................................................... 14
1. Chart for settin the transmitter adress ............................................................................................................................. 14
2. Si nalization transmitted by the current loop 4-20 mA ..................................................................................................... 14
3. Conversion between volume concentration and lower explosive limit of methane ......................................................... 14
4. Packa e contents ................................................................................................................................................................ 14
General warranty terms and conditions ......................................................................................................................................... 15
For your safety
Beware of static electricity
Electronic components are sensitive to static electricity. Do not touch them directly - they may et daman ed.
T e device is intended to be installed by a trained person
The product is desi ned for installation only by a certified technician. The manufacturer is not liable for dama es resultin
from incorrect or improper handlin .
In case of malfunction, immediately unplug from t e power supply
If you notice an unusual smell or smoke emittin from the product, unplu it from the power supply, battery backup and all
other attachments. Continued operation could result in injury or property dama e. After disconnectin , have the device
inspected at an authorized dealer or manufacturer.

3
Do not open t e transmitter and do not replace t e sensors in t e transmitter in a potentially explosive atmosp ere
Openin the cover and replacin the sensor in the transmitter in a potentially explosive atmoshpere can cause an explosion. If
service is necessary, first unplu the device from the power supply. After that the device may be disassembled and the
sensors may be replaced (certified partner or manufacturer).
Do not disassemble t e product and ensure against it's contact wit water
Contact with internal components of the product may cause an electric shock. In case of any malfuction entrust the servicin
of the product exclusively to a certified service centre. Contact with water can create a short circuit in the product and
consequent daman e to property or personal injury.
Use appropriate cable types
To ensure compliance with the parameters of the product, only use cable types recommended in this uide.
Dispose of used products and trasmitter sensors wit respect to t e environment
Transmitter sensors contain hazardous substances. Dispose of them in accordance with the current le islation on
environmental protection.
Use t e transmitter only wit t e appropriate certified DEGA products
The device is certified as functionally and technically qualified only with ori inal "DEGA" accessories. In case of usin the
device with any other products the manufacturer is not liable for any dama es that may occur.
Undertake regular functional c ecks and calibrations of t e transmitter
Perform re ular "CALIBRATION" (settin the detection limits, checkin the responsivness of the sensor, checkin the
functionality of the transmitter) and "OPERATIONAL AND FUNCTIONAL CHECKS" of the entire detenction system (sensor
excitation with subsequent control of optical and audible alarms, tri erin fans, shutdown technolo y, etc.). Perform
calibration and operational and functional checks only at certified service centers with a valid certificate of competence or the
manufacturer.
Warnin : The transmitter automatically checks it's calibration period - the period of validity of it's calibration. After 12 months since the
last calibration (Max. calibration period) the transmitter will transmit this fact to the host system. The transmitter must be calibrated
immediately at a certified service center with a valid certificate of competance or the manufacturer. See section "Monitorin the
calibration peridos".
Tec nical data and information
Supply volta e: 24 V nominal, operational ran e 8-30 V
Cable connections via 4-20 mA: shielded cable 3 x 1 mm (max. 1200 m)
shielded cable 3 x 1,5 mm (max. 2400 m)
Cable connections via RS485: shielded cable 4 x 0,8 mm (max. 400 m) - see section “ instalation of cabelin
for RS485“
Output: 4 - 20 mA
RS485 - protocol DEGA, or MODBUS
Standarts: EN60079-0:2012, IEC60079-0:2011
EN60079-1:2014, IEC60079-1:2014
Markin accordin to ATEX: II 2 G Ex db IIB+H2 T6 Gb Tamb:-40°C-+60°C
Markin accordin to IECEx: Ex db IIB+H2 T6 Gb Tamb:-40°C-+60°C
II – eqiupment roup - non-minin environment 2 G - eqiupment cate ory - explosive atmospheres - zone 1
Ex d - type of protection - flameproof enclosure „d“ IIB+H2 - as roup
T6 – temperature class Gb - eqiupment protection level EPL Tamb – ambient temperature
Dimensions without cable lands: 150 x 170 x 65 mm (WxHxD)
Wei ht: 2,1 k
Capacity of the internal memory of history: 44 days at 60 s recordin interval
Interval record stora e memory: 60 s (adjustable ran e 1-255 s)
Dead band 5 % of ran e

4
Consumption/input at 24V (output RS485)
Warm
-
Up time
DEGA NSx
-
EL III
25 mA/0,6 W
DEGA NSx
-
EL I
I
I
max. 180 s
DEGA NSx
-
CL III
70 mA/1,7 W
DEGA NSx
-
CL II
I
max. 30 s
DEGA NSx
-
I
L III
50 m
A
/1,2 W
DEGA NSx
-
IL II
I
max. 15 s
DEGA NSx
-
SL III
DEGA NSx-PL III PID
70 mA/1,7 W
154 mA/3,4 W
DEGA NSx
-
SL II
I
DEGA NSx-PL III PID
max. 180 s
max. 15 s
Consumption/input at 24V (output 4
-
20
mA)
Time to stabilize (>5day wit out power
)
DEGA NSx
-
EL III
45 mA/1,1 W
DEGA NSx
-
EL
III
1
-
72 h
DEGA NSx
-
CL III
90 mA/2,2 W
DEGA NSx
-
CL II
I
max. 1 h
DEGA NSx
-
I
L III
70 mA/1,7 W
DEGA NSx
-
IL II
I
max. 30 min
DEGA NSx
-
SL III
DEGA NSx-PL III PID
90 mA/2,2 W
154 mA/3,7 W
DEGA NSx
-
S
L I
I
I
DEGA NSx-PL III PID
max. 5 h
max. 30 min
Response time (T90)
Sensor lifetime in a clean environment
DEGA NSx
-
EL II
I
max. 180 s
-
based on sensor type
DEGA NSx
-
EL II
I
2 years
DEGA NSx
-
CL II
I
max. 15 s
DEGA NSx
-
CL II
I
2 years
DEGA NSx
-
IL II
I
max. 15 s
DEGA NSx
-
IL II
I
5 + yea
r
s
DEGA NSx
-
SL II
I
DEGA NSx-PL III PID
max. 30 s
max. 15 s
DEGA NSx
-
SL II
I
DEGA NSx-PL III PID
2 years
1 year
Operational conditions
Ambient temperature: -40 °C to +60 °C
Relative humidity: 0-95 % RH
Air pressure: 80-120 kPa
Flow of ambient air: max. 2 m/s - flow directly to the sensor in not allowed
Protection level with a cover: IP 54, with a DEGA WATER CAP IP 66 cover
Location: BE3N2 - explosive atmoshpheres - zone 1 (2 G)
Terminology
T e marking system for sensors DEGA NSx-yL III:
Gas sensor DEGA NSx-yL III
Series of detectors in potentially explosive atmospheres
Type of detected as
Sensor type with linear output
Third eneration product with new DEGA desi n
DEGA NSx-EL III wit an electroc emical sensor
They operate on the principle of chan e of electrical parameters on the electrodes stored in electrolyte, due to
oxidation/reduction reactions of the detected as on it's surface. These sensors have ood selectivity and the ability to detect
very low concentrations of toxic ases.
DEGA NSx-CL III wit a catalytic sensor (Pelistor)
They operate on the principle of catalytic combustion - as concentration is measured based on the amount of heat released
in a controlled combustion reaction. The reaction is supported by a suitable temperature and the pressence of a catalyst.
These sensors can be used to detect a broad ran e of flammable ases. The sensors are characterized by fast response,a lon
lifetime and hi h stability. A minimum of 10% of Oxy en in the air is required for it's proper function.
DEGA NSx-IL III wit an infrared sensor (NDIR)
Top quality scannin method. They operate on the principle of infrared spectroscopy. The sensors have excellent selecivity in
or anic matter, do not require any oxy en in the atmoshpere and are resistant to catalyst poisons (sulfur and silicon
compounds) which cause a chan e of sensitivity of catalytic sensors. The sensors are characterized by hi h stability and a lon
lifetime.
DEGA NSx-SL III wit a semiconductor sensor
They operate on the principle of chan es in electrical conductivity of semiconductors by chan in the concentration of the
detected as. Their advata e is a lon lifetime in a clean environment and a wide ran e of different types of ases and vapors.
Their disadvata e is their low selectivity - the sensor lar ly responds to other ases for which it is not calibrated.

5
DEGA NSx-PL III PID wit a PID – p otoionization sensor
Typical photoionization detectors measure volatile or anic compounds and other ases in concentrations from sub parts per
billion to 10 000 parts per million (ppm). The photoionization detector is an efficient and inexpensive detector for many as
and vapor analytes. PIDs produce instantaneous readin s, operate continuously, and are commonly used as detectors for as
chromato raphy or as hand-held portable instruments. Hand-held, battery-operated versions are widely used in military,
industrial, and confined workin facilities for health and safety. Their primary use is for monitorin possible worker exposure
to volatile or anic compounds (VOCs) such as solvents, fuels, de reasers, plastics & their precursors, heat transfer fluids,
lubricants, etc. durin manufacturin processes and waste handlin .
Product desciption
Sensor cover
Ex „d“ cable land OptionalEx „d“
cable land
Body of the removable
sensor
Sensor bottom Body of the removable
sensor
Ex „d“ cable land
Mountin holes PCB electronics Ex „d“ cable land Removable Ex „d“ cable land
Body of the
removable sensor
Power supply terminal
block+24V DC
Power supply
terminal block GND Si nal terminal block 4-20 mA
Jumper connector
of the terminal
resistor RS485
Jumper connector of the
communication protocol
(DEGA/MODBUS)
Battery CR2032 DIP switch for the RS485 adress
Pro rammin
connector
LCD display connector Status LED Calibration jumpers
22
21
20
19
18
17
16
15
6
5
8
7
4
3
2
1
6
5
4
3
2
1
7

6
Instalation, assembly and disassembly of t e transmitter
Before assemblin , read the valid instalation standarts EN 60079-29-2 (Selection, instalation, use and maintenance of
detectors for combustible ases and oxy en) and EN 45544-4 (Guildelines for the selection, installation, use and maintenance
of detectors of toxic substances).
In explosive environments the electrical installation must be performed accordin to DIN EN 60079.14 (Electrical instalation in
hazardours areas)
Secure that the sensor is reachable by air. The transmitter must be in a free area with no obstacles in its way (furniture etc.)
Ensure that the input of the sensor cannot be polluted by layers of dust or other contamination.
1. Assembly of t e transmitter
The transmitter consists of four parts - the body of the transmitter, the removable sensor and Ex „d“ cable lands.
Transmitter assembly procedure is as follows:
a) Disassemble the transmitter with the four hexa on socket screws 5 mm
b) Disconnect the LCD motherboards
c) Mount the transmitter on a flat surface with four 6 mm fasteners in hei ht above the floor with the as entrance
facin downwards, as specified by the detected substance
d) Direct the cable trou h the cable land
e) Connect the cabelin to the terminal block. When usin the second Ex „d“ cable land, dismout the Ex „d“ blind
plu . It is allowed to use only Ex „d“ cable lands with M20x1,5 threads
f) Connect the LCD
) Assemble the transmitter with the four hexa on sockets scews 5 mm
h) Groun the enclosure by a CUPAL washer a fan washer and a M4 screw
i) The roundin point is between the cable lands
2. Replacement of the sensor module
This activity must not be pe
rformed when the sensor is ener ized.
In case of need to replace the sensor module with a new piece, unscrew and remove
the cover. Disconnect the sensor module cable from the PCB (1), loosen the sink screw
(2) and unscrew the steel cylinder with the sensor (3). Screw the new sensor module,
retain it with the sink screw and connect the cable to the PCB. Finally, mount the cover
and connect to the power supply.
3. Replacement of the battery
The battery lifetime in the sensor is approximately 5 years. After
this time some functions of the
detector may not work properly. Remove the battery from the holder and replace it with one of the
recommended types. Replacin the battery in the transmitter, which is not connected to the power,
will erase the internal clock.
Panasonic BR2032.

7
4. Connecting the transmitter via current loop to the controler DEG UP II/DEG UP III
Connect one transmitter to each channel of the controler as shown in the picture below
5. Connecting the sensor via RS485 to the controller DEG UK III/DEG UP III/DEG UD III
6. Installation of wiring for RS485
Wirin must be installed usin bus topolo y and in compliance with the RS485 policy.
The maximum number of connected transmitters per controller channel is 16 (may be less dependin on the confi uration of
the controller), while the total len th of the controller (electrical distance between the controller and the last transmitter)
should not exceed 400 meters.
Selecting t e appropriate type of cable depends on t e fire report and t e protocol for determining external influences.
7. Setting the RS485 adress of the transmitter
Each transmitter must have a unique adress within the entire bus, otherw
i
s
e
there will be
communication collisions and malfunctions.
The transmitter adress can either be set internally usin the De aConfi pro ram or usin the DIP
switch on the PCB.
If the position 6 (labeled ADD) is in the ON position, then the adress accordin to the settin of pins 1-5
is considered. Otherwise the adress set in De aConfi is considered.
The adress can be set from ran e 1-31 usin binary values. A table with DIP settin s for individual
adresses is listed in the attachment "Chart for settin the transmitter adress"
8. Terminating resistor
Accordin to the RS485 specifications, the last device on the bus must be endin with a terminatin
resistor 120R. Plu a jumper on the JP2 connector of the last device on the bus to include the 120R
terminatin resistor. In the default confi uaration, the jumper connector is not plu ed.
9. Communication protocol switch DEG /MODBUS
Plu in a jumper in the JP1 connector will swtich f
r
om the DEGA communication protocol to the
MODBUS communication protocol.

8
Transmitter functions
The detector's motherboard is equipped by status LEDs, which help in detectin problems durin the installation.
LED „POW“ shines at correct power
LED „TxD“ flashes when transmittin a packet via RS485
LED „RxD“ flashes when a packet is correctly recieved via RS485
LED „ERR“ shines/flashes in case of malfunction or substandart situations
1. Turning on the transmitter
After turnin on the power the LED "POW" starts shinin and the LED "ERR" starts flashin , indicatin a formin sequence of
the sensor and automatic testin procedures, which can take up to 180 s dependin on the sensor used. The output of the
current loop is 1 mA. Durin this sequence, testin of internal electronics and stabilization of the sensor in order to eliminate
false alarms after turnin on, is takin place. At this time, the display only shows the time to the be innin of the
measurement loop.
After completion of the formation, a 4 mA current be ins to flow on the output of the current loop and the transmitter starts
workin accordin to it's settin s.
2. Gas detection
The transmitter continuously measures the detected as concentration in the atmoshpere and converts it's current value into
a 4-20 mA si nal or transmits it's value to the evaluation unit via DEGA/MOBUS protocol.
3. Malfunction
If a malfunction of electronics or the sensor is detected durin operation, the transmitters starts transmittin via a 0,5 mA
current loop. On the PCB this state is indicated by the yellow LED "ERR"
4. Monitoring the calibration periods
The transmitter continuously checks the calibration validity of the connected sensor.
After 12 months since the last calibration (Max. calibration interval) the LED "ERR" starts flashin . The connected sensor must
be calibrated immediately. The transmitter will transmit the information about the endin calibration via current loop. The
transmission will be the followin : 10 s transmittin a 4-20 mA si nal informin about the actual as concentration followin a
1 second interval of 2 mA current.
5. Reading the record of measured concentrations and alarms
The transmitter periodically after 60 s stores the current detected concentration into it's internal memory. The internal
memory retains data from the last 64260 measurements (cca 44 days). In order to read this information, the pro ram
De aConfi is required. Refer to the De aConfi pro ram instruction.
Operation, maintenance, inspection and service of t e transmitter
1. Usage limits
To maintain proper operation of the transmitter it is neccesery to respect the fact, that step chan es of humidity,
condensation or rapid chan es of pressure can cause incorrect indication of the measured value. Each sensin technolo y is
suited for different methods of application, which is described below. All sensors are characterized by a smaller or lar er cross-
sensitivity to other ases than those which are set. Therefore before processin project documentation we recommend to
have the air in the deployment area of the detection system analyzed.
a) catalytic sensors: Trace amount of vapors of silicon compounds and sulfur compounds cause a permanent loss of sensitivity,
which requires recalibration or replacement of the sensor. Lon term crossin of the measurin ran e causes a decrease in
sensitivity. In case of an atmoshpere havin an oxy en content of less than 17%, there will be an underestimaton of the
measured value. In case of an atmoshpere havin an oxy en content of more than 25%, there will be an overestimation of the
measured value.
b) electroc emical sensors: Constant exposure to toxic ases or short-term exposure to ases, which reatly exceed the
maximum ran e of the sensor, can dama e the electrochemical sensor, which requires recalibration or replacement. Hi h

9
temperature alon with low relative humidity have a ne ative effect on the sensor's lifetime. In case of an atmoshpere havin
an oxy en content of less than 1% for lon er than 1 hour, there will be an underestimation of the measured value.
c) infrared sensors: Vapor acids and alkalis can etch the optical system and distort the measurements. A check or a calibration
may be neccesery.
d) semiconductor sensors: Short-term exposure to ases or vapors of or anic solvents, which reatly exceed the maximum
ran e of the sensor, may dama e the sensor and a recalibration or replacement may be required. In case of an atmoshpere
havin na oxy en content of less than 18%, there will be an underestimation of the measured value.
e) p otoionization sensors: the UV lamp or sensor must be replaced re ularly, its clo in may cause loss of si nal.
2. Operation
To maintain proper operation of the transmitter it is neccesery to respect the fact, that the presence of certain concentrations
of ases or vapors, other than those for which the sensor is set, can cause an alarm, even if the concentration of the as does
not exceed the set level. Given the ran e of disturbin ases or vapors (diluents, exhaust ases, vapors of or anic substances,
disinfectants, etc.) a enerally allowable concentration of interferin ases can not be determined. Data on cross-sensitivity to
certail ases are included at the apporpriate sensors. Therefore before processin project documentation we recommend to
have the air in the deployment area of the detection system analyzed .
3. Operation/Maintenance
In case of contamination the surface can be cleaned with a sli htly moistened cloth.
The seonsors have a different lifetime dependin on the sensin technolo y used, and environmental conditions.
Characteristics of the sensors vary over time. Therefore it is required to perform re ular checks and calibrations, which can be
done in two ways:
a) 1 x every six mont s carry out a „calibration“ and functional control - adjust the sesitivity of the sensor usin
calibration as and check the functionality of the system. The exact interval depends on the purity of the environment,
required accuracy and the occurrance of disturbin ases in the atmoshpere.
b) 1 x every twelve mont s carry out a „calibration“ - adjust the sesitivity of the sensor usin calibration as and check the
functionality of the system. The exact interval depends on the purity of the environment, required accuracy and the
occurrance of disturbin ases in the atmoshpere. Also carry out a „functional control" 1 x every t ree mont s -
checkin the function of the entire detection system usin a test as, which does not exceed the ran e of the sensor.
We recommend usin as intended for laboratory use.
For t e „functional control“ do not use means for testing fire alarm detectors!
Perform calibration only at certified service centers with a valid certificate of competence or the manufacturer.
For t e Czec Republic only DEGA CZ s.r.o.
Accessories and basic types of transmitters
1. Calibration adapter/connection to the gas pump DEG G S INLET
2. Cover against splashing water DEG W TER C P

10
3. Funnel for gas collection DEG COLLECT C P
4. dditional Ex „d“ cable gland
M20x1,5
Basic types of transmitters
1. Transmitters with a catalytic sensor NSx-CL III
Product code Transmitter type Detected as Measurement
ran e
Measurement of
current loop
(4-20 mA)
Resolution Calibration as
40100069
DEGA NSM-CL 100 III
Methane (CH4)
Natural as
CNG
0–100 % LEL 0-20 % LEL 0,1 % LEL Methane 0,88 %
40100070 DEGA NSP-CL 100 III
Butane (C4H10)
Propan-Butane
LPG
0–100 % LEL 0-20 % LEL 0,1 % LEL Butane 0,32 %
40100071 DEGA NSH-CL 100 III
Hydro en (H2) 0–100 % LEL 0-20 % LEL 0,1 % LEL Hydro en 0,8 %
40100068 DEGA NSHC-CL 100 III
Other
flammable and
combustible
ases and
vapors
accordin to
the selectivity
of the sensor
0–100 % LEL 0-20 % LEL 0,1 % LEL Accordin to the selectivity of the
sensor
2. Transmitters with an electrochemical sensor NSx-EL III
Product code Transmitter type Detected as Measurement
ran e
Measurement of
current loop
(4-20 mA)
Resolution Calibration as
40100022
DEGA NSCO-EL 1000 III Carbon
Monoxide (CO) 0–1000 ppm 0-130 ppm 1 ppm Carbon Monoxide 450 ppm
40100019 DEGA NSCO-EL 200 III
Carbon
Monoxide (CO) 0–200 ppm 0-200 ppm 0,1 ppm Carbon Monoxide 130 ppm
40100020 DEGA NBCO-EL A500 III
Carbon
Monoxide (CO) 0–500 ppm 0-500 ppm 0,1 ppm Carbon Monoxide 130 ppm
40100021 DEGA NSCO-EL 2000 III
Carbon
Monoxide (CO) 0- A500 ppm 0-500 ppm 1 ppm Carbon Monoxide 130 ppm
40100023 DEGA NSA-EL 100 III
Carbon
Monoxide (CO) 0–2000 ppm 0-2000 ppm 1 ppm Ammonia 100 ppm
40100039 DEGA NSA-EL 1000 III
Ammonia
(NH3) 0-100 ppm 0-50 ppm 0,1 ppm
Ammonia
100 ppm
40100041
DEGA NSA-EL 10000 III
Ammonia
(NH3)
0-1000 ppm 0-300 ppm 1 ppm Ammonia
100 ppm
40100044 DEGA NSA-EL 500 III
Ammonia
(NH3)
0-10000 ppm 0-10000 ppm 1 ppm Ammonia
100 ppm
40100040 DEGA NSA-EL 5000 III
Ammonia
(NH3)
0-500 ppm
0-500 ppm
1 ppm Ammonia
1000 ppm
40100043 DEGA NSA-EL 2000 III
Ammonia
(NH3)
0-5000 ppm
0-5000 ppm
1 ppm Ammonia
1000 ppm