DEGA NB L III LCD RE Series User manual

INSTRUCTION
MANUAL
Gas Detection Transmitter
DEGA NBx-yL III LCD RE
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 right 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 liability for any damage resulting from use of this device.

2
Content
For your safety ..................................................................................................................................................................................2
Technical data and information........................................................................................................................................................3
Operational and storage conditions .................................................................................................................................................3
Terminology ......................................................................................................................................................................................4
Product description...........................................................................................................................................................................4
Assembly and disassembly of the transmitter.............................................................................. Chyba! Záložka není definována.
1. Assembly of the transmitter ............................................................................................. Chyba! Záložka není definována.
2. Replacement of the sensor module.................................................................................. Chyba! Záložka není definována.
3. Connecting the transmitter - 230V AC..................................................................................................................................5
Transmitter functions ................................................................................................................... Chyba! Záložka není definována.
1. Turning on the transmitter ............................................................................................... Chyba! Záložka není definována.
2. Gas detection .................................................................................................................... Chyba! Záložka není definována.
3. Malfunction....................................................................................................................... Chyba! Záložka není definována.
4. Monitoring the calibration periods................................................................................... Chyba! Záložka není definována.
5. Reading the records of measured concentrations and alarms......................................... Chyba! Záložka není definována.
Transmitter controls ..................................................................................................................... Chyba! Záložka není definována.
6. History menu „HIST“ .............................................................................................................................................................8
7. Information menu „INF“ ................................................................................................... Chyba! Záložka není definována.
8. Settings menu „SET“ ......................................................................................................... Chyba! Záložka není definována.
9. Test menu „TEST“ ...............................................................................................................................................................11
Operation and maintenance of the transmitter.............................................................................................................................11
1. Usage limits....................................................................................................................... Chyba! Záložka není definována.
2. Operation.......................................................................................................................... Chyba! Záložka není definována.
3. Operation/Maintenance ................................................................................................... Chyba! Záložka není definována.
Accessories.................................................................................................................................... Chyba! Záložka není definována.
1. Additional bushing DEGA BUSHING for NBxIII.................................................................. Chyba! Záložka není definována.
Basic type of transmitters............................................................................................................. Chyba! Záložka není definována.
1. Transmitters with a catalytic sensor NBx-CL III LCD RE ......................................................................................................12
2. Transmitters with an electrochemical sensor NBx-EL III LCD RE ........................................................................................13
3. Transmitters with an infrared sensor NBx-IL III LCD RE ......................................................................................................14
4. Transmitters with a semiconductor sensor NBx-SL III LCD RE ............................................................................................14
5. Transmitters with PID sensor NBx-PL III PID LCD RE...........................................................................................................16
General warranty terms and conditions....................................................................................... Chyba! Záložka není definována.
For your safety
The transmitter must be mounted with the sensor module downwards
To maintain IP protection, the transmitter must be mounted with the sensor module downwards
Beware of static electricity
Electronic components are sensitive to static electricity. Do not touch them directly - they may get damaged.
The device is intended to be installed by a trained person
The product is designed only for installation by a certified technician. The manufacturer is not liable for damages resulting
from incorrect or improper handling.
In case of malfunction, immediately unplug from the power supply
If you notice an unusual smell or smoke emitting from the product, unplug it from the power supply, battery backup and all
other attachments. Continued operation could result in injury or property damage.
The transmitter is intended for use exclusively in a non-explosive environment
Transmitters DEGA NBx-yL II (ZONE 2) and NBx-yL III (ZONE 1) are designed for use in potentially explosive environment.
Do not disassemble the product and ensure against the contact of its internal components with water
Contact of internal components of the product with water may cause an electric shock. In case of any malfunction entrust the
servicing of the product exclusively to a certified service centre. Contact with water can create a short circuit in the product
and consequent damage to property or personal injury.

3
Use appropriate cable types
To ensure compliance with the parameters of the product, only use the recommended cable types described in this manual.
Dispose of used products and transmitter sensors with respect to the environment
Transmitter sensors contain hazardous substances. Dispose of them in accordance with the current legislation on
environmental protection.
Use the transmitter only with the appropriate certified DEGA products
The device is certified as functionally and technically qualified only with original "DEGA" accessories. In case of using the
device with any other products the manufacturer is not liable for any damages that may occur.
Undertake regular functional checks and calibrations of the transmitter
Perform regular "CALIBRATION" (setting the detection limits, checking the responsiveness of the sensor, checking the
functionality of the transmitter) and "OPERATIONAL AND FUNCTIONAL CHECKS" of the entire detection system (sensor
excitation with subsequent control of optical and audible alarms, triggering fans, shutdown technology, etc.). Perform
calibration and operational and functional checks only at certified service centers with a valid certificate of competence or at
the manufacturer.
Warning: 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 competence or by the manufacturer. See section "Monitoring the
calibration periods".
Technical data and information
Supply voltage: 230 V/ AC
Wire diameter range: 0,08-2,5mm2– wire, stranded wire 0,25-1,5mm2– stranded wire with ferrule
Output: 2x potential free relay
Dimensions without bushings 110x100x50 mm (WxHxD)
Weight: 0,3 kg
Input
Warm-Up time
DEGA NBx-EL III LCD RE
1,1 W
DEGA NBx-EL III LCD RE
max. 180 s
DEGA NBx-CL III LCD RE
2,2 W
DEGA NBx-CL III LCD RE
max. 30 s
DEGA NBx-IL III LCD RE
1,7 W
DEGA NBx-IL III LCD RE
max. 15 s
DEGA NBx-SL III LCD RE
1,7 W
DEGA NBx-SL III LCD RE
max. 180 s
DEGA NBx-PL III PID LCD RE
2,2 W
DEGA NBx-PL III LCD RE PID
max. 15 s
Consumption/input in the ALARM mode
Time to stabilize (>5 days without power)
DEGA NBx-EL III LCD RE
2,2 W
DEGA NBx-EL III LCD RE
Up to several hours -
based on sensor
type
DEGA NBx-CL III LCD RE
3,3 W
DEGA NBx-CL III LCD RE
max. 1 h
DEGA NBx-IL III LCD RE
2,8 W
DEGA NBx-IL III LCD RE
max. 30 min
DEGA NBx-SL III LCD RE
2,8 W
DEGA NBx-SL III LCD RE
max. 1 h
DEGA NBx-PL III LCD RE PID
3,3 W
DEGA NBx-PL III LCD RE PID
max. 30 min
Response time (T90)
Sensor lifetime in a clean environment
DEGA NBx-EL III LCD RE
max. 180 s - based on sensor type
DEGA NBx-EL III LCD RE
2 years
DEGA NBx-CL III LCD RE
max. 30 s
DEGA NBx-CL III LCD RE
2 years
DEGA NBx-IL III LCD RE
max. 30 s
DEGA NBx-IL III LCD RE
5 years
DEGA NBx-SL III LCD RE
max. 30 s
DEGA NBx-SL III LCD RE
2 years
DEGA NBx-PL III LCD RE PID
max. 30 s
DEGA NBx-PL III LCD RE PID
2 years
Operational and storage conditions
Ambient temperature: -20°C to +60 °C (electrochemical, semiconductor and catalytic sensors) -20°C až +50°C
(infrared sensors)
Relative humidity: 10-90 % RH
Air pressure: 86 - 108 kPa
Ambient air flow: max. 2 m/s - flow directly to the sensor in not allowed
IP rating: IP 54
Location: BE1 - non-explosive atmospheres

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Terminology
The marking system for sensors DEGA NBx-yL III LCD RE:
Gas sensor DEGA NBx-yL III LCD RE
Series of detectors for non-explosive atmospheres
Type of gas detected
Sensor typ with linear output
Third generation product with DEGA design
DEGA NBx-EL III LCD RE with an electrochemical sensor
They operate on the principle of change of electrical parameters on the electrodes stored in electrolyte, due to oxidation or
reduction reactions of the detected gas on its surface. These sensors have good selectivity and the ability to detect very low
concentrations of toxic gases.
DEGA NBx-CL III LCD RE with a catalytic sensor (Pelistor)
They operate on the principle of catalytic combustion - gas 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 presence of a catalyst. These
sensors can be used to detect a broad range of flammable gases. The sensors are characterized by fast response, long lifetime
and high stability. A minimum of 10 % of Oxygen in the air is required for their proper function.
DEGA NBx-IL III LCD RE with an infrared sensor (NDIR)
Top quality scanning method. They operate on the principle of infrared spectroscopy. The sensors have excellent selectivity in
organic matter, do not require any oxygen in the atmosphere and are resistant to catalyst poisons (sulfur and silicon
compounds) which cause a change of sensitivity of catalytic sensors. The sensors are also characterized by high stability and a
long lifetime.
DEGA NBx-SL III LCD RE with a semiconductor sensor
The cheapest scanning method. The sensors operate on the principle of changes in electrical conductivity of semiconductors
by changing the concentration of the detected gas. Their advantage is a long lifetime in a clean environment and a wide range
of different types of gases and vapors. Their disadvantage is their low selectivity - the sensor largely responds to other gases,
for which it is not calibrated.
DEGA NBx-PL III LCD RE PID with a photoionization sensor
Sensitive scanning method for detection of a wide range of VOC - volatile organic compounds. The sensor does not selectively
detect all VOCs in the air at concentrations in ppm.
Product description
Bushings
Allen screws 3mm
Magnetic control
„BACK“
Magnetic control
„FRONT“
Magnetic control
„ENTER/EXIT“
Sensor module
PCB with
electronics
PCB with electronics
8
7
6
5
4
3
1
2

5
Power supply
terminal block 230V
- L
Power supply terminal
block230V - N
Relay outputs
terminal block
Connector for service
operations
Installation, assembly and disassembly of the transmitter
Before assembling, read the valid installation standards ČSN EN 60079-29-2 (Selection, installation, use and maintenance of
detectors for combustible gases and oxygen) and ČSN EN 45544-4 (Guidelines for the selection, installation, use and
maintenance of detectors of toxic substances).
Make certain that the sensor input is accessible by air. The transmitter must be in an open area with no obstacles in its way
(furniture etc.) Ensure that the input of the sensor is not be polluted by layers of dust or otherwise contaminated. To maintain
IP protection, the transmitter must be mounted with the sensor down.
1. Assembly of the transmitter
The transmitter consists of four parts - the body of the transmitter, the removable sensor and bushings.
Transmitter assembly procedure is to be performed in the following steps:
a) Disassemble the transmitter using four hexagon socket 3mm screws
b) Use a screwdriver to break out holes for the bushings
c) Mount the transmitter on a flat surface using three 6mm fasteners in a height above the floor with the gas
entrance facing downwards, according to the specifications of the detected substance
d) Direct the cables trough the bushings
e) Connect the wiring to the terminal block of the transmitter
f) Assemble the transmitter using four hexagon socket 4mm screws
2. Replacement of the sensor module
This activity must not be performed when the sensor is energized.
Should it be necessary to replace the sensor module with a new piece, unscrew and remove
the cover. Na senzorovém modulu odšroubujeme dvojici šroubů s vnitřním šestihranem
3mm a senzorový modul zapáčením zevnitř nástrojem vyjmeme. Opatrně nasuneme nový
modul - nesmí dojít k zohýbání pinů. Zajistíme dvojicí šroubů a nasuneme víko, které
zajistíme.
3. Connecting the transmitter - 230V AC
1
2
3
4

6
Transmitter functions
The detector's motherboard is equipped by status LEDs, which help with detecting problems during the installation.
Green LED shines at correct power supply
Yellow LED flashes during sensor warm-up
Red LED shines/flashes in case of malfunction, alarm or substandard situations
1. Turning on the transmitter
After turning on the power the LED "POW" lights up and the LED "ERR" starts flashing, indicating a forming sequence of the
sensor and automatic testing procedures, which can take up to 180s depending on the sensor used. The output voltage of the
current loop is 1mA. During this sequence, testing of internal electronics and stabilization of the sensor in order to eliminate
false alarms after turning on take place. At this time, the display only shows the time until the beginning of the measurement
loop.
After completion of the forming, a 4mA current begins to flow on the output of the current loop and the transmitter starts
working according to its settings.
2. Gas detection
The transmitter continuously measures the detected gas concentration in the atmosphere and converts its current value into a
4-20 mA signal or transmits its value to the evaluation unit via DEGA/MOBUS protocol. The current measured concentration
and alarm status are shown on the display.
3. Malfunction
In case of malfunction the LCD screen displays the measured concentration, an error code and a key symbol . On the PCB,
this condition is indicated by the yellow „ERR“ LED. The meaning of each error code is explained in Attachment 2.
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 flashing and an inscription
simultaneously starts flashing on the LCD display. The connected sensor must be calibrated immediately. The
transmitter will transmit the information about the ending calibration via current loop. The transmission will be as follows: 10s
transmitting a 4-20mA signal informing about the current gas concentration followed by a 1 second interval of 2mA current.
5. Reading the record of measured concentrations and alarms
The transmitter periodically, after 60s, stores the current detected concentration into its internal memory. The internal
memory retains data from the last 64260 measurements (cca 44 days). In order to read this information, the program
DegaConfig is required. See the DegaConfig program user manual.
Transmitter controls
A transmitters equipped with an LCD display can be controlled by the magnetic contact located on the sides of the display.
Warning: calibration
required
Warning: Service is
required
Data display Time display
Channel number
(address)
Activated magnetic
control
Calibration icon
Communication with the
control panel in
progress
Measured value
Bar graph of the
measured value
Measured value
units
Alarm PEL (long-term
exposure limit
exceeded)
Alarm STEL (short-
term exposure limit
exceeded)
Alarm level reached
Alarm indication
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

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- „BACK“ move backwards in the menu, reducing the
value
- „FRONT“ move forwards in the menu, increasing the
value
- „ENTER“ confirm/enter the menu
Placing a magnet into the indent „ “ for 2s activates the magnetic control, which is displayed by the icon „ “ on the LCD.
Reaching level 4 alarm in case of catalytic and semiconductor sensors causes a ratchet phenomenon, where even after
recovery from gas leak, the sensor is still in level 4 alarm and needs to be manually reset by pressing „ “.
Main menu structure:
Enter menu
|
History->-Information->-Settings->- Test->- Exit
|-----------------------<------------------------------|
Menu
Display
Description
History
Browsing the alarm history
Information
Information about transmitter settings
Settings
Transmitter configuration
Test
Testing the transmitter functions
Exit
Return to normal operation

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6. Menu History „HIST“
Browsing the history
Menu
Display
Description
History of all
alarms
Use „ “ to go trough individual alarms. Displays the
date and time of the alarm. Return to the history menu
„“
Highest
concentration in
the past hour
Displays the highest measured concentration and alarm
for the past hour. Return to History menu „ “
Highest
concentration in
the past 8 hours
Displays the highest measured concentration and alarm
for the past 8 hours. Return to History menu „ “
Highest
concentration in
the past 12 hours
Displays the highest measured concentration and alarm
for the past 12 hours. Return to History menu „ “
Highest
concentration in
the past 12 hours
Displays the highest measured concentration and alarm
for the past 24 hours. Return to History menu „ “
Highest
concentration
stored in the
memory
Displays the highest measured concentration and alarm,
that is stored in the memory. Return to History menu
„“
Exit
Return to the main menu
7. Information menu „INF“
Information about settings. Sequentially displays the following information. Access previous information by pressing „ “
Menu
Display
Description
Date of next
calibration
Displays the date of the next calibration
Date of last
calibration
Displays the date of the last calibration
Power voltage
Displays the power voltage

9
Temperature
Displays the chip temperature (about 15°C higher than
the ambient temperature)
RS485 device
address
Displays the device address
Range up to
Measured concentration value corresponding to 20mA
current
Alarm level 1
Displays alarm level 1
Alarm level 2
Displays alarm level 2
Alarm level 3
Displays alarm level 3
Alarm level 4
Displays alarm level 4
8. Settings menu „SET“
Protected by password 0004. After entering a wrong password, the transmitter returns to measurement mode. The password
can be changed in the menu SET->PSWD.
Menu
Display
Description
Calibration
Sensor calibration
Setting the alarms
Setting the alarms
Setting the range of the 20mA
current loop
Setting the range of the 20mA
current loop
Changing the password
Changing the password
Setting the year
Setting the year

10
Setting the date
Setting the date
Setting the time
Setting the time
Exit
Return to the main menu
Calibration
a) Connect fresh air to the sensor input. The icon „ “ flashes. After the value stabilizes, move onto the next step using
„“
b) Using „ “ select the concentration of the calibration gas, confirm „“
c) Connect the calibration gas to the sensor input. The icon „“ flashes. Wait until the value stabilizes and confirm
„“
d) Using „ “ switch between „YES“ - save calibration, or „NO“ - return to the Settings menu. Confirm the selected
option „“
e) In case of saving a new calibration, the transmitter will restart.
Setting the alarms
a) Using „ “ select the concentration for alarm 1. Confirm „ “
b) Using „ “ select the concentration for alarm 2. Confirm „ “
c) Using „ “ select the concentration for alarm 3. Confirm „ “
d) Using „ “ select the concentration for alarm 4 Confirm „ “
e) Using „ “ switch between „YES“ - save settings, or „NO“ - return to the Settings menu. Confirm the selected
option „“
Setting the range of the 20mA current loop
a) Using „ “ select the concentration appropriate to 20mA range. Confirm „ “
b) Using „ “ switch between „YES“ - save settings, or „NO“ - return to the Settings menu. Confirm the selected
option „“
Changing the password
a) Using „ “ select a number in thousands. Save the selected number „ “
b) Using „ “ select a number in hundreds. Save the selected number „ “
c) Using „ “ select a number in tens. Save the selected number „ “
d) Using „ “ select a number in units. Save the selected number „ “
e) Using „ “ switch between „YES“ - save settings, or „NO“ - return to the Settings menu. Confirm the selected
option „“
Setting the year
a) Using „ “ select a number in thousands. Save the selected number „ “
b) Using „ “ select a number in hundreds. Save the selected number „ “
c) Using „ “ select a number in tens. Save the selected number „ “
d) Using „ “ select a number in units. Save the selected number „ “

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e) Using „ “ switch between „YES“ - save settings, or „NO“ - return to the Settings menu. Confirm the selected
option „“
Setting the date
a) Using „ “ select a number in thousands. Save the selected number „ “
b) Using „ “ select a number in hundreds. Save the selected number „ “
c) Using „ “ select a number in tens. Save the selected number „ “
d) Using „ “ select a number in units. Save the selected number „ “
e) Using „ “ switch between „YES“ - save settings, or „NO“ - return to the Settings menu. Confirm the selected
option „“
Setting the time
a) Using „ “ select a number in thousands. Save the selected number „ “
b) Using „ “ select a number in hundreds. Save the selected number „ “
c) Using „ “ select a number in tens. Save the selected number „ “
d) Using „ “ select a number in units. Save the selected number „ “
e) Using „ “ switch between „YES“ - save settings, or „NO“ - return to the Settings menu. Confirm the selected
option „“
9. Menu Test „TEST“
Protected by password 0004. By entering a wrong password, the transmitter returns to measurement mode. The password
can be changed in the menu SET->PSWD.
Menu
4.20 mA current loop
test
Using „ “ sets the output current in a 4-22 mA range. Return to Test
menu „ “
Digital communication
test
Using „ “ sets the concentration broadcasted via RS485 in measuring
range of the sensor. Return to Test menu „ “
Transmitter restart
Using „ “ switch between „YES“ - for restart, or „NO“ for returning to
Test menu. Confirm „ “.
Return to main menu
Return to main menu
Operation and maintenance of the transmitter
1. Usage limits
To maintain proper operation of the transmitter it is necessary to respect the fact that step changes of humidity, condensation
or rapid changes of pressure can cause incorrect indication of the measured value. Each sensing technology is suited for
different methods of application, as described below. All sensors are characterized by a smaller or larger cross-sensitivity to
other gases than those which they are set for. Therefore we recommend to have the air in the deployment area of the
detection system analyzed before processing project documentation.
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. Longterm crossing of the measuring range causes a decrease in

12
sensitivity. In case of an atmosphere with oxygen content of less than 17%, there measured value will be overvalued. In case of
an atmosphere with oxygen content of more than 25%, the measured value will be undervalued.
b) electrochemical sensors: Constant exposure to toxic gases or short-term exposure to gases, which greatly exceed the
maximum range of the sensor, can damage the electrochemical sensor, which requires recalibration or replacement. High
temperature along with low relative humidity have a negative effect on the sensor's lifetime. In case of an atmosphere with
oxygen content of less than 1% for longer than 1 hour, the measured value will be undervalued.
c) infrared sensors:Vapor acids and alkalis can etch the optical system and distort the measurements. A check or a calibration
may be necessary.
d) semiconductor sensors: Short-term exposure to gases or vapors of organic solvents, which greatly exceed the maximum
range of the sensor, may damage the sensor and a recalibration or replacement may be required. In case of an atmosphere
with an oxygen content of less than 18 %, the measured value will be undervalued.
E) photoionization sensors: it is necessary to clean the UV lamp regularly, as its clogging of can cause loss of signal.
2. Operation
To maintain proper operation of the transmitter it is necessary to respect the fact that the presence of certain concentrations
of gases or vapors, other than those for which the sensor is set, can cause an alarm, even if the concentration of the gas does
not exceed the set level. Given the range of disturbing gases or vapors (diluents, exhaust gases, vapors of organic substances,
disinfectants, etc.) a generally allowable concentration of interfering gases can not be determined. Data on cross-sensitivity to
certain gases are listed at the appropriate sensors. Therefore we recommend to have the air in the deployment area of the
detection system analyzed before processing project documentation.
3. Operation/Maintenance
In case of contamination, the surface can be cleaned with a slightly moistened cloth.
The sensors have a different lifetime depending on the sensing technology used and on environmental conditions.
Characteristics of the sensors vary over time. Therefore it is required to perform regular checks and calibrations, which can
commence in two ways:
a) 1x per 6 months carry out a „calibration“ and functional control - adjust the sensitivity of the sensor using calibration
gas and check the functionality of the system. The exact interval depends on the purity of the environment, required
accuracy and the occurrence of disturbing gases in the atmosphere.
b) 1x per 12 months carry out a „calibration“ - adjust the sensitivity of the sensor using calibration gas and check the
functionality of the system. The exact interval depends on the purity of the environment, required accuracy and the
occurrence of disturbing gases in the atmosphere. Also carry out a „functional control" 1 x per three months - checking
the function of the entire detection system using a test gas, which does not exceed the range of the sensor. We
recommend using gas intended for laboratory use.
Perform calibration only at certified service centers with a valid certificate of competence or at the manufacturer.
For the Czech Republic only DEGA CZ s.r.o.
Accessories
1. Additional bushing DEGA BUSHING for NBxIII
PG9
Basic type of transmitters
1. Transmitters with a catalytic sensor NBx-CL III LCD RE
Transmitter type Detected gas Measurement
range
Measurement of
current loop
(4-20mA)
Standard alarm setting Resolution Calibration gas
DEGA NBM-CL III LCD RE
Methane (CH
4
)
Natural gas
CNG
0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV Methane 0,88 %

13
DEGA NBP-CL III LCD RE
Butane (C
4
H
10
)
Propan-Butane
LPG
0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV Butane 0,32 %
DEGA NBH-CL III LCD RE Hydrogen (H2) 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV Hydrogen 0,8 %
DEGA NBB-CL III LCD RE Gasoline vapors 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV Hexane 0,18 %
DEGA NBA-CL III LCD RE Ammonia 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV Methane 0,88 %
DEGA NBHFO-CL III LCD RE Refrigerant HFO 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV Methane 0,88
%
DEGA NBL-CL III LCD RE
Other flammable
and combustible
gases and vapors
0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1% DMV
According to
the selectivity
of the sensor
2. Transmitters with an electrochemical sensor NBx-EL III LCD RE
Transmitter type Detected gas Measurement
range
Measurement of
current loop
(4-20mA)
Standard alarm setting Resolutio
n Calibration gas
DEGA NBC-EL III LCD RE Carbon Monoxide
(CO) 0- 1000 ppm 0-130 ppm
1.st.26 ppm, 2. st. 45 ppm,
3st.:87ppm, 4 st. 130 ppm
ALARM "PEL":
a)according to ČSN 50 291
120min./30ppm
Application: Detection in residential
buildings
b) according to ČSN 73 6058: 30min. / 87
ppm
Application: Underground garages
c) according to Government regulation
No.321/2007 : 8h./26 ppm
Application: Working staff environment
1 ppm
Carbon
Monoxide 130
ppm
DEGA NBA-EL III LCD RE Ammonia
(NH3)
0-1000 ppm
0-100 ppm
0-300 ppm
0-50 ppm
1. st. 75 ppm, 2. st.150 ppm
3. st. 225 ppm, 4. st.300ppm
1. st. 14 ppm, 2. st.18 ppm
3. st. 27 ppm, 4. st. 47 ppm
ALARM "PEL" 20 ppm/8h
1 ppm
0,1 ppm
Ammonia 300
ppm
DEGA NBCL-EL III LCD RE Chlorine (Cl2) 0-20 ppm 0-5 ppm
1. st. 0,3 ppm, 2. st.0,5 ppm
3. st. 1,5 ppm, 4. st. 3 ppm
ALARM "PEL" : 0,2 ppm/8h
0,1 ppm Chlorine 5 ppm
DEGA NBO-EL III LCD RE Oxygen (O2) 0-30 % vol. 0-30 % vol.
1. st. 19% vol., 2. st.18% vol.
3. st. 16% vol., 4. st. 15% vol.
or
1. st. 23% vol., 2. st.24% vol.
3. st. 26% vol., 4. st. 27% vol.
0,1 % air
DEGA NBO3-EL III LCD RE Ozone (O3) 0-5 ppm 0-0,2ppm
1. st. 0,1 ppm, 2. st. 0,13 ppm
3. st. 0,17 ppm, 4. st. 0,2 ppm
ALARM "PEL 0,05 ppm/8h
0,01ppm Ozone 0,3 ppm
DEGA NBHCL-EL III LCD RE Hydrogen chloride
(HCl) 0-20 ppm 0-10ppm
1. st. 4,9 ppm, 2. st. 6 ppm
3. st. 8 ppm, 4. st. 9,3 ppm
ALARM "PEL" 5,43 ppm/8h
0,1 ppm Hydrogen
chloride 10 ppm
DEGA NBH2S-EL III LCD RE Hydrogene sulfide
(H2S) 0-50 ppm 0-15ppm
1. st. 6,5 ppm, 2. st. 8 ppm
3. st. 10 ppm, 4. st. 13 ppm
ALARM "PEL" according to Government
regulation No.321/2007 : 8h./7,1 ppm
0,1 ppm Hydrogene
sulfide 15 ppm
DEGA NBH2S-EL II HC Hydrogene sulfide
(H2S) 0-2000 ppm 0-2000ppm 1. st. 500 ppm, 2. st. 1000 ppm
3. st. 1500 ppm, 4. st. 2000 ppm 10 ppm Hydrogene sulfide 2000 ppm
DEGA NBNO2-EL III LCD RE Oxid dusičitý
(NO2) 0-20 ppm 0-15ppm
1. st. 5 ppm, 2. st. 7 ppm
3. st. 8 ppm, 4. st. 10 ppm
ALARM "PEL" 4,94 ppm/8h
0,1 ppm Oxid dusičitý 15
ppm
DEGA NBNO-EL III LCD RE Nitrogen dioxide
(NO) 0-250 ppm 0-15ppm
1. st. 5 ppm, 2. st. 7 ppm
3. st. 8 ppm, 4. st. 10 ppm
ALARM "PEL" 7,57 ppm/8h
0,1 ppm
Nitrogen dioxide
15 ppm
DEGA NBSO2-EL III LCD RE Sulfur dioxide
(SO2) 0-20 ppm 0-3,5 ppm
1. st. 1,7 ppm, 2. st. 2 ppm
3. st. 2,5 ppm, 4. st. 3,5 ppm
ALARM "PEL" 1,91 ppm/8h
0,1 ppm Sulfur dioxide 4
ppm
DEGA NBCH2O-EL III LCD RE
Formaldehyde
(CH2O) 0 - 10 ppm 0-0,7 ppm
1. st. 0,3 ppm, 2. st. 0,5 ppm
3. st. 0,6 ppm, 4. st. 0,7 ppm 0,01 ppm
Formaldehyde 1
ppm
DEGA NBC2H4-EL III LCD RE Ethylene (C2H4) 0 - 10 ppm 0-10 ppm 1. st. 1,7 ppm, 2. st. 5 ppm
3. st. 7 ppm, 4. st. 10 ppm 0,1 ppm Ethylene 10 ppm
DEGA NBC2H4O-EL III LCD RE Ethylene oxide
(C2H4O) 0 – 10 ppm 0-1,5 ppm 1. st. 0,5 ppm, 2. st. 0,8 ppm
3. st. 1,2 ppm, 4. st. 1,5 ppm 0,1 ppm Ethylene oxide 2 ppm

14
DEGA NBH-EL III LCD RE Hydrogen (H2) 0 - 1000 ppm 0-400 ppm 1. st. 100 ppm, 2. st. 200 ppm
3. st. 300 ppm, 4. st. 400 ppm 1ppm Hydrogen 400 ppm
DEGA NBH-EL III LCD RE Hydrogen (H2) 0 - 1000 ppm 0-400 ppm
1. st. 100 ppm, 2. st. 200 ppm
3. st. 300 ppm, 4. st. 400 ppm 1ppm
Hydrogen 400
ppm
DEGA NBHCN-EL III LCD RE Hydrogen cyanide
(HCN) 0 - 100 ppm 0-8,3 ppm 1. st. 2,5 ppm, 2. st. 5,0 ppm 3. st. 6,2 ppm, 4. st. 8,3 ppm 1 ppm Hydrogen cyanide 10 ppm
DEGA NBPH3-EL III LCD RE Hydrogen cyanide
(PH3)
0 - 5 ppm
0-0,2 ppm 1. st. 0,06 ppm, 2. st. 0,1 ppm
3. st. 0,15 ppm, 4. st. 0,2 ppm 0,1 ppm Hydrogen
cyanide 0,3 ppm
DEGA NBSIH4-EL III LCD RE Silane (SiH4) 0 - 50 ppm 0-5 ppm 1. st. 2 ppm, 2. st. 3 ppm
3. st. 4 ppm, 4. st. 5 ppm 0,1 ppm Silane 6 ppm
DEGA NBCLO2-EL III LCD RE Chlorine dioxide
(ClO2) 0-1 ppm 0-0,2 ppm 1. st. 0,06 ppm, 2. st. 0,1 ppm
3. st. 0,15 ppm, 4. st. 0,2 ppm 0,01 ppm Chlorine dioxide 0,3 ppm
DEGA NBL-EL III LCD RE
Other chemical
substances
according to
customer
requirements
According to the
type of sensor According to chemical substance
Accordin
g to
chemical
substanc
e
According to
chemical
substance
3. Transmitters with an infrared sensor NBx-IL III LCD RE
Transmitter type Detected gas Measurement
range
Measurement of
current loop
(4-20mA)
Standard alarm setting Resoluti
on Calibration gas
DEGA NBCO2-IL III LCD RE Carbon dioxide
(CO2) 0-5 % vol. 0-2,5 % vol. 1. st. 0,5%, 2. st. 1% 3. st. 2%, 4. st. 2,5% 0,1 % Carbon dioxide 2,5%
DEGA NBM-IL III LCD RE
Methane (CH4)
/ Natural gaas
/Coal gas / CNG
0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Methane 0,88%
DEGA NBP-IL III LCD RE Butane / LPG
/ Propan-Butane 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Butane 0,32 %
DEGA NBB-IL III LCD RE Gasoline vapors 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Hexane 0,18 %
DEGA NBC2H6-IL III LCD RE Etane 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Etane 20% DMV
DEGA NBC2H5OH-IL III LCD
RE
Ethanol 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Ethanol 20% DMV
DEGA NBC2H4-IL III LCD RE Ethen 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Ethen 20% DMV
DEGA NBC2H4O-IL III LCD RE Ethene oxide 0–100% DMV 0-20% DMV
1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 %
Ethene oxide
20% DMV
DEGA NBC6H14-IL III LCD RE Hexane 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Hexane 20% DMV
DEGA NBN2O-IL III LCD RE Nitrous oxide 0-1% vol 0-0,5% vol 1. st. 0,125% vol, 2. st. 0,25% vol
3. st. 0,375% vol, 4. st. 0,5% vol 0,01 % Nitrous oxide
0,5% vol
DEGA NBC5H12-IL III LCD RE Pentane 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Pentane20% DMV
DEGA NBC3H6-IL III LCD RE Propene 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Propene 20% DMV
DEGA NBC2H6-IL III LCD RE Etane 0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV 0,1 % Etane 20% DMV
DEGA NBL-IL III LCD RE
Other flammable
and combustible
gases and vapors
according to the
selectivity of the
sensor
0–100% DMV 0-20% DMV 1. st. 5% DMV, 2. st. 10% DMV
3. st. 15% DMV, 4. st. 20% DMV
0,1%
DMV
According to the
selectivity of the
sensor
4. Transmitters with a semiconductor sensor NBx-SL III LCD RE
Transmitter type Detected gas Measurement
range
Measurement of
current loop
(4-20mA)
Standard alarm setting Resoluti
on Calibration gas
DEGA NBC-SL III LCD RE Carbon Monoxide
(CO) 0 - 1.000 ppm 0—130 ppm. 1. st. 26 ppm, 2. st. 45 ppm 3. st. 68 ppm, 4. st. 87 ppm
1 ppm
Carbon Monoxide
130 ppm
DEGA NBM-SL III LCD RE
Methane (CH
4
)
/ Natural gas
/ CNG
0 – 100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV
0,1 %
Methane 0,88 %
DEGA NBP-SL III LCD RE
Butane (C
4
H
10
)
/ Propane-Butane
/ LPG
0 – 100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV
3. st. 15% DMV, 4. st. 20% DMV
0,1 %
Butane 0,32 %
DEGA NBA-SL III LCD RE Ammonia
(NH3) 0 -1.000 ppm 0-20% DMV 1. st. 100ppm, 2. st.200 ppm 3. st. 300 ppm, 4. st. 400ppm
1 ppm
Ammonia 300ppm
DEGA NBB-SL III LCD RE Gasoline and diesel
vapors 0 – 100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV 3. st. 15% DMV, 4. st. 20% DMV
0,1 %
Hexane 0,18%
DEGA NBF-SL III LCD RE Freon R134a 0 – 600 ppm 0-1000 ppm 1. st. 150ppm, 2. st.300 ppm3. st. 450 ppm,
4. st. 600ppm
1 ppm
2000ppm
DEGA NBH-SL III LCD RE Hydrogen (H2)0 - 100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV 3. st. 15%
DMV, 4. st. 20% DMV
0,1 %
0,8%

15
DEGA NBY-SL III LCD RE Acetylene (C2H2) 0 – 100% DMV 0-20% DMV 1. st. 5% DMV, 2. st.10% DMV 3. st. 15%
DMV, 4. st. 20% DMV
0,1%
20 % DMV
DEGA NBR-SL III LCD RE
Refrigerant:
R401A, R404A,
R407C, R32,
R410A, R12, R22
0 – 20.000 ppm 0-20% DMV According to the type of refrigerant
1 ppm
According to the
type of refrigerant
DEGA NBL-SL III LCD RE
Other flammable
and combustible
gases and vapors
according to the
selectivity of the
sensor
0 – 100% DMV
0-20% DMV 1. st. 5% DMV, 2. st.10% DMV 3. st. 15% DMV, 4. st. 20% DMV
0,1 %
According to the
detected
substance

16
5. Transmitters with PID sensor NBx-PL III PID LCD RE
Transmitter type Detected gas RMeasurement
range
Measurement of
current loop
(4-20mA)
Standard alarm setting Resoluti
on Calibration gas
NBP-PL III PID LCD RE
Butane (C
4
H
10
)
/ Propane-Butane
/ LPG
0 - 5000 ppm 0—197 ppm 1. st. 49 ppm, 2. st. 99 ppm
3. st. 147 ppm, 4. st. 198 ppm
1 ppm
Isobutylen
300ppm
NBC8H8-PL III PID LCD RE
Styrene 0 - 5000 ppm 0—94 ppm 1. st. 23 ppm, 2. st. 47 ppm
3. st. 69 ppm, 4. st. 94 ppm
1 ppm
Isobutylen
300ppm
NBC3H6O-PL III PID LCD RE
Acetone 0 - 5000 ppm 0—630 ppm 1. st. 157 ppm, 2. st. 315 ppm
3. st. 471 ppm, 4. st. 630 ppm
1 ppm
Isobutylen
300ppm
NBC7H8-PL III PID LCD RE
Toluene 0 - 5000 ppm
0—133 ppm 1. st. 33 ppm, 2. st. 66 ppm
3. st. 99 ppm, 4. st. 133 ppm
1 ppm
Isobutylen
300ppm
NBC2H5OH-PL III PID LCD
RE
Ethanol 0 - 5000 ppm 0—1536 ppm 1. st. 384 ppm, 2. st. 768 ppm
3. st. 1152 ppm, 4. st. 1536 ppm
1 ppm
Isobutylen
300ppm
NBC3H8O-PL III PID LCD RE
Isopropylalkohol 0 - 5000 ppm 0—400 ppm 1. st. 100 ppm, 2. st. 200 ppm
3. st. 300 ppm, 4. st. 400 ppm
1 ppm
Isobutylen
300ppm
NBC4H8O-PL III PID LCD RE
Methylethylketon 0 - 5000 ppm 0—306 ppm 1. st. 77 ppm, 2. st. 153 ppm
3. st. 231 ppm, 4. st. 306 ppm
1 ppm
Isobutylen
300ppm
NBC8H8-PL III PID LCD RE
Styren 0 - 5000 ppm 0—94 ppm 1. st. 23 ppm, 2. st. 47 ppm
3. st. 69 ppm, 4. st. 94 ppm
1 ppm
Isobutylen
300ppm
NBL-PL III PID LCD RE Other VOC 0 - 5000 ppm
0—500 ppm 1. st. 125 ppm, 2. st. 250 ppm
3. st. 375 ppm, 4. st. 500 ppm
1 ppm
Isobutylen
300ppm
LEL - Lowest explosion level
ALARM "PEL": Permitted exposure limit - maximal permitted value of the average concentration over time.
Alarm settings can be chosen freely according to customer requirements in measurement range.

17
General warranty terms and conditions
When following the instructions for installation, operation and maintenance, the manufacturer guarantees 24 months from
the date of receipt for the product. Should the product purchased be put into operation by an entity other than the seller, the
warranty period commences from the date that the product is put into operation, provided that the buyer ordered its
commissioning within three weeks of its receipt. The customer expressly acknowledges that during a warranty period that
extends beyond the length of the warranty period that is specified in the Commercial Code (the statutory warranty) s/he can
neither require replacement of the product nor may s/he withdraw from the contract.
1. When claiming a product defect, it is necessary to submit a proof of purchase of the item containing the following
information: name and surname, name of the seller, his identification number, in case of a legal person the name,
identification number and registered office, in case of a physical person - surname, address and warranty certificate, if the
buyer received one from the seller. The validity of the warranty shall not be affected by non-compliance with the
obligations related to the issuance of the warranty certificate.
2. Claims concerning the product (only complete devices are accepted for a warranty repair) may be filed during the
warranty period only with the seller from which it was purchased; subsequently, the seller is required to forward the
product to an authorized service centre or to the manufacturer.
3. A condition for the recognition of the rights under the warranty is the installation of the product performed by an
authorized person in possession of a valid certificate from the manufacturer.
5. Claims regarding a product defect that can be dealt with reasonably quickly and without additional consequences will be
resolved by remedying the defect (repair) or by replacement of the product part, because in such a case it is a
contradiction of the standard norms that the entire product should be replaced (§ 616, paragraph 4 of the Commercial
Code).
6. The buyer who exercises the right of warranty repair is not entitled to the return of the parts that have been replaced.
7. The warranty period can be extended for up to 48 months and its validity can be extended beyond the standard length on
the basis of the conclusion of an individual warranty contract. Further information may be obtained through a specific
business meeting.
This warranty is not applicable to:
•a transmitter that has not been put into operation by the manufacturer or by a certified employee in possession of a
valid certificate issued by the manufacturer
•A product that did not have regularly performed calibrations and functional checks by the manufacturer or by a certified
employee in possession of a valid certificate issued by the manufacturer
•damage caused by fire, water, static electricity, power surges in the electric supply or in the public network, accident,
improper use of the product, wear and tear
•contamination of the sensors of the device and their subsequent cleaning
•damage caused by improper installation, any adjustment, modification or improper manner of use inconsistent with the
instruction manual, the technical standards or the applicable safety regulations in the Czech Republic
•damage to the product during transportation caused by improper handling or handling of the product in a manner
contrary to the advice provided in the instruction manual
•DEGA products that have been used in association with other than original DEGA products,including consumables and
accessories
•calibration of transmitters, i.e. setting detection limits
•wear or destruction of the sensors of the transmitter, including the necessity to replace them
•bearing additional parts or consumables (e.g. a foil label, seal, etc.), that are detrimental to normal wear and tear during
operation, together with wear and tear of the product and its parts caused by their normal use
For the complete version of the general business conditions and of the claims procedure go to www.dega.cz
Manufacturer: DEGA CZ s.r.o., Malešická 2850/22c, 130 00 Praha 3, Czech republic
VAT: CZ 279 029 43, Telephone [phone] E-mail: in[email protected] , Web: www.dega.cz
© 2019 DEGA CZ s.r.o. User Manual ver.: 01DEGANBx-yLIII LCD RE 290519