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temperature along with low relative humidity have a negative effect on the sensor's lifetime. In case of an atmoshpere having 
an oxygen content of less than 1% for longer 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 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 atmoshpere 
having na oxygen content of less than 18%, there will be an underestimation of the measured value. 
 
e) 

photoionization sensors:

 the UV lamp or sensor must be replaced regularly, its clogging may cause loss of signal. 

 

2.

 

Operation 

To maintain proper operation of the transmitter it is neccesery 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 
certail gases are included at the apporpriate sensors. Therefore before processing 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 slightly moistened cloth. 
The seonsors have a different lifetime depending on the sensing technology used, and environmental conditions. 
Characteristics of the sensors vary over time. Therefore it is required to perform regular checks and calibrations, which can be 
done in two ways: 

a)

 

1  x  every  six  months 

carry  out  a  „

calibration“  and  functional  control  - 

adjust  the  sesitivity  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 occurrance of disturbing gases in the atmoshpere.  

b)

 

1 x every twelve months 

carry out a „

calibration“ - 

adjust the sesitivity 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 
occurrance  of  disturbing  gases  in  the  atmoshpere.  Also  carry  out  a

  „functional  control"  1  x  every  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. 

 
For the „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 the Czech Republic only DEGA CZ s.r.o.

 

 

Accessories and basic types of transmitters 

1.

 

Calibration adapter/connection to the gas pump DEGA GAS INLET 

 

 

2.

 

Cover against splashing water DEGA WATER CAP 

 

 

Summary of Contents for 40100002

Page 1: ...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 liable for any damage resulting from use of this device ...

Page 2: ... Additional Ex d cable gland 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 setting the transm...

Page 3: ...g 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 triggering fans shutdown technology etc Perform calibration and operational and functional checks only at certified service centers with a valid certificate of competence or the manufacturer Warning The transmitter auto...

Page 4: ... generation product with new DEGA design DEGA NSx EL III with an electrochemical sensor They operate on the principle of change of electrical parameters on the electrodes stored in electrolyte due to oxidation reduction reactions of the detected gas on it s surface These sensors have good selectivity and the ability to detect very low concentrations of toxic gases DEGA NSx CL III with a catalytic ...

Page 5: ...e worker exposure to volatile organic compounds VOCs such as solvents fuels degreasers plastics their precursors heat transfer fluids lubricants etc during manufacturing processes and waste handling Product desciption Sensor cover Ex d cable gland OptionalEx d cable gland Body of the removable sensor Sensor bottom Body of the removable sensor Ex d cable gland Mounting holes PCB electronics Ex d ca...

Page 6: ...ng downwards as specified by the detected substance d Direct the cable trough the cable gland e Connect the cabeling to the terminal block When using the second Ex d cable gland dismout the Ex d blind plug It is allowed to use only Ex d cable glands with M20x1 5 threads f Connect the LCD g Assemble the transmitter with the four hexagon sockets scews 5 mm h Groung the enclosure by a CUPAL washer a ...

Page 7: ...have a unique adress within the entire bus otherwise there will be communication collisions and malfunctions The transmitter adress can either be set internally using the DegaConfig program or using the DIP switch on the PCB If the position 6 labeled ADD is in the ON position then the adress according to the setting of pins 1 5 is considered Otherwise the adress set in DegaConfig is considered The...

Page 8: ...tter will transmit the information about the ending calibration via current loop The transmission will be the following 10 s transmitting a 4 20 mA signal informing about the actual gas concentration following 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 int...

Page 9: ...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 slightly moistened cloth The seonsors have a different lifetime depending on the sensing technology used and environmental conditions Characteristics of the sensors vary over time Therefore it is required to perform regular checks and ...

Page 10: ...smitter type Detected gas Measurement range Measurement of current loop 4 20 mA Resolution Calibration gas 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 Monoxi...

Page 11: ...III Nitric oxide NO 0 250 ppm 0 15 ppm 0 1 ppm Nitric oxide 15 ppm 40100045 DEGA NSNO EL 1000 III Nitric oxide NO 0 25 ppm 0 25 ppm 0 1 ppm Nitric oxide 150 ppm 40100047 DEGA NSSO2 EL 20 III Nitric oxide NO 0 1000 ppm 0 100 ppm 1 ppm Sulfur dioxide 10 ppm 40100064 DEGA NSSO2 EL 200 III Sulfur dioxide SO2 0 20 ppm 0 3 5 ppm 0 01 ppm Sulfur dioxide 50 ppm 40100065 DEGA NSSO2 EL 2000 III Sulfur dioxi...

Page 12: ...III Hydrogen fluoride HF 0 10 ppm 0 10 ppm 0 01 ppm VOC 20ppm 40100067 DEGA NSBR2 EL 20 III VOC 0 20 ppm 0 20 ppm 0 01 ppm Chlorine 5 ppm 40100003 DEGA NSBR2 EL 200 III Bromine Br 0 20 ppm 0 20 ppm 0 01 ppm Chlorine 50 ppm 40100004 DEGA NSALC EL 200 III Bromine Br 0 200 ppm 0 200 ppm 0 1 ppm Ethanol 200 ppm 40100002 DEGA NSRCOOH EL 100 III Alkohol 0 200 ppm 0 200 ppm 0 1 ppm Ammonia 300 ppm 401000...

Page 13: ...0 100 LEL 0 20 LEL 0 1 20 LEL 40100073 DEGA NSR SL 2000 III Refrigerant R401A R404A R407C R32 R410A R12 R22 0 2000 ppm 0 2000 ppm 1 ppm According to the type of refrigerant 40100072 DEGA NSHFO SL 2000 III Refrigerant R1234yf 0 2000 ppm 0 2000 ppm 1 ppm According to the type of refrigerant 5 Transmitters with a PID sensor NSx PL III PID Product code Transmitter type Detected gas Measurement range M...

Page 14: ... OFF ON ON OFF ON 23 ON ON ON OFF ON 24 OFF OFF OFF ON ON 25 ON OFF OFF ON ON 26 OFF ON OFF ON ON 27 ON ON OFF ON ON 28 OFF OFF ON ON ON 29 ON OFF ON ON ON 30 OFF ON ON ON ON 31 ON ON ON ON ON 2 Signalization transmitted by the current loop 4 20 mA Measurement The measure concentration is directly proportional to 4 20 mA current output Exceeding the range of measured concentrations Current output ...

Page 15: ...ct shall 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 obtaine...

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