Hanwei TS293P Flammable Gas Detector with 4÷20mA Output User Manual

Hanwei TS293P Flammable Gas Detector with 4÷20mA Output

Technical Specifications

Power supply| 12÷24Vcc (-10/+15%) 2W 12÷24Vdc(-10/+15%) 3W / 12÷24Vcc(-10/+15%) 2W
---|---
Sensor Type| Catalytic Pallister
Cartridge Sensor| Replaceable
Current Output| 4 ÷ 20 mA Linear
load resistor| 500 ohm / 24Vdc (-10%)
Standard Range| 0 ÷ 100 % LEL
Limits| 100 % LEL
Average Life in fresh air| 5 years
Response Time| T90< 60 seconds
Repeatability| ≤ 5% signal
Accuracy| ± 10%
Linearity| up to 60%
Long time drift in fresh air| < ± 4 % LEL year
Max Storage Time| 12 month
Storage Temp-Humidity| -20 ÷ + 55°C / 5 ÷ 95 % RH non condensed
Operation Temp./Humidity| -10 ÷ + 50 °C / 10÷90 % RH non condensed
Operation Pressure| Atmospheric
Size- Weight| 190 x 105 x 83 mm / 3 Kg

DESCRIPTION

The TS293P series is a is a gas detector able to detect combustible gases by employing a catalytic Pallister sensor calibrated up to 100% LEL to different gases and find their best application in centralized alarm systems for laboratories, manufacturing industries and environments to be protected from possible leakage of gas. The instruments is flameproof certified and comprise of an enclosure in which the electronic circuit and the terminals are mounted and a downward facing cylindrical sensor housing with inside a replaceable “Cartridge Sensor”.
The instrument has a 4÷20mA linear output (S) with 100%LEL (Lower Explosive Limit) F.S. of detected gas. This output is connectable to a remote Gas Central Unit as listed in Table 1. On the Printed Circuit Board, F1 and F2 key using for Test and Calibration routine protected by a code and 3 LED shows the working conditions:

Red LED “ALARM”:
20% LEL alarm indication.
Green LED “ON”:
normal working condition
Yellow LED “FAULT”:
the sensor should be faulty, disconnected, out of scale or expired.

NOTES ON THE AVAILABLE MODELS

The above Gas value is on compliance with EN61779-1.

TS293PE is calibrated to detect Acetylene ( C2H2 ).
It is a color less gas, lighter than air, highly inflammable. With the air easily for explosive mixtures. Its density as to air is 0.9 and its LEL (Lower Explosive Limit) is 2.3%volume (see Table 3).

TS293PS is calibrated to detect Styrene ( C8H8 ).
It is a yellowish transparent oily liquid, which evaporates at ambient temperature, the vapours are heavier than air, toxic and flammable. Its density as to air about 3.6 and its LEL (Lower Explosive Limit) is about 1.1%volume (see Table 4). Its main use is as monomer for the production of many plastics.

TS293PX-H can be calibrated to detect gases in Table 3 and is used in polluted environments.

OPERATIONAL DESCRIPTION

The catalytic Pellistor sensor is practically insensitive to humidity and temperature variations. The calibration is carried out for the specific gas to be detected. Anyway, it can contemporaneously detect any other flammable gas that should be present in the same environment

Note that the LEDs are not visible when the enclosure is closed

Preheating: when powered, the sensor needs a time of preliminary heating of about 60 seconds. During this period the yellow LED “FAULT” flashes. After this period, the yellow LED light off, the green LED “ON” illuminates to indicate normal functioning. After this period the unit is able to detect gas even if it attains the optimum stability conditions after about 4 hours continual functioning.

Normal operation: the green LED “ON” should be light on.

Alarm: when Gas concentration attains 20% LEL the red LED “ALARM” illuminates (only if it be activate by Dip-Switch).

Faults: the Yellow LED illuminates and the “S” output falls down to 0mA. (The different faults are listed below).

Yellow LED illuminates each 4 seconds (with green LED activate): this happens when the “Cartridge Sensor” has overcome its period of life (about 5 years) and its correct operation is not longer guaranteed. The detector keeps on operating normally but it is necessary to replace, as soon as possible, the “Cartridge Sensor” with a new one. The type to be required is listed on page

1. The replacement procedure is described in the attached manual.
   Yellow LED activate, green LED off (0mA output signal): this signal different kind of faults. 1) The Dip Switch set up is wrong, please verify (see Table 2). 2) The “Cartridge Sensor” is not working, please replace with new one. 3) If a new “Cartridge Sensor” is installed or it is not correctly connected or a not compatible one is mounted. Please check the cartridge connections and compatibility these checks are made connecting and disconnecting the device. If the condition does not change, please replace the unit and/or send it back to the supplier to repair.
   Yellow and green LED activates (0mA output signal): this happens when the “Cartridge Sensor” is not working. First try to perform the procedure of “ZERO” as described in the section “Test and  Calibration > Zero adjust” then disconnect and connect the unit, finally try to replace a new “Cartridge Sensor”. If the condition is not change, please replace the unit and/or send it back to the supplier to repair.
   All LED activates (>24mA output signal): this happens when the “Cartridge Sensor” is not working or gas concentration is out of scale (higher than 100% LEL) If there are not any gas leaks and the condition is not change, please replace the unit and/or send it back to the supplier to repair.

INSTALLATION

The detector must be accurately installed and testing according to the national dispositions in force on the safety of the plants and installation of electric devices in areas with danger of explosion

Mounting: The Fig. 2 shows the instrument size. The unit must be positioned vertically with the sensor downwards.

Models TS293PE should be fixed at 20-30 cm from the ceiling (Acetylene is lighter than air).

Models TS293PS should be fixed at 20-30 cm from the floor (Stirene vapours are heavier than air).

Model TS293PX-H should be fixed in high position with a gas Vapour Density less than 1 (the gas is lighter than air) or in bottom position with a density greater than 1, (the gas is heavier than air) (see Table 3 and 5 column n.4).

Electrical Connection (see Fig.2): the maximum distance to install each detector from the Gas Central Unit is show in table 1. Normally use a tree wire shielded cable.

The terminals (+ – S), are polarized plug-in type, it is necessary to extract them to make the connection.

Note: Dip-Switch should be set with instrument powered off. Dip-Switch 1 settled ON activates ALARM Red LED indication (see Table 2).

Important: Once installation is completed, power up the unit, wait about 20 to 30 minutes and then to adjust the sensor to the environment, only if it is necessary, carry out the ”Zero Adjust” (see ‘Test and Calibration).

COMPATIBILITY WITH OTHER CENTRAL UNITS: In case of a central unit other then Tecnocontrol, please verify the max load resistor as shown in Fig. 4. We suggest using 24Vdc power supply.

WARNING

Average life: The sensitive element used in this detector has an excellent stability in time. In fresh air and in normal working condition the sensor’s life is about 5 years from the date of installation. After this period the yellow LED “FAULT” flashes every 4 seconds, is necessary replacing the “Cartridge Sensor”. Periodical testing: we advise to carry out working tests every 12 months. Tests, Zero Adjust and Calibration with Gas/Air mixture as explained in chapter “Tests and Calibration”.
Note: the detector is not able to detect gas leaks occurring outside the room where it is installed, neither inside walls nor under the floor.
Important : The catalytic Pellistor sensor operates only in presence of Oxygen. Do not use pure gases or a lighter directly on the sensor since they could damage it irremediably.
Warning: Consider that in polluted environments, or with vapours of flammable substances (including solvents), the lifetime of the sensor can be reduced. Some substances cause a permanent reduction of sensitivity; avoid contacts of the sensor with vapours of Silicon (found in paints, sealants and greases), Tetraethyl lead and Phosphate esters. Other substances cause a temporary loss of sensitivity; these “inhibitors” include Halogens, Hydrogen sulphide, Chlorine and Chlorinated hydrocarbons (Trichloroethylene or Carbon tetrachloride). After a short time in fresh air, the sensor resumes its normal operation.

TEST AND CALIBRATION

PAY ATTENTION: This procedure has to be made with extreme attention and by authorized and trained people; because starting this procedure it will start both Outputs (relays) causing the activation of connected alarm devices. The instrument has three different code protected functions: Operation Check, Zero Adjust and Calibration.
Operation Check, Zero Adjust and Calibration: are different code protected functions. To access these functions is necessary to insert the relevant “Code” through the keys F1 and F2. To have the key pressure recognized, hold pressing it for around a second (until the Green Led doesn’t switch off for a moment). Then the next key can be pressed. In case of error all it takes is waiting around 10 seconds and the sequence is automatically erased.

Calibration Kit, Sample Gas Bottles (for Calibration Check and Calibration) please, only using a mixture

20%LEL (0.88% volume) Methane in Air (20.9% Oxygen)

You can use either the disposable cylinder, Tecnocontrol mod. BO200, complete with adjust valve or the high pressure ones with reduction gear. Is also necessary to use the calibration kit Tecnocontrol mod. TC011.
“INSTRUMENT OPERATION CHECK” (Check Code: F2, F2, F1, F1): this function allows to effect a functional test of the equipment. After having inserted the “Code Test”, all LEDs are switched off. Then LEDs will switch on in sequence, the Led, from the yellow up to the red. At the end all the LEDs will remain lighted for around 5 seconds then the detector returns at the conditions of normal operation. It is advisable to perform this operation every 12 months according to the use. Note: this function is not working if the red LED is already switched on.
“ZERO ADJUST” (Zero Code: F2, F1, F1, F2): this function is to adjust the Zero sensor and can be done in clean air only (environment without the presence of gas or other pollutants). Consider that the TS293P has a sophisticated follower of zero, that every hour will reset the sensor, if of course there is the presence of gas. If necessary, perform this operation after installation or after changing the “Cartridge” or every 6-12 months depending on environmental conditions. After entering the “Zero Code” as confirmation of the operation, there will be a flashing red LED and output becomes 4.0 mA

Note: This function is not working if mA output is more than 5,6mA (10% LEL) and/or red LED is already been switched on. In this case, it will be necessary to recalibrate the unit and/or replacing the “Cartridge”

“CALIBRATION” (Calibration Code: F2, F2, F2, F1, F2, F2): this function allows completely recalibrate the sensor using the gas mixture indicated above.
Warning: to guarantee that no errors of elaboration happen, the rare possibility exists that during the Calibration the yellow LED switch off every 8 seconds, in this case interrupt the procedure, switch off and witch on the instrument and repeat the Calibration. If condition persists it will be necessary to send the detector to the supplier for the reparation.
Important note: During Calibration routine the mA output indicates 0mA.

The “Calibration” can be done in clean air only (environment without the presence of flammable or other polluting gas). With the keys perform the “Calibration Code”. Wait until the yellow and green LED switch on fix and the red LED starts to flash. Insert the TC011 on the sensor holder and adjust the influx of the gas the way that the flow meter indicates around 0.3 l/mins (see Fig.3). Wait around 3 minutes, until the red LED lights (and while it is ON), press the key F2 and hold it pressed until the red LED is switched off for at least 2 seconds (but if the red LED continues to blink more than 4-5 minutes means that the gas flow is not constant or unsatisfactory, or the concentration is not as required, stop the operation, turn off the instrument and recalibrate). Then, close the gas cylinder and remove TC011. At this point we can have two possibilities:

Yellow and green LED illuminates: the calibration routine is correct. Wait 8 seconds, until the instrument automatically restores the normal working conditions. (See “Operational Description > Preheating”)

Yellow LED illuminates: the routine has failed. In this case, wait 8 seconds, until the instrument automatically repeat Preheating, then repeat the “Calibration” routine without inserting again the code. If condition still persists after the replacement of the “Cartridge”, it will be necessary to send the detector back to the manufacturer for reparation

“CALIBRATION CHECK” (no Code required): using the gas mixture indicated above, this function is used to control, the correct response to the gas and can be made after the “Calibration” or the installation. But should be done during the periodic maintenances, as it is the only method to verify the effective functioning of the detector. Insert the TC011 over the sensor holder, adjust the sample gas bottle valve as the flow meter indicates around 0.3 l/mins (see Fig.3) , verify with a voltmeter connected to the Test- Point “TESTmA”, (see fig.2) the value reach the mV value (± 0,2%) as shown in Table 3 or 4 on column 8 [corresponding to mA output value (±0.2mA) as indicated in column 9. The central unit should be display about the %LEL value (±2) as indicated in column 10]. If the result is different, is necessary to recalibrate the sensor (see “Calibration”). Then, close the gas bottle, remove TC011. Then, the mA output

will slowly decrease up to 4mA.
Using a cylinder with the specific gas/Air mixture, the output signal will correspond to the gas used. (Example if you have to verify a hydrogen detector, using a cylinder with H2 at 0.8% volume (20% LIE) in air, the mA output will be approximately 7.2 mA (corresponding about to 72mV measured on “TESTmA”).

Table 1

Cable Size| Cable Resistance [Single wire]| The maximum distance to install each detector from the 12Vdc power Supply| The maximum distance to install each detector from the 24Vdc power Supply
---|---|---|---
0,75 mm 2| 26| Ω/km| 100 m| 300 m
1| mm 2| 20| Ω/km| 150 m| 400 m
1,5 mm 2| 14| Ω/km| 200 m| 500 m
2,5 mm 2| 8| Ω/km| 400 m| 800 m

Table 2

“S1-SET”(Dip-Switch)| Led Allarme

Alarm LED / LED d’alarme

---|---
1| 2| 3| 4
ON| ON| ON| ON| OFF
ON| OFF| OFF| OFF| ON
Dip-Switch should be set with instrument powered off.

Table 3
Cartridge Sensor

1| 2 (1)| 3| 4 (2)| 5 (1)| 6 (3)| 7| 8| 9| 10
---|---|---|---|---|---|---|---|---|---
Model and detected Gas| n. CAS CAS No. N° CAS| Molecular formula| “K”| LIE LEL

%vol

| Density

Aria / Air = 1

| 20 % LIE/LEL

%vol

| (TP1/TP2)

mV

| Output Sortie mA| LIE LEL

%

TS293PE

Acetilene / Acetylene

| __

74-86-2

| __

C2H2

| __

1,59

| __

2,30

| __

0,9 ↑ ↔

| __

0,46

| __

89,6

| __

8,96

| __

31

TS293PX-H|
Acetato di butile-n / n- Butyl acetate| 123-86-4| C6H12O2| 2,48| 1,70| 4,00 ↓| 0,34| 120,0| 12,00| 50
Acetato di etile / Ethyl acetate| 141-78-6| C4H8O2| 2,15| 2,00| 3,04 ↓| 0,40| 110,4| 11,04| 44
Acetato di metile (Metilacetato) / Methyl acetate| 79-20-9| C3H6O2| 1,84| 2,80| 2,56 ↓| 0,56| 99,2| 9,92| 37
Acetone / Acetone| 67-64-1| C3H6 O| 1,67| 2,50| 2 ↓| 0,50| 94,4| 9,44| 34
Acetonitrile Acetonitrile| 75-05-8| CH3CN| 1,95| 3,00| 1,40 ↓| 0,60| 104,0| 10,40| 40
Acido acetico / Acetic acid| 64-19-7| C2H4O2| 3,00| 4,00| 2,07 ↓| 0,80| 131,2| 13,20| 57
Acido butirrico-n / n-Butyric acid| 107-92-6| C4H8O2| 2,14| 2,00| 3,04 ↓| 0,40| 110,4| 11,04| 44
Acido cianidrico / Hydrogen cyanide| 74-90-8| HCN| 1,94| 5,60| 0,9 ↑| 1,12| 104,0| 10,40| 40
Acqua Ragia / White spirit (5)| | | 2,00| 0,80| 4,6 ↓| 0,16| 104,0| 10,40| 40
Alcool butilico terz. / tert-Butyl alcohol| 75-65-0| C4H10O| 1,56| 2,30| 2,55 ↓| 0,46| 89,6| 8,96| 31
Alcool butilico-n / n-butyl alcohol (1-Butanol)| 71-36-3| C4H10O| 2,20| 1,40| 2,55 ↓| 0,28| 110,4| 11,04| 44
Alcool etilico (Etanolo) / Ethyl alcohol (Ethanol)| 64-17-5| C2H6O| 1,58| 3,50| 1,59 ↓| 0,70| 89,6| 8,96| 31
Alcool isobutilico / 2-Methyl-1-propanol (iso-Butyl alcohol)| 78-83-1| C4H10O| 1,90| 1,68| 2,55 ↓| 0,34| 99,2| 9,92| 37
Alcool isopropilico(Propanolo) / iso-Propyl alcohol ( Propan-2-ol )| 67-63-0| C3H8O| 2,30| 2,00| 2,1 ↓| 0,40| 110,4| 11,04| 44
Alcool metilico (Metanolo) / Methyl alcohol (Methanol)| 67-56-1| CH4O| 1,28| 6,00| 1,11 ↓| 1,20| 81,6| 8,16| 26
Alcool propilico / n-Propyl alcohol ( 7 Propan 1-ol)| 71-23-8| C3H8O| 1,69| 2,10| 2,07 ↓| 0,42| 94,4| 9,44| 34
Aldeide acetica (Acetaldeide) / Acetaldehyde| 75-07-0| C2H4O| 1,57| 4,00| 1,52 ↓| 0,80| 89,6| 8,96| 31
Ammoniaca (anidra) / Ammonia (anhydrous)| 7664-41-7| NH3| 0,70| 15,00| 0,59 ↑| 3,00| 62,4| 6,24| 14
Anidride acetica / Acetic anhydride| 108-24-7| C4H6O3| 2,52| 2,00| 3,52 ↓| 0,40| 120,0| 12,00| 50
Anilina / Aniline| 62-53-3| C6H7N| 2,61| 1,30| 3,22 ↓| 0,26| 120,0| 12,00| 50
Benzina (verde) / unleaded Gasoline / Petrol| | | 2,20 (4)| 1,20| ≥ 2,5 ↓| 0,24| 110,4| 11,04| 44
Benzolo (Benzene) / Benzene| 71-43-2| C6H6| 2,21| 1,30| 2,67 ↓| 0,26| 110,4| 11,04| 44
Butadiene -1,3 / 1,3-butadiene| 106-99-0| C4H6| 2,24| 2,00| 1,87 ↓| 0,40| 110,4| 11,04| 44
Butano-n / n- Butane| 106-97-8| C 4H10| 1,92| 1,50| 2,05 ↓| 0,30| 99,2| 9,92| 37
Butene -1 / But-1-ene| 106-98-9| C4H8| 1,89| 1,60| 1,93 ↓| 0,32| 99,2| 9,92| 37
Butene -2 (trans) / trans-Butene-2 (trans-but2ene)| 624-64-6| C4H8| 1,66| 1,80| 1,93 ↓| 0,36| 94,4| 9,44| 34
Butene-2 cis (Butene-2) / cis-Butene-2 / cis-but2ene| 590-18-1| C4H8| 1,95| 1,60| 1,93 ↓| 0,32| 104,0| 10,40| 40
Cianogeno / Cyanogen (Ethanedinitrile)| 460-19-5| C2N2| 0,93| 6,00| 1,8 ↓| 1,20| 72,0| 7,20| 20
Cicloesano Cyclohexane| 110-82-7| C6H12| 2,19| 1,20| 2,9 ↓| 0,24| 110,4| 11,04| 44
Ciclopentano / Cyclopentane (C5H10)| 287-92-3| C5H10| 1,62 (4)| 1,40| 2,4 ↓| 0,28| 94,4| 9,44| 34
Ciclopropano / Cyclopropane| 75-19-4| C3H6| 1,34| 2,40| 1,45 ↓| 0,48| 81,6| 8,16| 26
Cloro-benzene / Chlorobenzene| 108-90-7| C6H5Cl| 2,62| 1,30| 3,88 ↓| 0,26| 120,0| 12,00| 50
Cloruro di etile / Chloroethane (Ethyl chloride)| 75-00-3| C2H5Cl| 1,54| 3,80| 2,22 ↓| 0,76| 89,6| 8,96| 31
Cloruro di metile / Chloromethane (Methyl chloride)| 74-87-3| CH3Cl| 1,14| 7,10| 1,78 ↓| 1,42| 72,0| 7,20| 20
Cloruro di metilene / Methylene chloride (Dichloromethane) (5)| 75-09-2| CH2Cl2| 0,90| 15,50| 2,9 ↓| 3,10| 72,0| 7,20| 20
Cloruro di vinile (Cloroetilene) / Vinyl chloride ( 1-Chloroethylene )| 75-01-4| C2H3Cl| 1,78| 3,60| 2,25 ↓| 0,72| 99,2| 9,92| 37
Decano-n / n-Decane| 124-18-5| C10H22| 3,43| 0,80| 4,9 ↓| 0,16| 144,0| 14,40| 65
Dimetilbutano / Dimethylbutane| | C6H14| 2,36| 1,20| 3 ↓| 0,24| 120,0| 12,00| 50
Dimetilidrazina / N,N-Dimethylhydrazine| 57-14-7| C2H8N2| 1,57| 2,40| 2,07 ↓| 0,48| 89,6| 8,96| 31
Diossano / 1,4-dioxane| 123-91-1| C4H8O2| 2,21| 1,90| 3,3 ↓| 0,38| 110,4| 11,04| 44
Eptano-n / Heptane| 142-82-5| C7H16| 2,37| 1,10| 3,46 ↓| 0,22| 120,0| 12,00| 50
Esano-n / Texane| 110-54-3| C6H14| 2,48| 1,20| 2,97 ↓| 0,24| 120,0| 12,00| 50
Etano / Ethane| 74-84-0| C2H6| 1,47| 3,00| 1,04 ↔| 0,60| 89,6| 8,96| 31
Etere etilico / Diethyl ether| 60-29-7| C4H10O| 2,01| 1,90| 2,6 ↓| 0,38| 104,0| 10,40| 40
Etere metiletilico (Etilmetiletere) / Ethyl methyl ether| 540-67-0| C3H8O| 2,03| 2,00| 2,07 ↓| 0,40| 104,0| 10,40| 40
Etere metilico / Dimethyl ether| 115-10-6| C2H6O| 1,68| 3,40| 1,59 ↓| 0,68| 94,4| 9,44| 34
Etilammina / Ethylamine| 75-04-7| C2H5NH2| 1,59| 3,50| 1,56 ↓| 0,70| 89,6| 8,96| 31
Etilbenzolo (Etilbenzene) / Ethylbenzene| 100-41-4| C8H10| 2,45| 1,00| 3,66 ↓| 0,20| 120,0| 12,00| 50
Etilene / Ethylene| 74-85-1| C2H4| 1,59| 2,70| 0,975↑| 0,54| 89,6| 8,96| 31
Etilmercaptano / Ethyl mercaptan (Ethanethiol)| 75-08-1| C2H5SH| 1,54| 2,80| 2,11 ↓| 0,56| 89,6| 8,96| 31
Formiato di metile / Methyl formate| 107-31-3| C2H4O2| 1,63| 4,50| 2,07 ↓| 0,90| 94,4| 9,44| 34
GPL (gas di petrolio liquefatto) / LPG

20÷30% Propano / Propane + 80÷70% Butano / Butane

| | (C3H8)+(C4H10)| 1,92| 2,00| >1,50 ↓| 0,40| 99,2| 9,92| 37
Idrazina / Hydrazine| 302-01-2| N2H4| 1,86| 2,90| 1,1 ↓| 0,58| 99,2| 9,92| 37
Idrogeno / Hydrogen| 1333-74-0| H2| 1,24| 4,00| 0,07 ↑| 0,80| 81,6| 8,16| 26
Idrogeno solforato (acido solfidrico) / Hydrogen sulphide| 7783 06 4| H2S| 2,20| 4,30| 1,2 ↓| 0,86| 110,4| 11,04| 44
iso-Butano / iso-Butane| 75-28-5| C4H10| 2,23| 1,80| 2,01 ↓| 0,36| 110,4| 11,04| 44
isobutilene / isoButylene| 115-11-7| C4H8| 1,72| 1,80| 1,94 ↓| 0,36| 94,4| 9,44| 34
iso-Pentano / iso-pentane| 78-78-4| C5H12| 2,18| 1,40| 2,5 ↓| 0,28| 110,4| 11,04| 44
Metano / Methane| 74-82-8| CH4| 1,00| 4,40| 0,554 ↑| 0,88| 72,0| 7,20| 20
Metilammina / Methylamine| 74-89-5| CH5N| 1,28| 4,90| 1 ↔| 0,98| 81,6| 8,16| 26
Metilcicloesano / Methylcyclohexane| 108-87-2| C7H14| 2,25| 1,15| 3,4 ↓| 0,23| 110,4| 11,04| 44
Methylhexane (5)| | | 2,09| 1,20| 3,4 ↓| 0,24| 104,0| 10,40| 40
Butanone (MEK)| 78-93-3| C4H8O| 2,31| 1,80| 2,48 ↓| 0,36| 110,4| 11,04| 44
Methylhydrazine| 60-34-4| CH6N2| 2,07| 2,50| 1,6 ↓| 0,50| 104,0| 10,40| 40
(Methyl mercaptan)| 74-93-1| CH3SH| 1,41| 3,90| 1,66 ↓| 0,78| 81,6| 8,16| 26
Methylpentane| | C6H14| 2,38| 1,20| 3 ↓| 0,24| 120,0| 12,00| 50
Methyl propyl ketone| 107-87-9| C5H10O| 2,22| 1,50| 2,97 ↓| 0,30| 110,4| 11,04| 44
Nitromethane| 75-52-5| CH3NO2| 1,84| 7,30| 2,11 ↓| 1,46| 99,2| 9,92| 37
Nonane| 111-84-2| C9H20| 3,52| 0,70| 4,43 ↓| 0,14| 144,0| 14,40| 65
Carbon monoxide| 630-08-0| CO| 1,26| 10,90| 0,967 ↔| 2,18| 81,6| 8,16| 26
Ethylene oxide| 75-21-8| C2H4O| 2,05| 3,00| 1,52 ↓| 0,60| 104,0| 10,40| 40
Propylene oxide( 1,2-propylene-oxide)| 75-56-9| C3H6O| 2,28| 2,80| 2 ↓| 0,56| 110,4| 11,04| 44
Ottoano / n-Octane| 111-65-9| C8H18| 3,14| 0,80| 3,93 ↓| 0,16| 144,0| 14,40| 65
Pentano / Pentane| 109-66-0| C5H12| 1,94| 1,40| 2,48 ↓| 0,28| 104,0| 10,40| 40
Pentene-1 / 1-Pentene (5)| 109-67-1| C5H10| 2,07| 1,40| 2,4 ↓| 0,28| 104,0| 10,40| 40
Propano / Propane| 74-98-6| C3H8| 1,95| 2,10| 1,56 ↓| 0,42| 104,0| 10,40| 40
Propilamina-n Propylamina| 107-10-8| C3H9N| 1,82| 2,00| 2,04 ↓| 0,40| 99,2| 9,92| 37
Propyne| 74-99-7| C3H4| 2,03| 1,70| 1,38 ↓| 0,34| 104,0| 10,40| 40
Toluol (Toluene)| 108-88-3| C6H5CH3| 2,37| 1,10| 3,18 ↓| 0,22| 120,0| 12,00| 50
Triethylamine| 121-44-8| C6H15N| 2,22| 1,20| 3,5 ↓| 0,24| 110,4| 11,04| 44
Trimethylamine| 75-50-3| C3H9N| 1,71| 2,00| 2,04 ↓| 0,40| 94,4| 9,44| 34
Xylenes| | C6H4(CH3)2| 2,37| 1,00| 3,66 ↓| 0,20| 120,0| 12,00| 50

Table 4

1| 2 (1)| 3| 4 (2)| 5 (1)| 6 (3)| 7| 8| 9| 10
---|---|---|---|---|---|---|---|---|---
Model and detected Gas| n. CAS CAS No. N° CAS| Molecular formula| __

“K”

| LIE LEL

%vol

| Density

Aria / Air = 1

| 20 %LIE/LEL %vol| TESTmA (TP1/TP2)

mV

| Uscita Output Sortie mA| LIE LEL

%

TS293PS
Stirene / S tyrene| 100-42-5| C2H8| 2,35| 1,10| 3,60 ↑ ↔| 0,22| 120,0| 12,00| 50

NOTE
(1) Data are taken from Annex B) of EN 60079-20-1: 2010
(2) Gain with respect to Methane
(3) Vapor Density as to air
(4) Values obtained from tests
(5)   Data not present in the standards

References

• CPF Tecnocontrol GECA – Official Site

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