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IST-2293.PM02.01/B
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
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 concentra-
tion 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 gas detector must be accurately installed and testing according to the national dispositions in force on the safe-
ty of the plants and installation of electric devices in areas with danger of explosion.
Mounting: The
shows the instrument size. The unit must be positioned vertically with the sensor downwards.
Fig. 2
Models TS293PG and TS293PB should be fixed at 20-30 cm from the floor (LPG and Petrol vapours are heavier than air).
Models TS293PM and TS293PI should be fixed at 20-30 cm from the ceiling (Methane and Hydrogen are lighter than air).
Model TS293PX 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)
Electrical Connection
(see
in
1. Normally use a tree wire shielded cable.
table
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"
COMPATIBILITY WITH OTHER CENTRAL UNITS: In case of a central unit other then Tecnocontrol, please verify
the max load resistor as shown in
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 or 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 vapors 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, 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.
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 press-
ing 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
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 se-
quence, from the yellow up to the red. At the end all the LEDs will remain lighted for around 5 seconds, and then the
detector returns at the conditions of normal operation. It is advisable to perform this operation every 12 months ac-
cording 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 op-
eration after installation or after changing the " Cartridge " or every 6-12 months depending on environmental condi-
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI )
Istruzione / User's Manual / Manuel d'utilisation
(see on page
Fig.2): the maximum distance to install each detector from the Gas Central Unit is show
Fig.
4. We suggest using 24Vdc power supply.
20%LEL (0.88% volume) Methane in Air (20.9% Oxygen)
1) these checks are made connecting and disconnecting the
(see Table 3 – column
(see 'Test and
Tel: 02/26 92 28 90 Fax: 02/21 33 734
Pag.5/10
n.4).
Calibration).
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