Installation; Warning; Test And Calibration - Tecno Control TS293PE Manuel D'utilisation

IST-2293.PX04.01/B

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)
Electrical Connection
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

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; be-
cause 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 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, 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 opera-
tion 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.
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI )
Istruzione / User's Manual / Manuel d'utilisation
Fig.2): the maximum distance to install each detector from the Gas Central Unit is show
(see
Fig. 4. We suggest using 24Vdc power supply.
20%LEL (0.88% volume) Methane in Air (20.9% Oxygen)
(see Table 3 and 5 column n.4).
Tel: 02/26 92 28 90 Fax: 02/21 33 734
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