Installation; Warning; Test And Calibration - Tecno Control TS220EA Manuel D'utilisation

IST-2220.EA01.01

INSTALLATION

The detector must be accurately installed according to the national dispositions in force on the safety of the plants
and installation of electric devices.
Detector positioning: The
downwards. It should be fixed at 30÷50 cm from the ceeling (the NH
Electrical Connection
Table 1. Normally use a tree wire shielded cable.
the
The terminals (+ - S), are plug-in type, it is necessary to extract them to make the connection. Pay attention when
you insert them again, being polarized.
Note: Dip-Switch should be set with instrument powered off. Dip-Switch 1 settled ON activates ALARM Led indica-
tion (see Table 2) (see also "Operational Description > Faults").
Important: Once installation is completed, it is necessary to adjust the sensor to the environment conditions, con-
nect the unit, wait about 30÷60 minutes and the carry out the "Zero Ad just" (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
400 ohm with 24Vdc power supply

WARNING

Average life: In fresh air and in normal working condition the TS220EA sensor's life is about 2 years. 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 6 or 12 months. Tests, Zero Adjust and Calibration
with NH /Nitrogen mixture as explained on page 4 chapter "Tests and Calibration".
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Note: the detector is not able to detect gas occurring outside the room where it is installed.
Sensor operating limits: the electro-chemical cell, in any case, should not be exposed to temperatures lower
than -40° or higher than 60°C. The electrochemical cell should not be exposed to an over-range concentration of
. If this condition occurs, we suggest replacing the sensor.
300ppm NH
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Safety: electrochemical Cell contains a small quantity of acid. It is possible that either a very strong mechanical
action or an incorrect instrument use beyond the limits of its operational functioning could provoke a liquid leak out
of the sensor. Should this event occurs, please avoid touching the come out liquid. Should a contact with either the
skin or eyes occur, wash immediately and abundantly with water.
Cross sensitivity to other gases: this detector is designed to detect NH
electrochemical cell employed has a good resistance towards products such as sprays, detergents, glues and
paints. However, in case of products containing substances in great quantity, these could interfere with the Sensor
and cause false alarms. We recommend ventilating the room when products like these are used. Alcohols, Hydro-
gen and volatile organic solvents in great quantity cause false alarms, and then the cell needs one or more hours in
clean air to recover the normal sensitivity conditions

TEST and CALIBRATION

PAY ATTENTION: This procedure has to be made with extreme attention by authorized and trained people; be-
cause starting this procedure it will increase mA Output causing the activation of connected alarm devices to the
Gas Central Unit.
Operation Check, Zero Adjust, and Calibration: are different code protected functions. To access these func-
tions is necessary to insert the relevant "Code" through the keys F1s and F2. To have the key pressure recog-
nized, 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.
The Calibration Check is a function code free.
Calibration Kit, Sample Gas Bottles (for Calibration Check and Calibration) please, only using a mixture 100ppm
in Nitrogen. It is possible to use either the disposable one liter cylinders with adjust valve or the high pressure
NH
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ones with reduction gear. Is also necessary the Tecnocontrol Calibration Kit model TC011.
"INSTRUMENT OPERATION CHECK" (Check Code: F2, F2, F1, F1): this function allows to effect a functional test
of the equipment. After having put the system in safety and inserted the "Code Test", all Led are switched off. Then
they will switch on in sequence, the Led, from the yellow up to the red. At the end all the Led will remain lighted for
around 5 seconds, then the central returns at the conditions of normal operation. It is advisable to perform this op-
eration every 6-12 months according to the use.
Note: this function is not working if the red Led have already turned 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 toxic gas or other pollutants). Immediately after having inserted the
"Zero Code", as a confirmation of the operation carried out there will be 1 flash of the red Led and the output will be-
come 4,0 mA. We suggest performing this operation after the installation or after the change of the cartridge and
every 6-12 months based on the environmental conditions.
Note: This function is not working if mA output is more than 4.8 mA (15 ppm NH
ready been switched on. In this case, it will be necessary to recalibrate the unit and/or replacing the "Car-
tridge"
"CALIBRATION" (Calibration Code: F2, F2, F2, F1, F2, F1): this function allows completely recalibrate the sensor.
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI )
Istruzione / User's Manual / Manuel d'utilisation
Fig. 2 shows the instrument size. The unit must be positioned vertically with the sensor
Fig.2): the maximum distance to install each detector from the Central Unit is show in
(see
Fig. 4. The max load resistor is 50 ohm with 12Vdc power supply, while is
fig.4). We suggest using 24Vdc power supply.
(see
gas is lighter than air).
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(see table 2).
leaks at a very low concentration. The
) and/or red Led is al-
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Tel: 02/26 92 28 90 Fax: 02/21 33 734
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