Installation; Warning; Test And Calibration - Tecno Control TS282IC2 Manuel D'utilisation

IST-2282.IC01.01
passes through the gas to be measured, and arrives at the detector. The detector is double, the first, defined as
"active", has an optical filter, selective to the gas to be measured, while the second, called "reference" has a filter
with a different wavelength. The active detector is used to detect the gas, while the reference detector provides the
"zero" value. The difference signal between the two detectors provides the value of the gas concentration. The ad-
vantage of this technique is that it is selective for gases such as carbon dioxide, which is difficult to measure with
other methods, and also has the advantage of compensating, in time, the changes of detector sensitivity. The only
interference, may be given from presence of water vapour, which absorbs infrared.
Preheating: when powered, the sensor needs a time of preliminary heating of about 60 seconds. During this peri-
od the yellow LED "FAULT" flashes. After this period, the yellow LED light off, the green LED "ON" illuminates to in-
dicate normal functioning. After this period the unit is able to detect gas even if it attains the optimum stability con-
ditions after about 10÷30 minutes continual functioning.
Normal operation: the green LED "ON" should be light on.
Alarm: when the gas concentration exceeds the value indicated in the table, the
red LED illuminates (only if it be activate by Dip-Switch).
Faults: the Yellow LED (FAULT) illuminates and the "S" output falls down to 0mA. (The different faults are listed below).
Yellow LED illuminates each 3 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 in
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
communication or uncorrected) 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
(see on page 1). 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 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.

INSTALLATION

The gas 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. 1 shows the instrument size. The unit must be positioned vertically with the sensor downwards.
Models TS282IC2 and TS282IC2-H should be fixed at 20-30 cm from the floor (CO
Electrical Connection (see
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
Important: Once installation is completed, power up the unit, it is not necessary to make any adjustment. Wait
about 20 to 30 minutes and then, only if it is requested, carry out the Operation Check
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, the sensor's life is about
5 years from the date of installation. After this period the yellow LED "FAULT" flashes every 3 seconds, and then is
necessary replacing the "Cartridge Sensor".
Periodical testing: depending on the use, we advise to carry out working tests every 6÷12 months. 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.
Warning: Consider that in polluted environments or with temperature and pressure more than the declared limits,
the useful life of the sensor can be reduced.

TEST and CALIBRATION

PAY ATTENTION: following tasks should be performed with attention and by competent and trained per-
sonnel; because starting this procedure it will cause the activation of connected alarm devices.
Operation Check, ZERO Calibration and SPAN 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 rec-
ognized, 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 Cylinders (for Calibration Check and Calibration) please, only using a mixture:
MODEL
TS282IC2
TS282IC2-H
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI ) ITALY
Istruzione / User's Manual / Manuel d'utilisation
Table 3 (2nd column). The replacement procedure is described in the attached manual.
(see Table 2). 2) The "Cartridge Sensor" is not working, (fault sensor or its connection, no
Fig.2): the maximum distance to install each detector from the Gas Central Unit is show
2).
Fig. 4. We suggest using 24Vdc power supply.
Sample Gas Cylinder for SPAN Calibration
5% Volume Carbon dioxide (CO
5000 ppm Carbon dioxide (CO
) in nitrogen
2
) in nitrogen
2
Tel. +39 02 26922890 - Fax +39 02 2133734
Pag.5/10
TS282IC2 TS282IC2-H
0,5%vol CO 2500 ppm CO
2
gas is heavier than air).
2
(see 'Test and Calibration).
Tecnocontrol Code
Available on request
Available on request
2