IST-2220.EC04.01/D
Istruzione / User’s Manual / Manuel d’utilisation
Pag. 10/17
TECNOCONTROL S.r.l. - Via Miglioli, 47 20090 SEGRATE (MI) ITALY
Tel. +39 02 26922890 - Fax +39 02 2133734
Cross sensitivity to other gases:
this detector is designed to detect gas leaks at a very low concentration. The
electrochemical cells employed have 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 and by authorized and trained people;
because starting this procedure it will increase mA output causing the activation of connected alarm devices.
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 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.
The
Calibration Check
is a function code free.
Calibration Kit, Sample Gas Bottles
(
for Calibration Check and Calibration
) the mixture to be used depending on the
model installed is shown in the table below:
MODEL
Sample gas bottle
Our Code
KIT Code
TS220EA - TS220EA-H
100 ppm
Ammonia (NH
3
)
in Nitrogen
Available on request
TC014
TS220EC-S - TS220EC-H
300 ppm
Carbon monoxide (CO)
in Nitrogen
BO210
TC011/TC014
TS220ES
10 ppm
Sulphur dioxide (SO
2
)
in Nitrogen
Available on request
TC014
TS220EH
50 ppm
Hydrogen sulphide (H
2
S) in Nitrogen
Available on request
TC014
TS220EHCN
10 ppm
Hydrogen cyanide (HCN) in Nitrogen
Available on request
TC014
TS220EN
100 ppm
Nitric oxide (NO)
in Nitrogen
Available on request
TC014
TS220EN2
30ppm
Nitrogen dioxide (NO
2
)
in air
Available on request
TC014
TS220EHCL
10ppm
Hydrogen cloride (HCL)
in Nitrogen
Available on request
TC014
TS220ECL
10ppm
Nitrogen dioxide (NO
2
)
in air
Available on request
TC014
It is possible to use either the
disposable cylinders with adjust valve
or the high pressure ones with reduction
gear. Some cylinders have a fixed flow reducers, make the necessary value in
Table, column 3, page 11
. Is also nec-
essary the
Tecnocontrol calibration kit model TC014 (Inox)
. To ensure that the gas concentration reaches sen-
sor, use steel reduction gear and Teflon tubes or other compatible materials which do not disperse gas.
“INSTRUMENT OPERATION CHECK” (
Check Code
: F2, F2, F1, F1)
:
this function allows to effect a functional test
of the detector. After having inserted the "
Check C
ode
", all Led are switched off. Then Led will switch on in se-
quence, from the yellow up to the red. At the end all the Led will remain lighted for around 5 seconds, then the de-
tector 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 toxic gas or other pollutants
). Consider that the TS220E series have a sophisti-
cated 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 envi-
ronmental 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 higher than the value shown in the table below, depending on the
model, or if the red Led is already ON. In this case, please recalibrate the unit and/or replacing the “
Cartridge
”.
TS220EA
TS220EA-H
TS220EC-S
TS220EC-H
TS220ES
TS220EH
TS220EHCN
TS220EN
TS220EN2
TS220EHCL
TS220ECL
4,8 mA
15ppm NH
3
4,8 mA
15ppm CO
6,4 mA
3ppm SO
2
4,8 mA
5ppm H
2
S
8 mA
2,5ppm HCN
5,6 mA
10ppm NO
6,6 mA
5ppm NO
2
8 mA
2,5ppm HCL
4,8 mA
0,5ppm HCL
“CALIBRATION” (
Calibration Code
: F2, F2, F2, F1, F2, F1)
:
this function allows completely recalibrate the sensor
using the gas mixture indicated above.
Warning
:
to guarantee that no errors of elaboration happen, the possibility exists that during the Calibration the yel-
low Led switch off every 8 seconds, in this case interrupt the procedure, switch off and switch 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 toxic 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. In-
sert the TC014 on the sensor holder and adjust the influx of the gas the way that the flow meter reaches the value
indicates in table below in
column 3
, depending on the model (
see also Fig.3
).
Wait around 3÷5 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 5-6 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 TC014
. At this point we can have two possibilities:
Yellow and green Led illuminates:
the calibration routine is correct.
Wait 8 seconds, until the instrument auto-
matically restores the normal working conditions
.
(
See “
Operational Description > Preheating
”
).
