IST-2236.ZO01.02/A User Instructions Page 4/4
TECNOCONTROL S.r.l. - Via Miglioli, 47 20090 SEGRATE (MI) - Tel. 02/26922890 - Fax 02/2133734
length 400mm
Installed in the Chimney
TS236 Probe is supplied with a standard Probe Body supporting flue gases temperature up to 300°C.
On demand it is available another one up to 600°C (See Drawing below)
Length 400mm
Installed in the Chimney
Flange DN40 - UNI 6091
UNIT USE
Oxygen Transmitter Unit, when switched on, needs about 30÷40 seconds to stabilize. After this time,
the probe (automatically calibrated) is able to start measuring Oxygen concentration into the flue
gases.
SERVICE INSPECTIONS
O
2
SENSOR CALIBRATION CHECK
Oxygen Sensor automatically calibrates itself; to check the O
2
sensor calibration it is necessary:
• Unthread the Probe Body from the chimney.
• Verify that after 1-3 minutes in clean air, the output is about 20mA that correspond to 20,9%
Oxygen. In case you don’t see this value turn the SPAN trimmer of the O
2
transmitter circuit (Placed
inside the aluminium housing) up to obtain the right value (20mA).
Check and/or calibration for the “ZERO” point:
• With a gas bottle at a know Oxygen concentration (about 2% O
2
).
• Give gas to the sensor (TECNOCONTROL Service Department uses a particular connector). After
1÷3 minutes, necessary to stabilize the sensor, turn the ZERO trimmer on the O
2
transmitter circuit
up to obtain the mA value correspondant to the used concentration bottle (example: if the certificate
of the bottle says O
2
at 2,0% the correspondant mA value has to be about:
,6mA5 4 2,0) x
16
( =+
PROBE BODY CLEANING
Periodically, at least once a year, unthread the Probe Body from the Chimney and check that it is clean
and that the holes are not obstructed by combustion residual, if necessary clean it blowing with
compressed air.
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