TECNOCONTROL S.r.l. - Via Miglioli, 47 20090 SEGRATE (MI) - Tel. 02/26922890 - Fax 02/2133734
http: www.tecnocontrol.it e-mail: info@tecnocontrol.it
EN
IST-2236.ZO01.02/A
File: IST-2236.ZO01.02-A_TS236-TS237 (EN).doc
OXYGEN
TRANSMITTER
TS236
flue gases temperature up to 300°C
TS237
flue gases temperature up to 600°C
USER INSTRUCTIONS
IST-2236.ZO01.02/A User Instructions Page 2/4
TECNOCONTROL S.r.l. - Via Miglioli, 47 20090 SEGRATE (MI) - Tel. 02/26922890 - Fax 02/2133734
CONTENTS
TECHNICAL CHARACTERISTICS ............................................................ 2
O2 ZIRCONIUM OXIDE SENSOR (TS236 Probe) ........................................................ 2
SERVICE ................................................................................................... 2
DESCRIPTION ........................................................................................... 2
INSTALLATION ......................................................................................... 3
EXTERNAL CONNECTIONS .................................................................... 3
UNIT USE .................................................................................................. 4
SERVICE INSPECTIONS .......................................................................... 4
O2 SENSOR CALIBRATION CHECK ............................................................................. 4
PROBE BODY CLEANING ............................................................................................ 4
TECHNICAL CHARACTERISTICS
O2 ZIRCONIUM OXIDE SENSOR (TS236 Probe)
• Power Supply: 230 Vac
• Output: 4÷20 mA (0-25% O2)
• Measuring range: 0-25%
• Resolution: 0.1%
• Calibration: automatic
• Working Temperature: Probe 0 / +800°C
TS236 - Standard Probe Body 300°C
TS237 High Temperature Probe Body 600°C
• Response Timing T90: < 10 seconds
• Repeatability: 1% on signal
• Medium Life: >160.000 Hours
SERVICE
We suggest to allow service inspections only to trained and qualified people,
especially for sensors test and calibration.
On demand TECNOCONTROL is able to offer programmed service agreements each
six months (beginning and half season) or once a year depending on the type of boiler
and its use.
The service normally includes functioning tests of the unit, test and calibration of
Oxygen sensor, replacement (when necessary) of O2 sensor.
Documento / Document name: IST-2236.ZO01.02-A_TS236-TS237 (EN).doc
Oggetto / Subject : TS236-TS237 (EN)
Rev. Data / Date Da / By Note
A 07/05/2007 UT/FG Aggiunta Intestazione Sonda TS237
IST-2236.ZO01.02/A User Instructions Page 3/4
TECNOCONTROL S.r.l. - Via Miglioli, 47 20090 SEGRATE (MI) - Tel. 02/26922890 - Fax 02/2133734
DESCRIPTION
The transmitter is used for measuring Oxygen (O2) concentration into flue gases.
TS236 model is supplied with a standard Probe Body supporting flue gases temperature up to 300°C.
TS237 model is supplied with a standard Probe Body supporting flue gases temperature up to 600°C.
Consider that this instrument has not been designed as a security control system, therefore, if used for
the control of air as supporter of combustion, you need all possible measures to avoid danger
situations or whole plant stop in case of its fault.
The Oxygen Transmitter is composed by aluminium housing with dimensions 210 x 110 x 120 mm with
protection range IP55. Inside the housing there are: the power supply circuit, the oxygen concentration
measuring circuit and the terminals for the external connections. The probe is connected to the
housing by 1 meter cable.
INSTALLATION
The Oxygen Transmitter unit has to be installed near the boiler to analyze. The Oxygen probe has to
be placed on the chimney pipe fitting to a distance equivalent to two diameters of the pipe fitting itself.
The distance between the probe and the housing is bound by the 1 meter cable connection.
230Vac
TS236 Oxygen PROBE
If the chimney pipe fitting is too short, you can fix the probe directly on the chimney to a distance
equivalent to two diameters of itself from the connection to the pipe fitting.
230Vac
TS236 Oxygen PROBE
EXTERNAL CONNECTIONS
Connections to the Oxygen Transmitter terminal are for the power supply and for the 4÷20mA Output.
TS236 Oxygen (O2) Probe Power Supply
Terminal Connection Cable
L Connect to "L" 230V of TS236 Oxygen Probe Black 1,5 mm2
T Ground Terminal Yellow/Green1,5 mm2
N Connect to "N" 230V of TS236 Oxygen Probe Blue 1,5 mm2
- "-" 4÷20mA of TS236 Oxygen O2 Probe 2 x 0,75 mm2
+ "+" 4÷20mA of TS236 Oxygen O2 Probe Shielded
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
Alluminium Housing
+
-
Power Supply
230V-50Hz -22 VA
Output
4÷20mA
Fuse 1A
N T L - +
Cable L = 1 meter
Flue gases direction
Male Screw thread 1”½
Fixing dowel
TS236 Oxygen Probe
Probe Body max.300°C
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)
1 meter Length Cable
Flue gases direction
Fixing Dowel
Probe Body 600°C
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
O2 SENSOR CALIBRATION CHECK
Oxygen Sensor automatically calibrates itself; to check the O2 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 O2 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% O2).
• 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 O2 transmitter circuit
up to obtain the mA value correspondant to the used concentration bottle (example: if the certificate
of the bottle says O2 at 2,0% the correspondant mA value has to be about:
,6mA5 4 2,0) x
20
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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