Instruction Manual MM850481 ed. 03a
26
O2 10.9 %
CO2 8.1 %
CO
5.3 %
Tg 123.0°C
EffN --------
EffG --------
REF. O2
–
GRAPHIC
Dilution system can be used to extend the sensor measuring range up to 10%.
7.3
Pressure/Draft measurement
If the internal pressure sensor is installed (Table E=2 on ordering code), you can execute the pressure/draft measurements
using or the standard probe or the special probe.
Standard probe (TG models):
The standard probe has a single gas collector for gas sampling. Usually you have the hose terminal connected to the
instrument gas inlet; when you have to do the draft measurements you have to move the connector to pressure inlet (P IN)
connector.
CAUTION
I
F A SINGLE TUBE GAS SAMPLING PROBE
(TG
MODEL
)
IS USED FOR
P
RESSURE
/
DRAFT MEASUREMENTS
,
BE SURE THAT PROBE AND HOSE
ARE CLEAN AND DRY BEFORE CONNECTION TO THE PRESSURE INPUT
.
Special draft probe (TGD models):
This special probe model has a double gas collector: one for the flue gas analysis and one for the draft measurement. When
you connect the probe to the analyzer you have to insert both gas inlet and pressure inlet connectors. Connect the hose with
line filter to gas inlet connector.
The pressure measurement requires the instrument in normal operating conditions indicating one of the measured or
calculated parameters. Press [
DRAFT
] on the keyboard.
DO NOT INSERT THE PROBE IN THE CHIMNEY
. The internal
pump will stop and the following page will be shown:
F1=Internal sensor
F2=External sensor
`
TaE 23.00
EXT
–
INT
Press
[
MEASURE
] (F1) to show the following page:
DRAUGHT
Measure
1.0 mbar
Press [ENTER]
To save measure
ESCAPE
–
ZERO
Press the [
ZERO
] key before insert the probe in the chimney to zeroing the measured value.
Insert the probe in the chimney. Check for mechanical positioning and flue gas intercepting. Wait for measurement
stabilization.
Press
[
ENTER
] to memory store the pressure and draft values.
