Adjusting Humidity Probes; Displaying Calculated Humidity Parameters (Td°C; G/M ; G/Kg; J/G); Switches Co 2 Ppm Vol% (Testo 445) - TESTO 645 Instruction Manual

M.05
MAN
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1:
info@Testo-Direct.com
i
M.05 N.0017
MAN
2: %
10. 1
CAL %
CAL11.3 %
11. 1
NO YES
N.0017
td°C
%
12.9
m/s
15246
td°C g/m
M.05 N.0017
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2: ppm
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ppm vol%
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4. Parameter settings
Adjusting: humidity probes / humidity parameters /
The setting functions are activated in accordance with reading
selected - flashing cursor in display.

Adjusting humidity probes

Monitoring and adjusting humidity probes
(0636.9740/0636.9715) or 3-function probe (0635.1540).
To carry out the adjustment, immerse the probe in the
adjustment container belonging to the control and
adjustment set (Part no. 0554.0660). Observe the
instructions given in the Instruction manual (0973.1820)!
NO flashes  No adjustment.
YES flashes   The probe is adjusted.
 Switch to YES/NO
Confirm selelction and return to measurement.
Displaying calculated humidity parameters.
If Testo`s combination humidity probe (e.g. 0636.9740) is
connected, testo 445 and testo 645 display a calculated humidity
parameter in addition to temperature and relative humidity. You
can select from the following parameters:
3
td°C g/m g/kg J/g
Dew point Absolute Degree
temperature humidity of humidity
Degree of humidity and enthalpy are pressure-dependent
parameters. Absolute pressure has to be set (See 6. Instrument
configuration -Parameter setting).
The respective selected parameter flashes.
 Select
 C onfirm selection and return to measurement..
The selected humidity parameter is displayed.
Switch between ppm and vol% if a CO
(only possible in a testo 445 instrument).
ppm vol% ppm ...
The respective selected parameter flashes.
 Select
Confirm selection and return to measurement.
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ppm vol%

td°C ...
Enthalpy
probe is connected
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