Overview Of Controls - TESTO 645 Instruction Manual

Selected
parameter
m/s, mbar
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Connect probe
corresponding to
connection assignment
(rear of instrument)
1.
Current measurement
Select reading in
the first line
Select reading in
the second line
Save manually or automatically,
depending on setting (5.)
Print readings
4.
Parameter settings
The setting functions are activated in accordance with the reading
selected - flashing cursor in display (See 1.):
°C System adjustment with EEPROM probe
(4.1) Reset - system adjustment
% Humidity probe (0636.9740 and 0636.9715)/
(4.2) Checks and adjusts 3-function probe (0635.1540)
td Select calculated humidity parameters: td°C dew point
(4.3) g/m3 - absolute humiidty, g/kg - degree of humidity, J/g - enthalpy
Differential pressure probes: initialisation, activation/deactivation
m/s, m /h in addition to mbar
m3/h
3
(4.4) Velocity probes: activation/deactivation m
Change cross-section input for an activated volume flow measurement
ppm Switch between ppm and vol% with CO
(4.5) Initialisation of CO probe
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Overview of controls

ESC
Location
2. Measurement functions
H
OLD
Freeze values
M
AX
Display maximum values
M
IN
Display minimum values
M •
EAN
Multi-point mean calculation
Update values
Calculate mean
Reset mean
M
EAN
Timed mean calculation
Start and end
Calculate mean
Reset mean
/h in addition to m/s
3
2
8
Testo-Direct
3.
Location
Buttons to
1
select
99 location
Manual
saving
Print
readings
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