11.2.1 Configurable measuring ranges
Initially the ranges for the four measuring channels can be configured from a list of
nine ranges (* factory default settings).
Description
Range
Exp Meas. range
Units Resolution
1. * Dry temperatur TT, t
B-01
D t
-2
0..+90.00 °C
0.01 K
2. * Humid temperatur HT, t
w
B-09
D tw
-2
0..+90.00 °C
0.01 K
3. * Rel. humidity RH, U
w
mit LK
B-02
D Uw
-1
10... 100.0 %H 0.1 % rH
4. * Atm. pressure AP, p
B-08
D p
-1
300...1100.0 mb
0.1 mbar
5. Dew point DT, t
d
mit LK
B-03
D td
-1
-64.8..+100.0 °C
0.1 K
6. Mixture MH, r mit LK
B-04
D r
-1
0...6500.0 gk
0.1 g/kg
7. Abs. humidity AH, d
v
mit LK
B-05
D dv
-1
0... 596.3 gm
0.1 g/m
3
8. Vapor pressure VP, e mit LK
B-06
D e
-1
300...1100.0 mb
0.1 mbar
9. Enthalpy En, h mit LK
B-07
D h
-1
0...6500.0 kJ
0.1 kJ/kg
The range, the units (2 characters), and a designation are programmed automatically;
this designation comprises the familiar abbreviations listed in tables issued by the
Deutscher Wetterdienst (German Meteorological Service) and the newer symbols de-
fined in VDI/VDE 3514.
11.3 Sensor connection
With stationary psychrometer FNAD846-3 the two NTC sensors for dry temperature
(TT) and humid temperature (HT) are clamped to the appropriate terminals ´TT-Gnd´
and ´HT-Gnd´.
With hand-held psychrometer FNAD846 the sensors are soldered to the plug circuitry
and thus powered via the ALMEMO
®
device.
11.4 Technical data
Psychrometer
Operative range
10 to 100 % RH
Hand-held psychrometer:
up to 60 °C (no ice)
Psychrometer FNAD8463:
up to 90 °C (no ice)
For more technical data see the ALMEMO
®
Manual 3.3.3.2
Atmospheric pressure sensor
Measuring range
300 to 1100 mbar
Accuracy
±2.5 mbar (at 700 to 1100 mbar, at 23°C±5K)
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