wtw pH 323 Bedienungsanleitungen Seite 47

Data storage
Display
Keyboard
Inputs
combined electrode or
meas. electrode
temperature sensor
charging socket
Outputs
analog output
(pH 323 only)
BA12204/05.95/Pap/pH323-325-SET-2
Technical data
Ring memory
Number of values: 50 pairs
Output:
Data protection:
WTW-specific LCD-display
height: 35 mm
Field with 9 keys
plug acc. to DIN 19262
WTW-plug acc. to IP 66
input resistance: > 1 ⋅ ⋅ 10
input current:
4 mm banana-plug socket
TFK 150 as separated probe or NTC integrated
in pH electrode
Pt 1000 as separated probe or integrated in pH-
electrode
automatic detection of connected probe type
manual temperature input with not connected
temperature (input range: - 20°C ... + 130°C)
2-pin socket with pin contacts for charger
voltage: 12 V
current: 70 mA
4-pin socket with pin contacts for
recorder cable AK 323
output signal corresponds to
Accuracy:
Internal resistance:
Display,
RS 232-interface
any long
breadth: 60 mm
12
Ohm
< 1 ⋅ ⋅ 10
-12
electrode voltage,
i.e. 50 - 60 mV/pH-unit
± 0.1 % of meas. value ± 4 mV at
ambient temperature -10°C ... +55°C
< 1 Ohm (current limit max. 0.2 mA
offset current)
A
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