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Temperature
compensation
Reference temperature
Measuring cells
Cell constant
Salinity measurement
Common data
Temperature
measurement
Inputs
combined electrode
pH/mV input
temperature sensor
conductivity input
socket for power
supply
BA61103/08.00/Pro/MultiLab540-1
Technical data
automatically with NTC, 3 modes
a)
linear compensation with adjustable coefficient
0.500 %/K ... 3.500 %/K in the temperature range -5°C ... +90°C
b)
non-linear compensation with fixed coefficient for natural water complying with DIN
38404 and function for neutral pure water in the temperature range +5°C ... +35°C
(extended range for +35°C ... +50°C; not DIN, but WTW tested)
c)
no compensation
20 °C or 25 °C
®
TetraCon
325, TetraCon
LR 325/01, LR 325/001
KDU 1/T and KDU 1/TH with cable KKDU 325
adjustable
4.00 /cm ... 15.00 /cm
0.400 /cm ... 1.500 /cm
fixed:
0.100 /cm and 0.010 /cm
range:
0.0 ... 70.0
resolution:
0.1
accuracy (condition: calibration to 35.0):
±0.1 in the range 0.0 ... 42.0 / 5 °C ... 25 °C
±0.2 in the range 0.0 ... 42.0 / 0 °C ... 5 °C
±0.2 in the range 0.0 ... 42.0 / 25 °C ... 30 °C
better 3 % of measured value in the range 42.0 ... 70.0
temperature probe:
TFK 325 as separate probe for pH or NTC integrated in pH electrode/ conductivity cell
or: Pt 1000 (only pH measurement)
automatic detection of probe type
manual temperature input with not connected temperature probe
(input range: -20°C ... +130°C)
range:
resolution:
accuracy (instrument):
plug according to DIN 19262 or WTW plug according to IP 67
input resistance: > 1 ⋅ 10
5 ⋅ 10 -
input current:
4 mm jack,
- TFK 325 as separate probe or 30 Kohm NTC integrated in pH electrode
- Pt 1000 as separate probe or integrated in pH electrode
- automatic detection of connected probe type
- manual temperature input with not connected temperature probe
(input range:
-20°C ... +130°C)
8 pin special socket
4 pin special socket for line adapter.
®
325 Pt
-5°C ... +99.9°C
0.1 K
±0.1 K ±1 digit with ambient temperature 15°C ... 35°C
12
Ohm
A typical < 2 ⋅ 10 -
13
12
A at 25°C
89
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