5 Device description
14
5.1.2
Conductivity/ concentration transmitter
Concentration
measurement
(implemented in
the device
software)
- NaOH (caustic soda)
0 — 15 % by weight or 25 — 50 % by weight
- HNO
3
(nitric acid); check chemical resistance of the sensor !
0 — 25 % by weight or 36 — 82 % by weight
- customer-specific concentration curve
freely programmable through the setup program (see “special functions”)
Calibration
timer
adjustable: 0 — 999 days (0 = off)
Output
signal
Conductivity/
concentration
0 — 10 V / 10 — 0 V
2 — 10 V / 10 — 2 V
0 — 20 mA / 20 — 0 mA
4 — 20 mA / 20 — 4 mA
The output signal is freely scalable.
Burden
≤
500
Ω
for current output
≥
2k
Ω
for voltage output
Analog output
for “Alarm”
Low (0 mA / 0 V / 3.4 mA / 1.4 V) or
High (22.0 mA / 10.7 V) or
a value with a fixed setting (safe value)
Measuring
ranges
Four ranges can be selected.
One of these ranges can be activated via an external switch or a PLC.
1
not compensated for temperature
Note:
The overall tolerance is made up of the tolerance of the trans the
tolerance of the sensor.
Measurement ranges
Transmitter
Tolerance
(in % of range
span)
0 — 500 µS/cm
≤
0.5%
0 — 1000 µS/cm
0 — 2000 µS/cm
0 — 5000 µS/cm
0 — 10 mS/cm
0 — 20 mS/cm
0 — 50 mS/cm
0 — 100 mS/cm
0 — 200 mS/cm
0 — 500 mS/cm
0 — 1000 mS/cm
0 — 2000 mS/cm
1
All manuals and user guides at all-guides.com
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