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stakpure digital and analogue conductivity monitoring.

stakpure DC 400. Digital conductivity meter.

Developed for online measurement of pure and ultrapure water downstream of ionexchange cartridges and for monitoring ring-main systems. High-precision conductivity meter ensuring exact measurement of temperature and conductivity for constantly monitoring quality. Digital display guarantees to show readings even at the lowest end of the conductivity measurement range. 

Comes complete with connecting cable, plug-type power supply unit, set of two 1.5 m hoses and measuring cell.

Large graphic display
2-colour, back-lit graphic digital display indicating conductivity in μS/cm or in MΩcm and temperature in °C. Background illumination changes from green to red to signal a fault and show plaintext message.

LED indicators
Show red/green to signalise when limit values are exceeded for temperature and conductivity.

Limiting values
Infinite adjustment of limiting values for temperature and conductivity.

Direct connection of peripheral equipment at potential-free contact.

High-precision measurement
Automatic calibration before each measurement with integrated reference resistor, temperature measured by platinum temperature sensor.

Voltage selection
Automatic voltage selection for international use.


Technical specificationsDC 400
Conductivity measurement range0.1 – 300 μS/cm
(automatically switches over at 9.99)
Temperature measurement range0.1 – 50 °C
Temperature compensationautomatic
Conductivity limiting value setting0.1 – 30 μS/cm, infinitely variable
Temperature limiting value setting1 – 50 °C infinitely variable
Signals on exceeding limiting valuered/green LED indicator + buzzer
(both can be deactivated)
Fault signallingDisplay changes from green to red
Interface (optional only)potential-free contact
Power supply110/230 V/50 – 60 Hz
(automatic voltage selection)
Dimensions mm (W x D x H)73 x 32 x 141
InstallationWall mounting
Connection*R ¾“

UnitDC 400DC 400DC 400
Versionwith potential-free contactwith potential-free contact
+ solenoid valve
Order no.141805001418060014180700
* On request, the conductivity meters can also be equipped with quick-connect couplings.

stakpure AC 100. Analogue conductivity meter.

Conductivity meter as the easy and reliable answer to measuring the conductivity of pure water. Analogue display of measurement value in μS/cm. Either for connecting directly to ion-exchange cartridges or for space-saving wall installation. 

Comes complete with measuring cell and set of two 1.5 m hoses.


UnitAC 100AW 100
Measurement range0.1 – 50 μS/cm0.1 – 50 μS/cm
Power supply230 V/50 – 60 Hz230 V/50 – 60 Hz
Dimensions mm (W x D x H)93 x 123 x 17093 x 125 x 96
Connection*R ¾“R ¾“
Order no.
(for connecting directly to DS 1500 – 15000)
Order no.
(for wall installation only)
* On request, the conductivity meters can also be equipped with quick-connect couplings.


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