The JUMO AQUIS 500 CR is used for conductive measurement of electrolytic conductivity, specific electrical resistivity, or the TDS value.
A 30-day trial version is available for testing the setup software.
This means that all functions of the setup software can be used without restriction for 30 days after the first installation. Setup data transfer and saving of the setup file are automatically blocked after 30 days.
By entering a license number for the full version, the functions of the setup software can be unlocked again without time restriction (even after 30 days).
The software can be downloaded from the JUMO website at
A new document must first be created (File → New). Afterwards you can select whether you want to set the hardware of the device manually (user-defined) or whether the software should automatically detect the device hardware in online mode.
Retrofitting of outputs by the customer is not intended.
The calibration level can be accessed via the administrator level. The default password is 300. To start the calibration via the CAL key, the calibration type of your choice must first be activated in the administrator level under "Calib. Enable".
The TDS value (Total Dissolved Solids) indicates the sum of the dissolved salts (including solids) in the water. The usual units are ppm or mg/l.
The ppm value is calculated as follows:
ppm = factor * value in µS/cm
The factor has an average default value => 0.67.
A four-wire measuring system can cover 90 % of the complete measuring range with one cell constant. However, this also requires higher demands on the transmitter.
The conductive measuring method immerses 2 metal or graphite electrodes in the medium to which voltage is applied.
The applied voltage is an alternating voltage.
Direct voltage cannot be used because a constant current is inevitably associated with decomposition phenomena (polarization phenomena).
The current that is generated is a direct measure of the conductivity prevailing in the medium.
The JUMO AQUIS 500 can be reset to the JUMO default setting in the administrator level. For access enter the number 8192 during code query.
The JUMO AQUIS 500 then performs a reset. This process takes about 10 seconds.
The function should therefore only be used if the complete application-specific configuration is available or if all requirements of the transmitter for the application are known in detail. Presettings from third parties (such as system manufacturers) are reset to the JUMO standard and are thereby lost!
To find out the device software version, press the "PGM" and "up arrow" keys simultaneously.
This setting can be entered under "Basic setting".
Here you can define different settings:
After changing the operating mode the device asks if it should be reinitialized.
If the answer is no the old settings are retained. After initialization the basic settings corresponding to the selected operating mode are applied.