All frequently asked questions about the products Microprocessor-based transmitter/controller JUMO dTRANS pH 01, dTRANS Rd 01, JUMO dTRANS Lf 01, JUMO dTRANS Rw 01, Inductive conductivity/concentration and temperature transmitter JUMO CTI-500
In configuration level C211- Controller options, set limit value controller for K1 and K2.
C211- 11xx
In configuration level C212 – Controller outputs, ensure that MIN/MAX and NOC/NCC is set.
C212 – xx10
In configuration level C213 – Other outputs I, the alarm monitoring of relays K1 and K2 is activated for the set point values respectively set.
C213 xxx0
In configuration level C214 – Other outputs II, activate the function (limit value controller) set in configuration level C211-11xx.
C214 – xx11
Note: For this, also refer to chapter 14 Configuration level in the operating instructions Type 202530.
Calibration of the relative cell constant or determination of the
temperature coefficient of the medium to be measured was completed with
an error. The previous data is saved.
The factory data is displayed (Cell = 100%, ALPH= 2.3).
To remedy the 'ERR' error message, manually change the two parameters
using the keyboard (e.g. change by one digit up or down and confirm with
the PGM key) or re-calibrate the system.
Ensure that the device is equipped with the respective analog output.
For this purpose, check the type designation of the device.
Refer to chapter 4.1, Type explanation, in the operating instructions.
To be able to carry out settings in the two levels, enter the respective CODE for activation first.
Start situation > Measuring mode > Repeatedly press the PGM key until CODE appears. Set the respective CODE by pressing the UP/DOWN keys. Press the PGM key to confirm.
The display returns to 0000. Now, the corresponding level (parameter) can be selected. The code has been entered correctly when the decimal point flashes during entry.
| Function | Code |
| Unlock the operator level, CAL and manual activation of Hold. | 0110 |
| Unlock the operator and parameter level. | 0220 |
| Unlock all levels. | 0300 |
The setting N/O / N/C for the two contacts K1 and K2 can be changed in
the configuration level under point C212 (controller outputs).
Both contacts are factory set to NOC.
NOC: (N/O) The corresponding output is active (closed) as long as the switching condition is fulfilled.
NCC: (N/C) The corresponding output is active (closed) as long as the switching condition is not fulfilled.
The configuration level C212 (controller outputs) can be used to change the Min/Max behavior for the two contacts K1 and K2.
MIN contact: The switching condition is fulfilled when the actual value is lower than the set point value.
MAX contact: The switching condition is fulfilled when the actual value exceeds the set point value.
The Redox value can also be preset with a pH simulator as for the pH
measurement. Then the Redox value can be read from a table contained in
the simulator operating instructions. If the simulator is not available,
it is possible to directly supply voltage to the device input (BNC
socket) and, to check the coax cable, to the end of the cable.
The Rd value can be read on the device according to the voltage.
The device should have the factory settings and should not display any error messages.
| pH value |
Voltage |
| 2 pH | +295,8 mV |
| 4 pH | +177,48 mV |
| 7 pH | 0 mV |
| 10 pH | -177,48 mV |
| 10 pH | -295,8 mV |
To be able to start calibration, activate the controller.
Start situation > Measuring mode > Repeatedly press the PGM key until CODE appears > Enter 0300 and confirm with PGM > Press the Exit key once > Simultaneously press the PGM + Down key.
A temperature of 25.0 appears in the top (red) display, °C appears in the bottom (green) display, the decimal point in the bottom display flashes.
In most cases, using the factory settings for commissioning/start-up is sufficient.
If these settings do not comply with the desired control behavior, we
recommend to change only one parameter at a time. If the control
behavior does not improve, reset the parameter changed previously before
changing the next one.
For the respective parameters, please refer to the operating
instructions, chapter 22.1, Programming the controller (parameter
level).
Calibration of the relative cell constant or determination of the temperature coefficient of the medium to be measured was completed with an error. The previous data is saved.
The factory data is displayed (Cell = 100%, ALPH= 2.3).
To remedy the 'ERR' error message, manually change the two parameters using the keyboard (e.g. change by one digit up or down and confirm with the PGM key) or re-calibrate the system.
Ensure that the device is equipped with the respective analog output.
For this purpose, check the type designation of the device.
Refer to chapter 4.1, Type explanation, in the operating instructions.
To be able to carry out settings in the two levels, enter the respective CODE for activation first.
Start situation > Measuring mode > Repeatedly press the PGM key
until CODE appears. Set the respective CODE by pressing the UP/DOWN
keys. Press the PGM key to confirm.
The display returns to 0000. Now, the corresponding level (parameter)
can be selected. The code has been entered correctly when the decimal
point flashes during entry.
| Function | Code |
| Unlock the operator level, CAL and manual activation of Hold. | 0110 |
| Unlock the operator and parameter level. | 0220 |
| Unlock all levels. | 0300 |
The setting N/O / N/C for the two contacts K1 and K2 can be changed in
the configuration level under point C212 (controller outputs).
Both contacts are factory set to NOC.
NOC: (N/O) The corresponding output is active (closed) as long as the switching condition is fulfilled.
NCC: (N/C) The corresponding output is active (closed) as long as the switching condition is not fulfilled.
The configuration level C212 (controller outputs) can be used to change the Min/Max behavior for the two contacts K1 and K2.
MIN contact: The switching condition is fulfilled when the actual value is lower than the set point value.
MAX contact: The switching condition is fulfilled when the actual value exceeds the set point value.
The Redox value can also be preset with a pH simulator as for the pH
measurement. Then the Redox value can be read from a table contained in
the simulator operating instructions. If the simulator is not available,
it is possible to directly supply voltage to the device input (BNC
socket) and, to check the coax cable, to the end of the cable.
The Rd value can be read on the device according to the voltage.
The device should have the factory settings and should not display any error messages.
| Rd value |
Voltage |
| -500 | -500 mV |
| 0 | +0 mV |
| +500 | +500 mV |
To be able to start calibration, activate the controller.
Start situation > Measuring mode > Repeatedly press the PGM key until CODE appears > Enter 0300 and confirm with PGM > Press the Exit key once > Simultaneously press the PGM + Down key.
A temperature of 25.0 appears in the top (red) display, °C appears in the bottom (green) display, the decimal point in the bottom display flashes.
The error messages F022 and F023 indicate that the measuring range is gone below or exceeded.
Hold is additionally displayed. In this case, we recommend to check the correct actual value recording.
Check the measuring cell, cables, connectors and the set measuring range
"ranG“ with the cell constant specified on the measuring cell.
Calibration of the relative cell constant or determination of the
temperature coefficient of the medium to be measured was completed with
an error. The previous data is saved.
The factory data is displayed (Cell = 100%, ALPH= 2.3).
To remedy the 'ERR' error message, manually change the two parameters
using the keyboard (e.g. change by one digit up or down and confirm with
the PGM key) or re-calibrate the system.
Ensure that the device is equipped with the respective analog output.
For this purpose, check the type designation of the device.
Refer to chapter 4.1, Type explanation, in the operating instructions.
To be able to carry out settings in the two levels, enter the respective CODE for activation first.
Start situation > Measuring mode > Repeatedly press the PGM key
until CODE appears. Set the respective CODE by pressing the UP/DOWN
keys. Press the PGM key to confirm.
The display returns to 0000. Now, the corresponding level (parameter)
can be selected. The code has been entered correctly when the decimal
point flashes during entry.
| Function | Code |
| Unlock the operator level, CAL and manual activation of Hold. | 0110 |
| Unlock the operator and parameter level. | 0220 |
| Unlock all levels. | 0300 |
The setting N/O / N/C for the two contacts K1 and K2 can be changed in
the configuration level under point C212 (controller outputs).
Both contacts are factory set to NOC.
NOC: (N/O) The corresponding output is active (closed) as long as the switching condition is fulfilled.
NCC: (N/C) The corresponding output is active (closed) as long as the switching condition is not fulfilled.
The configuration level C212 (controller outputs) can be used to change the Min/Max behavior for the two contacts K1 and K2.
MIN contact: The switching condition is fulfilled when the actual value is lower than the set point value.
MAX contact: The switching condition is fulfilled when the actual value exceeds the set point value.
The actual value can be preset by an Lf simulator. If the simulator
is not available, it is possible to connect a resistance via a fixed
resistor to the two input terminals of the device and, to check the
cable, to the end of the cable.
The actual value can be read on the device according to the resistance.
The required resistance can be calculated using a formula.
The device should have factory settings and should not display any error message.
For example:
Measuring range 0...100uS
Desired displayed value 50uS
Cell constant K=0.1
R (measuring cell resistance) = 0.01 (cell constant K)
5 uS (desired displayed value)
This results in a measuring cell resistance R of 2000 Ohm, which has to be connected to the two terminals 6 and 7.
To be able to start calibration, activate the controller.
Start situation > Measuring mode > Repeatedly press the PGM key
until CODE appears > Enter 0300 and confirm with PGM > Press the
Exit key once > Simultaneously press the PGM + Down key.
A temperature of 25.0 appears in the top (red) display, °C appears in
the bottom (green) display, the decimal point in the bottom display
flashes. Refer to the operating instructions for the further procedure.
Measurement and calibration must be carried out in a closed measuring circuit or in a closed container.
Any contact of the medium to be measured with the atmosphere results in a notable change of its conductivity.
For this, we recommend to use a measuring cell with ASTM inspection certificate.
Calibration of the relative cell constant or determination of the
temperature coefficient of the medium to be measured was completed with
an error. The previous data is saved.
The factory data is displayed (Cell = 100%, ALPH= 2.3).
To remedy the 'ERR' error message, manually change the two parameters
using the keyboard (e.g. change by one digit up or down and confirm with
the PGM key) or re-calibrate the system.
Ensure that the device is equipped with the respective analog output. For this purpose, check the type designation of the device.
Refer to chapter 4.1, Type explanation, in the operating instructions.
Configuration level C213 - Other outputs I is set.
Actual value output 2 is set in configuration level C214 - Other outputs II.
The scaling is set under the parameters SOL and SOH.
To be able to carry out settings in the two levels, enter the respective CODE for activation first.
Start situation > Measuring mode > Repeatedly press the PGM key
until CODE appears. Set the respective CODE by pressing the UP/DOWN
keys. Press the PGM key to confirm.
The display returns to 0000. Now, the corresponding level (parameter)
can be selected. The code has been entered correctly when the decimal
point flashes during entry.
| Function | Code |
| Unlock the operator level, CAL and manual activation of Hold. | 0110 |
| Unlock the operator and parameter level. | 0220 |
| Unlock all levels. | 0300 |
The setting N/O / N/C for the two contacts K1 and K2 can be changed in
the configuration level under point C212 (controller outputs).
Both contacts are factory set to NOC.
NOC: (N/O) The corresponding output is active (closed) as long as the switching condition is fulfilled.
NCC: (N/C) The corresponding output is active (closed) as long as the switching condition is not fulfilled.
The configuration level C212 (controller outputs) can be used to change the Min/Max behavior for the two contacts K1 and K2.
MIN contact: The switching condition is fulfilled when the actual value is lower than the set point value.
MAX contact: The switching condition is fulfilled when the actual value exceeds the set point value.
The actual value can be preset by an Lf simulator. If the simulator
is not available, it is possible to connect a resistance via a fixed
resistor to the two input terminals of the device and, to check the
cable, to the end of the cable.
The actual value can be read on the device according to the resistance.
The required resistance can be calculated using a formula.
The device should have factory settings and should not display any error message.
For example:
Measuring range 0...100uS
Desired displayed value 50uS
Cell constant K=0.1
To be able to start calibration, activate the controller.
Start situation > Measuring mode > Repeatedly press the PGM key until CODE appears > Enter 0300 and confirm with PGM > Press the Exit key once > Simultaneously press the PGM + Down key.
A temperature of 25.0 appears in the top (red) display, °C appears in the bottom (green) display, the decimal point in the bottom display flashes.
CIP is a concept, in which the cleaning and disinfection dissolution
circulates in the circuit without dismantling the system to be treated.
This is called a circulation, circuit or recirculation cleaning process
that is mainly controlled automatically by programs.
The CIP cleaning concept can be used in systems where circuits can be
established, e.g. in tank systems, process lines for the drinking milk
production, the butter production, the cheese production, the dried milk
production or beverage industry (e.g. in breweries).
The task of the conductivity measuring technology is to control the
concentration of the cleaning and disinfection solutions in the supply
containers and at decisive points during the process. The concentration
in the lye and acid container must kept constant by intensification with
concentrated lye or acid. The conductivity of the hot water must be
controlled because this is the fluid that comes into contact with the
product.
The desalination function is an automatic process, during which the
reference value is reduced by opening a desalination valve after the set
limit value is exceeded.
The water supply that is now started (level control) dilutes the water in the circuit and, thus, reduces its conductivity.
In cooling towers, for example, biocides are added to the cooling water
to prevent the growth of biological substances in the cooling systems.
The desalination lock is started after the dosing time to ensure that
the biocide does not enter the sewage system.
The customer-specific concentration can be used to convert a reference
value to a concentration value by means of a table. Max. 20 support
digits can be used for this. The curve can only be programmed with the
setup program.
The customer-specific configuration is activated in the analog input conductivity parameter.
Ensure that the 19-digit F No. on the transmitter rating plate complies with the 19-digit F No. on the measuring cell cable end.
If the numbers do not coincide, calibrate the transmitter and the
measuring cell using the calibration set (sales article number
20/00459436) (see point 3 in the FAQs).
The language can be changed with the setup program or directly on the device.
From the device software 196.02.01, eight device languages are provided: German, English, Spanish, French, Polish, Swedish, Italian and Portuguese.
Older devices cannot be updated to all current languages.
Changing the language with the setup program:
Changing the language on the device:
The device language is changed in the operator level.
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.
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".
Advantages:
Disadvantages:
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.
Caution!
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!
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.
This can have a number of different causes:
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.
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 symmetrical connection allows measurement errors caused, for example, by a poorly insulated electric motor to be avoided to a certain extent.
The difference lies in the connection of the glass and reference electrode or the combination electrode. Instead of the bridge from terminal 3 to 5 (asymmetrical connection) the liquid potential of the measurement medium must be connected to the transmitter via a ground pin. Nothing has to be changed in the device configuration.
Asymmetrical connection:
Symmetrical connection:
If the connection is asymmetrical the glass electrode is connected to the transmitter with high impedance and the reference electrode is connected to the transmitter with low impedance. This difference can lead to incorrect measurements due to potential shifts.
If the connection is symmetrical the glass and reference electrodes are each connected to the device electronics via an operational amplifier. Both OPs register a potential shift as a result of which the voltage difference remains the same.
This setting can be entered under "Basic setting".
The various operating mode options are available here:
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.
