Probes with a connector (S8, VP6, Memosens,…) and a cable fixed in the terminal board of the converter are standard.
installation: away from sources of interference (power cables, electric motors, transformers)
Probes with a fixed cable are used rather seldom in case of simpler measuring systems. Usually for little sophisticated converters, where the signal cable is connected to an external (usually BNC) connector. This is a source of problems due to environmental corrosion of the connector.
Picture of sensor´s connectors:
Laboratory and portable measurements
Probe with connector (usually S7*)
Connectors on the instrument side which are usually used for pH measurement:
bayonet two-pole connector: central pin (measuring electrode signal) and bayonet (reference signal - shielding)
coaxial antenna connector: central pin (measuring electrode signal) and ring (reference signal - shielding)
Connectors such as Cinch, Jack, "banana" and others are commonly used to transmit the temperature sensor signal. Usually two-pole versions, or two separate bananas. In the case of only one pole, the (-) pole of the temperature measurement is common to the reference of the pH probe. It depends on the manufacturer of the pH meter.
* S7/S8 cable part of connector is identical, the difference is in the head of probe
– S7: laboratory version
– S8: process type with thread (PG 13.5) for pipe mounting.
The concept of using digital Memosens sensors is globally unique.
As a result of contactless transmission technology, the Memosens plug & play system is 100% waterproof and resistant to dirt, corrosion, salt bridges, overpressure and interference potentials. This makes it clearly superior to conventional systems. Its robust connector also makes Memosens extremely resistant to mechanical influences. Inductive signal transmission results in perfect galvanic isolation. Even when system components or process media are insufficiently grounded or frequency converters are causing EMC interference, stable, precise measurements can still be realized. Further equipotential bonding measures such as solution ground are unnecessary
Look at the Knick here to get more information.
Physical properties measurement is an area covering various electrochemical and spectrophotometric methods. The most commonly measured parameters are: pH, redox-potential (ORP), conductivity, dissolved oxygen concentration (DO), salinity, total dissolved solids (TDS) and turbidity. Area of Physical Properties Measurement also includes colorimetry, which is uses mostly for:total and free chlorine, cyanuric acid, pH, chlorine dioxide, bromine and ozone.
This section includes interesting information in following areas
If you are interested in our products, please look at our laboratory product line or products for process measurement.
This section is under construction.