The essential instrument to find the source of your problem

When a problem occurs on a pH/mV controller, it is often difficult to identify the origin of the problem. Thanks to simulator HI 931001, the user can now check itself the state of his material. It is enough to connect the simulator to the instrument, to fix by the potentiometer a value of pH and ORP given and to compare the two liquid crystal displays.

Differences between standard & amplified pH/ORP electrodes

The traditional pH meters use signals of strong impedance because of the strong resistivity of the membranes of the glass electodes. A bad insulation of the connector and cable accentuate the sensitivity of the electrode to the background noise and moisture and thus disturb measurement. It is thus advisable to look after connections and not to exceed a length of cable of more than 10 meters. For higher distances, insulated apparatuses and shielded cables are necessary. Often complex and expensive, this solution does not bring a real satisfaction.
The amplifier integrated into the electrode makes it possible to concentrate the problem due to a strong impedance in a zone. The circuit of strong impedance, then completely insulated, is concentrated at the end of the electrode. It results that a signal of low impedance is transmitted to the measuring apparatus. Thus ordinary connectors, not armoured cables and a traditional pH meter can be used. This considerable progress benefits the installations particularly from industrial processes. Its double junction reference system avoids the fast clogging of the diaphragm.