Products / Process & Flow

Description:

Lisle-Metrix manufactures four models of liquid level controllers to satisfy most industrial applications. These controllers operate on the principle of electrolytic conductivity in liquids. A built-in sensitivity adjustment permits field tuning the instrument so that one model is suitable for most conductivity liquids. For instance the LL4 or LL7 may be adjusted to respond to either foam or liquid. Some controllers may be as far as 300 meters from the electrodes, and connections are made with unshielded cable.

The Lisle-Metrix design limits the voltage at the electrodes to 18 volts, and also limits the current even if electrodes are shorted. Some competitive controllers may require as much as 500 volts across the electrodes.

A variety of electrode holders are available. Model LP, which accepts ¼" threaded electrodes, is suitable for high pressure applications. It is available to hold 1, 2 or 3 electrodes. The economical model LR may be used in applications up to 95 psi. It accepts unthreaded ¼" rod and has the added advantage of permitting easy adjustment of the electrode length. Other fittings accommodating up to 5 electrodes are also offered.

For more information, please download the PDF.

• Ideal for applications where the controller is mounted remotely, up to 300' from the electrodes
• Built-in sensitivity adjustment for foam or liquid applications
• Safety Low voltage at the electrodes
• Custom electrode lengths available
• Model LL7H for use with low conductivity liquids