Capacitance type Level Transmitter

Series 3200 are Capacitance type Level Transmitters. The probe is based on properties of capacitor. Vessel wall & probe forms two electrodes. If vessel is of non conductive material, the probe will be double rod type. The distance between electrode & surface remains unchanged. The variable is the depth of the material being measured which represents the dielectric constant between two electrodes. Air & vacuum have relative dielectric constant as 1 & that of liquids, it is greater than 1. The capacitance of the capacitor therefore depends on how much material lies between the probe & vessel wall i.e whether the probe is covered with or free- from material. The capacitor changes with change in level of the material & provides corresponding 4-20 mA D C continuous output.

It is a compact, low cost, level transmitter with 4-20 mA analogue output designed to measure the level of various liquids, and solids in tanks or storage vessels. Measuring range is 0.2 to 3 m for Rod Probe version. The probe forms an electrical capacitor with the surrounding metal contained wall, or with auxiliary reference probe . With the vessel empty, an initial capacitance exists between the electrode and the metal wall or the auxiliary reference probe. When the probe becomes covered with material to be measured the capacitances will increase and the change will be measured and converted into an analogue (4-20 mA) output signal proportional to the change. Rod or flexible cable can be used for various Conductive or Non Conductive Liquids.

Acids, Acitone, Ammonia Benzine, Feed water, CTC diesel, oils, Fruit Juice, Milk, wine etc