SIGMA's Conductivity Level Switches are simple, low cost and reliable instruments, for detection of conductive liquids. The Level Switch is available in single / multipoint level detection. A low alternating voltage is impressed between the active electrode(s) and the vessel wall / reference electrode. When the liquid comes in contact with the tip of the active electrode(s), an electrical path to ground is completed, closing the loop, resulting in flow of current. The current is transmitted to the control unit directly (in case of multiwire / integral design) or through a pre amplifier housed inside the probe head (in case of two wire design). The amplifier inside the control unit processes the signal and amplifies it to drive LED/ relay circuits

Severity, adversity. whatever the conditions of environment, SIGMA liquid level controllers keep operating. Rugged design of our units offer an electrical compartment completely isolated from the product level to be monitored. This makes it to withstand the extremely severe conditions to be met with in a wide range of a wide range of Chemical, Petrochemical, Power and other Process industries.

A wide range of SIGMA level controllers in an application bound material mix provide choice for one, two, three or four level monitoring by trigger related systems through contactors or relay. The level sensor termed asdisplacer is designed to suit high temperature and pressures. With wide differential models, the use extends to open tanks, slurry and treatment plants, neutralization pits etc.

SIGMA's External cage liquid level switches are very widely used for the petroleum and power industries. Anti vibration design ensures positive switch activation. Being highly versatile, cage mounted type extends to a wide range of other possible applications.
A pivoted permanent magnet end is attached to a micro switch. As the float rises following the liquid level, it raises a Magnetic sleeve (isolated inside a non magnetic enclosure (barrier) tube) into the field of the magnet causing attraction and movement across the pivot, actuating the switch. The enclosure tube provides a static seal between the switch mechanism and the float, eliminating the need for a flexing bellows seal, packing gland or other failure prone sealing elements.

When the liquid level falls, the float draws the magnetic sleeve below the magnetic field. The magnet swings out and re-actuates the switch to revert to the original position causing low level switch actuation

.

SIGMA's Conductivity Level Switches are simple, low cost and reliable instruments, for detection of conductive liquids. The Level Switch is available in single / multipoint level detection. A low alternating voltage is impressed between the active electrode(s) and the vessel wall / reference electrode. When the liquid comes in contact with the tip of the active electrode(s), an electrical path to ground is completed, closing the loop, resulting in flow of current. The current is transmitted to the control unit directly (in case of multiwire / integral design) or through a pre amplifier housed inside the probe head (in case of two wire design). The amplifier inside the control unit processes the signal and amplifies it to drive LED/ relay circuits

Severity, adversity. whatever the conditions of environment, SIGMA liquid level controllers keep operating. Rugged design of our units offer an electrical compartment completely isolated from the product level to be monitored. This makes it to withstand the extremely severe conditions to be met with in a wide range of a wide range of Chemical, Petrochemical, Power and other Process industries.

A wide range of SIGMA level controllers in an application bound material mix provide choice for one, two, three or four level monitoring by trigger related systems through contactors or relay. The level sensor termed asdisplacer is designed to suit high temperature and pressures. With wide differential models, the use extends to open tanks, slurry and treatment plants, neutralization pits etc.

SIGMA's External cage liquid level switches are very widely used for the petroleum and power industries. Anti vibration design ensures positive switch activation. Being highly versatile, cage mounted type extends to a wide range of other possible applications.
A pivoted permanent magnet end is attached to a micro switch. As the float rises following the liquid level, it raises a Magnetic sleeve (isolated inside a non magnetic enclosure (barrier) tube) into the field of the magnet causing attraction and movement across the pivot, actuating the switch. The enclosure tube provides a static seal between the switch mechanism and the float, eliminating the need for a flexing bellows seal, packing gland or other failure prone sealing elements.

When the liquid level falls, the float draws the magnetic sleeve below the magnetic field. The magnet swings out and re-actuates the switch to revert to the original position causing low level switch actuation

.