Hydrostatic Measurement (Depth & Level)

Models:

HLF 842 (Piezo cell) or HLF 842-C (ceramic) HLC 842 (Piezo cell) or HLC 842-C (ceramic) HL 840 (Piezo cell) or HL 840-C (ceramic)

Introduction

Sitron's Hydrostatic Level probes have identical features as the Industrial pressure sensors with one main difference: They are submersible. Hydrostatic Level Probes are specifically designed for depth/level measurements in groundwater, deep wells, water towers, rivers, sewage treatment plants and other similar applications. The Hydrostatic Level Probes are fully encapsulated and are housed in a weatherproof cylindrical enclosure. Offering a great degree of flexibility, they can be constructed with 316S.S. rigid rods or with special cables for depth measurements. These probes can be made with either 316 S.S. piezoresistive or ceramic cells. Their compact design enables the probes to work within pipe diameters as little as 3/4”. The 842 models are available with an electronic module within the enclosure providing a Zero/Span adjustment. All of Sitron's Hydrostatic Level Probes have a 4-20mA (2 wire) output signal and are fully temperature compensated. Like all of Sitron's products, the Hydrostatic Measurement Level Probes can be made in a wide variety of process connections.

Technology

Hydrostatic Level Probes utilize the same pressure sensing technology as the pressure sensors; as hydrostatic pressure increases with the height of the water column a displaced electrical charge accumulates on the opposing surface of the cell (316 S.S. piezoresistive or ceramic). This generates an output signal, which is converted to a standardized 4-20-mA (2 wire) signal that is directly proportional to the pressure applied.

Mounting

While the Hydrostatic Level Probes are similar to the pressure sensors in terms of their technical specifications, all of the mechanical mounting procedures are different. The HL Series of Hydrostatic Level Probes must be installed at the top of the tank or well, along with a special polyurethane cable or rigid rods that transmit the signals from the sensor to the head of the probe where an electronic module is located. Precision mounting of Hydrostatic Level Probes is essential for accurate pressure measurements. Sitron-USA, Inc. 21 West Nicholai St. Hicksville, NY 11801 Ph:(516) 935-8001 Fax: (516) 935-6001 e-mail: www.sitron.cominfo@sitron.com -