LSP1
6Pages

Section Page Setting of the flushing intervals systec Controls MeB- unci Regeltechnik GmbH http:// www.systec-controls.de

1 Description Each systec Controls air-flushing system LSP can flush the absolute pressure pipes of one differential pressure measurement transmitter or of two pressure measurement transmitters individually. In order to begin the flushing process the flushing system expects one control signal via a potential free contact. You can also choose to start the flushing intervals by using an integrated timer. Scheme dp-Transmitter dp + - - + Primary element LSP1 High pressure port (6bar) LSP1 Electrical connection Produkt-Info 07.00 • Hotline 49 - 89 - 809 06-108 Seite 1

2 Flushing sequence Shut off/check-magnetic valves V1 and/or V2 shut off against measurement transmitters. 1. Magnetic valve V1 and V2 shut off-shut off valves left and right. 2. Main Three-way magnetic valve V5 opens. 3. Magnetic valve V3 opens, flushing of channel 1 begins. 4. Flushing intervals adjustable through bridges, flushing period through ports. 5. Magnetic valve V3 shuts off and magnetic valve V4 opens and flushes like before channel 2. 6. Magnetic valve V4 shuts off. 7. Main three-way valve V5 shuts off and relaxes valves V3 and V4. 8. Shut off/check valves V1 and V2 open,...

Setting of the flushing intervals through bridges: Input SPS Time period in hours During the entire flushing green signalling lamp in the casing "FLUSHING IN PROCESS" indicate the flushing process. The controlling of the flushing process is realised through a programmable control SPS and offers a variety of further options. Although flushing can be done with pressures up to 6 bar/g, putting pressure on the pressure/differential pressure measurement transmitters unintentionally which would result indestruction or zero point deviation - is impossible because of the physical, mechanical and...

In order to connect the LSP1 to absolute pressure producers, differential pressure measurement transmitters and compressed air, cutting ring screws or hose pipes are available. These connections are identical and may be used for + or - (HI or LO). We recommend dry compressed air with a pressure of about 6 bar for flushing. The standard connection geometry is 10 mm Ermeto cut ring for direct connection of OD 10mm steel capillaries. Additional parts are not needed. Special connectors are available on customer Connect 10mm steel capillar ^Process connection . Transmitter connection High...

6 Maintenance The LSP1 is made of high-quality components and materials and maintenance-free despite the very high life expectancy of the system. Should nevertheless the necessity for maintenance and repair works occur, the valve unit may be removed easily. Warning: Before opening the appliance always unplug the unit. Maintenance and repair works have to be done by repair authorised personnel only. To remove the valve unit unplug all connection plugs and mark them; this will later help you to put the unit back together. If there is a stiff connection between the high-pressure port and the...