Liquid Controls LectroCount LCR 600, Инсталляционные компоненты

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Installation
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Valves
Overview
When ordered as part of a meter system with a LCR 600, Liquid Control control valves are bolted onto the
meter and wired to the LCR 600 at the factory. Electronic control valves can also be ordered separately
and retrofit onto meter systems already in service. These valves will need to be piped and wired in the
field. For piping instructions, refer to the valve manual. This manual includes wiring instructions for the
valves.
To control flow, the LCR 600 energizes and deenergizes solenoid-operated valves on external bypass
piping routed off the main product flow. The solenoid operated valves close off and open the bypass
pipes. The bypass pipes redirect some of the product flow in order to open and close the control valve.
These solenoid-operated valves must be wired to the LCR 600 CPU board during installation.
Liquid Controls offers single-stage and two-stage electronic valves. Single stage valves have one solenoid
valve (S1) and two positions—an open position and a closed position. Two-stage valves have two solenoid
valves (S1 & S2) and three positions—open, closed, and dwell flow. Dwell flow is a low flow rate setting
controlled by the S2 solenoid and initiated shortly before the register reaches a preset value.
Compatibility
The LCR 600 is also compatible with many other brands and types of valves.
This chapter covers:
· Single-Stage Valves
·
Two-Stage Valves
·
Valve Installation
Single-Stage Valves
The three most common Liquid Controls meter systems with single stage valves include:
· a block valve with a S1 solenoid-operated valve fitted onto external piping (A2847-11),
·
a block valve (A2843) with a 3-way solenoid
· and an electro-pnuematic valve with an S1 solenoid
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