Liquid Controls LectroCount LCR-II E3657 Series, Руководство по установке

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20 21
eleCTronIC TeMPeraTure voluMe CoMPensaTIon
Thermowell Kit
Screw into the strainer cover
RTD Temperature Probe
(71130)
Coat the probe length
with the copper grease
provided in kit.
Thermowell
Foam Washers
Seal Gasket
Slotted Disk
Union Fitting
Run probe through
conduit
Connect wires
to J14 connector
ETVC Kit
Weights & Measures
Thermowell Port
Temperature Probe
Fitting
Weatherproof conduit to LCR-II
LectroCount LCR-II
Gallons
ETVC Conduit
TEMPERATURE PROBE J14
White (20)
White (21)
Red (22)
Red (23)
ETVC Wiring
To install the eTvC kit:
1. Depressurize the meter completely. See Warning on pg.
14.
2. Remove the old strainer cover.
3. Clean the strainer basket and put it back in the housing.
4. Lightly coat the new cover gasket (included with the
ETVC kit) with lubricaant (do not use the included copper
grease).
5. Fit the new cover gasket into strainer cover groove.
6. Bolt the strainer cover in place.
Make sure the Weights &
Measures thermowell port is at the top of the cover.
7. Assemble the thermowell kit (see Thermowell Kit figure
on the left).
8. Coat the entire probe length with the copper grease
provided. Insert and re-coat the probe 2 or 3 times to
provide a uniform coating inside the thermowell and to
ensure proper heat transfer from the liquid to the probe.
9. Connect the assembled thermowell to the fitting in the
middle of the strainer cover. The angled fitting at the top
of the cover is for Weights & Measures purposes. See
Step 6.
10. Connect the conduit to a ½" NPT port on the back of the
LCR-II using the elbow fittings provided with the conduit
kit (PN 81024).
11. Wire the temperature probe to the LCR-II internal board
on connector J14.
Disconnect the power before
working on the CPU board.
Disconnect Power
electronic Temperature volume Compensation (eTvC) Installation
When ordered as part of a meter system with a LCR-II, the ETVC kit is bolted onto the strainer and wired to the LCR-II
at the factory. ETVC kits can also be ordered and retrofit onto meter systems already in service. Although there are
several installation kits—kits are specified according to meter size and application—they are all installed in the same
manner. A conduit kit (PN 81024), with a 30" length of weatherproof flexible conduit, is available from Liquid Controls
to provide protection for the RTD temperature probe wire between the strainer cover and the LCR-II.
valves
A2847-11 Solenoid-Operated
Block Valve
Single Stage (S1) Block Valve
S1 Solenoid
LectroCount LCR-II
Gallons
Electro-Pnuematic
Preset Valve
Single Stage Electro-Pnuematic
Valve with V-7 Valve
S1 Solenoid
V-7 Valve
Electro-Pnuematic
Actuator
LectroCount LCR-II
Gallons
A2859-11 Block Valve
and 3-Way Solenoid
Single Stage
3-Way Valve
single stage systems
liquid Controls’ valves overview
When ordered as part of a meter system with a LCR-II,
Liquid Control’s control valves are bolted onto the meter
and wired to the LCR-II 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.
In order to control flow, the LCR-II energizes and de-
energizes 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-II
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.
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.
A2847-11 Valve
This single stage control valve has a S1 solenoid-
operated valve located at the meeting point of three
external pipes: one pipe from the inlet side of the valve,
one from the top of the block valve, and one from the
outlet side of the valve. This valve is typically used in
refined fuels applications.
A2843 Valve and 3-Way Solenoid
The 3-way solenoid-operated valve—mounted directly
to the top center port on the back of the LectroCount
LCR-II—serves as a S1 solenoid-operated valve. The
3-way solenoid-operated valve is located at the meeting
point of two pipes from the vapor eliminator (one for
eliminated vapor and one leading to the spit tank) and
one pipe to the top of the block valve. 3-way solenoid-
operated valves are typically specified for products that
hold vapor in the line such as LPG and NH
3
.
The LCR-II is also compatible with many other brands
and types of valves.