Cla-Val 133VF - Manual

The 131VF flow module accepts 4-20 mA analog signals of
valve differential pressure and valve position to determine the
flow rate.
The partially-open valve Cv is derived from valve position then
used to calculate flow rate with formula shown below:
Where:
Q = flow (gpm)
DP = differential pressure (psi)
SG = specific gravity of fluid (water = 1.0)
133VF
Valve Flow Measurement
The Cla-Val 133VF Flow Metering System is an effective
means of obtaining real-time flow data from a Cla-Val
control valve regardless of valve function and without an
external flow device. Now all Cla-Val control valves in a
water distribution system can be economically integrated
into SCADA control or pressure and flow management
strategies.
The 133VF System is completely self-contained and when
factory installed on new Cla-Val automatic control valves
or field installed on existing valves, accurately measures
flow rate and transmits it as a 4 - 20 mA analog signal. It
can be used on virtually all valve sizes from two through
twenty-four inch and is typically used at pressure reduc-
ing, back pressure, flow limiting, and level control valve
stations.
The system features the “heart” of the 133-01 Flow
Metering Control Valve technology and adapts it for sin-
gle-valve flow monitoring-only applications. The 133VF
System major components are an X117D valve position
transmitter, a differential or inlet and outlet pressure
transmitters and a 131VF flow calculating module. All
components are 24 VDC powered and weather protect-
ed to IP-68 submersible rating. The 131VF module, with
standard DIN rail mounting, contains powerful mini-com-
puter technology for calculating valve flow based on
inputs from the sensors and using the appropriate flow
curve for a particular Cla-Val valve. For increased accu-
racy the 131VF module uses third-party certified flow
curves tested for this particular metering application.
Valve differential pressure measurement can be located
either at the valve inlet and outlet bosses or on pipe
adjacent to the valve providing installation versatility in
all applications and operating conditions.
For applications requiring flow measurement and remote set point
control, see 133-01 Metering Valve catalog data sheet.
MODEL
• System accurately measures flow rate
• No external meter is required
• For new installations and retrofitting
existing valves
• Completely self-contained, requiring
12 to 24 VDC power
• Simple integration
Q = C
v DP / SG
131VF Flow Module
X117D
X117E
133VF Retrofittable Metering
Kit Option
X117 Series
Position
Transmitter
DP Differential
Pressure Transmitter
Automatic Control Valve
with Metering Kit
Installed