Data Sheet HVT-DG HVT-DG Digester and Bio-Gas Flow Metering System The Most Reliable, Accurate, Long-Term Metering Solution for Low-Pressure, Wet Digester Gas HVT-DG Digester Gas Flow Metering System Features Accuracy: +/- 0.50% of actual reading (2 Sigma) +/- 0.25% of actual reading or better based on hydraulic calibration Beta ratios: custom sized and designed for Beta ratio from 0.30 to 0.75 Line size: range is unlimited, with examples from 2" to 24" in service Materials include, but are not limited to: carbon steel, 316 stainless steel, 304 stainless steel, Duplex stainless steel, Chrome Molybdenum, aluminum, Hastelloy ® B&C, Monel ® , Inconel ® , zirconium, titanium, tantalum Temperature: no limitations Line pressure capacity: from full vacuum to the limits of materials Line fluid capabilities: Gas or liquid pipe flow Clean, or with minimal particulate Contaminated flow with the HVT-SM sealed system P rimary Flow Signal, Inc. is a leader in the design and manufacture of Venturi differential flow meters. Field-proven in hundreds of thousands of installations worldwide, differential metering ensures the most accurate and reliable metering available anywhere. Through innovation, coupled with peerless engineering and technical expertise, PFS delivers customers versatile, ultra-long lasting liquid and gas metering solutions for a variety of applications and industries. The HVT-DG Halmi Insert Venturi is designed specifically to provide reliable service despite very low line pressure, and dirty, wet gas environments. The HVT-DG provides high energy recovery in digester gas applications for even the most demanding head field conditions. Drawing upon decades of innovation and expertise at PFS, these meters deliver incomparable long-term reliability and accuracy. The HVT-DG meter does not have a standard configured design but rather is a custom metering solution designed for the specific conditions of each application. It features a manual vent cleaner which allows for the removal of particles from the meter, offering a simple solution to ensure debris does not impact flow measurement. When the PFS-MV Flowmaster Fully Integrated Secondary Metering System is included, the readout will compensate for line conditions, greatly improving accuracy.
Transcript
Data Sheet
HVT-DG
HVT-DG Digester andBio-Gas Flow Metering SystemThe Most Reliable, Accurate, Long-Term MeteringSolution for Low-Pressure, Wet Digester Gas
HVT-DG Digester Gas Flow Metering System Features
AAccccuurraaccyy:+/- 0.50% of actualreading (2 Sigma)
+/- 0.25% of actual reading or better based on hydraulic calibration
BBeettaa rraattiiooss: custom sized and designed for Beta ratio from 0.30 to 0.75
LLiinnee ssiizzee: range is unlimited, with examples from 2" to 24" in service
LLiinnee pprreessssuurree ccaappaacciittyy: from fullvacuum to the limits of materials
LLiinnee fflluuiidd ccaappaabbiilliittiieess:Gas or liquid pipe flow
Clean, or with minimal particulate
Contaminated flow with the HVT-SM sealed system
Primary Flow Signal, Inc. is a leader in the design and manufacture of Venturi differential flow meters. Field-proven in
hundreds of thousands of installations worldwide, differential metering ensures the most accurate and reliable metering available anywhere. Through innovation, coupled with peerless engineering and technical expertise, PFS delivers customers versatile,ultra-long lasting liquid and gas metering solutions for a variety of applications and industries.
The HVT-DG Halmi Insert Venturi isdesigned specifically to provide reliable service despite very low line pressure, and dirty, wet gas environments. The HVT-DG provides high energy recovery in digester gas applications for even the most demanding head field conditions.
Drawing upon decades of innovation and expertise atPFS, these meters deliver incomparable long-term reliability and accuracy.
The HVT-DG meter does not have a standard configureddesign but rather is a custom metering solution designed for the specific conditions of each application.It features a manual vent cleaner which allows for theremoval of particles from the meter, offering a simplesolution to ensure debris does not impact flow measurement.
When the PFS-MV Flowmaster Fully Integrated Secondary Metering System is included, the readout will compensatefor line conditions, greatly improving accuracy.
All PFS products are proudly made in the U.S.A.
Data Sheet
HVT-DG
Support Services
In addition to a wide range of differential producing Venturi flow meters, orifice plates, WedgeType™ flow meters, and open channel flow elements, PFS providescomprehensive, specialized services for new and existing flow meters, including rehabilitation, hydraulic analysis, and full engineering support.
HVT-DG Digester Gas Flow Metering System
PROCESS LINE
H. POWER SUPPLY With Fuse Compartment
G. POWER SOURCE 120 Volt - AC
F. NEMA - 4 Equipment Enclosure
E. CHART RECORDER Optional Equipment
A. TOTALIZER/INDICATOR Accumulates Aggregate Flow Rate Data
B. (OPTIONAL) OUTPUT 4 - 20 mA Output Signal for remote CPU
C. PFS FLOW TRANSMITTER Senses Differential Pressure from High and Low Pressure Tap Locations
D. 3-VALVE MANIFOLD All Stainless Steel
M. HIGH PRESSURE TAP 1/2” NPT (Stamped “H”)
L. HVT-DG (Typical) Halmi Insert Type Venturi Meter with Fiberglass Reinforced Resin Downstream Cone, Stainless Steel Throat and Inlet Cone, and Epoxy Coated Carbon Steel Center Flange
I. LOW PRESSURE TAP 1/2” NPT (Stamped “L”)
J. IMPULSE PIPING To High and Low Pressure Taps
K. SPECIAL VENT CLEANER To Permit Convenient Cleaning of High and Low Pressure Taps
AB
C
D
I
K
J
L
M
H
G
FE
Certifications
ISO 9001, ASME S, U, R; European PED Module H; andother internationally recognized certifications, such as GOST, IBR, and CRN.
Contact a Field Application Engineer for assistance.
Primary Flow Signal, Inc. products and operations are certified to industry standards for safety and performance. Visit our web site for details.
PPeerrmmaanneenntt pprreessssuurree lloossss:Varies from 3% of differential andup depending on Beta ratio application conditions
Ratios including Beta and exit cone truncation can be engineered to meet requirements
DDiisscchhaarrggee ccooeeffffiicciieenntt: bias and random error between 12,000 and 75,000 RD is empirically established and highly repeatable
PPiippee RReeyynnoollddss nnuummbbeerr ((RRDD
ccaappaabbiilliittyy)): discharge coefficient is constant above 75,000 RD
LLiiqquuiidd aapppplliiccaattiioonnss: impulse piping needs a minimum of 1 inch per foot, DOWN to the flow transmitter(s). Transmitter should be located below meter center line.
GGaass aapppplliiccaattiioonnss: impulse piping needs a minimum of 1 inch per foot, UP to the flow transmitter(s). Transmitter should be located above meter center line.
For applications where this is not possible, PFS developed solutions to resolve most impulse line/DP transmitter orientations.
