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Hoffer has supplied flowmeters for Hoffer has supplied flowmeters for BOP BOP’ ’s. s.
In fact, we have supplied well over 100 meters for BOP’s alone!
Presentation Overview Presentation Overview Who is Hoffer Flow - - PowerPoint PPT Presentation
Presentation Overview Presentation Overview Who is Hoffer Flow - - PowerPoint PPT Presentation
Presentation Overview Presentation Overview Who is Hoffer Flow Controls? Who is Hoffer Flow Controls? 1. 1. Show me the money (benefits)! Show me the money (benefits)! 2. 2. Aren t there other flowmeters that are t there other flowmeters
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Hoffer has supplied flowmeters for use Hoffer has supplied flowmeters for use
- n subsea
- n subsea ROV
ROV’ ’s. s.
Flowmeters monitor hydraulic fluid system performance
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Hoffer has supplied subsea flowmeters for a wide Hoffer has supplied subsea flowmeters for a wide variety of variety of tooling skids. tooling skids.
Hydrate remediation skid BOP Intervention Skid
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Hoffer flowmeters are used on Hoffer flowmeters are used on Drill Ship Drill Ship Pacific Santa Ana with Pacific Santa Ana with ABS ABS-
- CDS approval
CDS approval
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Hoffer flowmeters are used for a Hoffer flowmeters are used for a variety of variety of topside topside of flow applications.
- f flow applications.
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Why you Why you “ “should should” ” consider using Hoffer consider using Hoffer turbine flowmeters! turbine flowmeters!
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Hoffer Flow Controls
- Providing flow solutions to industry for
- ver 40 years.
- Privately‐held corporation located in
Elizabeth City, NC.
- Noted manufacturer of turbine flowmeters
for liquid, gas and cryogenic flow measurement.
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Hoffer Flow Controls Hoffer Flow Controls
Some of the major markets served Some of the major markets served… …. .
- Oil & Gas Upstream and Downstream
Oil & Gas Upstream and Downstream
- Cryogenics
Cryogenics
- Pharmaceuticals & Biotech
Pharmaceuticals & Biotech
- Military
Military
- Aerospace
Aerospace
- Power Production
Power Production
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Hoffer Flow Controls Hoffer Flow Controls
- Recognized for being able to design and build
Recognized for being able to design and build custom flow meters in a short time. custom flow meters in a short time.
- Examples of custom design requirements
Examples of custom design requirements include high pressure requirements (as much as include high pressure requirements (as much as 60,000 PSIG), exotic alloys, ultra 60,000 PSIG), exotic alloys, ultra‐ ‐high velocity high velocity flow measurement applications (Mach 0.5) and flow measurement applications (Mach 0.5) and designs for harsh environments (subsea to designs for harsh environments (subsea to 15,000 FT). 15,000 FT).
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Turbine Flow Meters
- Turbine flow meters measure velocity.
- They work well in clean, low to mid‐viscosity
applications.
- Liquid meters typically designed to measure
up to 20 feet per second.
- Gas meters are designed to measure
velocities as high as 250 feet per second.
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Meter Body Pickup Coil Hangers or I ntegral Flow Straightener Thru-Shaft w / Locknuts Coil Riser Deflector Cones Flat-Bladed Turbine Rotor
Basic Principle of Operation Basic Principle of Operation
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Turbine Flowmeter Performance Characteristics
LINEARITY
FLOW RANGE AT DESIGNATED LINEARITY
K-FACTOR
O U T P U T V O L T A G E ( M v ) OUTPUT FREQUENCY (Hz) PRESSURE LOSS (PSID)
PRESSURE LOSS (PSID) OUTPUT FREQUENCY (hZ) OUTPUT VOLTAGE (Mv) K-FACTOR (CYC/GAL)
FLOW RATE
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Basic Definitions
LINEARITY: K-FACTOR: REPEATABILITY:
A measure of the accuracy of the device which is the maximum percentage deviation from the average K-Factor. The number of output pulses the flowmeter produces per engineering unit of the volume throughput. A statement of the ability of a measuring device to display the same value of a measured variable under identical conditions.
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Why use turbine meters?
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Mini-Flowmeters for low flow liquid and gas applications. “Premier Natural Gas Series” for custody transfer
- f natural gas.
3A Certified Sanitary Flowmeters for food, beverage, pharmaceutical and bio-tech. HO Series with MS Flared fittings commonly used in industry.
Providing Providing “ “Application Specific Application Specific” ” flow solutions for our customers is the key. flow solutions for our customers is the key.
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Turbine Meter Advantages Turbine Meter Advantages – – Performance Performance
- High degree of accuracy
High degree of accuracy (+/ (+/‐ ‐.25% of reading) and .25% of reading) and great repeatability (+/ great repeatability (+/‐ ‐.1%) .1%)
- Suitable for
Suitable for “ “custody custody” ” transfer transfer
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Turbine Meter Advantages Turbine Meter Advantages – – Response Time Response Time
- Fast, dynamic
Fast, dynamic response response time time
- Measured in milliseconds!
Measured in milliseconds!
- Commonly used for rocket
Commonly used for rocket propulsion propulsion
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Turbine Meter Advantages Turbine Meter Advantages – – Shock, vibration & temp extremes Shock, vibration & temp extremes
- We p
We pioneered the use of turbine ioneered the use of turbine flowmeters on cryogenic delivery flowmeters on cryogenic delivery trucks in the 1970 trucks in the 1970’ ’s s
- Suitable for installation on trucks
Suitable for installation on trucks subject to shock & vibration subject to shock & vibration
- Subject to wide operating
Subject to wide operating temperature extremes temperature extremes
- Our flow system is the
Our flow system is the “ “cash cash register register” ”
- n many bulk delivery
- n many bulk delivery
cryogenic trucks domestically and cryogenic trucks domestically and internationally internationally
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Turbine Meter Advantages Turbine Meter Advantages – – Reliability Reliability
- Metering control fluid on a BOP
Metering control fluid on a BOP
- Hoffer replaced
Hoffer replaced “ “leaking leaking” ” mag mag meters meters
- High
High “ “internal internal” ” & & “ “external external pressures pressures” ”
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Turbine Meter Advantages Turbine Meter Advantages – – Robust Design Robust Design
- Flowmeter
Flowmeter “ “internals internals” ” designed designed to meet to meet “ “high high shock shock” ” and and “ “vibration vibration” ” MIL MIL standards for standards for US Navy. US Navy.
- For use on every
For use on every “ “class class” ”
- f
- f
US Navy ships. Applications US Navy ships. Applications include fuel measurement and include fuel measurement and RO water systems (seawater). RO water systems (seawater).
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Turbine Meter Advantages Turbine Meter Advantages
Robust Design Robust Design
Flowmeter Flowmeter Internals Internals Threaded Insert Threaded Insert
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Turbine Meter Advantages Turbine Meter Advantages – – Wide Rangeability Wide Rangeability
- Flowmeters can be configured to
Flowmeters can be configured to provide repeatable flow ranges provide repeatable flow ranges with up to 100:1 turndown ratios. with up to 100:1 turndown ratios.
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Liquid Size Selector For Standard HO Series Turbine FLowmeters
Liquid Size Selector
For Standard HO Series Turbine Flowmeters
Flowmeter Size MAGNETI C PI CKUP COI L MODULATED PI CKUP COI L Diameter Diameter (inches) (inches) Linear Range Linear Range (US GPM) (US GPM) Linear Range Linear Range (LPM) (LPM) Repeatable Range (US GPM) Repeatable Range Repeatable Range (LPM) (LPM) Linear Range Linear Range (US GPM) (US GPM) Linear Range Linear Range (LPM) (LPM) Repeatable Range (US GPM) Repeatable Repeatable Range Range (LPM) (LPM) 1/4* 1/4* .35 .35-
- 3.5
3.5 1.3 1.3-
- 13.2
13.2 .25 .25-
- 4.5
4.5 .95 .95-
- 17
17 .35 .35-
- 3.5
3.5 1.3 1.3-
- 13.2
13.2 .0625 .0625-
- 4.5
4.5 .24 .24-
- 17
17 3/8* 3/8* .75 .75-
- 7.5
7.5 2.8 2.8-
- 28.4
28.4 .3 .3-
- 9
9 1.1 1.1-
- 34
34 .75 .75-
- 7.5
7.5 2.8 2.8-
- 28.4
28.4 .075 .075-
- 9
9 .28 .28-
- 34
34 1/2 1/2 1.25 1.25-
- 9.5
9.5 4.7 4.7-
- 36
36 .6 .6-
- 12
12 2.3 2.3-
- 45
45 1.25 1.25-
- 9.5
9.5 4.7 4.7-
- 36
36 .12 .12-
- 12
12 .45 .45-
- 45
45 5/8 5/8 1.75 1.75-
- 16
16 6.6 6.6-
- 60.6
60.6 .9 .9-
- 20
20 3.4 3.4-
- 75.7
75.7 1.75 1.75-
- 16
16 6.6 6.6-
- 60.6
60.6 .2 .2-
- 20
20 .75 .75-
- 75.7
75.7 3/4 3/4 2.5 2.5-
- 29
29 9.5 9.5-
- 110
110 1.5 1.5-
- 35
35 5.7 5.7-
- 132.5
132.5 2.5 2.5-
- 29
29 9.5 9.5-
- 110
110 .35 .35-
- 35
35 1.3 1.3-
- 132.5
132.5 1 4-60 15-227 2-75 7.6-284 4-60 15-227
.75-75
2.8-284 1 1-
- 1/4
1/4 6 6-
- 93
93 23 23-
- 352
352 3 3-
- 115
115 11.4 11.4-
- 435
435 6 6-
- 93
93 23 23-
- 352
352 1.15 1.15-
- 115
115 4.35 4.35-
- 435
435 1 1-
- 1/2
1/2 8 8-
- 130
130 30.3 30.3-
- 492
492 5 5-
- 175
175 19 19-
- 662
662 8 8-
- 130
130 30.3 30.3-
- 492
492 1.75 1.75-
- 175
175 6.6 6.6-
- 662
662 2 2 15 15-
- 225
225 56.8 56.8-
- 852
852 11 11-
- 275
275 42 42-
- 1041
1041 15 15-
- 225
225 56.8 56.8-
- 852
852 2.75 2.75-
- 275
275 10.4 10.4-
- 1041
1041 2 2-
- 1/2
1/2 25 25-
- 400
400 95 95-
- 1514
1514 15 15-
- 500
500 56.8 56.8-
- 1893
1893 25 25-
- 400
400 95 95-
- 1514
1514 5 5-
- 500
500 19 19-
- 1893
1893 3 3 40 40-
- 650
650 151 151-
- 2460
2460 20 20-
- 800
800 76 76-
- 3028
3028 40 40-
- 650
650 151 151-
- 2460
2460 8 8-
- 800
800 30.3 30.3-
- 3028
3028 4 4 75 75-
- 1250
1250 284 284-
- 4731
4731 50 50-
- 1500
1500 189 189-
- 5678
5678
MCP not recommended in 4 MCP not recommended in 4” ” and larger sizes and larger sizes
5 5 140 140-
- 2000
2000 530 530-
- 7570
7570 100 100-
- 2500
2500 379 379-
- 9463
9463 6 6 200 200-
- 2900
2900 757 757-
- 10977
10977 125 125-
- 3600
3600 473 473-
- 13626
13626 8 8 330 330-
- 5200
5200 1249 1249-
- 19682
19682 270 270-
- 6400
6400 1022 1022-
- 24224
24224 10 10 650 650-
- 8000
8000 2460 2460-
- 30280
30280 540 540-
- 9800
9800 2044 2044-
- 37093
37093 12 12 1400 1400-
- 12000
12000 5299 5299-
- 45420
45420 800 800-
- 15000
15000 3028 3028-
- 56775
56775
NOTE: NOTE: Performance enhancement techniques are routinely applied to prod Performance enhancement techniques are routinely applied to produce larger linear and usable flow ranges. uce larger linear and usable flow ranges. Consult with the applications group at Hoffer with your requirem Consult with the applications group at Hoffer with your requirements. ents.
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Turbine flowmeters are highly “repeatable” (+/-.1%). “Smart” Electronics can correct for non-linearity of the flowmeter.
PLOT OF TURBINE FLOWMETER CALIBRATION “K-FACTORS” (pulses/gallon)
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1% 10%
100% Flow Rate Accuracy
Percent of
Reading Percent of Full Scale Absolute Accuracy Becomes Worse with Decreased Flow
Linearity and repeatability are expressed in terms of Linearity and repeatability are expressed in terms of “ “percent of reading percent of reading” ” rather than rather than “ “percent of full scale percent of full scale” ” such as a differential pressure flowmeter. such as a differential pressure flowmeter.
Turbine Meter Advantages Turbine Meter Advantages – – Of Reading vs. Percent of Full Scale Of Reading vs. Percent of Full Scale
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All All “ “turbine flowmeters turbine flowmeters” ” are not created equal are not created equal -
- Some are
plastic Some are Aluminum Some are molded There are many different designs of “Turbine meters”
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Common Design Elements Common Design Elements – – f for a
- r a
“ “high performance turbine flowmeter high performance turbine flowmeter” ”
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Rotor Construction Rotor Construction – – Precision Machined Precision Machined
- All Rotor assemblies are precision machined.
All Rotor assemblies are precision machined.
- Hoffer does not use cast rotors.
Hoffer does not use cast rotors.
- Cast rotors are
Cast rotors are “ “heavier heavier” ” than rotors machined than rotors machined from solid bar stock. Heavier rotors mean slower from solid bar stock. Heavier rotors mean slower dynamic response to changes in flow rates. dynamic response to changes in flow rates.
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Rotor Construction Rotor Construction – – Rotor Design Rotor Design
- Hoffer uses flat rather than curved blades
Hoffer uses flat rather than curved blades
- n its rotors
- n its rotors
- Curved blades produce a higher pressure
Curved blades produce a higher pressure drop. drop.
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Rotor Construction Rotor Construction – – Rotor Design Rotor Design
- Machined rotors can be
Machined rotors can be “ “customized customized” ” with with thicker blades for use in abrasive services thicker blades for use in abrasive services
- The blade
The blade “ “length length” ” may be adjusted to may be adjusted to accommodate larger particulate. This approach accommodate larger particulate. This approach is commonly utilized in the design of our oil is commonly utilized in the design of our oil patch flowmeters. patch flowmeters.
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Optimization of Optimization of “ “flow range flow range” ” -
- Supplying various blade angles and rotor designs
Supplying various blade angles and rotor designs
- Hoffer provides four different blade angles (15, 20, 25 &
30 degree) for each size meter within our HO Gas product line to optimize the ideal flow range selection.
- The “steeper”
the blade angle; the lower the flow rate capability.
- We offer “bladed”
and “rim” type rotor assemblies. Rim rotors are typically specified for custody transfer applications and produce more “pulses” (better resolution).
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Bladed Rotor Assembly Bladed Rotor Assembly Rim Rotor Assembly
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In conclusion, you should consider using turbine flowmeters if…
- Accuracy is important
- You need a robust flowmeter
- You require dynamic response to changes in flow
conditions
- You require a wide flow range
- You have a specific “footprint”
(space) in which the flowmeter must fit
- You want a flowmeter that is light in weight and easy
to install
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