SERIES HFS*: High Pressure/Temperature Indicators, Switches, and Transmitters

  • Full scale flow ranges from 1 to 150 GPM and 10 SCFM to 1,300 SCFMImage of Sure Flow Switch
  • Connection sizes from 1/4-inch to 8-inch NPT, BSP, SAE or flange
  • Construction materials: Brass, Stainless Steel, or Aluminum
  • Spring loaded, mechanical design mounts in any orientation
  • Viscosity compensating for liquids to 500 SSU
  • Pressure ratings to 6000 PSIG
  • Optional high temperature design up to 600 degrees F (315 C)
  • Optional field adjustable switches
  • Optional 4-20mA transmitter
    * FACTORY PRE-CALIBRATED TO CUSTOMERS SPECIFICATION

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FLOW RATE MONITORS

INDICATORS, SWITCHES, TRANSMITTERS AND FOR WATER, OILS, PAINTS, AIR, AND GASES

 

SERIES HFR, HFS, HFDS, AND HFT

FEATURES/BENEFITS:

  • Direct Reading Flow Rate Indication
  • Optional Switch(es)
  • Optional (field selectable) transmitter outputs of:
    4-20mA, 0 to 5 VDC, or 1 to 5VDC, square wave pulse
  • Pressures up to 6000 PSIG (413 Bar)
  • Maximum Temperatures to 600°F (315°C)
  • Not effected by viscosity changes up to 500 SSU/100 Centipoise
  • Versatile mounts in any orientation
  • No Straight Pipe Runs Required
  • Easy to read with Dark or Opaque Fluids
  • Flow Ranges:
    Liquids: 0.5 to 175 GPM
    Air & Gases: 2 to 1300 SCFM
  • Connections Sizes Available:
    1⁄4 through 2 Inch NPT, SAE, BSP, and Flanges

GENERAL DESCRIPTION:

Sure Flow Products variable area flow rate indicators are designed for tough industrial applications. This flow indicator is mechanical with a spring-loaded float and magnetic follower. This allows for mounting in any orientation and is ideal for use with dark or opaque fluids. The sharp edge orifice provides excellent measurement stability. These unique flow devices are not affected by changes in viscosities up to 500 SSU. For viscosities greater than 500 SSU and for air or gas applications, each flow indicator is individually calibrated for customer operating conditions.

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SERIES HFS* : High Pressure/Temperature Indicators, Switches, and Transmitters
Measuring Accuracy: ±2.5% of full scale on center 1/3 or measuring range ±1% or full scale over the entire scale range
Repeatable: ±1% or full scale
Flow Measuring Range: 0.05-150 GPM
Max. Operating Pressure: Aluminum or brass monitor: 3500 PSIG (240 Bar) Stainless steel monitor: 6000 PSIG (410 Bar)
MAX. Operating Temp: Media: 240°F (110°C) Ambient: 180°F (82°C)
Max. Pressure Drop: Consult Sure Flow Products
Standard Calibration: Oil monitors: DTE 25° @ 110°F (43°C), 0.873 sgWater monitors: Tap water @ 70°F (21°C). 1.0 sg
Enclosure: NEMA type 4X (UL approved)
Alarm Switch: 4% of full scale
Alarm Switch Contact: SPDF (dry contact): UL/CSA rating at 10 amps and 1/4 hp, 125 or 250 VAC, 1/2 amp, 125 VDOC, 1/4 amp, 250 VDC (3 amps, 125 VAC lamp load
Power Requirement: 12-35 VDC
Load Driving Capacity: 4-20: Load resistance is dependent on power supply voltage. Use the following equation to calculate the maximum load resistance: Max. loop load (Ω)=50 (power supply volts-12). 0-5 VDC: Minimum load resistance 1000~. 1-5 VDC: Minimum load resistance 25K~. Square wave pulse: Min. load resistance I000~.
Over-Current Protection: Self-limiting at 35mA
Resolution: 10 bit (0.1%)
Isolation: Inherently isolated from the process
Response Time: < 100 milliseconds

 

MATERIALS OF CONSTRUCTION

WETTED COMPONENTS
CASING END PORTS TAPERED SHAFT Aluminum Brass Stainless Steel
SEALS Bauna-N (Std), EPR, Viton®, Kalrez® Viton® w/Teflon® (Std), Buna-N, EPR, Kalrez®
TRANSFER MAGNET Teflon® Coated Alnico
FLOATING ORIFICE DISK Stainless Steel
ALL OTHER INTERNAL PARTS Stainless Steel
NON-WETTED COMPONENTS
ENCLOSURE & COVER Aluminum
SEALS Buna-N
WINDOW Pyrex
DIN CONNECTOR Polymide

 

DIMENSIONS SERIES HFR

HFS1

Dimension in Inches SIZE 2 SIZE 3 SIZE 4 SIZE 5
Diameter 1-1/4 1-7/8 2-3/8 3-1/2
Length 4-13/16 6-9/16 7-5/32 10-1/8 12-5/8
Port Size NPTF: 1/8, 1/4 1/4, 3/8, 1/2 3/4, 1 1-1/4, 1-1/2 2
SAE#: 6, 8, 10 12, 16 20, 24 32
BSP: 3/8, 1/2 3/4, 1 1-1/4, 1-1/2 2

 

DIMENSIONS SERIES HFS, HFDS, HFT

HFR3

Dimension in Inches SIZE 3 SIZE 4 SIZE 5
Length 6-9/16 7-5/32 10-1/8 12-5/8
Width 2-3/16 2-15/16 3-13/16
A 4 4-1/2 5-5/16
B 1-7/8 1-7/8 1-7/8
C 4-7/8 5 6-3/4
D 2-1/4 2-7/8 3-1/4
Port Size NPTF: 1/4, 3/8, 1/2 3/4, 1 1-1/4, 1-1/2 2
SAE#: 6, 8, 10 12, 16 20, 24 32
BSP: 3/8, 12 3/4, 1 1-1/4, 1-1/2 2

 

MODEL SELECTION:

Example: HFS /4 – 20GPM -.750- B – 2

SERIES:

  • HFR = Flow Rate Indicator
  • HFS = Flow Rate Indicator w/Switch
  • HFDS = Flow Rate Indicator w/2 Switches
  • HFT = Flow Transmitter

 

SIZES AVAILABLE FLOW RANGES:

SIZE GPM RANGES
LIQUID
GPM		 AIR & GAS
SCFM
/2 or /3 1 = .1 to 1
or .05 to 1		 1.5 to 12
/3 2 = .2 to 2 4 to 23
/4 5 = .5 to 5 6 to 60
/4 10 = 1 to 10 10 to 100
/4 10 = 1 to 10 10 to 100
/4 15 = 1 to 15 15 to 150
/4 20 = 2 to 20 20 to 215
/5 25 = 2 to 25 20 to 250
/5 30 = 3 to 30 30 to 330
/5 40 = 4 to 40 30 to 400
/5 50 = 5 to 50 30 to 470
/5 75 = 8 to 75 30 to 750
/5 100 = 10 to 100 150 to 900
/5 150 = 50 to 150 150 to 1300

Other units of measure available, consult Sure Flow

 

CONNECTIONS SIZES/TYPES:

.250 = 1/4 inch NPT
.250BSP = 1/4 inch BSP		 6 SAE = #6 SAE
.375 = 3/8 inch NPT
.375BSP = 3/8 inch BSP		 8 SAE = #8 SAE
.500 = 1/2 inch NPT
.500BSP = 1/2 inch BSP		 10 SAE = #10 SAE
.750 = 3/4 inch NPT
.750BSP = 3/4 inch BSP		 10 SAE = #10 SAE
1.00 = 1 inch NPT
1.00BSP = 1 inch BSP		 10 SAE = #12 SAE
1.25 = 1-1/4 inch NPT
1.25BSP = 1-1/4 inch BSP		 10 SAE = #16 SAE
1.5 = 1-1/2 inch NPT
1.5BSP = 1-1/2 inch BSP		 10 SAE = #20 SAE
2.00 = 2 inch NPT
2.00BSP = 2 inch BSP		 10 SAE = #24 SAE

For flanged connections, consult Sure Flow

 

BODY MATERIAL:

  • A = Aluminum
  • B = Brass
  • SS = Stainless Steel

 

SEAL MATERIALS:

  • 1 = Viton
  • 2 = Buna N
  • 3 = Ethylene Propylene
  • 4 = Teflon & Kalrez

 

OPTIONAL MOUNTING ORIENTATION/SPECIAL CALIBRATION:

  • R= Horizontal Mount – left to right flow
  • L= Horizontal Mount – right to left
  • D= Vertical Mount – flow down
  • B= Bidirectional

Note – Standard is vertical mount – flow up. However, meter can be mounted in any orientation. Options above include turning of the calibrated number for ease in reading.

High Temperature Option
(rate indicators only, consult Sure Flow Products)

  • HT = 400°F (requires Viton/Teflon seal)
  • HT6 = 600°F (requires Teflon/Kalrez seal)

S* – Calibrated for a viscosity greater than 500 SSU, or Specific Gravity greater than 1.0 (please specify both viscosity and specific gravity. Ex: S1000/.9 means calibrate for 1000 SSU and S.G. of .9