In-Line Flow Meters, In-Line Flow Control Equipment, Lake MonitorsCE LogoFor 1/8"- 2" Pipe Sizes
Style B

Ideal for accurately monitoring pump performance and media flows through hydraulic circuits and sub-circuits

  • CHOICE OF THREE MATERIALS OF CONSTRUCTION
    Select from aluminum, brass or stainless steel to meet system and media compatibility requirements.

  • UNRESTRICTED MOUNTING
    Allows the designer to install the meter in any orientation – horizontal, vertical or inverted.

  • SUPERIOR EXTERIOR DESIGN
    Weather-tight for use outdoors and/or on systems where wash downs are required.

  • GOOD VISCOSITY STABILITY
    A sharp-edged stainless steel orifice provides excellent measurement stability for viscosities from 0-500 SSU.

  • RUGGED AND RELIABLE
    Designed as a hydraulic service tool, this meter will provide years of maintenance-free performance.

  • HIGH PRESSURE OPERATION
    The magnetically coupled follower and rigid pressure vessel design allows operation to 6000 PSIG and use with opaque liquids.

  • 24 DIFFERENT PORTS AVAILABLE
    Standard selection of NPT, SAE and BSP ports reduces the amount of adapters required for installation.

  • LOW COST ACCURACY
    ± 2.5% of range accuracy in center third of scale; ±4% in upper and lower thirds.

  • BI-DIRECTIONAL AND REVERSE FLOW OPTION OFFERED
    Basic in-line liquid flow rate meters are also available in bi-directional and reverse flow versions.

Click here for more information.


Engineering Specification

THE BASIC SERIES LIQUID FLOW RATE METER SHALL:

  • Use the variable annular orifice technique with compression spring recoil.

  • Not require inlet or outlet straight plumbing, or require vertical pipe mounting.

  • Have a measuring accuracy of ±2.5% of full scale in the center third of the measuring range, and ±4% in upper and lower thirds.

  • Have a stainless steel sharp-edged orifice.

  • Have weather-tight external construction.

  • Be Lake Monitors No. B _ _ – _ _ _ – _ _

Materials of Construction (Wetted Components)

Aluminum

Brass

Stainless Steel

High-pressure casing, end ports and tapered shaft

Aluminum

Brass

#303 Stainless Steel

Seals

Buna-N (STD.), EPR, Viton® or Kalrez®

Buna-N (STD.), EPR, Viton® or Kalrez®

Viton® with Teflon® backup (STD.), Buna-N, EPR or Kalrez®

Transfer Magnet

Teflon® coated Alnico

Teflon® coated Alnico

Teflon® coated Alnico

Floating Orifice Disk

Stainless Steel

Stainless Steel

Stainless Steel

All other internal parts

Stainless Steel

Stainless Steel

Stainless Steel

Teflon is a registered trademark of DuPont de Nemours & Co.
Viton and Kalrez are registered trademarks of Dow DuPont Elastomers


Materials of Construction (Non-Wetted Components)

Aluminum

Brass

Stainless Steel

Window Tube

Polycarbonate (STD.)

Polycarbonate (STD.)

Polycarbonate (STD.)

Window Seals

Buna-N (STD.), Teflon®

Buna-N (STD.), Teflon®

Buna-N (STD.), Teflon®


Performance

Measuring accuracy:

±2.5% of full-scale in the center third of the measuring range; ±4% in upper and lower thirds

Repeatability:

±1% of full-scale

Flow measuring range:

.05-150 GPM (0.2-560 LPM)

Pressure differential:

See Brochure

Maximum operating pressure:

aluminum and brass monitors: 3500 PSIG (240 Bar)
stainless steel monitors: 6000 PSIG (410 Bar)

Maximum operating temperature:

240°F (116°C) Note: for operation to 600°F (316°C), click here

Standard calibration fluids:

Oil meters: DTE 25® @ 110°F (43°C), 0.873 sg
Water meters: tap water @ 70°F (21°C), 1.0 sg

Filtration requirements:

74 micron filter or 200 mesh screen minimum

DTE 25 is a registered trademark of Exxon Mobil


Mechanical Size Code
basic in-line CAD

DIM

Series 2

Series 3

Series 4

Series 5

Series 5

A

1-1/4" (32mm)

1-7/8" (48mm)

2-3/8" (60mm)

3-1/2" (90mm)

3-1/2" (90mm)

B

4-13/16"
(122mm)

6-9/16"
(167mm)

7-5/32"
(182mm)

10-1/8"
(258mm)

12-5/8"
(322mm)

Port Size

NPTF: 1/8", 1/4"

NPTF: 1/4", 3/8", 1/2"
SAE: #6, #8, #10
BSP: 3/8", 1/2"

NPTF: 3/4", 1"
SAE: #12, #16
BSP: 3/4", 1"

NPTF: 1-1/4", 1-1/2"
SAE: #20, #24
BSP: 1-1/4", 1-1/2"

NPTF: 2"
SAE: #32
BSP: 2"

Note: Consult factory for SAE brass meter requirements.

Download Brochure