Phosphate Ester Flow Rate Meters

Phosphate Ester Flow Rate Meters

Compatible with aviation lubricants such as Skydrol®, as well as fire-retardant fluids such as Pydraul®, Fyrquel® and Houghton 900® series.
Choice of three materials 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.
Multi-user: Factory calibrated for phosphate esters, these versatile meters can be used to verify hydraulic power unit outputs, as well as test machinery and tools for proper fluid flow rates.
Rugged & reliable: These meters are constructed with all metal pressure vessels, allowing safe, permanent installation in industrial systems.
High pressure opertion: The magnetically coupled follower design allows operation to 6000 PSIG.
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 & reverse flow option offered:
Phosphate ester flow meters are also available in bi-directional and reverse flow versions. Contact Lake Monitors for more information.

Engineering specifications:

The Phospate ester in-line flow rate shall:
• Include a direct-reading scale corrected for phosphate ester media.
• 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.
• Be Lake Monitors No. P _ _ – _ _ _ – _ _

Materials of Construction (Wetted Components)
	Aluminum	Brass	Stainless steel
High-pressure casing, end ports and tapered shaft	Aluminum	Brass	303 Stainless steel
Seals	EPR w/Teflon backup (STD.) Virton or Kalre	EPR w/Teflon backup (STD.) Virton or Kalre	EPR w/Teflon® backup (STD.) Virton® or Kalre
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

Materials of Construction (Non-Wetted Components)
	Aluminum	Brass	Stainless steel
Window Tube	Pyrex	Pyrex	Pyrex
Window Seals	Teflon	Teflon	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	0.5-140 GPM (0.2-530 LPM)
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) alternate o-ring material will be required.
Standard calibration fluids	DTE 25® @ 110°F (43°C), 0.873 sg meters are density corrected to 1.15 sg
Filtration requirements	74 micron filter or 200 mesh screen minimum

Mechanical Size Code

DIM	Series 2	Series 3	Series 4	Series 5	Series 5
A	1-1/14" (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"