MULTI-USE
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 AND RELIABLE
These meters are constructed with all metal pressure vessels that allow safe, permanent installation in industrial systems.

HIGH PRESSURE OPERATION
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 AND REVERSE FLOW OPTION OFFERED
Phosphate ester flow meters are also available in bi-directional and reverse flow versions. Contact Lake Monitors for more information.

Skydrol is a registered trademark of Solutia, Inc.
Pydraul is a registered trademark of Monsanto Co.
Fyrquel is a registered trademark of AKZO Chemicals.
Houghton 900 is a registered trademark of Houghton International.

Engineering Specification

THE PHOSPHATE ESTER IN-LINE FLOW RATE METER 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/ PTFE backup (STD.) FKM or FFKM	EPR w/ PTFE backup (STD.) FKM or FFKM	EPR w/ PTFE backup (STD.) FKM or FFKM
Transfer Magnet	PTFE coated Alnico	PTFE coated Alnico	PTFE 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	PTFE	PTFE	PTFE

Pyrex is a registered trademark of Corning Incorporated

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 range¹:	0.05-140 GPM (0.2- 530 LPM)
Pressure differential:	Click here for specific pressure differential graphs
Maximum operating pressure:	aluminum and brass meters: 3500 PSIG (240 Bar) stainless steel meters: 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

¹To determine approximate measuring ranges multiply the range listed in the Liquid Flow Rate section of Lake’s Guide to standard meter numbers by 0.93. For example, a P3A6WB10 would have a scale range to 10 GPM *0.93 = 9.3 GPM at full scale.

DTE 25 is a registered trademark of Exxon Mobil

Mechanical Size Code

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.