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| Phosphate Ester Flow Rate Meters |
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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.
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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) |
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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) |
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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 |
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| 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" |
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 Download for more information |
| PDF files contain much more in-depth information about this product |
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