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Phosphate Ester Flow Rate Monitors
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Three Materials of Construction:
Select from aluminum, brass or stainless steel construction to meet system requirements.
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Rugged and Reliable:
These monitors are constructed with all metal pressure vessels, allowing safe, permanent, installation in industrial systems.
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Unrestricted Mounting:
Allows the designer to install the monitor in any orientation; horizontal, vertical or inverted.
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High Pressure Operation:
The magnetically coupled follower allows operation to 6000 PSIG.
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Twenty-Three Different Ports Available:
Standard selection of NPT, SAE and BSP ports permits system design versatility.
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Multi-Use:
Factory calibrated for phosphate ester. These versatile monitors can be used to verify hydraulic power unit outputs and to test machinery and tools for proper fluid flow rates.
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Low Cost Precision:
Mid-scale measuring accuracy: within ±2.5%. Full-scale accuracy: within ±4%.
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ENGINEERING SPECIFICATIONS:
The Phosphate Ester in-line flow rate monitor shall:
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be factory calibrated for phosphate ester measurements.
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use the variable annular orifice technique with compression spring recovery.
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not require inlet or outlet stright plumbing, or require vertical pipe mounting.
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have a measuring accuracy of ±2.5% of full scale in the center third of the measuring range, and ±4% of full scale accuracy over the entire flow measuring range.
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have a stainless steel sharp-edged orifice.
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be Lake Monitors No. P _ _ - _ _ _ - _ _.
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MATERIALS OF CONSTRUCTION:
Wetted Components
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Component
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Aluminum
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Brass
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Stainless Steel
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High-pressure casing, end ports and tapered shaft
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Aluminum
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Brass
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#304 Stainless Steel
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Seals
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EPR
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EPR
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EPR
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Transfer Magnet
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Teflon® coated Alnico
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Teflon® coated Alnico
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Teflon® coated Alnico
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Floating Orifice Disk
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Stainless Steel
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Stainless Steel
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Stainless Steel
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All other internal parts
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Stainless Steel
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Stainless Steel
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Stainless Steel
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MATERIALS OF CONSTRUCTION:
Non-Wetted Components
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Component
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Aluminum
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Brass
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Stainless Steel
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Window Tube
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Pyrex
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Pyrex
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Pyrex
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Window Seals
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Teflon®
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Teflon®
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Teflon®
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Teflon, Viton and Kalrez are registered trademarks of duPont de Nemours & Co.
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PERFORMANCE:
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Measuring Accuracy:
±2.5% of
full-scale in the center third of the measuring range; ±4% of full-scale over the entire scale range.
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Repeatability:
±1% of full scale
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Pressure Differential:
less than 30 PSIG
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Maximum Operating Temperature:
240ºF (116ºC) Note: for operation to 600ºF (316ºC) alternate o-ring material will be required.
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Maximum Operating Pressure:
Aluminum and Brass monitors: 3500 PSIG (240 Bar) Stainless Steel monitors: 6000 PSIG (410 Bar)
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Flow Range1:
0.1-130 GPM (0.4-490 LPM)
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Standard Calibration Fluids:
DTE 25 @ 110ºF, 0.873 sg. Monitors are density corrected to 1.16 sg.
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1 To determine approximate measuring ranges multiply the range listed in the Liquid Flow Rate section of Lake's Guide to standard monitor numbers by 0.93. For example, a P3A6WB10 would have a scale range to 10 GPM * 0.93 = 9.3 GPM at full scale.
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MECHANICAL:
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DIM
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Series 3
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Series 4
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Series 5
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Series 5
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A
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1-7/8"
(48mm)
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2-3/8"
(60mm)
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3-1/2"
(90mm)
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3-1/2"
(90mm)
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B
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6-9/16"
(167mm)
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7-5/32"
(182mm)
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10-1/8"
(258mm)
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12-5/8"
(322mm)
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Port Sizes
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NPTF:1/4",3/8",1/2"
SAE:#6,#8,#10
BSP:3/8",1/2"
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NPTF:3/4",1"
SAE:#12,#16
BSP:3/4",1"
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NPTF:1-1/4",1-1/2"
SAE:#20
BSP:1-1/4"
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NPTF:2"
SAE:#32
BSP:2"
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PRESSURE DIFFERENTIAL VS FLOW RATE:
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