Lake Monitors ClearView Flow Meter User Manual

Environmental Contamination

When performing routine maintenance, the system's fluid is commonly
exposed to environmental contamination. Exercise caution during
routine maintenance to prevent this type of contamination. Be sure to
change breather filter and systems air filter regularly.

Self-Generation Contamination

Self-generated contamination is a product of wear, cavitation, fluid
breakdown and corrosion. Systems that are carefully flushed,
maintained, and have fresh fluid added, mainly have self-generated
contamination. In this case, proper filtration can prevent fluid component
malfunction.

Lake Monitors 8809 Industrial Drive, Franksville, WI 53126

toll free: 800.850.6110 fax: [phone]

www.lakemonitors.com

©2007 AW-Lake Company. All rights reserved. CVMAN-907 MWR

Rev. 05/24/12

Installation, Operating

& Maintenance Manual

Materials of Construction (Wetted Components)

ClearView H2O

End Ports Brass Brass

Seals Buna-N Buna-N

Spring Stainless Steel Stainless Steel

Indicator and Casing Polycarbonate Polysulphone

ClearView +

CONTAMINATION AND FILTRATION

Recommended Filtration

The manufacturer recommends system filtration of at least 74 micron
filter or a 200 mesh screen. It has been found that if inadequate filtration
has caused meter failure, it will normally fail in the open position. Some
systems may require a magnetic filter. IMPORTANT: Meter damage
caused by excessive contamination is not covered under warranty.

Performance

Measuring accuracy: ±5% of full-scale

Repeatability: ±1% of full-scale

Flow Measuring Range: 1-30 GPM (5-110 LPM)

Turn Down Ratio (All Ranges:) 10:1

Maximum operating pressure: 325 PSIG (22.4 bar)

Maximum operating temperature:

Pressure Differential: See graph on right.

Filtration requirements: 74 Micron (200 U.S. mesh) min.

ClearView H2O: 200°F (93°C)
ClearView+: 250°F (121°C)

Mechanical Dimensions*

DIM ½" Male ¾" Male 1" Male

A 2-7/16" (62mm) 2-7/16" (62mm) 2-7/16" (62mm)

B 7-11/16" (195mm) 8-1/32" (204mm) 8-3/32" (206mm)

Port Size NPTF ½", SAE #8 NPTF ¾", SAE #12 NPTF 1", SAE #16

DIM ½" Female ¾" Female 1" Female

A 2-7/16" (62mm) 2-7/16" (62mm) 2-7/16" (62mm)

B 7-5/32" (182mm) 7-9/16" (192mm) 7-9/16" (192mm)

Port Size NPTF ½", SAE #8 NPTF ¾", SAE #12 NPTF 1", SAE #16

*Refer to Figure 1 at right.

Stabilized Contamination

The goal of filtration is to create effective protection from system
contamination. Proper filtration stabilizes contamination to allow fluid
components to function properly. A fluid system is considered
stabilized when, “contamination in” equals “contamination out”. Proper
filtration must reduce initial contamination to a stabilized level within
an acceptable time period. the system should be stabilized in time to
prevent premature wear or damage to meter components.

Contamination Sources

Fresh Fluid

When fresh fluid is stored in holding tanks, it may be contaminated
with scale or metal flakes from inside the tank. To prevent this type of
contamination, be sure to filter fresh fluid before adding to the system.

New Machinery Contamination

When building new machines, a certain amount of built-in
contamination is unavoidable. Typical built-in contamination consists
of dust, dirt, chips, fiber, and sand, flushing solutions, moisture, weld
splatters and pipe sealants. Flushing the system before operation can
reduce contamination, but cannot eliminate it totally.

Unless the system is flushed at a high velocity, some contamination
will not be dislodged until the system is in operation. System
contamination can cause fluid component malfunction.

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