Lake Monitors ClearView+ Flow Meter (Polysulphone) - Manual (Page 2)

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
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:
ClearView H2O: 200°F (93°C)
ClearView+: 250°F (121°C)
Pressure Differential: See graph on right.
Filtration requirements: 74 Micron (200 U.S. mesh) min.
Materials of Construction (Wetted Components)
ClearView H
2
O ClearView +
End Ports Brass Brass
Seals Buna-N Buna-N
Spring Stainless Steel Stainless Steel
Indicator and Casing Polycarbonate Polysulphone
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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.
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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*Refer to Figure 1 at right.