Finish Thompson FM2000 Series - Manual (Page 8)

Section 4 - Maintenance
The FM-2000 Series is engineered for low maintenance; however, some conditions can cause increased wear on the paddle and/or possible
damage to the unit. Damage caused by corrosives incompatible with the meter’s materials of construction or abrasive fluids is not covered
under warranty.
• Periodically remove the sensor from the molded in-line body and inspect for signs of wear and obstructions. Clean the paddle of any
foreign material. Inspect the o-rings for any sign of wear, swelling, cracking or discoloration. Replace if necessary.
• The meter is designed to withstand minor condensation inside the enclosure. Prolonged excessive moisture inside the enclosure, due to
high humidity conditions, may damage the meter. Reduce the humidity or move the meter to a cool, dry location.
• Replace the four AA batteries every 12 months. The program memory is “non-volatile” and will not erase when replacing the batteries. To
replace the batteries, open the front panel of the enclosure by removing the four Phillips screws. After replacing the batteries, be sure the
foam insert is in the place and the panel gasket seal is in good condition, before closing the rear panel.
Section 5 - Warranty
Finish Thompson, Inc (manufacturer) warrants this product to be free of defects in materials and workmanship for a period of one year from
date of purchase by original purchaser. If a warranted defect, which is determined by manufacturer’s inspection, occurs within this period, it
will be repaired or replaced at the manufacturer’s option, provided (1) the product is submitted with proof of purchase date and (2) transporta-
tion charges are prepaid to the manufacturer. Liability under this warranty is expressly limited to repairing or replacing the product or parts
thereof and is in lieu of any other warranties, either expressed or implied. This warranty does apply only to normal wear of the product or
components. This warranty does not apply to products or parts broken due to, in whole or in part, accident, overload, abuse, chemical attack,
tampering, or alteration. The manufacturer accepts no responsibility for product damage or personal injuries sustained when the product is
modified in any way. If this warranty does not apply, the purchaser shall bear all cost for labor, material and transportation.
Manufacturer shall not be liable for incidental or consequential damages including, but not limited to process down time, transportation costs,
costs associated with replacement or substitution products, labor costs, product installation or removal costs, or loss of profit. In any and all
events, manufacturer’s liability shall not exceed the purchase price of the product and/or accessories
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Section 3 - Accuracy
The accuracy of these flow meters is published as Full Scale Accuracy. This means the amount of error is relevant to the Full Scale, which is
50 gpm for the FM2000. For example, if the flow meter is displaying 5 gpm, and you measure the actual flow to be 5.4 gpm, then your full
scale accuracy is calculated as (Measured-Actual) / Full Scale...or 5 minus 5.4 divided by 50 which equals .008 or .8%.
On the other hand, the Acutal Accuracy is calculated as 5 minus 5.4 divided by 5.4 which equals .074 or 7.4%. Notice this value is nearly 10X
higher. As you incrrease your flow towards the Full Scale value, your Full Scale Accuracy and your Actual Accuracy become the same.
Similarly, when using these flow meters (FM2000) to measure volume, the accuracy is affected by the flow rate. When pumping at low flow
rates, Actual Accuracy will be high. Also, small measured batches are sensitive to error incurred from varying setups, such as hose length,
valves, head.
More accuracy can be obtained by using an FM2000 or FM3000 flow meter and field calibrating the meter to the specific flow rate and setup.