Finish Thompson FM2000 Series - Manual (Page 4)

Section 1 - Installation
NOTE: Avoid exposing the LCD for prolonged periods to direct sunlight or the life of the LCD may be reduced.
1. Determine which direction the flow meter display is to face. It is bi-directional and can face either to the right or left but must be kept in
the upright position.
2. Wrap Teflon tape on threads of both ends of flow meter (Item 1). Screw Hose Barb Adapter (Item 2) onto discharge end of flow meter.
Tighten securely by hand or wrench, being very careful not to over-tighten.
3. Screw 1” NPT coupling (item 3) onto the other end of the flow meter. Tighten securely by hand or wrench, being very careful not to over-
tighten.
4. Remove discharge nut, spout and o-ring (items 8, 7, 6) from PF discharge. Discard the discharge nut and spout (or save for later use if no
longer using the pump with a flow meter). Save the o-ring for use in the next step.
5. Place the flow meter adapter (item 5) into the discharge nut (item 4) supplied with the flow meter kit. Threads of the adapter will protrude
through the front of the discharge nut. Place the o-ring (item 6) inside the discharge nut (item 4). Press down on the o-ring to ensure it is
seated in the nut.
6. Screw discharge nut/adapter/o-ring assembly onto the discharge of the PF pump tube. Use a wrench to tighten securely but do not over-
tighten. This step prevents the adapter from rotating when the flow meter is installed.
7. Grasping the flow meter body (being careful not to put pressure on the digital display), screw the flow meter assembly onto the 1” NPT dis-
charge adapter on the PF Series pump tube until tight. If the flow meter display is not in the upright position proceed to step 8 for adjust-
ment.
8. Using a wrench, loosen the discharge nut (item 4) on the discharge of the PF Series tube. Position the flow meter assembly so the display
is in the upright position and retighten the discharge nut (while holding the flow meter assembly).
9. Attach 1” ID hose to the hose barb located at the discharge end of the flow meter. Secure with a hose clamp.
Warning: Use chemically compatible hose rated for the temperature of the product being pumped.
Section 2 - Operation
NOTES:
• Depending on the meter purchased, the FM-2000 is calibrated for and displays either GPM (US gallons per minute) or LPM (liters
per minute).
• The meter is shipped from the factory with 4 AA pre-installed batteries.
• The FM-2000 Series is factory calibrated to ± 1% of full-scale rate reading. Accuracy is based on laboratory testing using a PF Series
pump tube.
• Unit is factory calibrated for water. If using a fluid other than water and calibration is required proceed to section “Calibration” on page 3
before proceeding with the steps listed below.
• If battery saver mode is activated through program change, press any button to activate display. Factory default battery saver mode is NOT
activated.
Theory of Operation
Start the pump motor. Fluid flowing through the meter causes a paddle wheel to spin. Pulses generated by the spinning paddle wheel are
counted and multiplied by scaling factors. The resulting flow rate amounts and total flow amounts are displayed on the LCD readout. Pressing
the enter button located on the front panel toggles the display between flow rate and total flow or allows entry into the programming mode.
Pressing the clear total button while the total flow value is displayed will return the total to zero. The LCD indicates the mode being displayed.
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