Finish Thompson FM3000 Series - Manual (Page 5)

Changing From One Range To Another
Press the “+” button to change to another range. Push the button repeatedly until the desired range is reached. The range is displayed
in the lower left hand corner of the meter (“Range 1”, “Range 2”, etc). The accumulated total for each range will be displayed in the
lower right hand corner.
NOTE: “Range 1” is factory calibrated for water-like fluids and cannot be changed. “Ranges 2,3,4 can be user calibrated (see calibration section).
Resetting Accumulated Total For each Range
Press and hold the “Set Reset” button and then the “+” button to clear the accumulated total for each range. Each range
must be individually reset.
Changing display from Flowrate or Volume
Press the “Mode Menu” button to toggle between the FLOWRATE and VOLUME (displayed as “VOL”) display modes. This
information will be displayed on the top line.
Resetting Volume Setting
With “VOL” displayed on the top line, press the “Set Reset” button to reset the total volume. This is independent of the accumulated total
(displayed in bottom right hand corner).
NOTE: Any time the “Mode Menu” or “+” button is pressed, the volume will be automatically reset to zero.
Changing Units of Measure
To change from liters to gallons or gallons to liters, press and hold the “Mode Menu” button and then the “-” button to enter
the change menu. Press the “+” button to cycle between the two. To exit the menu and save the setting, press the “Mode
Menu” button.
Calibration
While the FM-3000 has been calibrated at the factory, field calibration is possible to increase accuracy at a given flow. Use the flow-
ing steps for field calibration.
Step One – Prepare a Calibrated Container
Use either a known calibrated container or create a calibrated container by using a known weight method. In either case, use as
large a container as practical (for instance twenty liter versus one liter container).
To create a calibrated container, weigh the container empty. Fill the container with the desired amount of fluid, mark a line on the
container at water level in permanent marker and reweigh. Subtract the weight of the empty container to get the net fluid weight.
Determine the actual volume by dividing the weight by the specific gravity (density) of the liquid. For example if the fluid is water and
the net weight was 20 kg, the container has 20 liters of liquid (20 divided by 1 kg per liter which is the weight of water per liter).
Step Two – Enter Calibration Mode
To enter the calibration mode, press and hold the “Mode Menu” button and then the “+” button. “CAL” will be displayed on
the top of the screen when this mode is active.
NOTE: The meter must be in Range 2,3 or 4 to calibrate the meter. Range 1 is factory calibrated for water-like fluids and cannot
be changed.
Step Three – Measure Actual Volume
Turn on the pump motor and fill the container to the fill line from Step One. Compare the actual volume of the fluid being pumped (determined by
Step One) with the volume shown on the meter.
Step Four – Enter Actual Volume into Meter
Make sure the pump motor is “OFF” and no flow is passing through the meter. Using the “+” or “-“ buttons, adjust the volume
on the flow meter display (top line) to match the actual volume pumped. Press the “Set Reset” button to store this data. The new
calibration factor will briefly flash in lower right hand corner.
NOTE: If no reading is entered within two minutes, the meter will automatically shutoff and exit the calibration mode.
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