FLOMEC TM50-N-LP (01) PDF Document

Before using your FLOMEC TM50-N-LP, please note the following:

• Use the meter only with water and other chemicals compatible with its wetted components.

• Do not use the meter for fuel or incompatible chemicals.

• This meter is not legal for trade applications.

• The computer display measures in gallons or litres. A pulse output cable is also provided to deliver raw pulses for a digital signal to customer interfacing equipment.

• The meter is very sensitive to electric noise. Avoid operating it within 1 to 2 inches of some electric motors or other sources of electronic noise.

You can install your FLOMEC TM50-N-LP meter in-line either horizontally or vertically, or at the end of the hose adjacent to the nozzle. Installation to metal connections is not recommended. Follow these steps:

1. Plan to install the turbine with a minimum straight pipe length:

• Upstream from the turbine, allow a minimum straight pipe length of 10 times the internal diameter of the turbine.

• Downstream from the turbine, allow a minimum straight pipe length of 5 times the internal diameter of the turbine.

2. For Spigot (Pipe) End connections, use only primer and solvents approved for PVC gluing. For NPT Fittings, wrap all connections with 3 to 4 wraps of thread tape or use pipe thread sealant. Ensure the tape does not intrude into the flow path.

3. Attach the meter with the arrow on the housing pointed in the direction of fluid flow.

4. For NPT Fittings, hand tighten the meter at the housing ends. Do not use a wrench or similar tool, as this can damage the housing.

Please observe the following warnings and cautions:

• **WARNING:** Compatibility of this product’s material and the process fluid and/or environment should be considered prior to putting into service.

• **WARNING:** The product should never be operated outside its published specifications for temperature or pressure. See specifications for your model.

• **WARNING:** Make sure flow and pressure have been eliminated from the process pipe prior to installing or removing the product.

• **WARNING:** Always use appropriate thread sealant when connecting the product to process piping.

• **CAUTION:** To protect against leakage, seal all pipe threads with an appropriate sealing compound. Make sure the sealing compound does not intrude into the flow path.

• **CAUTION:** Installation near high electromagnetic fields and high current fields is not recommended and may result in inaccurate readings.

• **NOTE:** If connecting to new male pipe threads, burrs and curls can adversely affect accuracy. Correct the problem prior to turbine installation.

The FLOMEC TM50-N-LP provides a raw pulse output through its cable. For each rotation of the turbine rotor, a specific number of pulses are transmitted. The pulse amounts can vary depending on meter size, flowrate, and fluid type. The pulse cable’s White wire is the signal and the Black wire is common (GND).

If your interface device does not have an internal pull-up resistor, you must use a minimum 820 ohms resistor connected between the signal wire and a 5-30 VDC power source.

The typical pulses per gallon for various meter sizes are as follows:

A Calibration Report with specific calibration information for your meter is also included for your reference.

Before using the meter, check its accuracy and verify the calibration by following these steps:

1. Ensure there is no air in the system by starting the flow until it runs steadily. Then, stop or divert the flow using a valve or nozzle.

2. Meter an exact known volume into an accurate container. For the best results, meter with one continuous full stream.

3. Check the volume against the display or your recording equipment. If the amount metered is accurate, no further calibration is needed. If it is not accurate, refer to the Calibration Section for further instructions.

The computer on your FLOMEC TM50-N-LP is always on and maintains two totals:

• **Cumulative Total (TOTAL 1):** Provides continuous measurement and cannot be manually reset.

• **Batch Total (TOTAL 2 BATCH):** Can be reset to measure flow during a single use.

When the Cumulative Total reaches 999,999, an X10 icon will be highlighted, indicating you need to add one zero to the 6 digits shown. On the next rollover, an X100 icon will appear, indicating two zeros must be added.

A small propeller icon is highlighted when fluid is flowing through the meter.

To operate the display:

• **Switch Views:** Briefly press the DISPLAY button to switch between TOTAL 1, TOTAL 2 BATCH, and FLOWRATE.

• **Reset Batch Total:** Press DISPLAY briefly to show the TOTAL 2 BATCH screen, then hold the DISPLAY button for 3 seconds to reset the Batch Total to zero.

• **View Flowrate:** Press and release the DISPLAY button until the FLOWRATE icon appears. The display will indicate the rate of flow. The factory-set time base will be highlighted (M = minutes, H = hours, D = days).

Your FLOMEC TM50-N-LP has both factory and field calibration settings.

Factory Calibration (FAC):

All units are configured with a “factory” calibration, indicated by a “FAC” icon on the top line of the display. This calibration is permanently programmed and not user-adjustable. To toggle between available factory-set units of measure (e.g., gallons “GL”, litres “LT”, imperial gallons “IGL”, quarts “QT”):

1. Hold the CALIBRATE button.

2. While holding CALIBRATE, briefly press the DISPLAY button to cycle through the units.

Switching between units converts the totalized volume automatically (e.g., 10.00 gallons will read as 37.85 litres).

Field Calibration:

The “field” calibration can be set by the user and modified at any time. When a field calibration is active, the FAC icon will no longer be visible on the display. Totals and flowrate will be derived from this user-set calibration.

For the most accurate calibration results, you must meet the meter’s minimum flowrate requirements. Dispense at a flowrate that best simulates your actual operating conditions, avoiding “dribbling” or repeatedly starting and stopping the flow.

The minimum flowrates for TM Series Meters are:

Use the following correction factor method to perform a field calibration. For best results, the meter should be installed and purged of air first.

1. To enter calibration mode, press and hold the CALIBRATE and DISPLAY buttons for about 3 seconds until you see “FLdCAL”. Release both buttons, and you will see “CF – 00.0”.

2. You can now enter a correction factor from -99.9% to +99.9%. The first position will be for the sign (+/-). A “+” appears as an “underscore” and a “-” appears as a “hyphen”. Use the DISPLAY button to select a position (sign or number) and the CALIBRATE button to change its value (toggle +/- or scroll 0-9).

3. Use the DISPLAY and CALIBRATE buttons to enter the percentage of change you want the display to correct for.

4. When satisfied with the value, press both CALIBRATE and DISPLAY buttons simultaneously. “CALEnd” will be displayed, and the unit will return to normal operation. The FAC (factory calibration) icon will no longer be visible, and the correction will be applied to all enabled units.

5. To return to factory calibration (FAC), press and hold both CALIBRATE and DISPLAY buttons for about 3 seconds until “FACCAL” is displayed. Release the buttons. The unit will return to normal operation, and the FAC icon will be visible again.

The FLOMEC TM50-N-LP is virtually maintenance-free. However, it is important that the rotor moves freely. Keep the meter clean and free of contaminants.

If the rotor does not turn freely, apply a penetrating lubricant on the rotor, shaft, and bearings. Remove any debris or deposits from the rotor using a soft brush or small probe. Be careful not to damage the turbine rotor or supports.

Please note these cautions:

• **CAUTION:** Blowing compressed air through the turbine assembly could damage the rotor.

• **CAUTION:** Do not allow liquids to dry inside the turbine.

• **CAUTION:** Handle the rotor carefully. Small scratches or nicks can affect accuracy.

If the display becomes dim, blank, or shows a “LoBAtt” message, replace the two 3-volt lithium batteries. The batch and cumulative totals, as well as field and factory calibrations, are retained when batteries are removed.

Follow these steps:

1. Remove the four Phillips-head screws from the face of the meter and lift the faceplate from the turbine.

2. Remove the old batteries and clean any corrosion from the terminals.

3. Install new batteries (P/N 113520-1 Kit). Make sure the positive post is in the correct position. Do not mix old with new batteries or use other brands.

4. When the batteries are replaced, the faceplate will power ON. Check the display to ensure normal functions have resumed before assembling again.

5. Reseat the batteries if necessary, and position the faceplate on the turbine housing. To avoid moisture damage, make sure the seal is fully seated. Tighten the four screws on the faceplate.

Battery Warnings:

• **WARNING:** Avoid mechanical or electrical abuse. Batteries may explode or cause burns if disassembled, crushed, or exposed to fire or temperatures in excess of 212°F (100°C). Do not short circuit or install with incorrect polarity. DO NOT INCINERATE.

• Open battery cells should be disposed of in accordance with local regulations. Lithium batteries are best disposed of as a non-hazardous waste when fully or mostly discharged.

Design Type: Turbine

Wetted Components:

• Housing: PVC

• Journal Bearings: Ceramic

• Shaft: Tungsten Carbide

• Rotor and Supports: PVDF

• Retaining Washer: Stainless Steel

Max. Working Pressure: 225 PSIG @ 73° F

Operating Temperature: +32° to +140° F (Do not allow fluid to freeze inside meter.)

Storage Temperature: -40° to +158° F

Accuracy with Computer: ± 3.0% of reading (Accuracy can be improved with field calibration)

Cable Length: 5 FT.

Flow Range: