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For the complete documentation index, see llms.txt. This page is also available as Markdown.

Parameter Settings

Setup Procedure

Button Functions (Click to Expand)

When the main screen is displayed in green backlight, the four buttons function as follows:

  • Blue Button (leftmost): Return, exit, or save settings.

  • Gray Direction Buttons:

    • Left Gray: Previous Page, decrease value, or select item

    • Right Gray: Next Page, increase value, or select item

  • Orange Button (rightmost): Rightmost button: Enter settings, edit, or confirm selection

Do not hold buttons for extended periods to avoid damage.

Button functions may change depending on the operation context to improve usability or prevent accidental presses.

1

Language Settings

The default language is English. The unit supports English, Traditional Chinese, and Simplified Chinese. To change the language, go to H04 Language.

H04 Language Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select H.System, press Orange Button (Enter).
- Select H04 Language, press Orange Button (Enter).
- Choose language, press Orange Button (Set) to confirm.
- Press Blue Button (ESC) to return to main screen.

2

Pipe Setting

Complete settings in order: A04, A06, A08.

A04 Pipe Outer Diameter

Set the pipe outer diameter by adjusting each digit individually. Press Left Gray Button to increase a digit and Right Gray Button to decrease it. After setting a digit, press Orange Button (Set) to confirm before adjusting the next digit. Please refer to A04 Pipe Outer Diameter.

A04 Pipe Outer Diameter Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select A.Measurement, press Orange Button (Enter).
- Use Gray Arrow Buttons to select A04 Pipe Outer Diameter,
  press Orange Button (Enter).
- Use Gray Arrow Buttons to choose the digit to adjust
  (highlighted in dark gray).
- Press Orange Button (Edit) to enter adjustment mode.
- Adjust digits: Left Gray Button to increase, Right Gray Button to decrease.
- Press Orange Button (Set) to confirm each digit;
  repeat for other digits as needed.
- After all digits are set, press Blue Button (Save).
  Confirm by pressing Orange Button (Save)
  (or Blue Button (NOT) to cancel).
- Press Blue Button (ESC) to return to the main screen (green backlight).

A06 Pipe Thickness

Set the pipe wall thickness. Each digit can be adjusted individually. Use Left Gray Button to increase and Right Gray Button to decrease each digit. Please refer to A06 Pipe thickness

A06 Pipe Thickness Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select A.Measurement, press Orange Button (Enter).
- Use Gray Arrow Buttons to select A06 Pipe Thickness,
  press Orange Button (Enter).
- Use Gray Arrow Buttons to choose the digit to adjust
  (highlighted in dark gray).
- Press Orange Button (Edit) to enter adjustment mode.
- Adjust digits: Left Gray Button to increase, Right Gray Button to decrease.
- Press Orange Button (Set) to confirm each digit;
  repeat for other digits as needed.
- After all digits are set, press Blue Button (Save).
  Confirm by pressing Orange Button (Save)
  (or Blue Button (NOT) to cancel).
- Press Blue Button (ESC) to return to the main screen (green backlight).

A08 Pipe Material

Set the pipe material. If no matching option is available, select custom. Please refer to A08 Pipe Material. 

A08 Pipe Material Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select A.Measurement, press Orange Button (Enter).
- Use Gray Arrow Buttons to select A08 Pipe Material,
  press Orange Button (Enter).
- Use Gray Arrow Buttons to choose the pipe material.
  If no matching option is listed, select custom.
- Press Orange Button (Set) to confirm.
- Press Blue Button (ESC) to return to the main screen (green backlight).

Plastic and metal pipes have significantly different physical properties. Selecting the wrong material may cause substantial measurement errors.

A08 Available Pipe Materials：

custom（default） 、PE、PFA、Copper、SUS316、SUS304、Steel、ABS、PVDF、PP、PVC、PVCU

3

Probe Installation Method Setting

A27 Wedge Method

Set the pipe wedge method for the probe. For how to determine the wedge method, please refer to Choose Probe Installation Method. 

A27 Wedge Method Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select A.Measurement, press Orange Button (Enter).
- Use Gray Arrow Buttons to select A27 Wedge Method,
  press Orange Button (Enter).
- Use Gray Arrow Buttons to choose the wedge method.
- Press Orange Button (Set) to confirm.
- Press Blue Button (ESC) to return to the main screen (green backlight).

4

Check Probe Spacing for Installation

Once Pipe Settings and Wedge Method (Steps 2–3) are entered, the device calculates the required spacing between the probes automatically. This value updates automatically whenever Pipe Settings or Wedge Method change. Record the spacing value and use it when installing the probes — see Mechanical Installation, "Mount the TM-1 Transducer on the Guided Track Clamp."

A29 Probe Spacing Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select A.Measurement, press Orange Button (Enter).
- Use Gray Arrow Buttons to select A29 Probe Spacing,
  press Orange Button (Enter).
- Check the required distance between probes shown in the screen
- Record the value to be used during probe installation
- Press Blue Button (ESC) to return to the main screen (green backlight).
5

Fluid Sound Velocity Setting

After completing the pipe and wedge method settings, ensure the pipe is fully filled and run Z03 Auto Initialize. The flowmeter will automatically detect the ultrasonic sound velocity of the measured fluid and configure the operating parameters accordingly. Refer to: Z03 Auto Initialize.

Z03 must be executed with the「Pipe Fully Filled」(whether the fluid is flowing or stationary does not affect the result.) Running it when not full will cause measurement errors and value fluctuations. If this happens, re-run Z03 under full-pipe conditions.

Z03 Auto Initialize Setting Steps
- From the main screen (green backlight),
  press Orange Button (Setup) to enter settings (orange backlight).
- Use Gray Arrow Buttons to select Z.Easy Setup, press Orange Button (Enter).
- Use Gray Arrow Buttons to select Z03 Auto Initialize,
  press Orange Button (Enter).
- Press the right gray Start button to begin automatic initialization.
- After completion, press Blue Button (ESC) to return to the main screen
  (green backlight).

If Z03 cannot complete successfully, or if you need to enter a known fluid sound velocity value directly, configure this settings manually instead (refer to below)

Manual Fluid Sound Velocity Setting (Click to Expand)

Complete settings in order: A10, A12.

A10 Liquid Type

Set the liquid type. Default: custom.

A12 Liquid Soundspeed

Set the liquid Soundspeed. Default: 1482.

  • The sound speed of a fluid varies with temperature. Please refer to the Liquid Temperature vs. Sound Speed Reference Table.

  • When the user sets A10 (Fluid Type), A12 (Fluid Sound Speed) will be updated accordingly based on the A10 selection.

  • The unit of A12 is determined by B04 (Flow and Sound Speed Unit).

6

Main Screen Status Check

After setup, return to the main screen. If settings are correct, the flow rate will be displayed. Check the flow signal indicator at the lower-left corner:

  • 1 bar: Poor signal quality

  • < 1 bar: Possible air bubbles or interference; "Noisy" may appear

If the signal is low, adjust the sensor installation according to the mounting guidelines and check whether the signal improves.

Troubleshooting

If any of the following issues occur during installation or setup, adjust the system as instructed.

1. Rapid Fluctuating Readings

If flow readings fluctuate rapidly, adjust A15 Damping to reduce data swings. The default damping value is 3; higher values reduce fluctuations. Set according to desired measurement stability and response speed. Refer to A15 Damping.

2. No Zero at Zero Flow

Go to A18 Low Flow Cutoff to configure forced zero.

Purpose:

  • Prevents false flow readings caused by signal drift at zero flow.

Parameter Description:

  • A18 = 0 (default): Shows all very low flows; suitable for applications requiring detection of tiny flow.

  • A18 = X (user-defined): Forces the reading to zero when flow < X.

Recommended Setting:

  • For non-low-flow applications, set an appropriate cutoff value to improve zero stability and prevent flow display during stoppage.

  • Refer to model-specific lower limit suggestions below.

Refer to A18 Low Flow Cutoff.

3. Incorrect Positive/Negative Sign Display

If the flowmeter shows the wrong sign, adjust the detection direction in A16 Direction. Refer to A16 Direction.

4. Unit Adjustment

To change the display unit, go to B Unit. Refer to B Unit.

Advanced Calibration Settings

Refer to the full parameter table for detailed settings. See: Full Parameter Reference.

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