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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

Easy Setup: Z02 Auto Pipe Spec

Using patented sensing technology, the Z02 measures the pipe dimensions and automatically selects the closest matching pipe specification from the internal database.

If the measured size does not match any standard specification (e.g., due to pipe deformation or an unsupported pipe type), the system will apply a default pipe specification as the pipe size setting. See A02 for reference.

  • Due to tolerances or other factors, the matching result may be incorrect, which can affect measurement accuracy. Always verify the result after running Z02.

  • The default A02 setting is CNS UPVC. If you are using a metal pipe or any non-UPVC pipe material, verify and update A02 after running Z02 to ensure accurate measurement.

Z02 Auto Pipe Spec 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 Z02 Auto Pipe Spec, press Orange Button (Enter).
• Press Right Gray Button to start Auto Pipe Spec.
• Press Blue Button (ESC) to return to the main screen (green backlight).

If your pipe is not listed in the database, or if the pipe size does not match correctly after using Z02, configure the pipe settings manually instead (refer to below)

Manual Pipe Setting Steps (Click to Expand)

Complete settings in order: A02, A04, A06, A08.

A02 Present Pipe Spec

Select the pipe spec according to the installed pipeline. If no match is available, choose Custom and set outer diameter, wall thickness, and material in A04, A06, and A08. If a standard spec is chosen, these values will be applied automatically. Specifications may vary by model; please refer to A02 Present Pipe Spec.

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.

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

A08 Pipe Material

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

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

Fluid Sound Velocity Setting

After completing the pipe 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).

4

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.

FU-LT
008
010
015
020
025

Recommended Lower Limit

1 LPM

1 LPM

2.5 LPM

2.5 LPM

5 LPM

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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