FDT-25W Wall Mounter Ultrasonic Flowmeter
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Generally, the ENT key must be pressed to enter a modification mode. If the “Locked M47 Open’
message is indicated on the lowest line of the LCD display, it means the modification operations is
locked out. In such cases, the user should go to M47 to have the instrument unlocked first before any
further modification can be made.
2.5 Steps to Configure the Parameters
The following parameters need to be configured for a proper measurement:
(1) Pipe outer diameter
(2) Pipe wall thickness
(3) Pipe materials (for non-standard pipe materials*, the sound speed for the material must be
configured too)
*Standard pipe materials and standard liquids refer to those with the sound parameters that have
already been programmed into software of the flow meter, therefore there is no need to configure
them
(4) Liner material and its sound speed and thickness, if there is any liner.
(5) Liquid type (for non-standard liquids, the sound speed of the liquid is also needed)
(6) Transducer type adapted to the flow meter. Generally the Standard M1 clamp-on transducers will
be the selected option.
(7) Transducer mounting methods (the V-method or Z-method is the common option)
(8) Check up the Space displayed on M25 and install the transducers accordingly.
(9) Store the parameter setup
For standard pipe materials and standard liquids, the following detailed step-by-step setup is
recommended.
(1) Press keys MENU
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1 to enter M11 window to input the digits for the pipe outer diameter,
and then press ENT key.
(2) Press key ▼/- to enter M12 window to input the digits for the pipe outer diameter and then press
ENT key.
(3) Press key ▼/- to enter M14 window, and press ENT key to enter the option selection mode. Use
keys ▲/+ and ▼/- to scroll up and down to the intended pipe material, and then press ENT key.
(4) Press key ▼/- to enter M16 window, press ENT key to enter the option selection mode, use
keys ▲/+ and ▼/- to scroll up and down to the liner material, and then press ENT key. Select “No
Liner”, if there is no liner.
(5) Press key ▼/- to enter M18 window, press ENT key to enter the liner thickness and then press
ENT key (if there is liner)
(6) Press key ▼/- to enter M20 window, press ENT key to enter the option selection mode, use keys
▲/+ and ▼/- to scroll up and down to the proper liquid, and then press ENT key.
(7) Press key ▼/- to enter M23 window, press ENT key to enter the option selection mode, use keys
▲/+ and ▼/- to scroll up and down to the proper transducer type, and then press ENT key.
(8) Press key ▼/- to enter M24 window, press ENT key to enter the option selection mode, use keys
▲/+ and ▼/- to scroll up and down to the proper transducer mounting method, and then press
ENT key.
(9) Press key ▼/- to enter M25 window and check up the installation space.
(10) Press MENU 2
6 to store the parameter setup (refer to M26)