Product Appearance, Specifications, and Model
Appearance
Exploded View
Models & Dimensions
FU-LT008
DN08
105
64.1
49.2
40.44
36
14
FU-LT010
DN10
105
67.73
57.73
40.44
40.5
19
FU-LT015
DN15
105
71.13
61.13
50.9
45
23
FU-LT020
DN20
105
77.63
67.63
50.9
51.5
29
FU-LT025
DN25
105
84.96
74.96
61.12
58
35
1. Mechanical Specifications
Installation Method
Clamp-On
Maximum Pipe Wall Operating Temperature
Recommended ≤ 60 °C
Recommended ≤ 60 °C
-10~60°C (14~140°F)
(As fluid temperature increases, the allowable ambient temperature of the main unit must be reduced accordingly.)
Power Supply Requirement
DC 24V 200mA
Response Time
0.5 s (2 Hz) 1 s (1 Hz)
Ingress Protection
IP66*
Device Materials (by weight)
Plastic (PPS+GF, PC+GF, PA66+GF, PET, PMMA, Nylon)
Metal (Stainless Steel 304)
Electronic Components
* IP66 Rating IP66 stands for Ingress Protection 66. The IP rating is a standard that classifies the degree of protection provided by an electrical enclosure against the intrusion of foreign objects. The format is IPXX, where XX represents two digits: the first digit indicates the level of protection against contact and solid foreign objects (dust protection), and the second digit indicates the level of protection against water ingress. A higher number indicates a higher level of protection. For IP66: the first 6 means complete protection against dust ingress; the second 6 means protection against powerful water jets without harmful effect.
2. Measurement Specifications
Measurement Principle
Ultrasonic Time of Flight（Time of Flight, ToF）
Applicable Fluids
Liquids with no or minimal solids and air bubbles
Flow Velocity Range**
Recommended: ±0.3 to 6.0 m/s, Measurable: ±0.1 to 8.0 m/s
Linearity
± 0.5 % FS (>0.3m/s)
Repeatability
± 0.4 %
Accuracy
10% to 100% of F.S. (±3.0% OR)
0% to 10% of F.S. (± 0.3% FS)***
Instantaneous Data
Flow rate, flow velocity
Totalized Data
Total flow (selectable: positive, negative, or net flow)
Device Materials (by weight)
Plastic (PPS+GF, PC+GF, PA66+GF, PET, PMMA, Nylon)
Metal (Stainless Steel 304)
Electronic Components
** Flow Velocity Range Notice The specified flow velocity range is based on measurements with water in PVC pipe. Different liquids or pipe materials may affect ultrasonic signal transmission and result in a different measurable flow velocity range.
*** Accuracy Notice Accuracy is calibrated under controlled conditions using clean water at ambient temperature with CNS UPVC pipes. Actual performance may vary due to fluid properties, pipe conditions, installation, and environmental factors.
3. Electrical Specifications
Power Supply
DC 24V, 200 mA
(Excluding 4–20 mA and RS485 current)
Reverse Polarity Protection
Yes
- Analog Current Output (4–20 mA)
Wiring
3-wire configuration
Power Supply
Device shares power with the main unit, no external power supply required.
Max. Output Range (incl. error signal range)
2.4 ~ 21.6 mA
Resolution
10-bit (0–24 mA physical range)
Response Time
≤0.5 to 1 s
(matches display update rate)
Loop Resistance
600ohm @ 24VDC
4. User Interface
Languages
English, Traditional Chinese, Simplified Chinese
Units
Flow: L, ft³, Imp gal, US gal, m³ Time: Minute, Second, Hour, Day Velocity: m/s, ft/s
Display
Single-screen 3-color backlit LCD, 3 lines × 16 characters (English) Line 1: Current parameter and unit Line 2: Measurement data Line 3: Key definitions (see Human-Machine Interface section)
Digits
10 digits plus sign and decimal point
Operation Keys
4-touch keys
Wired Communication
Analog Output: Powered 4–20 mA Modbus RTU: RS-485, 2-wire NPN Output (Includes 2 m signal cable, 6-core, non-isolated)
Shipping Contents
Unless otherwise specified in the order, standard shipment includes:
FU-LT Main Unit × 1 (with upper and lower clamps)
Protective Cover for Main Unit × 1
2 m 6-pin Connection Cable × 1 (non-M12 connector)
Quick Installation Guide × 1
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