Economic Type Clamp-on Ultrasonic Water Flowmeter

Category & Parameter

Specification / Value

Measurement Performance

Measurement Principle

Transit-time ultrasonic (double-balance differential signal)

Accuracy

±1.0% of reading (velocity >0.2 m/s, max ±2.0%)

Repeatability

±0.2% (max ±0.5%)

Velocity Range

±0.01 to ±12 m/s (bi-directional, low-flow cut-off 0.03 m/s)

Pipe Size Range

DN15 to DN6000 (depends on transducer model)

Fluid & Pipe Requirements

Applicable Fluids

Water, tap water, reclaimed water, cooling/chilled water (turbidity <10,000 ppm)

Straight Pipe Run

Upstream ≥10D, downstream ≥5D (minimum for stable flow profile)

Pipe Materials

Carbon steel, stainless steel, cast iron, PVC, copper, aluminum (lined pipes supported)

Electronics & Signal Outputs

Power Supply

DC 24V (AC 85–264V optional, ±10%)

Analog Output

4–20 mA (active, ≤750 Ω load, ±0.1% FS)

Pulse Output

OCT pulse (0–10 kHz, ±0.05% pulse width)

Relay Output

1× SPST relay (AC 220V / DC 30V max)

Communication Interface

RS485 Modbus RTU (2400–38400 bps)

Physical & Environmental

Protection Rating

Transmitter IP65 / Transducer IP67 (IP68 optional, submersible ≤2 m)

Operating Temperature

−20°C to 60°C (RH ≤85%)

Transducer Temperature

−30°C to 90°C (high-temp up to 160°C, ±2°C limit)

Display

2×16 LCD with LED backlight

Mounting Type

Wall-mount / DIN-rail; clamp-on V-method / Z-method

Framework / Regulation

Scope of Certification

Operational & Market Value

CE Marking

EN 61326-1 EMC standard

Stable signal performance in electrical noise environments

RoHS Directive

Restricts hazardous substances; ensures lead-free components.

Environmental safety in use and disposal

ISO 9001:2015

Audited quality management system

Consistent manufacturing quality

NIST Traceability

Traceable to national metrology standards

Provides accuracy reference for inspection and audit

IP68 Rating

IEC 60529 ingress protection standard

Ensures submersible operation up to 2 m

Target Application

Applicable Fluid Types

Typical Use

HVAC & Chilled Water Systems

Chilled water, cooling tower water, glycol mixtures

For thermal load monitoring and loop balancing

Municipal Water Management

Potable water, raw water, treated effluent

For district flow and network measurement

Industrial Process Water

Process water, demineralized water, rinsing water

Used for consumption tracking in production lines

Agricultural Irrigation

River water, groundwater, liquid fertilizers

Used for field distribution volume measurement

Aquaculture & Water Treatment

Recirculated aquaculture water, filtered water

Used for dosing control and circulation monitoring

HNF100-C Basic Modular Ultrasonic Flow Meter Parameters

Specific Parameters

Value / Description

Measurement Principle

The HNF100-C basic modular ultrasonic flowmeter is a series of high-precision ultrasonic flowmeters based on the ultrasonic time-difference principle, featuring 4-byte IEEE754 floating-point operations. It utilizes intelligent integrated hybrid signal processing and is widely used for long-term online measurement of various liquids. It can be installed without interrupting the pipe flow and, when equipped with a temperature sensor, can achieve heat measurement. It is widely applied in process control, production measurement, trade settlement, and has penetrated into industries such as water supply and drainage, metallurgy, petrochemicals, water conservancy projects, and energy monitoring.

Nominal Diameter Range

15mm-6000mm

Measurement Accuracy

+/-1%

Flow Rate

≥0.2m/s

Display

6×12 Chinese or 6×24 Western characters dot matrix backlit LCD, supports five languages: Chinese, English, Italian, Turkish, and Spanish

Medium Temperature Range

-30~160°C

Ambient Temperature Range

Host: -20~60°C; Sensor: -30~160°C

Measuring Medium

Water, seawater, industrial wastewater, acid-base solutions, alcohol, beer, various oils, and other single homogeneous liquids that can conduct ultrasonic waves

Transmitter Housing Material

Steel, stainless steel, cast iron, PVC, copper, aluminum, and all other dense pipes, allowing for lining

Signal Output:

1 channel 4~20mA current output
1 channel OCT pulse output
1 channel relay output

Signal Input

3routes 4-20mA current input, precision 0.1%, can collect signals such as temperature, pressure, and level
Can connect to three-wire/four-wire PT100 platinum resistance, realizing cold and heat measurement

Communication Interface

Isolate the RS485 serial interface, allowing for upgrades to the flowmeter via a PC, supporting protocols such as MODBUS

Power Supply

DC8-36V or AC85-264V (optional)

Wetted Parts Material

ABS Engineering Plastic

Protection Level

Host: IP30; Sensor: IP68

Power Consumption

1.5w