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ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication

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ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication

Output : 4-20mA, OCT pulse output, relay output, RS-232 / RS-485, RTD temp. input

Model Number : ST502

Power Supply : 24V DC

MOQ : 1

Packaging Details : Conventional Packaging

Delivery Time : 3-5 working days

Pipe Size : DN25-DN5000

Payment Terms : T/T

Transducers temperature : -40℉ ~ +140℉ (-40℃~+60℃)

Certification : CE; ISO9001

Velocity Range : 0.03 ~±40ft/s (0.01~±12m/s)

Place of Origin : Shenzhen

Repeatability : 0.15%

Brand Name : Flo-Instru

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ST502 Advanced Data Center Flow Measurement Instruments
Product Overview

ST502 Ultrasonic Flowmeter utilizes transit-time methods to measure liquid flow in industrial systems, delivering high-accuracy flow data through clamp-on transducers that never contact the fluid.

Key Features
  • Measures actual flow and total consumption of various liquids
  • CNC machined process with magnetic open cover technology
  • Adaptive signal processing algorithms for challenging flow conditions
  • Clear LCD display with alarm function and easy operation
  • Bidirectional flow measurement using transit-time ultrasonic technology
  • Built-in 2G SD card for historical flow data analysis
  • Simple menu system for fast configuration
Measurement Principle
TVT Technology

TVT (Transit-Time Vortex) technology combines transit-time ultrasonics with vortex shedding phenomenon, delivering unparalleled accuracy and versatility in ultrasonic flow measurement.

ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication

The device uses ultrasonic transducers installed on the pipe exterior. One transducer sends pulses downstream with flow, while the other sends upstream against flow. The time difference between signals is proportional to flow velocity.

Technical Specifications
Performance Specifications
Velocity Range0.03 ~ ±40ft/s (0.01 ~ ±12m/s)
Accuracy±0.5%
Pipe Size1"~200" (25mm~5000mm)
Repeatability0.15% of measured value
Linearity±1.0%
Fluid CompatibilityWater, Sea water, Oil, Alcohol...
Pipe MaterialPVC, stainless steel, carbon steel, copper...
Function Specifications
CommunicationModBus RS485
Analog Output4~20mA, max load 750Ω
Pulse Output0~9999Hz, OCT
Relay Outputmax 1Hz (1A@125V AC or 2A@30V DC)
Power Supply24V DC/1A max
Temperature Range-40°F~140°F (-40°C~60°C)
HumidityUp to 99% RH, non-condensing
Product Dimensions
Transmitter
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Normal Transducer
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
High-temperature Transducer
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Ultra High-temperature Transducer
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Product Display
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Communication & Output Functions

The ST502 offers multiple communication and output options for seamless integration into industrial control systems, enabling real-time data acquisition and remote monitoring.

ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Output Capabilities Summary
Output Type Function Application Examples
RS485 (Modbus) Digital communication Remote monitoring, SCADA, system integration
4-20mA Analog input/output PLC input, process feedback, DCS systems
OCT Pulse Flow totalization output Batch controllers, energy meters, flow loggers
Relay Alarm/control output Trigger alarms, control valves/pumps, flow safety protection
Wiring Diagram
ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Installation Methods
V Method

Standard method providing accurate readings for pipe diameters 25mm to 400mm (1"~16"). Requires proper transducer installation at pipe centerline with equal spacing.

 ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
Z Method

Utilizes directly transmitted signals with less attenuation. Suitable for pipe diameters 100mm to 3000mm (4"~120").

 ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
N Method

Sound waves traverse fluid twice and bounce three times off pipe walls. Suitable for small pipe diameters, improving accuracy by extending transit distance.

 ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication
W Method

Sound waves traverse fluid four times and bounce four times off pipe walls. Suitable for very small pipes (diameters less than 50mm, 2").

 ST502 Clamp-on Ultrasonic Flowmeter with Transit-Time Technology IP65 Enclosure and RS485 Communication

Product Tags:

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ultrasonic flowmeter with RS485 communication

      

IP65 enclosure flowmeter transit-time technology

      
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