Siemens 7ME35302AA000AA1 SITRANS FUS1010 Flow Meter Unit

Module Feature

7ME35302AA000AA1 belongs to Siemens SITRANS FUS1010 series ultrasonic flow transmitter. It adopts dual-channel transit-time measurement architecture and works with external clamp-on ultrasonic sensors without cutting the process pipe. It can calculate volumetric flow, totalized flow and flow velocity. Built-in configurable analog and pulse outputs, HART and Modbus communication options are available. It supports multiple pipe materials and pipe size ranges, and is suitable for clean single-phase liquids. Hazardous area ATEX approvals are optional. Widely applied in water supply, wastewater, HVAC, petroleum and chemical process pipelines.

Working principle

Two ultrasonic sensors are mounted on the outer pipe wall, alternately sending and receiving sound waves along and against the flow direction. The transmitter calculates the time difference between upstream and downstream acoustic signals to derive fluid velocity and volumetric flow. It continuously monitors signal strength and sound speed, and triggers alarm when signal quality drops below threshold. Configuration and data logging can be done via Siemens flow software.

Onboard components

Main control board, ultrasonic signal driver and receiver circuit, DSP calculation unit, analog/digital I/O terminal block, pulse output circuit, communication interface, local display and keypad.

LED indicators

Front panel LEDs indicate power supply, measurement active, good signal quality, alarm and communication status.

Hardware self‑diagnosis

Automatic self-check after power-up. Detects sensor cable breakage, low signal amplitude, pipe parameter mismatch, internal hardware fault and communication timeout, and stores alarm codes.

Programming software

Siemens SITRANS F configuration software, used for pipe parameter setup, sensor spacing calculation, range configuration, totalizer reset and firmware upgrade.

Electrical & Process Parameters

Model:7ME35302AA000AA1 Brand:Siemens Device type:Ultrasonic Flow Transmitter Measurement principle:Transit-time Medium:Clean single-phase liquid Signal:4-20mA, pulse, HART / Modbus optional Function:Non-invasive volumetric flow and totalization measurement

Mechanical & Structure

Mounting:Wall or panel mounting Protection class:IP65 Housing:Rugged metal enclosure

Environmental

Operating temperature:-20℃ ~ +60℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:CE, ATEX optional Status:Siemens original ultrasonic flow spare

Installation

Mount transmitter away from strong vibration and electromagnetic interference. Install clamp-on sensors on straight pipe section following upstream and downstream run requirements. Use matched shielded sensor cables and set pipe OD, wall thickness and sound speed parameters before calibration. Apply acoustic couplant at sensor contact surface.

Interface

Ultrasonic sensor terminals, 4-20mA analog output, pulse output, digital I/O, communication bus port, AC/DC power terminals.

Diagnostic

Weak signal: Improper sensor clamping, insufficient couplant, heavy scaling on pipe inner wall, air bubbles inside liquid. Flow reading jumps: Turbulence, insufficient straight run, pipe vibration. No measurement: Broken sensor cable, wrong sensor spacing. Communication failure: Wrong bus address, damaged communication wire.

Product BriefSiemens 7ME35302AA000AA1 SITRANS FUS1010 dual-channel ultrasonic transmitter, clamp-on non-intrusive liquid flow measurement, for water, oil and industrial pipeline monitoring.