Editorial Technical Reference

Signal Converter/Transmitter

This page explains how Signal Converter/Transmitter is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Electronic device that converts flow meter sensor signals into standardized output signals for transmission to control systems.

Product Specifications

Technical details and manufacturing context for Signal Converter/Transmitter

Definition
A signal converter/transmitter is a critical component within flow measurement systems. It receives raw electrical signals from flow sensors, such as those in turbine, electromagnetic, or ultrasonic flow meters. The device processes and conditions these signals, converting them into standardized analog (e.g., 4-20 mA, 0-10 V) or digital (e.g., HART, Modbus, Profibus) output signals suitable for transmission over distances to indicators, recorders, controllers, or SCADA systems. This ensures accurate and noise-resistant communication between the sensor and the control infrastructure. The converter typically supports input signals of 4-20 mA per IEC 60381, with output signals also in 4-20 mA and optional HART protocol. It operates on a supply voltage of 12-36 V DC, is loop-powered, and offers accuracy of ±0.1% FS per IEC 60770. The device is designed for operating temperatures from -40 to 85 °C (IEC 60068-2-1) and storage from -40 to 100 °C (IEC 60068-2-2), with ingress protection ratings of IP65 to IP67 per IEC 60529. Isolation voltage is 1500 V AC per IEC 61010, and load resistance ranges from 0 to 750 Ω at 24 V supply. Response time is ≤100 ms for a 90% step change per IEC 61298-2. The housing is made of 316L stainless steel (ASTM A240), and weight varies from 0.5 to 1.5 kg depending on housing options. The device includes a printed circuit board, electronic components, an enclosure (stainless steel or aluminum alloy), and connectors (brass or stainless steel). It is essential to verify model-specific values and standards with the legal manufacturer or supplier before procurement.
Working Principle
The device receives low-level electrical signals (mV, frequency, or digital pulses) from flow sensors. Internal circuitry amplifies, linearizes, and isolates these signals. An analog-to-digital converter (ADC) may digitize the signal for processing by a microprocessor, which applies calibration curves, temperature compensation, and scaling. The processed signal is then converted to the desired output format through digital-to-analog converters (DACs) for analog outputs or communication modules for digital protocols, ensuring accurate, noise-resistant transmission to receiving equipment.
Common Materials
Printed Circuit Board (PCB), Electronic Components (ICs, resistors, capacitors), Enclosure (stainless steel or aluminum alloy), Connectors (brass or stainless steel)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Input Signal4–20 mACompatible with most flow sensorsIEC 60381
Output Signal4–20 mAHART protocol availableIEC 60381
Supply Voltage12–36 V DCLoop-powered
Accuracy±0.1 % FSIncludes linearity and hysteresisIEC 60770
Operating Temperature-40–85 °CElectronics; sensor may differIEC 60068-2-1
Storage Temperature-40–100 °CNon-condensingIEC 60068-2-2
Ingress ProtectionIP65–IP67Dust-tight, water-jet protectedIEC 60529
Isolation Voltage1500 V ACInput to output to powerIEC 61010
Load Resistance0–750 ΩAt 24 V supply
Response Time≤100 msFor 90% step changeIEC 61298-2
Housing Material316LStainless steel, corrosion resistantASTM A240
Weight0.5–1.5 kgDepends on housing options

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Signal Conditioning Circuit
    Amplifies, filters, and linearizes raw sensor signals
    Material: PCB with electronic components
  • Microprocessor/ASIC
    Processes digitized signals, applies calibration, and manages communication protocols
    Material: Silicon semiconductor
  • Output Module
    Generates standardized analog or digital output signals
    Material: PCB with DACs and communication chips
  • Power Supply Unit
    Regulates and distributes power to internal circuits
    Material: PCB with voltage regulators and protection components
  • Housing Part
    Protects internal electronics from environmental factors and provides mounting
    Material: Stainless steel or aluminum alloy
  • Analog-to-Digital Converter
    Digitises the conditioned sensor signal for the microprocessor.
  • Calibration Curves
    The stored curves applied to the digitised signal before output.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Signal Converter/Transmitter.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 100 bar
flow rate: 0 to 10 m/s
temperature: -40°C to +85°C
Media Compatibility
✓ Clean water and aqueous solutions ✓ Hydrocarbon-based fluids (oil, fuel) ✓ Corrosive chemicals (acids, bases) with compatible wetted materials
Unsuitable: High-vibration environments without additional mounting/isolators
Sizing Data Required
  • Sensor output signal type and range (e.g., 4-20mA, 0-10V, frequency)
  • Required output signal type and protocol (e.g., 4-20mA, HART, Foundation Fieldbus)
  • Power supply voltage and available wiring configuration

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Signal drift or inaccuracy
Cause: Sensor element degradation due to process media contamination, temperature cycling, or aging electronic components affecting calibration stability.
Complete signal loss or communication failure
Cause: Moisture ingress corroding internal circuits, power supply fluctuations damaging sensitive electronics, or connector/terminal corrosion from environmental exposure.
Maintenance Indicators
  • Erratic or unstable output readings on the control system display
  • Audible electrical arcing or buzzing from the transmitter housing
Engineering Tips
  • Implement regular calibration checks using certified reference standards and maintain environmental seals to prevent moisture/contaminant ingress
  • Install surge protection devices on power and signal lines, and ensure proper grounding to protect sensitive electronics from electrical transients

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 61508 (Functional Safety) IEC 60529 (IP Code for Enclosure Protection) IEC 61000-6-2 (EMC Immunity for Industrial Environments)

Quoted from the published standard.

Manufacturing Precision
  • Output Accuracy: +/-0.1% of full scale
  • Temperature Stability: +/-0.01% per °C
Quality Inspection
  • Calibration Verification against NIST-traceable standards
  • Environmental Stress Testing (Temperature, Humidity, Vibration)

Manufacturers of Signal Converter/Transmitter

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Bluesky
Wenzhou, Zhejiang, CN
Managed by the manufacturer
Listed on the company's own website
Listed there as: “Flow Transmitters”
View source page ↗ blueskynewenergy.com · checked 2026-09-02
Feejoy Technology (ShangHai) Co., Ltd.
Shanghai, CN
Also makes: Flow Sensor, Flow Meter, Pressure Gauge/Sensor and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Flow Transmitter”
View source page ↗ feejoygroup.com · checked 2026-09-08

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What types of flow sensors are compatible with this signal converter/transmitter?

The device is designed to be compatible with most flow sensors, including turbine, electromagnetic, and ultrasonic types. It accepts low-level electrical signals such as mV, frequency, or digital pulses. However, specific compatibility should be confirmed with the manufacturer for your exact sensor model.

What output signals does the converter provide?

It provides standardized analog outputs like 4-20 mA (per IEC 60381) and optionally supports digital protocols such as HART. Other digital protocols like Modbus or Profibus may be available depending on the model, but these are not specified in the source facts.

What is the accuracy of this device?

The accuracy is ±0.1% of full scale (FS) per IEC 60770, including linearity and hysteresis. This is a reference value; actual accuracy may vary with the specific model and application, so verify with the manufacturer.

What are the environmental limits for operation and storage?

The operating temperature range is -40 to 85 °C (IEC 60068-2-1), and storage temperature is -40 to 100 °C (IEC 60068-2-2). The device has ingress protection ratings of IP65 to IP67 per IEC 60529, meaning it is dust-tight and protected against water jets. Confirm these ratings for your specific housing option.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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