Editorial Technical Reference

Control Unit/Transmitter

This page explains how Control Unit/Transmitter is classified within Electrical 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 processes water flow data and transmits it to monitoring systems

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Product Specifications

Technical details and manufacturing context for Control Unit/Transmitter

Definition
The Control Unit/Transmitter is a component used in water metering systems. It collects electrical signals from water flow sensors, processes the data, and transmits it to central monitoring stations or data collection units. This enables remote monitoring and management of water usage. The device is typically housed in a plastic enclosure with metal connectors and contains a printed circuit board with electronic components. It is designed for industrial and utility applications where accurate flow measurement and data transmission are required. The unit operates within a rated flow range of 0.15–3.0 m³/h, with an accuracy class of ±2% at nominal flow, according to ISO 4064. It requires a supply voltage of 24 V DC ±10% (reverse polarity protected) and consumes no more than 2.5 W at 24 V DC. The output signal is 4–20 mA, with HART protocol available, per IEC 60381-1. The operating and storage temperature ranges are -40 to 85 °C (non-condensing) per IEC 60721-3-1. Ingress protection is IP65–IP67 per IEC 60529, with IP67 for submersible versions. The enclosure material is 316L stainless steel (optional PTFE coating) per ASTM A240. Weight ranges from 1.2 to 2.5 kg depending on configuration. Process connections are threaded or flanged, sizes G1/2 to G2 per ISO 228-1. These specifications are reference values; actual model-specific values and standards must be verified with the legal manufacturer or supplier.
Working Principle
The Control Unit/Transmitter receives electrical signals from water flow sensors. It converts these signals into standardized data formats, applies calibration and compensation algorithms, and transmits the processed data via wired or wireless communication protocols to monitoring systems. The device ensures accurate flow measurement and reliable data transmission for remote monitoring and management of water usage.
Common Materials
Printed Circuit Board, Electronic Components, Plastic Housing, Metal Connectors
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Flow Range0.15–3.0 m³/hOutside this range accuracy is not guaranteedISO 4064
Accuracy Class±2 %At nominal flowISO 4064
Supply Voltage24 ±10% V DCReverse polarity protectedIEC 61131-2
Power Consumption≤2.5 WAt 24 V DC
Output Signal4–20 mAHART protocol availableIEC 60381-1
Operating Temperature-40–85 °CElectronics onlyIEC 60721-3-1
Storage Temperature-40–85 °CNon-condensingIEC 60721-3-1
Ingress ProtectionIP65–IP67IP67 for submersible versionsIEC 60529
Enclosure Material316LOptional PTFE coatingASTM A240
Weight1.2–2.5 kgDepends on configuration
Process ConnectionG1/2–G2 inchThreaded or flangedISO 228-1

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
  • Microcontroller
    Processes sensor data and manages communication protocols
    Material: semiconductor
  • RF Transceiver
    Handles wireless data transmission and reception
    Material: electronic components
  • Power Management Circuit
    Regulates and distributes power to all components
    Material: electronic components
  • Sensor Interface
    Connects to and processes signals from water flow sensors
    Material: copper contacts
  • Antenna Part
    Radiates and receives radio frequency signals for wireless communication
    Material: copper or PCB trace

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 16 bar (232 psi)
flow rate: 0.1 to 10 m/s
temperature: -20°C to +85°C
slurry concentration: Up to 5% solids by weight
Media Compatibility
✓ Clean water ✓ Cooling water systems ✓ Industrial process water
Unsuitable: High-viscosity fluids or slurries with abrasive particles >100 microns
Sizing Data Required
  • Pipe diameter (mm/inches)
  • Required flow measurement accuracy (%)
  • Communication protocol requirement (e.g., 4-20mA, Modbus, HART)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electronic component degradation
Cause: Thermal cycling and prolonged exposure to high temperatures causing solder joint fatigue, capacitor drying, and semiconductor aging.
Signal drift/calibration loss
Cause: Environmental contamination (moisture, dust, chemicals) affecting sensing elements, mechanical wear in moving parts, or power supply instability.
Maintenance Indicators
  • Erratic or fluctuating readings on the display/interface inconsistent with process conditions
  • Unusual audible alarms, buzzing, or complete silence when signals should be transmitting
Engineering Tips
  • Implement regular calibration schedules and environmental monitoring to maintain stable operating conditions (temperature, humidity, cleanliness).
  • Use predictive maintenance techniques like thermal imaging to detect overheating components before catastrophic failure occurs.

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 61010-1 (Safety requirements for electrical equipment for measurement, control, and laboratory use) CE Marking (EU conformity for health, safety, and environmental protection)

Quoted from the published standard.

Manufacturing Precision
  • Enclosure dimensions: +/-0.5mm
  • Mounting hole alignment: +/-0.2mm
Quality Inspection
  • Electrical Safety Test (dielectric strength, insulation resistance)
  • Environmental Sealing Test (IP rating verification, dust/water ingress protection)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Manufacturers of Control Unit/Transmitter

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Frequently Asked Questions

What is the rated flow range of the Control Unit/Transmitter?

The rated flow range is 0.15–3.0 m³/h, per ISO 4064. Outside this range, accuracy is not guaranteed. Verify the specific model's range with the manufacturer.

What is the supply voltage and power consumption?

The supply voltage is 24 V DC ±10%, reverse polarity protected, per IEC 61131-2. Power consumption is ≤2.5 W at 24 V DC. Confirm these values for your application.

What output signals are available?

The standard output signal is 4–20 mA, per IEC 60381-1. HART protocol is available as an option. Check the device configuration for compatibility.

What is the ingress protection rating?

The ingress protection is IP65–IP67 per IEC 60529, with IP67 for submersible versions. The actual rating depends on the enclosure and installation. Verify with the supplier.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

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

Water Metering System
View system integration details

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Control Unit/Transmitter.

Water Meter Transmitter Metering Control Module Data Transmitter Unit

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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