AccuPos - Valve Position Sensor®

Precision Valve Positioning Made Simple

The AccuPos Valve Position Sensor by Freedom Automation Inc. is a compact, reliable, and cost-effective solution for accurate valve position detection. Designed for water and wastewater applications, the AccuPos delivers exceptional performance with minimal maintenance.

AccuPos valve position sensor on white background

Features & Benefits

  • Compact Design
    Slim, low-profile form factor for tight installations and retrofits.

  • No Mechanical Linkage Required
    Fewer moving parts means reduced wear and long-term maintenance.

  • Reliable Performance
    Engineered to operate consistently in demanding environments.

  • Cost-Effective Solution
    An affordable alternative to complex valve feedback systems.

  • Simple Integration
    Connects easily to SCADA systems and control panels.

  • Long Service Life
    Durable design reduces replacement frequency and downtime.

  • Versatile Mounting Options
    Compatible with a wide range of valve types and setups.

Industry Insight: Why Flow Monitoring Matters

Water districts today are under growing pressure to combat water scarcity and reduce system losses. Monitoring flow between distribution zones has become critical for optimizing resource management — but traditional flow meter installations are often cost-prohibitive. AccuPos offers a practical, cost-effective alternative, delivering the same insights through precise valve position feedback.

Real-World Applications

The AccuPos Valve Position Sensor is designed to integrate seamlessly into a variety of automation environments and system architectures.

Valve Position Feedback

Provides accurate valve position data during real-time operation for better process control.

SCADA System Integration

Provides accurate valve position data during real-time operation for better process control.

Diaphragm Valve Compatibility

Easily mounts to diaphragm valves with stem kits—no complex mechanical linkage required.

Control Panel Applications

Ideal for use in control panel builds, offering simple wiring and reliable feedback integration.

Flow Meter Alternative

Cost-effective replacement for flow meters in certain applications where position feedback is sufficient.

Remote Site Automation

Reliable performance for remote and standalone sites with minimal maintenance requirements.

AccuPos sensor mounted on CLA-VAL diaphragm valve

Sensor Type:     Non-contact position sensor

Sensing Range:    Approximately 30–300 mm

Output Signal:    4–20mA analog output

Operating Voltage:  10–30 VDC

Mounting Style:    Designed for diaphragm valves with stem kits; target mounts on the stem

Calibration Method:  Push-button calibration

Environmental Rating: Durable hard anodized aluminum case suitable for harsh environments

Operating Temperature Range: Wide operating range of -20°C to +60°C (-4°F to 140°F)

Cable Type / Length:  6 ft shielded analog cable

Compatible Valve Types: Diaphragm valves equipped with stem kits

Why Choose AccuPos

Quick Installation & Calibration

Installs in minutes with simple wiring and push-button calibration—saving time in the field.

Cost-Effective Performance

Delivers reliable valve position feedback without the high cost of flow meters or complex sensor systems.

SCADA-Ready Integration

Provides accurate analog output (4–20mA) for seamless compatibility with existing SCADA systems.

Built for Harsh Environments

Anodized aluminum housing ensures durability in tough water and wastewater applications.

Cost Comparison: AccuPos vs Traditional Flow Meters

Smarter Savings Without Compromise

Traditional flow meter installations can cost over $40,000 per unit—making them impractical for many applications. In contrast, AccuPos delivers the same valve position and flow data for a fraction of the cost.

One five-valve pressure reducing vault installation using AccuPos saved a client over $130,000 in parts and labor compared to a traditional flow meter setup.

Real-World Savings Example:

A better solution, at a better value—without sacrificing reliability or performance.

Installed AccuPos sensor on diaphragm valve with stem kit

Trusted by Leading Water Districts

The AccuPos Valve Position Sensor is already making an impact across Southern California. Trusted by operators and engineers alike, it has been successfully deployed in municipal systems to improve accuracy, reduce costs, and modernize valve monitoring.

Organizations using AccuPos include:

  • San Dieguito Water District

  • R.E. Badger Filtration Plant

  • Vallecitos Water District

  • Santa Fe Irrigation District

Ready to Upgrade Your Valve Monitoring?

The AccuPos Valve Position Sensor is a smarter, simpler, and more cost-effective solution for SCADA systems.

FAQ

  • AccuPos is designed specifically for diaphragm valves equipped with stem kits, including CLA-VAL models. It can also be adapted to other valve configurations — contact us for compatibility guidance.

  • Yes — in many cases, AccuPos provides the same flow indication through valve position feedback, without the high cost and complexity of a traditional flow meter setup.

  • Absolutely. With its 4–20mA analog output, AccuPos integrates easily with most SCADA and control panel systems.

  • It features a simple push-button calibration process and installs in minutes — no complex setup required.

  • AccuPos is built with a hard anodized aluminum enclosure and is tested for durability in harsh conditions, including water/wastewater environments.