Introduction
Electro-Sensors introduces the Accu-Dial and Accu-Tach, advanced control devices designed for precise process monitoring and control. These devices offer economic solutions with programmable LCD displays for visual confirmation and feedback.

Product Overview

• Accu-Dial: A standalone programmable potentiometer ideal for AC/DC motor drives, temperature control, and more. It features a three-wire connection similar to traditional potentiometers.
• Accu-Tach: Available as a 2 or 3 piece system, it provides feedback measurement with additional wiring for external power supply input.

Design and Installation
Both devices are housed in a durable ABS plastic, NEMA 4 rated enclosure, and can be easily installed through a standard 3/8” hole. The Accu-Series features a 10-turn potentiometer for precision and a robust turning knob for stability in high-vibration environments.

Functionality

• Accu-Dial displays potentiometer position in user units, while Accu-Tach displays feedback in user units.
• Both devices have an LCD range from 0.000 to 9,999 for decimal-based units and 59.59 to 00.00 for time-based units.
• EEPROM protection ensures programming and calibration settings are retained.

Electrical Connections

• Accu-Dial: Connects via two power wires and one wiper wire to the process driver’s terminals.
• Accu-Tach: Requires eight wires for connection, including feedback sensor and external power supply terminals.

Performance and Specifications

• Accu-Dial is compatible with devices having pot-supply voltages of 3.9 to 15 Vdc and uses a 10k ohm potentiometer.
• Accu-Tach supports pot supply voltages up to +28 Vdc and is compatible with various sensor types for accurate LCD readouts.

Environmental and Mechanical Features
The devices operate within a temperature range of 0° C to 60° C and humidity of 0-90% non-condensing. They mount through a control panel with a footprint of 1.95” x 3.10”.

Operator Interface
Both devices feature a built-in 10k ohm potentiometer and two push-buttons for accessing variable programming and calibration modes. A lockout function is available for Accu-Tach.

Conclusion
The Accu-Series control potentiometers offer precise, reliable, and easy-to-install solutions for process control, with robust features and environmental resilience.