Overview
The Triplett 231-PL is a classic analog panel meter built to measure alternating current (AC) voltage in the 0–10 volt range. This Triplett 231-PL voltmeter combines proven analog measurement technology with robust construction, making it suitable for industrial equipment, test benches, and control panels where reliable voltage monitoring is required. Manufactured by Triplett Electrical Instrument Company, a respected name in test equipment since the mid-20th century, the 231-PL delivers consistent, dependable readings without requiring external power.
Key Features
- 0–10 VAC measurement range for precise AC voltage monitoring
- Analog moving-coil galvanometer movement for immediate visual indication
- Panel-mount design with threaded stud connection for secure installation
- No external power supply required—fully passive measurement
- Durable metal case and calibrated dial for long service life
- Industry-standard accuracy and repeatability in measurement
Technical Specifications
The Triplett 231-PL features the following specifications:
- Measurement Type: AC Voltage (Alternating Current)
- Range: 0–10 VAC
- Meter Movement: Analog (moving-coil galvanometer)
- Power Supply: None required (passive instrument)
- Mounting: Panel mount, threaded stud terminal
- Display Type: Calibrated dial face with pointer indication
- Case Material: Steel
- Manufacturer: Triplett Electrical Instrument Company
Typical Applications
The Triplett 231-PL 0–10 VAC panel meter is commonly deployed in the following scenarios:
- Voltage monitoring on industrial control panels and switchboards
- Laboratory test benches and equipment calibration stations
- Telecommunications and broadcast equipment monitoring
- Maintenance and troubleshooting of low-voltage AC systems
- Educational demonstrations of AC voltage measurement
- HVAC and electrical diagnostic applications
Compatibility & Replacements
Compatible With
- Standard 0–10 VAC measurement circuits and signal sources
- Industrial control panels rated for 0–10V AC input monitoring
- Laboratory and diagnostic test equipment configurations
- Panel-mount installations with standard threaded stud terminal connections
Replaces / Drop-In Replacement For
The Triplett 231-PL is a direct replacement for OEM or legacy Triplett 231-PL installations. Verify meter dimensions and terminal thread size (typically 10–32 fine or similar) with your panel mount specifications before installation. Contact your system integrator to confirm compatibility with specific OEM applications.
Works With
- AC voltage circuits: 0–10 VAC range measurement
- Standard electrical test and measurement environments
- Panel-mount enclosures with appropriate cutout dimensions
- Legacy industrial control systems requiring analog voltage indication
