Overview
The Yokogawa 251409FAZZ DC Ammeter is a precision analog panel meter designed for measuring DC current with a center-zero scale configuration. Rated at 75-0-75A, this meter provides bidirectional current measurement capability, making it essential for applications requiring detection of current flow in either direction. Built to Yokogawa’s established standards for industrial measurement instruments, the 251409FAZZ delivers consistent accuracy and reliability in demanding control environments.
Key Features
- Center-zero scale (75-0-75A) enables measurement of positive and negative current flow
- DC ammeter optimized for industrial automation and process control applications
- Analog moving-coil design provides direct visual indication without external power
- Standard calibration accuracy ±2% of full scale
- Meets ANSI Specification C-39.1 for precision measurement
Technical Specifications
Specifications for analog panel meters of this type typically include:
- DC ammeter with shunt input (50 mV nominal input)
- Center-zero configuration for bidirectional measurement
- Accuracy: ±2% of full-scale value at 25°C
- Maximum overshoot: 40%
- Scale layout: 90-degree pointer rotation
- Suspension system: Pivot and jewel for vibration-resistant operation
Typical Applications
- Battery charging/discharging current monitoring
- Reversible motor current indication
- Rectifier and converter output monitoring
- Laboratory power supply metering
- Industrial process control requiring bidirectional current sensing
Compatibility & Replacements
Compatible With
- DC power sources and circuits requiring 50 mV shunt input signal
- Industrial control panels and enclosures
- Standard DIN and panel-mount configurations
- Legacy process control systems and equipment
Replaces / Drop-In Replacement For
The 251409FAZZ is a direct replacement for identical part numbers and is compatible with systems originally specified for Yokogawa center-zero DC ammeters rated 75-0-75A. Verify compatibility with your system integrator before ordering.
Works With
- External shunt resistors (50 mV rated) for current measurement
- Standard industrial wiring and panel interconnects
- DC power supplies 100-240V (external auxiliary supply if panel illumination used)
