Columbia Research Laboratories has introduced the Model VM-300 vibration meter, a general purpose vibration measuring instrument designed for periodic routine checks of industrial equipment where portability and ease of use are required. According to the company:
- Acceleration, velocity, and displacement measurement modes are provided, along with a number of value enhancing features.
- Dual power allows the meter to be powered from its internal battery in the field or from an external AC adapter to save battery life in bench applications.
- A precision low-voltage lockout circuit prevents the meter from making erroneous readings due to low battery.
- An automatic 10 minute timeout during battery operation will not allow the meter to drain the battery while unattended.
- An optional printer can be connected to the meter for permanently recording measurements.
- An ideal preventive maintenance tool, it operates from a rugged precision piezoelectric accelerometer and incorporates a charge amplifier input stage for stability and minimizing errors.
- Operation is controlled by an internal, integrated micro-controller, acting under direction of a splash resistant seven-key membrane keypad.
- The sensor probe contains Columbia’s piezoelectric accelerometer, which outputs an electric charge proportional to the instantaneous value of the applied acceleration; this charge signal is communicated to the instrument through a low-noise coaxial cable.
- The meter is housed in a 7.5-inch by 4-inch by 2-inch plastic case with detachable probe and is supplied with a padded carrying case and AC adapter.