Model 918B Phase Angle Multimeter

The Arbiter Systems®, Inc. Model 918B Phase Angle Multimeter is a compact, rugged, microprocessor-controlled instrument that provides ten measurement functions optimized for use in power transmission and distribution systems.

The Model 918B accepts input signals via safety-shrouded front-panel banana connectors: one pair for voltage and one pair for current. The voltage connections are made directly to the circuit under test, using leads included with the instrument. The current input is isolated from the circuit under test by a clamp-on current transformer (included).
With this CT, you can make measurements without breaking the current-carrying circuit. Direct-input CTs are available, and two available adapters allow voltage-to-voltage phase angle measurements.

A 16-character supertwist liquid-crystal display provides a clear indication of the parameter being measured and the results. Selection of functions is done with eight push-buttons. The 'Hold' function freezes the instantaneous values for all parameters with a single keystroke. The 'Minimum/Maximum' function continually records the minimum and maximum values for each parameter, within a user-specified time frame.

A unique feature is the 'Delta Phase' mode. This mode allows measurement of the phase angle between two voltages or currents, using a synchronous current (or voltage) as a reference.

Operating from both the internal rechargeable battery or the ac line, using the plug-in power supply provided, the Model 918B is well suited for both hand-held and bench top applications.

Arbiter Systems, Inc., 1324 Vendels Circle, #121, Paso Robles, CA 93446. Tel: 805-237-3831; Fax: 805-238-5717.