Bently Nevada 990/991 Test Adapter

The Bently Nevada 990/991 test adapter inverts and isolates the PROX OUT signal from the 990 vibration transmitter so that you can connect 990 transmitters to ac-powered diagnostic equipment. The adapter modifies the PROX OUT signal so that it matches our standard Proximitor sensor signals by performing these functions:

Shifts the phase of the PROX OUT signal by 180º by changing the voltage from positive to negative
Isolates the transmitter from diagnostic equipment so that equipment with different grounds will not affect the transmitter’s 4-20 mA loop signal
Reduces noise in the surrounding area from affecting the PROX OUT signal

Features

• Small size and weight for portable operation
• Battery or ac adapter power options
• Automatic shutoff powers down when the battery is low
• 2 channels, display an orbit for XY probe configurations