1900/27 Vibration Monitor Operation and Maintenance Manual
40
5.1.3 Monitor Power Specifications
AC/HDC Version
AC Voltage: 85 Vac
rms
to 264 Vac
rms
DC Voltage: 110 Vdc to 370 Vdc
Current: less than 0.12 A
rms
Max
Frequency: DC or 47 Hz to 440 Hz
Low DC Version
Voltage: 18 Vdc to 36 Vdc
Current: less than 0.3 A Max
5.1.4 Relay Specifications
Relay Contact Ratings (noninductive load):
Maximum Switched Power: 180 W, 1800 VA
Maximum DC Voltage & Current: 28 Vdc at 6 A
Maximum AC Voltage & Current: 300 Vac at 6 A
Relay Dielectric Strength (at sea level):
Contact to Contact: 750 V
rms
Contact to Coil: 1500 V
rms
Relay Life Expectancy:
Mechanical: 100,000,000 operations
Electrical: 180,000 operations at 6 A, 120 Vac
Insulation Resistance: 100,000,000 Q minimum at 20oC,
500 Vdc, 50% relative humidity
5.1.5 Signal Conditioning
Fullscale Range: 2 in/s
pk
(50.8 mm/s
pk
) Note: Full scale is limited by
maximum input above 614 Hz. The Maximum input is
2 volts peak, or 20 g peak. 20 g peak at 614 Hz is
equivilant to 2 in/second peak. For frequencies above
614 Hz, the maximum full scale range is equal to
(1228/frequency) in/s.
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