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Tachometer Maintenance
83871-01
32
Specifications (Cont)
CONTROLS
Front Panel:
Internal:
External:
OUTPUT
Recorder:
Front panel switches (3) for reading the ALERT setpoints, PEAK HOLD value, and probe gap
voltage.
Switches on circuit board for setpoint adjustment, Relay Bypass, Monitor Bypass, and monitor
set-up.
External remote controls: Reset, Inhibit, setpoint, full scale and hysteresis adjust (t and I).
Output proportional to selected full scale RPM (and RPM/MIN) ranges. Output is protected
against continuous short circuit to ground:
+4 mA to +20 mA, +12 Vdc compliance.
+1 Vdc to +5 Vdc, 100 Ohm minimum output impedance.
0 Vdc to -10 Vdc, 100 Ohm minimum output impedance.
Transducer Power: - 2 4 Vdc or -18 Vdc per option selected in Power Supply. Output is short circuit protected.
Alerts and OK: R e l a y drives for Alerts and monitor (system) OK
RELAY CONTACT RATINGS
Relays:
5
Amps @ 120 Vac 50/60 Hz.
5 Amps @ 28 Vdc.
ENVIRONMENTAL
Temperature: O p e r a t i n g +32°F to +149°F (0°C to +65°C).
Storage -40°F to +185°F (-40°C to +85°C).
Humidity:
0
to 95%, noncondensing.
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