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General Description
SECTION I
The Hastings Digital Vacuum Gauge, Model DNV-33D, incorporates proven Hastings thermo-
pile technology to produce a linear vacuum gauge that covers the range of 1-1000 mTorr. The
digital display reads directly in mTorr. The instrument provides an analog output signal which
may be used to drive a remote indicator for recording, data logging, etc. The output is scale is
1 volt for 1000 mTorr.
The DNV-33D also includes dual set points (A set and B set) with LED indicators located on
the front panel. Relay contacts are also provided for remote switching.
The rear panel of the instrument provides access to terminal blocks for AC power cord, gauge
tube, relays and analog output connections. The calibration adjustment potentiometers may also
be accessed through the back panelof the unit. The instrument is factory calibrated on a stan-
dard average curve for DNV-33 vacuum gauges.