Rev. 2 xv
Foreword
Safety Summary
Equipment Warnings
Before energizing the equipment, the earth ground of the power receptacle
must be verified to be at earth potential and able to carry the rated current
of the power circuit. Using extension cords should be avoided. However, if
an extension cord must be used, insure the ground conductor is intact and
the cord is capable of carrying the rated current without excessive voltage
drop.
In the event that the ground path becomes less than sufficient to carry the
rated current of the power circuit, the equipment should be disconnected
from power, labeled as unsafe, and removed from place of operation.
Do not operate this equipment in the presence of flammable gases. Doing
so could result in a life-threatening explosion.
Do not modify this equipment in any way. If component replacement is
required, return the equipment to AMI facilities as described in the
troubleshooting section of this manual.
If used in a manner not specified in this manual, the protection provided
by the design, manufacture and documentation of the Model 1700
Instrument may be impaired.
Other Manual Conventions
This manual refers to measuring liquid nitrogen (LN
2
) when referring to
capacitance-based level measurement since nitrogen is by far the most
common cryogenic fluid used by this sort of instrument. This instrument
can be used to measure most any cryogenic liquid.
Instrument Configuration
The Model 1700 Instrument is configured at time of purchase as a
capacitance-based (typically liquid nitrogen) level instrument/controller.
Every configuration may be further customized by the following options:
• Table top, single rack mounting, dual rack mounting.
• Line cord: North American, European Schuko, Australia/NZ, China,
UK, pigtailed ends.
The instrument part number, shown on the serialization label located on
the underside of the instrument, as well as in a field in the instrument
Menu, identifies the configuration according to the following key:
1700-A-B-C-D-E where
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