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Use Figure 1 and the list below to identify the gauge and parts as
they are unpacked.
♦ The Model 4590 is the portable surface density gauge
containing a radioactive source, electronics, and
rechargeable battery packs. The gauge serial number
appears on the gauge handle, as well as on the calibration,
gauge, and warranty certificates (found on the back page of
this manual).
♦ The Scraper Plate/Drill Rod Guide is used to prepare the
test site. It is used to guide the drill rod in preparing a hole
for the source rod for direct transmission measurements.
♦ The Drill Rod is used to drill a hole for direct transmission
measurements. Under no circumstances should the source
rod be used to drill holes.
♦ The Drill Rod Extraction Tool provides leverage to remove
the drill rod from clays and other soil materials.
♦ The Moisture Probe allows you to take soil moisture
measurements without a nuclear source. Refer to the Quick
Reference card for more information.
♦ The AC Charger and DC Adapter are used to charge the
gauge batteries. The AC charger accepts 90 – 220 V AC,
50/60 Hz and supplies 12 V DC. The DC adapter allows
recharging from an automobile cigarette lighter.
♦ The Transport Case is specially fitted for safe transport of
the 4590 and associated parts. The case is water-resistant
but is not watertight. In case of inclement weather, the case
should be protected with some type of covering to prevent
intrusion of rain, etc. Always use this transport case when
transporting or shipping the gauge.
♦ Manual of Operation and Instruction
♦ Calibration Documents
♦ Gauge Certificate.
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