Model 3430 Plus & 3440 Plus
The Troxler Model 3430 Plus and 3440 Plus Surface Moisture-
Density Gauges can display measurement results in either SI
(metric) units or English units. Also, HM-181 of 49 CFR changes
the standard units of radioactivity in the United States from the
English unit of curies (Ci) to the SI unit of becquerel (Bq). This
requires the shipper to convert the activity on the Bill of Lading
from curies to becquerels (GBq). Until everyone is accustomed to
the SI units, it is permitted to follow the SI units with the English
units in parentheses to clarify the description [for example: 1.48
GBq (40 mCi)].
To help our users convert from English units to SI units, the table in
this appendix provides SI conversion factors for common English
units relevant to the gauge.
CONTENTS
Measurement Units ....................................................................... E–2
Radiological Units ........................................................................ E–2
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