User's Manual

VRT T
RANSPONDER
O
VERVIEW
VRT Transponder—User Guide Page 8
AMCO Automated Systems, October 2002 Last Saved:
11/13/2002 10:25 AM
from 10:15:00 AM until 2:29:59 PM. TOU registers can span midnight –
a start time of 08:00:00 PM with a stop time of 01:59:59 AM is valid.
Index Drive Size / Subcounts per Revolution / Pre-Dividers. The
number of subcounts recorded with each revolution of the drive dial on 1-
ft
3
and 2-ft
3
indexes is one. A 1-ft
3
index requires 100 revolutions to yield
100 ft
3
and a 2-ft
3
index requires 50 revolutions to yield 100 ft
3
.
Therefore, the pre-divider for a 1-ft
3
index is 100 and for a 2-ft
3
index it is
50.
Pressure Compensation Factor. When a transponder is used in
conjunction with a pressure compensated index a compensation factor
can be programmed into the transponder memory by the utility at the
time of installation. This instructs the transponder’s microprocessor to
compute adjustments to the meter reading as needed. Compensation
factors are unique for specific indexes and can be obtained by contacting
AMCO Automated Systems’ Customer Service Department at (304) 757-
3300.
Specifications
The following table shows the VRT Transponder specifications:
Power
One (1) lithium – Thionyl chloride 275 amp-hours; 20 years calculated life
under normal working conditions. The battery can be easily replaced in the
field.
FCC Compliance Part 15, Subpart C: a user license is not required (FCC ID G8JVRT01)
RF Transmitter 414.5 MHz, +0.5, -1.0 MHz; 4,000 uV/m @ 3m.
RF Receiver 451.35 MHz; -70 dBm sensitivity
Materials
• Housing: high-impact plastic, weatherproof, UV protected for outdoor
installation.
• Circuit-card assembly: conformal-coated
• Corrosion–protected external-housing screws
Operating Temperature
Range
-22°F to 158°F (-30°C to 70°C)
Storage Temperature
Range
-40 °F to 185°F (-40°C to 85°C)
Humidity 5-95% Relative (non-condensing)
Weight 6 oz. Excluding index and index cover.
Serial Numbers Up to eight digits, starting at 6500000