GORMAN-RUPP VG3B3-B, Installation, Operation And Maintenance Manual

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IV. Product Overview:
A. Level Transmitters
Acculevel
The Acculevel from Keller is a high accuracy submersible level transmitter. Incorporating all of
The features of the Levelgage, the Acculevel has additional features that provide enhanced functionality,
including dual outputs; i.e., one analog (4…20mA, 0…5 VDC, 0…10VDC) and one digital (RS485). The
RS485 interface provides level and temperature information. Also, it allows the user to rescale the analog
output from 10…110% of the basic range. Additionally, the Acculevel is capable of greater accuracy than
the Levelgage, with a standard accuracy of 0.25% FS TEB and an optional 0.1%. The Acculevel can be
manufactured in 316L stainless steel or titanium for increased resistance to corrosion, notably from seawater.
Levelgage
The Keller Levelgage is a general purpose submersible level transmitter available in 1% and 0.5%
FS TEB accuracy. Constructed from 316L stainless steel, it is ideally suited for most fresh water
monitoring applications. It is available in custom ranges from 0…3 ftWC to 0…900ftWC. Cable lengths are
cut to user specifications. The Levelgage is also available in various output configurations, including
4…20mA, 0…5 VDC, and 0…10VDC.
LevelRat
The Keller LevelRat is specifically designed to provide accurate level indication in grease-laden
environments commonly found in lift stations serving commercial concerns. The LevelRat design takes a
step away from the large and bulky protection cage designs by utilizing a flush Kynar™ diaphragm. Kynar
offers the non-stick properties of Teflon and provides added resistance to damage from debris.
The LevelRat is offered with various analog outputs (4…20mA, 0…5VDC, or 0…10VDC) and in level ranges
from 0…5ftWC to 0…100ftWC.
Microlevel
The Microlevel combines the capability of the Acculevel with a class leading 0.63” (16mm) outside
diameter. The Microlevel is available in full scale ranges from 0…3 ftWC through 0…900 ftWC and
is available with standard accuracy 0.25% FS TEB and 0.1% FS TEB optional. Like the Acculevel, it also provides
both 4…20mA analog and RS485 Digital output. The RS485 interface provides level and temperature
information. It also allows the user to rescale the analog output from 10…110% of the basic range.
Nanolevel
The Nanolevel is uniquely designed for high accuracy measurement of very low pressure ranges.
The Nanolevel is available in full scale ranges from 0…4 inWC through 0…10 ftWC and
is available with standard accuracy 0.25% FS TEB and 0.1% FS TEB optional. Like the Acculevel, it also provides
both 4…20mA analog and RS485 Digital output. The RS485 interface provides level and temperature
information. It also allows the user to rescale the analog output from 10…110% of the basic range.
Keller America Inc User’s Guide Rev. 10/11
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