Varec 2500, Installation And Operation Manual

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Introduction
Varec, Inc. 5
Check Knob
An operation checker, provided as a standard feature on both the 2500 and 2520 ATG, permits
your technician to check the instrument for correct operation.
Negator Cassette
The negator cassette improves the performance of your mechanical tank gauge by self-aligning
the tape and motor as it provides the constant pullback tension required for the float to follow
the liquid level. The cassette increases reliability and reduces maintenance by protecting
internal moving parts from pipe debris that could cause stretching or corrosion. It also allows
for safer, easier, and quicker service because there is no tape to pull out or negator hubs to
unwind in your hands.
Float Crank
The float crank allows your operators to manually raise and lower the float. This can be useful
during turbulent mixing conditions so that the float or tape is not damaged.