American Magnetics 160 Liquid Helium Level Superconducting Dipstick - Manual

INSTALLATION, OPERATION AND MAINTENANCE
INSTRUCTIONS FOR THE AMI
MODEL 160
LIQUID HELIUM LEVEL SUPERCONDUCTING DIPSTICK
I. INTRODUCTION
The American Magnetics, Inc. (AMI) Model 160 Liquid Helium Level Superconducting
Dipstick is designed for measuring the level of liquid helium in storage dewars that are
accessible from the top. The dipstick is a cost effective, low loss, accurate alternative to
flutter tubes and carbon resistor liquid helium level measuring devices.
Each Model 160 consists of a superconducting point sensor mounted on an extension tube
and a detachable electronics enclosure.
II. SPECIFICATIONS
Sensor Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 Inch
Extension Tube Diameter . . . . . . . . . . . . . . . . . . . . . . 0.25 Inch
Sensor Active Region . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 Inch
Sensor and Extension Tube Overall Length . . . . 72 Inches
(Custom Lengths may be provided at the customers request.)
Cable Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.5 Feet
Electronics Enclosure Dimensions . . . . . . . . . . . . . . 2-3/8" W x 4-1/4"L x 1-1/8" H
Total Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Ounces
Accuracy
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.1 Inch
Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.1 Inch
III. INSTALLATION
1. Carefully remove the sensor from the shipping tube and the electronics enclosure from its
packaging material.
NOTE: Save the PVC shipping tube as a handy storage
container and to protect your dipstick from damage when not in
use.
2. Inspect the sensor and electronics enclosure for any physical damage that may have
occurred during shipment.
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Rev. 4/28/2003