Manual

ManualsBrandsAmerican Magnetics ManualsEquipment160 Liquid Helium Level Superconducting Dipstick

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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Summary of content (4 pages)

PAGE 1
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.
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NOTE: If there is any shipping damage save all packaging material and contact the shipper's representative to file a damage claim. Do not return any damaged material to AMI unless prior authorization has been received (see Section VIII). 3. Plug the connector at the end of the sensor cable into the mating receptacle located at the end of the electronics enclosure. IV. OPERATION 1. Place the toggle switch on the electronics enclosure to the GAS DETECT position.
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binder clip. Very slowly raise the dipstick until the audible signal is heard and the red ALARM LED illuminates indicating the sensor is slightly above the surface of the liquid helium. Mark the position with a second binder clip. NOTE: The dipstick can be raised and lowered much faster than the response time of the instrument.
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available from AMI. Replacement sensors are provided with cable and connector ready to plug into the electronics enclosure. Calibration or adjustment of the electronics is not required. VI. TROUBLESHOOTING 1. No level indication: a. Ensure there is liquid helium in the container being measured. b. Ensure the toggle switch is placed in the proper position. c. Ensure the battery has sufficient power by observing the green POWER LED is illuminated. d.