Welcome to

POTENTIOMETRIC METERS

SUBCOURSE  MM0455
EDITION 7

United States Army Combined Arms Support Command
Fort Lee, VA 23801-1809

 

Introduction
 
Overview This is an overview of POTENTIOMETRIC METERS, MM0455.
 
Proponent This subcourse is issued by the--

U.S. Army Institute for Professional Development (AIPD)
U.S. Army Training Support Center
Newport News, Virginia  23628-0001

 
Purpose Potentiometric meters will be very important to you as a calibration specialist. This course is designed to teach the knowledge necessary to perform tasks related to the calibration, maintenance, and repair of potentiometric meters. Information is provided on several tasks which are performed in the Army Calibration Laboratory and the Army TMDE Support Team. The subcourse is presented in five lessons, each lesson corresponding to a terminal objective as indicated below.
 
Target
Audience		 Any eligible person may enroll in the subcourse.
 
Requirements To receive credit for course or subcourse completion, you must--
  • Have an Army Correspondence Course Program (ACCP) USER-ID and PASSWORD.
  • Be formally enrolled in this course/subcourse through the ACCP.
  • Earn a passing score on the subcourse examination.

NOTE: To access the examination and any referenced "restricted" materials through the Reimer Digital Library (RDL), you must have an RDL USER-ID and PASSWORD.
 
Contents

TABLE OF CONTENTS

Lesson 1: POTENTIOMETRIC METER PRINCIPLES 

Learning Event 1: Describe the Potentiometer and Its Applications

Learning Event 2: Describe Potentiometer Development

Learning Event 3: Describe the Slide Wire Potentiometer

Learning Event 4: Describe the Two-Range Potentiometer

Learning Event 5: Describe the Volt Box

Learning Event 6: Describe Care and Precautions When Using the Potentiometers

Practice Exercise

Lesson 2: THE DC POTENTIOMETER SYSTEM

Learning Event 1: Describe the Model 9931 DC Comparator Potentiometer

Learning Event 2: Describe the Model 9771 Constant Current Source (CCS)

Learning Event 3: Describe the Model 9460A Nanovolt Amplifier

Learning Event 4: Describe the Model 9461A Galvanometer

Learning Event 5: Describe the Model 9154B Standard Cell Enclosure

Practice Exercise

Lesson 3: PRECISION VOLTAGE MEASUREMENT OF THE STANDARD CELL

Learning Event 1: Describe the Construction and Maintenance of the Standard Cell

Learning Event 2: Describe the Standard Cell Opposition Measurement Technique

Learning Event 3: Describe the US Army Volt Program

Learning Event 4: Describe Measurements for Calibration of Standard Cell Enclosures at Army Calibration Facilities

Practice Exercise

Lesson 4: NULL DETECTOR 845AR

Learning Event 1: Describe the 845AR Null Detector

Learning Event 2: Describe Operation of the 845AR Null Detector

Learning Event 3: Describe Theory of Operation of the 845AR Null Detector

Learning Event 4: Describe Troubleshooting the 845AR Null Detector

Practice Exercise

Lesson 5: DIFFERENTIAL VOLTMETER MODEL 887AB/AN

Learning Event 1: Describe the Differential Voltmeter

Learning Event 2: Describe the 887AB/AN Differential Voltmeter

Learning Event 3: Describe Operation of the 887AB/AN Differential Voltmeter

Learning Event 4: Describe Theory of Operation of the 887AB/AN Differential Voltmeter

Practice Exercise

MM0455 Edition 7 Examination

 

 
 
Informal Access Feel free to preview the subcourse to see if it meets your needs, to study it without committing to formal enrollment, or use it as an on-line desk reference.
 

Enrollment
 
Enrollment
Eligibility		 The Army Correspondence Course Program subcourses are available to U.S. Active and Reserve military officers, warrant officers, and enlisted personnel; Reserve Officers' Training Corps, National Guard Officer Candidate School, West Point cadets, and authorized federal civilian employees.

Military personnel must have enough time remaining in service to complete the course/subcourse(s) in which they request enrollment.

Note:  For detailed eligibility requirements see the course listing found on the AIPD LOGON/REGISTER web site.
 
Enrollment
Notes		 Enrollment is electronic. To enroll, click on the ENROLL button below to take you to the ACCP LOGON screen. [NOTE: The following instructions apply to the ACCP web site.]
  • If you are not already registered with the ACCP, you will need to do so prior to enrolling for this subcourse. Click on the REGISTER button and follow the on-screen instructions. [NOTE: You will be required to create your own USER-ID and PASSWORD. These will allow you to enroll for courses/subcourses, access and update portions of your current personal demographic information, view history records, and take on-line examinations for subcourses in which you are enrolled.]
  • If you are a registered ACCP participant, enter your USER-ID and PASSWORD in the spaces provided and click on the LOGON button. Follow on-screen instruction for enrolling in a course/subcourse.

When filling in the subcourse number, enter it exactly as follows:  MM0455.

After submitting your application, you will receive verification of your enrollment by e-mail, if available, or first class mail. [NOTE: US military students who do not have an e-mail address can obtain one by going to http://www.us.army.mil.]

IMPORTANT:  You will not be able to access the examination for this subcourse until you have received notification that your enrollment application has been accepted. Until that time, you may informally access the subcourse materials and begin your studies. To do so, follow the link to the RDL, scroll down the list of courses/subcourses, and activate the link to this course/subcourse.

 

Taking the Subcourse On-Line
 
Taking the
subcourse

You do not have to wait for enrollment verification before beginning. You can start immediately. Everything you need to complete the subcourse is provided on-line. You will need no additional materials, nor will any be sent to you. View and study all materials (including practical exercises), and take the final examination.

REMINDER:  You must have received ACCP subcourse enrollment verification by e-mail before taking the examination.

 
Taking
the exam

You must have a valid Reimer Digital Library (RDL) USER-ID and PASSWORD to access the examination. If you do not, go to the RDL Registration Page, provide the requested information, and "Register." You will receive e-mail notification of your USER-ID and a "temporary" PASSWORD. You will then need to reaccess the RDL Registration Page and change the "temporary" PASSWORD to one of your own creation. Guidance is provided on how to construct your PASSWORD.

REMINDER:  You must have received ACCP subcourse enrollment verification by e-mail before taking the examination.

Read the examination administrative instructions very carefully prior to beginning the examination.

Once you complete the examination and "submit" your responses, you will receive immediate feedback of your score. If you obtained a passing score, you will also receive subcourse text references for missed questions. Your final official grade (Completion Notice) will be provided by e-mail, if available, or first class mail. If you did not obtain a passing score, you may retake the examination after a time lapse of 24-hours from computer processing of your initial attempt.
 

Assistance

 
Points of
Contact		 If you have any questions about the subcourse, call or e-mail one of these points of contact:
  • For questions about subcourse content, contact:
    ATCL-AO
    Training Directorate
    US Army Combined Arms Support Command
    401 1st Street
    Fort Lee, VA 23801-1511
    http://www.cascom.army.mil/ordnance/

  • For questions about subcourse administration, contact:

    Section A
    DSN: 826-2127/3322
    COM: (757) 878-2127/3322
    E-MAIL: sectiona@atsc.army.mil

 

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