Table Of Contents - Keithley 630 Instruction Manual

MODEL 630 POTENTIOMETRIC ELECTROMETER
CONTENTS
TABLE OF CONTENTS
section
Page
1.
2.
3.
,4.
GENERAL DESCRIPTION . . . . . .
1-L.
Description . . . . . .
1-2.
Operating Modes . . . .
1-3.
Applications. . . . . .
l-4.
Specifications. . . . .
1-5.
Accessories . . . . . .
1-6. Equipment Shipped . . .
OPERATION . . . . . . . . . . .
2-l.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-9.
Front Panel Controls
and Terminals . . . .
Rear Controls and
Terminals . . . . . . .
Preliminary Procedures. .
Operating Procedures. . ,
Recorder Output . . . . ,
Effective Input Resis-
tance . . . . . . . . .
Null Sensitivity and
Source Resistance . . .
AC Effects on Measurement
Current Measurements. . .
CIRCUIT DESCRIPTION . . . . . .
3-1.
General . . . . . . . .
3-2.
Reference Voltage Supply.
3-3.
Kelvin-Varley Divider . .
3-4.
Null Detector . .
3-5.
Oscillator. . . . .
3-6.
Guarding . . . . .
SERVICING . . , . . .
4-l. General . . . . . .
4-2.
Servicing Schedule.
4-3.
Parts Replacement .
4-4.
Troubleshooting . .
4-5.
Adjusting Grid Bias
Cathode Follower.
. . . . .
14
. . . . .
15
. . . . .
16
. . . . .
17
. . . . .
17
. . . . .
17
. . . . .
17
. . . . .
17
of
. . . . .
19
4-b.
Zener Diode Replacement . . . 20
4-7.
Meter Adjustment . . . . . . 20
4-a.
Adjusting Quadrature Control. 20
. . 1
. . 1
. . 1
. .
2
.
.
2
.
.
3
.
.
3
.
.
5
. . 5
6.
ACCESSORIES . . . . . . . . . , . 35
. . 5
. . 6
. . 6
. . 9
6-1.
Model 6301 Guarded Probe. . 35
6-2.
Rack Mounting . . . . . . . 35
6-3.
Placing in Rack . . . . , . 36
6-4.
Model 6013 pH Electrode
Adapter . , . . . . . . . 37
. . 9
. . 11
. . 11
. . 11
. . 13
. . 13
. . 13
. . 14
7.
REPLACEABLE PARTS , . . . . . , . 39
7-l. Replaceable Parts List. . . 39
7-2.
How to Order Parts. . . . . 39
Model 630 Replaceable
Parts List. . . . . . . . 40
Model 6302 Replaceable
Parts List. . . . . . . 48
Model 630 Schematic Diagram
1826lE . . . . . . . . . 51
Green Repair and
Calibration Form . . . . . 53
Section Page
5.
CALIBRATION . . . . . . . ., . . 21
5-l.
General . . . . . . . . . . 21
5-2.
Calibration Schedule. . . . 22
5-3.
Kelvin-Varley Divider . . .
Verification. . , . . . . 22
5-4.
Input Divider Calibration . 23
5-S. Range Calibration , . . . . 23
5-6.
Reference Voltage Supply
Stability Test , . . . . 26
5-7.
Oscillator Adjustment . . .
27
*Change Notice . . . . . . . . . . . Last
Page
*Yellow Change Notice sheet is included
only for instrument modifications affect-
ing the Instruction Manual.
0 168il