Geräte Informationen:

Keithley 515 Sonstiges
Hersteller:
Keithley
Modell: 515
Datum: 1967
Kategorie: Messgeräte
Gruppe: Sonstiges
Beschreibung: Megohm Bridge
Informationen:
                                    The model 515 Megohm Bridge is a Wheatstone Bridge for
measuring resistors from 10⁵ ohms to 10⁻¹⁵ ohms with
accuracies from 0.05% to 1.0%. It is complete, with an
electrometer null detector, shielded enclosure for the
unknown, and a bridge voltage supply.
A unique system of switches is provided to allow corrections
to be made for the slow changes in resistance of the
standard high megohm resistors. This enables all values of
resistance to be read with rated accuracy, directly from the
bridge dials.
Bridge voltages in one volt steps up to 10 volts are
available from the internal supply. With external supplies,
voltages as high as 1,000 volts can be used.
A connector is provided so that unknown resistors can be
measured outside the instrument as well as in the built-in
shielded enclosure.

Folgende Anleitungen sind hier verfügbar:

Dokumenttyp: Service- und Bedienungsanleitung Keithley-3956-Manual-Page-1-Picture
Seitenanzahl: 46
Dateigröße: 2.03 Mbytes (2130136 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer:
Datum: 1967
Qualität: Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
Upload Datum:
MD5: 356195009ba7e0413669651cc6c9fbbb
Downloads: 293 seit dem 13 Januar 2013
Informationen:
Keithley-3956-Manual-Page-1-Picture


Dokumenttyp: Service- und Bedienungsanleitung Keithley-11280-Manual-Page-1-Picture
Seitenanzahl: 46
Dateigröße: 2.04 Mbytes (2141300 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer:
Datum: 01 Januar 1962
Qualität: Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
Upload Datum:
MD5: a8eb2a5fe2f3f6b9a7908a7608248c9c
Downloads: 32 seit dem 23 August 2018
Informationen:
I.	INTRODUCTION ... 1-1

II.	SPECIFICATIONS ... II-1

III.	OPERATION ... III-l

A.	Outline of Procedure  ... 	III-l

B.	Description of Controls

and Terminals  ... 	III-2

C.	Operation Steps ... III-3

D.	Standardization ... III-4

E.	Connecting the Unknown

Resistor ... III-4

F.	External Bridge Voltage

Supply ... III-8
G.	Voltage Across Unknown and

Standard Resistors.  ...  III-8

H.	Accuracy Considerations. . . III-9
1.	Null Detector

Sensitivity  ...  III-9

2.	Null Detector Zero

Drift ... 111-10

3.	Resolution of the

Readout  ...  111-10

4.	Accuracy of the Read-

out and Standard

Resistors  ...  . 111-10
5.	Temperature and Voltage

Coefficients in the

Bridge Resistors. . . . III-I2

6.	Leakage Resistance

Across the Unknown, . . 111-12

7.	Errors Caused by Guard

to Ground Resistance, . Ill-12
Section	Page

8.	Time Constants - Slow

Response  ... 111-13

9.	Transients Caused by

Push-to-Read Switch. ,	111-14 

10. Verification of the

Accuracy  ... 111-14

IV.	CIRCUIT DESCRIPTION ... IV-1

A.	Power Supply ... IV-1

B.	Null Detector ... IV-1

C.	Bridge Circuitry ... IV-3

D.	Overvoltage Protection. . .	IV-4

V.	MAINTENANCE ... V-l

6.	REPLACEABLE PARTS  ... 6-1

6-1. Replaceable Parts List. .	6-1

6-2. How to Order Parts, . . .	

6-1 model 515 Replaceable

Parts List ... 6-2

model 515 Schematic

Diagram 14522D  ... 6-10
Keithley-11280-Manual-Page-1-Picture


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