EAST GERMAN WORKING GROUP ON ELECTRICAL INSTRUMENTS AND STANDARDS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A002800710010-5
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 4
• Document Creation Date: December 27, 2016
• Document Release Date: June 5, 2013
• Sequence Number: 10
• Publication Date: November 23, 1953
• Content Type: REPORT

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CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
50X1-HUM
This Document contains information affecting the Na-
tional Defense of the United States, within the mean-
ing of Title 18, Sections 793 and 794, of the U.S. Code, as
amended. Its transmission or revelation of its contents
to or receipt by an unauthorized person is prohibited
by law. The reproduction of this form is prohibited.
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SECURITY INFORMATION
COUNTRY East Germany
REPORT
50X1-HUM
SUBJECT East German Working Group on Electrical
DATE DISTR.
23 November 1953
Measuring Instruments and Standards
NO. OF PAGES
4
DATE OF INFO.
REQUIREMENT
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PLACE ACQUIRED
REFERENCES
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THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
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10 On 11 May 19510 the physics section of the East German Central Office for Resear&
and Technology (ZAFT, Berlin 017, Koepenicker Strasse 80-82) Prof. Dip1.50X1 -HUM
Ing. Josef Stanek. asked Stanek (the head of Scientific Technical Office
No. 4 = EFEM = Development and Production of Electrical Measuring Instruments is
NTB-4 of SAG Kabel) to effect coordination in the field of development of electrical
measuring instruments throughout East Germany.
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2. a. On 29 August 1952 after more than a year
-agreement had been reached in principle
on the development of a standard East German series of panel instruments
(Schalttafelinstrumente). Prof. Stanek stated his ideas on the standard
sizes and measuring ranges of a variety of instruments. These ideas had
been reached after discussion with a number of Mther experts in the fields
concerned. Briefly, his ideas were that standardization on these values
should be reached:
(1) Moving coil meters
Accuracy: the meters must satisfy the demands of accuracy class
1.5, but must be so built that they will also satisfy
the demands of 0.5 (sic).
40/5o mm 0, 50/63 mm 0, 65/83 mm 0, 801100 mm 0,
110/130 mm 0, 168/188 mm 0, 72 x 72 nude, 144 x 144
mm2, 144 x 72 mm2.
Range: for housings of 80/100 mm 0 or smaller: lower current
limit = 50?A, lower voltage limit = 15 mV. For
housings of 110/130 mm 15 and larger, corresponding
values of 400 FA and 40 mV.
Housing:
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(2) Moving magnet instruments
Accuracy: 1.5
Housings: 40/50 mm 0, 50/63 mm 0, 65/83 mm 0.
Range: Lower:
Upper:
(3)
(4)
(5)
(6)
(9)
1 mA and 60 mV
6, 10 or 25 A, according to
600 V.
size.
Rectifying instruments
For measurements in the frequency range of 50-20,000 cps.
Range:
1 - 150 mA.
1 - 600 V.
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Thermo-couple instruments
For measurements in the range 100 kcs - 50 mcs and around 500k.
NO further recommendations.
Electromagnetic instruments (Dreheiseninstrumente)
Accuracy: 1.5
Housings: As for moving coil meters, with the omission of the first
value (40/50 mm 0).
Range: Lower: 100 mA. 10V.
Upper: 100 A. 600V.
Power meters
Accuracy:
Housings:
Range:
Direct reading
1.5, but so built that they can be used for constructing
portable instruments of class 0.5 or 1.0.
110/130 mm 0, 168/188 mm 0, 144 x 144 mm2.
Current path of the measuring apparatus: 0.1 - 6A. For
the voltage path of the measuring apparatus, a current
supply of 10 mA.
frequency meters
No recommendations.
Vibrating reed frequency meters
Housings: 110/130 mm 0, 168/188 mm 0, 144 x 144 mm2, 144 x 72 mm2.
Phase meters and synchronoscopes
Housings: 168/188 mm 0, 144 x 144 mm2.
b. Prof. Stanek further recommended expenditures on:
(1) development of bearings from raw materials available in East Germany.
Hitherto, measuring instruments had had bearings of agate, spinel, and
sapphire; these materials were rarely mined in East Germany, and foreign
currency had to be spent to procure them.
(2) development of magnets from materials available in East Germany.
(3) development of metalized resisters (Schichtwiderataende) to replace wire
resisters in voltmeters.
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(4) development of standard housings.
3. a. A Coordinating Committee for Electrical Measuring Instruments was formed some
time in 1952 and held an important meeting on 1 September 1952 to discuss the
matters raised by Prof. Stanek 29 August 1952 to ZAFT. 50X1-HUM
b. Present at this meeting were:
Dip.-Ing. Georg Chrapek
Ing, Schenke
Prof. Dipl.-Ing. Hoschke
Dr.-Ing. Mau
Dr. Roeseler (
Obering. Pietgch
Dipl.-Ing. Josef Stanek
ZAFT
Ministry of Machine Construction
VEB Geraetewerk Chmmnitz (GC)
Elektro-Apparate-Werk
Treptaw (EAT)
EFEM (NTB-4)
c. The meeting decided that there were only three works in East Germany able to
deal with ZAFTts wishes on the development of a standard series of panel
measuring instruments. They were the Chemnitz plant (GC), the Treptaw plant
(EAT), and EFEM (NTB-4). It was,,therefore, decided to allot development
tasks as follows:
(1) Moving coil meters
Small core magnet instruments
MO
GC
Large ?
EAT
(2)
Moving magnet instruments
0111,
EFEM
(3)
Small rectifying instruments
GC
Large
EAT
(4)
High frequencycurrent transformers
IMO
EFEM
(Chrapek here intervened to say that
the development must provide for
frequencies up to 200 mos).
(5)
Electromagnetic instruments
EFEM
(6)
Power meters
(7)
Vibrating reed frequency meters
-
EAT
(8)
Phase meters and synchronoscopes
(9)
Hearings problems
(10)
Magnet problems
-
EFEM
(11)
Metalized resisters
(12)
Housings
Chrapek said, with reference to point (9), that Dralowidwerk Teltow was also
working in thit 'field, and it seemed pointless to have two places doing the
same work. It must still be decided which place, Teltaw or EFEM, should do
the development work.
L. a. On 4 August 1953, there was a meeting of the East German Working Group on
Electrical Measuring Instruments and Standards, held in EFEM. This group
was part of the East German Working Party for Electrical Measuring and Testing
Engineering. The working group appeared to be the direct descendant of the
1952 Coordinating Committee ami,the minutes of the 1952 meeting (paragraph
3 above) were first read at the present meeting. That there had been no
significant developments for a year appeared to be confirmed by Stanek, chair-
man of the working group, who said that "now, after one year, the State Plan-
ning Commission has just given permission - and so far only by telephone - for
the start of the proposed work" (i.e., the production of a standard series of
panel instruments).
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b. Present at the 1953 meeting were:
Prof. Hoschke
Kaessler
Bleyl
Olbrich -?
Zacher
VEB Geraetewerk Chemnitz
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Elektro-Apparatewerk J.111. Stalin, Treptow
Godehardt Karl-Marx-Werk, MagdeburgBuckau
Belwe VEB FOnkwerk Erfurt
Daehne RFT Anlagenbau Leipzig
Sachade Berlin
Neumann Meesgeraetewerk.Quedlinburg
Groh RFT Leipzig Zentrale Entwicklung
Dr.' Rump
Pietsch
Riemann
Rohrbach
Stanek
Deutsches Amt fuer Mass und Gewicht
(East German Office for Weights and
Standards)
EM
c. Decisions of the working group:
(1) East German instruments will be developed: the various individual plant
types will disappear.
(2) Round housings have only a traditional value. They will give way to
square and rectangular instruments. Users will be convinced of the need
for this change by suitable articles in the technical press.
Housing size 96 x 96 mm will be included in the standard series.
EFEM will investigate the construction of housings from pressed materials.
The following 1954 development tasks of the Geraetewerk Chemnitz are
accepted:
(3)
(4)
(5-)
Skin temperature meter
Panel instrument 96 x 96 mm
Vibration galvanometer
pH compensator
Design of core magnet system for light beep apparatus
Portable voltmeter - special apparatus for Ministry of Post and
Telecommunications
Core magnet measuring instrument
d. The next meeting was to be held on 15 September 1953.
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