PHYWE 13621.00 Operating Instructions Manual

Electrometer amplifier

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PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10
D-37079 Göttingen
Phone
+49 (0) 551 604-0
Fax
+49 (0) 551 604-107
E-mail
info@phywe.de
Internet
www.phywe.com
Operating instructions
The unit complies with
the corresponding EC
guidelines.
CONTENTS
1

SAFETY PRECAUTIONS

2

PURPOSE AND DESCRIPTION

3
4
5
6
7
8
SETS OF EQUIPMENT FOR EXPERIMENTS
WITH THE ELECTROMETER AMPLIFIER:
9
1
SAFETY PRECAUTIONS
Carefully read these operating instructions completely
before operating this instrument. This is necessary to
www.phywe.com, © All rights reserved
Electrometer Amplifier
8
2
1
Fig. 1: Front view of the Electrometer Amplifier 13621.00.
avoid damage to it, as well as for user-safety.
Only use the instrument in dry rooms in which there is no
risk of explosion.
Only use the instrument for the purpose for which it was
designed.
2
PURPOSE AND DESCRIPTION
Charges that have resulted from static electricity can be
determined by transferring the charge to a capacitor of known
capacitance and measuring the electrical potential of this. It is
difficult to measure this potential with customary measuring
instruments, as a current flows through the measuring
instrument and this leads to decay of the applied charge. The
smaller the internal resistance of the measuring instrument,
the quicker the potential is reduced. Customary measuring
instruments have an internal resistance of about 10 M Ohms.
This electrometer amplifier has it its disposal a voltage input
with a very high internal resistance (> 10
so be used to measure such charges.
In general, the electrometer amplifier can be implemented to
measure so-called "soft" voltages, i.e. of voltages that break
down with small flows.
For example:
- Potential across a charged capacitor
- Voltage of a weakly lit solar cell
- Voltages that decay at a high ohmic resistance
The electrometer amplifier described here can so be used to
demonstrate
many
physical
Individual measuring procedures are described in section 7.
13621.00
5
7
4
6
3
9
13
Ohms), and can
effects
in
electrostatics.
1
13621.00 / 3209

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Summary of Contents for PHYWE 13621.00

  • Page 1 Operating instructions The unit complies with the corresponding EC guidelines. Fig. 1: Front view of the Electrometer Amplifier 13621.00. CONTENTS avoid damage to it, as well as for user-safety. Only use the instrument in dry rooms in which there is no •...
  • Page 2 The Special voltages and fixed frequencies on request. following measures reduce or do away with disturbances: Avoid fitted carpets; ensure potential equalization; carry out experiments on a conductive, earthed surface, use screened www.phywe.com, © All rights reserved 13621.00 / 3209...
  • Page 3 Plug with 3 sockets, red, pack of 2 07206.01 ; with Q: Charge [Cb]; C: Capacity and U: Voltage [V] ⋅     Connecting plug, 4 mm/19 mm 39170.00 (for short-circuiting) www.phywe.com, © All rights reserved 13621.00 / 3209...
  • Page 4 Cable with 4 mm bunch plug 7.2.2 Measurement of direct voltages of more than 10 V 7.2.2.1 High ohmic measurements Schematical experimental set-up: 7.2.2.2 Quasi-static measurement ±Uo Schematical experimental set-up: Power 12V~ ±Uo Power Offset 12V~ Offset www.phywe.com, © All rights reserved 13621.00 / 3209...
  • Page 5 We guarantee the instrument supplied by us for a period of 24 months within the EU, or for 12 months outside of the EU. Excepted from the guarantee are damages that result from www.phywe.com, © All rights reserved 13621.00 / 3209...
  • Page 6 Should you no longer require this product, do not dispose of it with the household refuse. Please return it to the address below for proper waste disposal PHYWE Systeme GmbH & Co. KG Abteilung Kundendienst (Customer Service) Robert-Bosch-Breite 10 D-37079 Göttingen...

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