Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Prostat CVM-780
Summary of Contents for Prostat CVM-780
- Page 1 CONTACT VOLTMETER CVM-780 User Manual...
-
Page 3: Table Of Contents
General Specifi ca ons Copyright © 2011 by Prostat® Corpora on. All rights reserved. Printed in the United States of America. No part of this manual may be used or reproduced in any manner whatsoever without wri en permission. For informa on contact Prostat Corpora on, 1072 Tower Lane, Bensenville, IL 60106 USA Prostat is the registered trademark of Prostat®... -
Page 4: Introduc On
Being a true electrosta c voltmeter, not a fi eld meter means that the CVM-780 reads real voltage, without confusing it with electrosta c fi eld strength, which can be dis nctly diff erent. The CVM-780 uses a unique ac ve probe design which is fully guarded and shielded for minimal interference with the surrounding E fi... - Page 5 The analog output jack provides an output of 0.1 millivolt for each 1.0 volt measured by the CVM-780. The output is independent of the meter indica on to maximize response me. The output is compa ble with the Prostat® PGA-710 or PGA-710B Autoanalysis System™.
-
Page 6: Theory Of Opera On
C. At the moment of contact a small transfer of electrons occurs from the conductor to the CVM-780 p that completes the measurement. The probe p voltage will be well within 1. - Page 7 NOTE: DO NOT OPEN the instrument or probe assembly. There are no customer serviceable parts or ad- justments inside the instrument package or probe assembly. The CVM-780 has been in test and use for over 2 years prior to manufacture for general ESD applica ons. Rev. D / January 2015...
-
Page 8: Receiving & Instrument Setup
It has proven itself reliable and quite stable. The customer should have few if any problems with this unique instrument. If a er examining this manual and you have ques ons, contact Prostat or its Autho- rized Resellers for assistance. See the “Warranty” sec on later in this document for detailed informa on regarding further coverage and support. - Page 9 CVM-780 Contact Voltmeter F. Accessories box containing 1. 2 Metal probe ps, approximately 0.9 and 0.4 inches 2. 2 Ceramic probe ps, approximately 0.9 and 0.4 inches 3. Tip installa on and removal tool G. Q007B ESD Grounding Cube for connec ng to equipment ground in North American facili es H.
- Page 10 Manual Zero Ground Plate Front Panel Side Panel J. Before using the CVM-780 fully charge the metal hydride ba eries using supplied universal ba ery charger. 1. Plug charger into a standard AC outlet. Use appropriate adapter if necessary. 2. Plug charger’s DC output connector fi rmly...
- Page 11 CVM-780 Contact Voltmeter 3. Ceramic ps are used for making direct contact with ESD sensi ve parts and assemblies during precision measurements NOTE: CERAMIC TIPS ARE FRAGILE. They are bri le, and should be handled carefully to avoid damage. Tips are not covered by warranty and are costly to replace.
- Page 12 Connect the free end of the ground wire to ground using the supplied grounding block or alligator clip NOTE: the CVM-780 must be connected to an approved ground for proper opera on and accurate measurements CAUTION: Avoid tangling or catching the ground wire on foreign OR MOVING objects during use CAUTION: The operator is grounded during normal opera ons while holding the probe assembly.
-
Page 13: Making Electrosta C Voltage Measurements
VI. Making Electrosta c Voltage Measurements The CVM-780 is designed to measure electrosta c voltage on conductors without discharging the object in ques on. When using metal probe ps, a slight voltage diff eren al during metal to metal contact will cause low level ESD and RFI genera on. -
Page 14: Performance Characteris Cs & Considera Ons
“ground” is the instrument’s zero reference for its measurement circuit. The CVM-780 probe is “ac ve”. Its internal components assess p voltage as it approaches a charged conductor. It communicates with the instrument package to increase, and provide similar p voltage upon contact with the conductor being measured. - Page 15 10 V ≤ ±1 V This procedure confi rms the ability of the CVM-780 to measure DC voltage accurately, as would be ex- pected of any good quality DC voltmeter. Variables within the error range are usually a ributed to manual zeroing of the instrument to ground.
- Page 16 Using a reference capacitor minimizes these measurement variables. Thus, in real world the accuracy of prac cal CVM-780 measurements of a conduc ve object are based on: • The object’s capacitance and charge in combina on with •...
-
Page 17: Capacitance & Accuracy
CVM-780 Contact Voltmeter Understanding these variables and the process condi ons heightens the value of the operator’s measure- ments. Metal Tips Metal ps are far more robust than ceramic materials and less prone to damage. These ps are provided for general audit and analysis measurements of equipment, chairs, carts, material handling items, tools, fi... -
Page 18: Measuring Insulators
Repeat the measurement while measuring the approximate voltage of the CPM fl oa ng plate with the CVM-780. You will see a simi- lar shi in voltage as someone else’s hand approaches, and then leaves the vicinity of CPM’s surface. -
Page 19: Instrument Maintenance
CVM-780 Contact Voltmeter 1. If the PGA-710 or PGA-710B and CVM-780 zero se ng are the same measurement recordings can be made 2. If they are not the same, stop the Preview and proceed as follows. H. Adjust the CVM-780 carefully to display 000 on its LED. -
Page 20: Warranty
Limit of Liability – in no event will Prostat or any seller be responsible or liable for special, incidental, or consequen al losses or damages, under any legal theory including but not limited to contract, negligence, or strict liability. -
Page 21: General Specifi Ca Ons
Input Impedance: ≥10 ohm in parallel with <1pF Capacitance Monitor Output: Scale Factor: 10,000:1; 100uV/V (Compa ble with Prostat® PGA-710 or PGA- 710B Autoanalysis System™) Recording Devia on: Typically < ±10 volts at ± 500 Volts Measurement Tolerances: When measuring DC voltage reference 500 V ≤±5 V... - Page 22 CVM-780 Contact Voltmeter NOTES Rev. D / January 2015...
- Page 23 CVM-780 Contact Voltmeter NOTES Rev. D / January 2015...
- Page 24 CVM-780 Contact Voltmeter NOTES Rev. D / January 2015...
- Page 25 CVM-780 Contact Voltmeter NOTES Rev. D / January 2015...
- Page 26 CVM-780 Contact Voltmeter NOTES Rev. D / January 2015...
- Page 28 Specifi ca ons are subject to change without no ce. All Prostat trademarks and trade names are the property of Prostat Corpora on. All other trademarks and trade names are the property of their respec ve companies. P R O F E S S I O N A L...
Need help?
Do you have a question about the CVM-780 and is the answer not in the manual?
Questions and answers