Fluke Thermometer 80K 40 User Manual

Maintenance  
®
Performance Test  
Verify the probe accuracy by measuring a 25 kV dc ±0.25%  
voltage source. When used with a compatible dc voltmeter, the  
probe should measure the source with ±1% accuracy. No  
calibration adjustments are provided.  
80K-40  
High Voltage Probe  
Cleaning  
Instruction Sheet  
Use a soft cloth dampened in distilled water to clean the 80K-40.  
Never use solvents or abrasive cleaners. Make sure the 80K-40 is  
dry before reuse.  
Introduction  
The Model 80K-40 is a high voltage accessory probe designed to  
extend the voltage measuring capability of an ac/dc voltmeter up  
to 40,000 volts Overvoltage Category I. This means the probe can  
only be used to make measurements on energy limited circuits  
within equipment. Examples include high voltage within  
televisions or photo copy machines. DO NOT use this probe to  
measure high voltages on power distribution systems. The probe  
is a precision 1000:1 voltage divider formed by two matched  
resistors. The unusually high input impedance offered by these  
resistors minimizes circuit loading and thereby, optimizes  
measurement accuracy. A special plastic body houses the divider  
and provides the user with isolation and protection from the  
voltage being measured.  
LIMITED WARRANTY & LIMITATION OF LIABILITY  
Each Fluke product is warranted to be free from defects in material and  
workmanship under normal use and service. The warranty period is one  
year and begins on the date of shipment. Parts, product repairs and  
services are warranted for 90 days. This warranty extends only to the  
original buyer or end-user customer of a Fluke authorized reseller, and  
does not apply to fuses, disposable batteries or to any product which, in  
Fluke’s opinion, has been misused, altered, neglected or damaged by  
accident or abnormal conditions of operation or handling. Fluke warrants  
that software will operate substantially in accordance with its functional  
specifications for 90 days and that it has been properly recorded on non-  
defective media. Fluke does not warrant that software will be error free or  
operate without interruption.  
Fluke authorized resellers shall extend this warranty on new and unused  
products to end-user customers only but have no authority to extend a  
greater or different warranty on behalf of Fluke. Warranty support is  
available if product is purchased through a Fluke authorized sales outlet  
or Buyer has paid the applicable international price. Fluke reserves the  
right to invoice Buyer for importation costs of repair/replacement parts  
when product purchased in one country is submitted for repair in another  
country.  
Specifications  
The 80K-40 will achieve rated accuracy when used with a  
voltmeter (ac or dc) having an input impedance of 10 M±1.0%.*  
Specifications for the probe are as follows:  
†Voltage Range: 1 kV to 40 kV dc or peak ac, 28 kV rms ac  
Input Resistance: 1000 MΩ  
Division Ratio: 1000: 1 (1000X attenuator)  
Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the  
purchase price, free of charge repair, or replacement of a defective  
product which is returned to a Fluke authorized service center within the  
warranty period.  
Accuracy DC:  
20 kV to 35 kV: ±1% at 20°C to 30°C; add 1% at 10°C  
<20°C and >30°C to 45°C. (For total measurement accuracy  
add accuracy specification of voltmeter being used.)  
To obtain warranty service, contact your nearest Fluke authorized service  
center or send the product, with a description of the difficulty, postage and  
insurance prepaid (FOB Destination), to the nearest Fluke authorized  
service center. Fluke assumes no risk for damage in transit. Following  
warranty repair, the product will be returned to Buyer, transportation  
prepaid (FOB Destination). If Fluke determines that the failure was  
caused by misuse, alteration, accident or abnormal condition of operation  
or handling, Fluke will provide an estimate of repair costs and obtain  
authorization before commencing the work. Following repair, the product  
will be returned to the Buyer transportation prepaid and the Buyer will be  
billed for the repair and return transportation charges (FOB Shipping  
Point).  
0 kV to <20 kV and >35 kV to 40 kV: ±2%.  
Accuracy AC: 60 Hz, ±5%.  
Safety: Meets IEC 1010-2-031:1993, Type B, 40 kV dc or, peak  
ac, 28 kV rms ac, Overvoltage Category I (voltages derived from  
limited energy transformer).  
* The input impedance of Autoranging Fluke handheld digital  
multimeters varies as a function of range. The only range that  
deviates significantly from 10 Mis the 3V (Models 21, 23, 25,  
27, 70, 73, 75, 77) or 4V (Models 10, 11, 12, 29, 79, 83, 85, 86,  
87, 88) range where the impedance is 11.11 M. To enhance the  
measurement accuracy when using this range, apply a correction  
factor of 0.99, i.e. multiply the displayed reading by .99.  
THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND  
IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,  
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF  
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,  
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,  
INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF  
WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY  
OTHER THEORY.  
† This probe is intended for low energy applications such as CRT  
and similar circuits. Above 2000 meters altitude, and up to 5000  
meters, derate linearly the working voltage from 40 kV peak to 28  
kV peak, and derate linearly the transient overvoltage from 80 kV  
peak to 57 kV peak. Transient overvoltage refers to micro-second  
duration impulses caused by lightning or load switching. See  
International Electrotechnical Commission Publication 664-1980,  
Clause 3.9 Table II, and Appendix A.  
Since some countries or states do not allow limitation of the term of an  
implied warranty, or exclusion or limitation of incidental or consequential  
damages, the limitations and exclusions of this warranty may not apply to  
every buyer. If any provision of this Warranty is held invalid or  
unenforceable by a court of competent jurisdiction, such holding will not  
affect the validity or enforceability of any other provision.  
Fluke Corporation  
P.O. Box 9090  
Everett, WA 98206-9090  
U.S.A.  
Fluke Europe B.V.  
P.O. Box 1186  
Measurement Considerations  
Before attempting to use the 80K-40, the following paragraphs  
should be read and understood. Particular attention should be  
given to Operator Safety.  
5602 BD Eindhoven  
The Netherlands  
PN 481978  
January 1978, Rev.9, 3/97  
© 1978, 1996, 1997 Fluke Corporation, All rights reserved. Printed in U.S.A.  
5/94  
All product names are trademarks of their respective companies.  
 

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