Amprobe CR50A Manual de usuario
CR50A
Capacitance,
Resistance Meter
User Manual
ENG FRE SPA
Cx Rx
DISCHARGE CAPACITOR
BEFORE CONNECTING
CR50A
Capacitance,
Resistance Meter
User Manual
6/2018, 6010985 B
©2018 Amprobe.
All rights reserved. Printed in Taiwan
English
Limited Warranty and Limitation of Liability
Your Amprobe product will be free from defects in material and
workmanship for one year from the date of purchase unless
local laws require otherwise. This warranty does not cover
fuses, disposable batteries or damage from accident, neglect,
misuse, alteration, contamination, or abnormal conditions
of operation or handling. Resellers are not authorized to
extend any other warranty on the behalf of Amprobe. To
obtain service during the warranty period, return the product
with proof of purchase to an authorized Amprobe Service
Center or to an Amprobe dealer or distributor. See Repair
Section for details. THIS WARRANTY IS YOUR ONLY REMEDY.
ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR
STATUTORY - INCLUDING IMPLIED WARRANTIES OF FITNESS FOR
A PARTICULAR PURPOSE OR MERCHANTABILITY, ARE HEREBY
DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES
OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some
states or countries do not allow the exclusion or limitation of an
implied warranty or of incidental or consequential damages, this
limitation of liability may not apply to you.
Repair
All Amprobe returned for warranty or non-warranty repair or
for calibration should be accompanied by the following: your
name, company’s name, address, telephone number, and proof
of purchase. Additionally, please include a brief description of
the problem or the service requested and include the test leads
with the meter. Non-warranty repair or replacement charges
should be remitted in the form of a check, a money order, credit
card with expiration date, or a purchase order made payable
to Amprobe.
In-Warranty Repairs and Replacement – All Countries
Please read the warranty statement and check your battery
before requesting repair. During the warranty period,
any defective test tool can be returned to your Amprobe
distributor for an exchange for the same or like product. Please
check the “Where to Buy” section on amprobe.com for a list
of distributors near you. Additionally, in the United States and
Canada, in-warranty repair and replacement units can also be
sent to an Amprobe Service Center (see address below).
Non-warranty Repairs and Replacement
– United States and Canada
Non-warranty repairs in the United States and Canada
should be sent to an Amprobe Service Center. Call
Amprobe or inquire at your point of purchase for current
repair and replacement rates.
USA: Canada:
Amprobe Amprobe
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: 877-AMPROBE (267-7623) Tel: 905-890-7600
Non-Warranty Repairs and Replacement – Europe
European non-warranty units can be replaced by your Beha-
Amprobe distributor for a nominal charge. Please check the
“Where to Buy” section on beha-amprobe.com for a list of
distributors near you.
Beha-Amprobe
Division and reg. trademark of Fluke Corp. (USA)
Germany* United Kingdom
In den Engematten 14 52 Hurricane Way
79286 Glottertal Norwich, Norfolk
Germany NR6 6JB United Kingdom
Phone: +49 (0) 7684 8009 - 0 Phone: +44 (0) 1603 25 6662
beha-amprobe.de beha-amprobe.com
The Netherlands - Headquarters**
Science Park Eindhoven 5110
5692 EC Son
The Netherlands
Phone: +31 (0) 40 267 51 00
beha-amprobe.com
*(Correspondence only – no repair or replacement
available from this address. European customers please
contact your distributor.)
**single contact address in EEA Fluke Europe BV
CR50A Capacitance, Resistance Meter
Cx
200
n
20m
200p
200
ZERO
ADJUST
(20 )
OFF
20
2k
2M
20M
CR50
F
20
k
200
k
2m
200
20
2
20n
2n
CAP.
ZERO
ADJUST
Rx
DISCHARGE CAPACITOR
BEFORE CONNECTING
nF
pF
F
MF
3
2
1
4 6
5
13½ digit LCD; decimal point,
function and unit indicators
2Capacitance Zero Adjustment
3Function/Range/Off Selector
4Capacitance Input Terminals
5Resistance Zero Adjustment
6Input Terminals for resistance,
diode test and continuity
1
CR50A Capacitance, Resistance Meter
Contents
SYMBOLS....................................................................2
WARNINGS AND PRECAUTIONS................................2
OVERLOAD INDICATION ............................................3
PREPARATION FOR USE - UNPACKING.......................3
MEASURING PROCEDURES ........................................3
Resistance Measurement ...........................................4
Diode and Transistor Test...........................................5
Continuity Test............................................................6
Capacitance Measurement ........................................6
SAFETY TEST LEADS...................................................7
SPECIFICATIONS..........................................................8
ELECTRICAL SPECIFICATIONS.....................................10
TROUBLESHOOTING/MAINTENANCE........................12
2
SYMBOLS
Battery
Refer to the manual
Double insulated
Audible tone
Fuse
Complies with EU directives
Conforms to relevant Australian
standards
WARNINGS AND PRECAUTIONS
• Do not exceed the maximum overload limits
per function (see specifications) nor the limits
marked on the instrument itself.
• Inspect instrument, test leads and accessories
before every use. Do not use any damaged part.
• Never ground yourself when taking
measurements.
• Do not touch exposed circuit elements or
probe tips.
• Never replace a fuse with one of a different
rating. Do not operate instrument in an
explosive atmosphere.
3
OVERLOAD INDICATION
Range overload is indicated by “1” in
the display with all other digits blanked.
Select the next higher range until a value is
displayed. If overload condition still exists in the
highest range, the measured value is beyond the
range of the meter. Overload indication is normal
in the OHMS range when the leads are not
connected to anything or when the measured
value is higher than the selected resistance range.
PREPARATION FOR USE - UNPACKING
Your package should include:
1 CR50A
1 Test lead set (one black, one red)
1Pair of alligator clips
1 9V battery (installed)
1 Spare 0.1A/250V fuse (inside the case)
1 Holster
1 Warranty Card
1 User manual
If any item is damaged or missing, return to the
place of purchase for an exchange.
MEASURING PROCEDURES
General: When connecting or disconnecting test leads
to/from a circuit, always first turn off power to device
or circuit being tested and discharge all capacitors.
4
Resistance Measurement
1. Turn off power to the resistance to be
measured and discharge any capacitors.
Any voltage present during a resistance
measurement will cause inaccurate readings.
Connect red test lead to +Rx Input (red) and
black test lead to -Rx Input.
2. Set Function/Range Switch to the desired
Ωposition.
3. Connect test leads to resistance or circuit to
be measured.
4. Read resistance value on Digital Display.
Open circuits will be displayed as an
overload condition.
Note: On the 20Ωrange, an adjustment
potentiometer (ZERO ADJ.) allows you to zero
out the test lead resistance. Short the test leads
and adjust the knob until the display reads zero.
Cx
200
n
20m
200p
200
ZERO
ADJUST
(20 )
OFF
20
2k
2M
20M
CR50
F
20
k
200
k
2m
200
20
2
20n
2n
CAP.
ZERO
ADJUST
Rx
DISCHARGE CAPACITOR
BEFORE CONNECTING
1.520 k
4
3
2
1
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