Calibration Information
®
32X
ClampMeters
Calibration Information
Introduction
WWarning
To avoid electric shock or injury, do not perform the performance tests or
calibration procedures unless you are qualified to do so.
The information provided in this manual is for the use of qualified personnel
only.
The 32X Calibration Information provides the information necessary to verify the performance and adjust
the calibration of the Fluke 321 and 322 ClampMeters, hereafter known as the Meter(s).
The following information is included in this document:
•
•
•
•
•
•
•
•
Safety Information and International Electrical Symbols
Specifications
Replacing the Batteries
Cleaning
Performance Tests
Calibration Adjustment
User-Replaceable Parts and Accessories
Warranty Statement
See the 321,322 Instruction Card for complete operating instructions.
Contact Information
To contact Fluke, call:
1-888-99-FLUKE (1-888-993-5853) in USA
1-800-36-FLUKE (1-800-363-5853) in Canada
+31 402-678-200 in Europe
+81-3-3434-0181 Japan
+65-276-6196 Singapore
+1-425-446-5500 in other countries
For additional information about Fluke, its products, and services, visit Fluke’s web site at:
www.fluke.com
To register this product, go to www.register.fluke.com
PN 1631636 October 2001
© 2001 Fluke Corporation. All rights reserved. Printed in U.S.A.
1
32x
Calibration Information
Safety Information
WWarnings and Precautions
To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter
or the equipment under test, adhere to the following practices:
• Avoid working alone so assistance can be rendered.
• Never use the Meter on a circuit with voltages higher than 600 V or a frequency
higher than 400 Hz fundamental. The meter may be damaged.
• Do not use the Meter or test leads if they look damaged.
• Use extreme caution when working around bare conductors or bus bars. Contact
with the conductor could result in electric shock.
• Read the instruction card and safety sheet before use and follow all safety instructions.
• Use the Meter only as specified in the instruction card; otherwise, the Meter’s safety
features may be impaired.
• Use caution when working with voltages above 60 V dc or 30 V ac. Such voltages
pose a shock hazard.
•
Before using the Meter, inspect the case. Do not use the Meter if it is damaged. Look for
cracks or missing plastic. Pay particular attention to the insulation around the connectors.
•
Verify the Meter’s operation by measuring a known voltage. Do not use the Meter if it
operates abnormally. Protection may be impaired. When in doubt, have the Meter serviced.
•
Do not apply more than the rated current or voltage, as marked on the Meter.
•
Use the proper terminals, function, and range for your measurements.
•
Do not operate the Meter with the case (or part of the case) removed.
•
When servicing the Meter, use only specified replacement parts.
International Electrical Symbols
The following international symbols appear in this document and on the Meter.
Risk of electric shock
Risk of danger. Important Information. See manual.
Equipment protected by double or reinforced Insulation
Battery
Conforms to CSA C22.2 No 1010. 2.032-96
Conforms to EU directives
Earth
DC measurement
AC measurement
Conforms to relevant Australian standards
N10140
Conforms to UL 3111-1 and UL 3111-2-032
Inspected and licensed by TÜV Product Services
2
ClampMeters
Specifications
Specifications
*@ 23 °C ± 5 °C, 0 - 90% RH
?
(50/60 Hz)
321
Range
322
0 - 400.0 A
0 - 40.0 A
40 .0 - 400.0 A
50 Hz - 60 Hz 1.8 % ± 5 counts
60 Hz - 400 Hz 3.0 % ± 5 counts
Accuracy
AC Response
K
Avg
Range
L
0 - 400.0 V, 400 - 600 V
Accuracy
50 Hz - 400 Hz 1.2 % ± 5 counts
Range
_
0 - 400.0 V, 400 - 600 V
1 % ± 5 counts
Accuracy
e
0 - 400.0 Ω
Range
1.0 % ± 5 counts
Accuracy
Continuity
≤ 30 Ω
R
Jaw Opening
1 inch (26 mm)
IP Rating
40
Storage Temperature
-40 °C to 60 °C
Operating Temperature
-10 °C to 50 °C
Altitude
2000 m
EMC- EN61326
CAT III 600 V, pollution degree II:
CAT III equipment is designed to protect against transients in equipment in fixed-equipment installations, such as
distribution panels, feeders and short branch circuits, and lighting systems in large buildings.
* < 18 °C, > 28 °C add 0.1 x (specified accuracy)/ °C
3
32x
Calibration Information
Replacing the Batteries
WWarning
To avoid false readings, that could lead to possible electric shock or personal
injury, replace the batteries as soon as the low battery indicator ( b ) appears.
Disconnect the test leads before replacing the batteries.
To replace the batteries (refer to Figure 1):
1. Turn the rotary switch to OFF and remove the test leads from the terminals.
2.
3.
4.
5.
Loosen the battery compartment door screw, and remove the door from the case bottom.
Remove the batteries.
Replace the batteries with 2 new AAA batteries.
Reattach the battery compartment door to the case bottom and tighten the screw.
1
2
AAA
ade02.eps
Figure 1. Replacing the Batteries
Cleaning
W Warning
To avoid electrical shock, remove any input signals before cleaning.
Caution
To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated
solvents for cleaning. These solutions will react with the plastics used in the
instruments.
Clean the instrument case with a damp cloth and mild detergent.
4
ClampMeters
Performance Tests
Performance Tests
WWarning
To avoid electric shock, do not perform the performance test procedures unless
the Meter is fully assembled.
The following performance tests verify the complete operation of the Meter and check the accuracy of
each meter function against the Meter’s specifications. If the Meter fails any part of the test, calibration
adjustment and/or repair is indicated.
In the performance tests, the Meter is referred to as the unit under test (UUT).
Table 1. Required Equipment
Equipment
Minimum Specifications
Recommended Model
AC Calibrator
DC Voltage: 0 to ±1020 V
AC Voltage: 1 mV to 1020 V, 10 Hz to 500 kHz, Sine
AC Current: 29 µA to 20.5 A, 10 Hz to 30 kHz, Sine
Ohms: 0 to 1100 MΩ
Fluke 5520A
50-Turn Current
Coil
Uncertainty due to Clampmeter/ Coil Interaction: ± (0.25% of effective
output + 0.5A), for toroidal-wound current clamps, such as the Fluke
80I and 80I-1000.
± (0.50% of effective output + 0.5A), for current clamps like the Fluke
80i-kw, 80i-400, 80i-410, 80i-500, 80i-1010, Fluke 31, Fluke 33, or
equivalent.
Fluke 5500A/Coil
Mirror
Testing the Display
Test the display by turning the Meter on while holding down the HOLD button. Check all segments for
clarity and contrast. Refer to Figure 2.
V
V
On/Off
A
OFF
HOLD
322
CLAMP METER
ade01f.eps
Figure 2. Testing the Display
5
32x
Calibration Information
Hold Button Test
To test the HOLD button, turn the Meter on and push the hold button. Each button push will cause the
Meter to beep.
Preparing for the Performance Test
WWarning
To avoid possible electric shock or personal injury:
•
Do not perform the following procedures unless qualified to do so. Some
procedures involve the use of high voltages.
•
Before handling the test connections and in between tests, make sure the
calibrator is in standby mode (STBY).
To prepare for the performance test:
1. Make sure that you have the required equipment, see Table 1.
2. Warm up the calibrator as required by its specifications.
3. Allow the temperature of the UUT to stabilize at room temperature ( 23 °C ± 5 °C [73 °F ± 9 °F] ).
6
ClampMeters
Performance Tests
Performance Test Procedure
To test each of the Meter’s functions and operating ranges, do the following:
1. Connect the source to the Meter’s VΩ and COM input jacks.
2. Referring to Table 2 for the 321 and Table 3 for the 322, put the Meter in the desired function and
range for each test.
3. Apply the indicated output from the 5520A Calibrator.
4. When using the amp function on the 5520A, make sure LCOMP on the 5520A is ON.
5. The reading on the Meter display should be within the low and high limits shown in the table.
6. Repeat steps 1-4 for each function and range in Table 2 or Table 3.
If the Meter fails to perform within the low-high range indicated for each test in Table 2 or Table 3, the
Meter needs to be calibrated and adjusted, or requires some repair.
50-Turn Current Coil
Conductor
5520A Calibrator
CA
T
V
40600V
0A
A
OF
F
HO
LD
CLA
MP
ME 322
TE
R
CO
M
60
0V
CA M
T A
X
V
ade07f.eps
Figure 3. 32x Amps/Hz Verification Setup
7
32x
Calibration Information
Table 2. Performance Tests 321
Functional Test
AC Amps
Ohms
5520 output
Nominal
Low Limit
High Limit
0.7 A @ 50 Hz
35 A @ 50 Hz
33.8
36.2
0.7 A @ 400 Hz
35 A @ 400 Hz
33.4
36.6
6 A @ 60 Hz
300 A @ 60 Hz
294.1
305.9
7 A @ 50 Hz
350 A @ 50 Hz
343.2
356.8
7 A @ 400 Hz
350 A @ 400 Hz
339.0
361.0
30 Ohm
30 Ohms
29.2
30.8
Beeper must be on
50 Ohm
50 Ohms
49.0
51.0
Beeper must be off
AC Volts
8
350 Ohm
350 Ohms
346.0
354.0
35 V @ 50 Hz
35 V @ 50 Hz
34.0
36.0
350 V @ 60 Hz
350 V @ 60 Hz
345.3
354.7
600 V @ 60 Hz
600 V @ 60 Hz
592.3
607.7
35 V @ 400 Hz
35 V @ 400 Hz
34.0
36.0
350 V @ 400 Hz
350 V @ 400 Hz
345.3
354.7
600 V @ 400 Hz
600 V @ 400 Hz
592.3
607.7
ClampMeters
Performance Tests
Table 3. Performance Tests 322
Functional
Test
AC Amps
Ohms
5520A Output
Nominal
Low Limit
High Limit
0.6 A @ 60 Hz
30 A @ 60 Hz
28.9
31.1
0.07 A @ 50 Hz
3.5 A @ 50 Hz
2.9
4.1
0.7 A @ 50 Hz
35 A @ 50 Hz
33.4
36.6
0.07 A @ 400 Hz
3.5 A @ 400 Hz
2.9
4.1
0.7 A @ 400 Hz
35 A @ 400 Hz
33.4
36.6
1 A @ 50 Hz
50 A @ 50 Hz
48.6
51.4
7 A @ 50 Hz
350 A @ 50 Hz
343.2
356.8
7 A @ 400 Hz
350 A @ 400 Hz
339.0
361.0
1 A @ 400 Hz
50 A @ 400 Hz
48.0
52.0
30 Ohm
30 Ohms
29.2
30.8
Beeper must be on
50 Ohm
50 Ohms
49.0
51.0
Beeper must be off
AC Volts
DC Volts
350 Ohm
350 Ohms
346.0
354.0
35 V @ 50 Hz
35 V @ 50 Hz
34.0
36.0
350 V @ 60 Hz
350 V @ 60 Hz
345.3
354.7
600 V @ 60 Hz
600 V @ 60 Hz
592.3
607.7
35 V @ 400 Hz
35 V @ 400 Hz
34.0
36.0
350 V @ 400 Hz
350 V @ 400 Hz
345.3
354.7
600 V @ 400 Hz
600 V @ 400 Hz
592.3
607.7
-350 V
-350V
-355.8
-344.2
35 V
35V
33.9
36.1
350 V
350V
344.2
355.8
600 V
600V
590.5
609.5
9
32x
Calibration Information
321 Calibration Adjustment
Use the following steps to adjust the calibration of the 321 (refer to Figure 4):
1. Remove the screws on the bottom of the Meter.
2. Lift off the top case.
3. Apply 600.0 V 50 Hz from the 5520A.
4. Adjust VR1 until display reads within 1.0 V.
5. Apply 4 A 50 Hz from the 5520A to the 50-turn coil. The 50-turn coil will make the meter read 200.0
A 50 Hz .
6. Adjust VR2 until the display reads within 0.5 A. A mirror will need to be used because the calibration
point cannot be seen from the top side of the meter.
7. Replace the top case.
8. Replace the case screws.
9. Verify the calibration by going through the performance test procedures.
10
ClampMeters
Performance Tests
VR3
VR2
VR1
ade05f.eps
Figure 4. Calibration Adjustment Points (321)
11
32x
Calibration Information
322 Calibration Adjustment
Use the following steps to adjust the calibration of the meter (refer to Figure 5):
1. Turn the meter to DC V.
2. Remove the screws on the bottom of the Meter.
3. Lift off the top case.
4. Apply 300.0 V DC from the 5520A to the Meter..
5. Adjust VR1 until the UUT (Unit Under Test) display reads within 0.1 V.
6. Change the meter to the V AC function.
7. Apply 300 V @ 60 Hz.
8. Adjust VR2 until the UUT display reads within 0.1. V.
9. Change to the A AC function.
10. Apply 6 A 60 Hz to the 50-turn coil. The 50-turn coil will cause the Meter read this as 300.0 A 60Hz.
11. Adjust VR3 until this difference between steps 8 and 11 is within 0.1 A. A mirror will need to be used
because the calibration point cannot be seen from the top side of the meter.
12. Replace top case.
13. Verify the calibration by going through the Performance Test procedures.
12
ClampMeters
Performance Tests
VR2
VR1
ade06f.eps
Figure 5. Calibration Adjustment Points 322
13
32x
Calibration Information
User-Replaceable Parts and Accessories
T
A
C
0VA
6000
4
V
A
FF
O
LD
O
H
T
E
M
2
32 R
E
P
M
LA
C
M
O
C
A
M
0V T
6 0 CA
X
V
3
1
2
ade08f.eps
Item #
A
B
C
Description
Part No
Qty
Battery,1.5V,0-150MA, AA Alkaline
376756
2
Battery Door
1611694
1
TL75 Test Lead Set**
855705
1
Not Shown
321, 322 Safety Sheet
1615215
1
Not Shown
321, 322 Instruction Card
1615194
1
Calibration Information (this document)
1631636
1
Not Shown
** Fluke accessories are available from your authorized Fluke distributor.
Figure 6. User-Replaceable Parts and Accessories
14
ClampMeters
User-Replaceable Parts and Accessories
LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period
is 2 years 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, contaminated, 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 only 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.
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.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization information, then send the
product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). 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 failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal condition of operation or
handling, including overvoltage failures caused by use outside the product’s specified rating, or normal wear and tear of mechanical
components, 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).
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, ARISING FROM ANY CAUSE OR THEORY.
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 or other decision-maker 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
5602 BD Eindhoven
The Netherlands
11/99
To register this product, go to www.register.fluke.com
15
32x
Calibration Information
16
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