Fluke 337, 336, 335, 334, 333 Service Manual

33X

ClampMeters

Calibration Information

Introduction

XWWarning

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 33X Calibration Information provides the information necessary to verify the performance and adjust

the calibration of the Fluke 333, 334, 335, 336, and 337 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 33x Instruction Cards 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

[phone] in Europe
[phone] Japan
[phone] Singapore
[phone] 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 register.fluke.com

PN 1618765 June 2001 Rev. 3, 4/06

© 2001-2006 Fluke Corporation. All rights reserved. Printed in U.S.A.

1

33x

Calibration Information

Safety Information

XWWarnings 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.

Y

W

T

M

)

P

J
F
B

;

N10140

s

~

Risk of electric shock

Risk of danger. Important Information. See manual.

Equipment protected by double or reinforced Insulation

Battery

Complies with U.S. and Canadian standards: UL61010B-1; CSA C22.2 No.1010.1-92
and amendment 2. Also complies with European standard EN 61010-2-032-04.

Conforms to EU directives

Earth

DC measurement

AC measurement

Conforms to relevant Australian standards

Inspected and licensed by TÜV Product Services

Do not dispose of this product as unsorted municipal waste. Contact Fluke or a qualified
recycler for disposal.

2

ClampMeters

Specifications

Specifications

*These specifications apply

@ 23 °C ± 5 °C, in relative

humidity of 0 - 90%

?

(50 Hz/60 Hz)

Inrush Current Integration

Range 0 - 400.00 A 0 - 600.0 A 0 - 999.9 A

Accuracy 2 % ± 5 counts (50/60 Hz) 2 % ± 5 counts (10 - 100 Hz)

Crest
Factor
add 2% for
CF > 2

AC
response

Time

Range NA NA NA 0 - 600.0 A 0 - 999.9 A A

Accuracy NA NA NA 2 % ± 5 counts

Range 0 - 600.00 V K

Accuracy 1 % ± 5 counts

333

NA NA 2.4 @ 500 A

Avg Rms

NA 100 ms

334

2.0 @ 600 A

50/60 Hz

335

3 @ 500 A

2.5 @ 600 A

336

6 % ± 5 counts (10 - 400 Hz)

3 @ 500 A

2.5 @ 600 A

1.42 @ 1000 A

1 % ± 5 counts (20 - 100 Hz)

6 % ± 5 counts (100 - 400 Hz)

337

Range 0 - 600.0 V L

Accuracy 1 % ± 5 counts

e

Continuity R ≤ 30 Ω

Trigger Level:
10-100 Hz ≥ 5 A
5-10 Hz,
100-400 Hz > 10 A

Storage
Temperature

Operating
Temperature

Altitude 2500 m

EMC- instrument unspecified for use in EMC field ≥ 0.5 V/m

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.

Range 0 - 600.0 Ω 0 - 600.0 Ω

600 - 6000 Ω

Accuracy 1.5 % ± 5 counts

Range NA NA NA NA 5.0 - 400.0 Hz Hz-Amps Only

Accuracy NA NA NA NA 0.5 % ± 5 counts

-40 °C to 60 °C

-10 °C to 50 °C

*< 18 °C,> 28 °C add 0.1 x (specified accuracy)/°C

3

33x

Calibration Information

Replacing the Batteries

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):

XWWarning

1. Turn the rotary switch to

OFF and remove the test leads from the terminals.

2. Loosen the battery compartment door screw, and remove the door from the case bottom.

3. Remove the batteries.

4. Replace the batteries with 2 new AA batteries.

5. Reattach the battery compartment door to the case bottom and tighten the screw.

Figure 1. Replacing the Batteries

Cleaning

XW Warning

To avoid electrical shock, remove any input signals before cleaning.

WCaution

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

adc02f.eps

static awareness

A Message From

Fluke Corporation

Some semiconductors and custom IC's can be
damaged by electrostatic discharge during
handling. This notice explains how you can
minimize the chances of destroying such devices
by:

1. Knowing that there is a problem.

2. Learning the guidelines for handling them.

3. Using the procedures, packaging, and
bench techniques that are recommended.

The following practices should be followed to minimize damage to S.S. (static sensitive) devices.

1. MINIMIZE HANDLING

2. KEEP PARTS IN ORIGINAL CONTAINERS

UNTIL READY FOR USE.

3. DISCHARGE PERSONAL STATIC BEFORE
HANDLING DEVICES. USE A HIGH RESIS­ TANCE GROUNDING WRIST STRAP.

4. HANDLE S.S. DEVICES BY THE BODY.

5. USE STATIC SHIELDING CONTAINERS FOR
HANDLING AND TRANSPORT.

6. DO NOT SLIDE S.S. DEVICES OVER
ANY SURFACE.

8. WHEN REMOVING PLUG-IN ASSEMBLIES
HANDLE ONLY BY NON-CONDUCTIVE
EDGES AND NEVER TOUCH OPEN EDGE
CONNECTOR EXCEPT AT STATIC-FREE
WORK STATION. PLACING SHORTING
STRIPS ON EDGE CONNECTOR HELPS
PROTECT INSTALLED S.S. DEVICES.

9. HANDLE S.S. DEVICES ONLY AT A
STATIC-FREE WORK STATION.

7. AVOID PLASTIC,VINYL AND STYROFOAM
IN WORK AREA.

PORTIONS REPRINTED
WITH PERMISSION FROM TEKTRONIX INC.
AND GERNER DYNAMICS, POMONA DIV.

 Dow Chemical

10. ONLY ANTI-STATIC TYPE SOLDER­ SUCKERS SHOULD BE USED.

11. ONLY GROUNDED-TIP SOLDERING
IRONS SHOULD BE USED.

