Fluke 323 Use and care manual

323/324/325
Clamp Meter
Calibration Manual

323/324/325
Calibration Manual
2
Safety Information
A Warning identifies conditions and procedures that are dangerous to the user. A
Caution identifies conditions and procedures that could cause Product damage,
equipment under test damage, or permanent loss of data.
Table 1 shows the symbols used on the Product and in this manual.
Warning
To prevent possible electrical shock, fire, or personal injury:
•Use the Product only as specified, or the protection
supplied bythe Product can be compromised.
•Use only correct measurement category (CAT), voltage, and
amperage rated probes, test leads, and adapters for the
measurement.
•Do not touch voltages > 30 V ac rms, 42 V ac peak, or
60 V dc.
•Carefully read all instructions.
•Hold the Product behind the tactile barrier. See Figure 1,
item .
•Do not exceed the Measurement Category (CAT) rating of
the lowest rated individual component of a Product, probe,
or accessory.
•Do not measure current while the test leads are in the input
jacks.
•Do not use the Product around explosive gas, vapor, or in
damp or wet environments.
•Limit operation to the specified measurement category,
voltage, or amperage ratings.
•Do not work alone.
•Do not apply more than the rated voltage, between the
terminals or between each terminal and earth ground.
•Comply with local and national safety codes. Use personal
protective equipment (approved rubber gloves, face
protection, and flame-resistant clothes) to prevent shock
and arc blast injury where hazardous live conductors are
exposed.
•Replace the batteries when the low battery indicator shows
to prevent incorrect measurements.
•The battery door must be closed and locked before you
operate the Product.
•Measure a known voltage first to make sure that the Product
operates correctly.
•Remove all probes, test leads, and accessories that are not
necessary for the measurement.
•Only use probes, test leads, and accessories that have the
same measurement category and voltage rating as the
Product.
•Keep fingers behind the finger guards on the probes.

Clamp Meter
Safety Information
3
•Connect the common test lead before the live test lead and
remove the live test lead before the common test lead.
•Remove all probes, test leads, and accessories before the
battery door is opened.
•Do not use and disable the Product if it is damaged.
•Do not use the Product if it operates incorrectly.
•Do not use test leads if they are damaged. Examine the test
leads for damaged insulation, exposed metal. Check test
lead continuity.
•Before each use, examine the Product. Look for cracks or
missing pieces of the clamp housing. Also look for loose or
weakened components. Carefully examine the insulation
around the jaws. See Figure 1, item .
•Examine the case before you use the Product. Look for
cracks or missing plastic. Carefullylook at the insulation
around the terminals.
•Read all safety information before you use the Product.
•Remove batteries to prevent battery leakage and damage to
the Product if it is not used for an extended period.
•Remove the batteries if the Product is not used for an
extended period of time, or if stored in temperatures above
50 °C. If the batteries are not removed, battery leakage can
damage the Product.
Caution
To prevent possible damage to the Product or to equipment
under test, use a thermocouple rated for the temperatures to be
measured. The Product is rated for -10.0 °C to +400.0 °C and
14 °F to 752 °F. The included type-K thermocouple is rated to
260 °C.
1
2
300V
CAT
600V
CAT
hfk002.eps
Figure 1. Clamp Jaw (325 is Shown)

323/324/325
Calibration Manual
4
Table 1. Symbols
Symbol Meaning Symbol Meaning
Hazardous voltage. Risk of
electric shock. Risk of Danger. Important information. See Manual.
AC (Alternating Current) DC (Direct Current)
AC and DC Current Earth Terminal
Double insulated Battery

Application to or removal from
hazardous, live conductors is
permitted.
Conforms to European Union directives.
Conforms to relevant
Australian EMC standards. Inspected and licensed by TÜV Product Services.

This product has been tested
to the requirements of
CAN/CSA-C22.2 No. 61010-1,
second edition, including
Amendment 1, or a later
version of the same standard
incorporating the same level of
testing requirements.
Conforms to European Union directives.
CAT II
Measurement category II is
applicable to test and
measuring circuits connected
directly to utilization points of
low voltage mains installation.
CAT III
Measurement Category III is applicable to
test and measuring circuits connected to the
distribution part of the building’s low-voltage
MAINS installation.
CAT IV
Measurement Category IV is
applicable to test and
measuring circuits connected
at the source of the building’s
low-voltage MAINS
installation.

This product complies with the WEEE
Directive (2002/96/EC) marking
requirements. The affixed label indicates
that you must not discard this
electrical/electronic product in domestic
household waste. Product Category: With
reference to the equipment types in the
WEEE Directive Annex I, this product is
classed as category 9 "Monitoring and
Control Instrumentation” product. Do not
dispose of this product as unsorted
municipal waste. Go to Fluke’s website for
recycling information.
Note
This product complies with the
Regulation for the Administration of the
Recovery and Disposal of Waste
Electrical and Electronic Products
(China).

Clamp Meter
Specifications
5
Note
The Measurement Category (CAT) and voltage rating of combinations of
test probes, test probe accessories, current clamp accessories, and the
Product is the LOWEST rating of individual components.
Specifications
Electrical Specifications
AC Current (Jaw)
Range
323.....................................................400.0 A
324, 325.............................................(40.00, 400.0) A
Resolution
323.....................................................0.1 A
324, 325.............................................(0.01, 0.1) A
Accuracy
323, 325............................................2.0 % ±5 digits (45 - 65 Hz)
2.5
% ±5 digits (65 - 400 Hz)
324....................................................1.5 % ±5 digits (45 Hz to 400 Hz)
Note: Add 2 % for position sensitivity
DC Current with Jaw (325)
Range .....................................................(40.00, 400.0) A
Resolution............................................... (0.01, 0.1) A
Accuracy .................................................2.0 % ±5 digits
AC Voltage
Range .....................................................600.0 V
Resolution............................................... 0.1 V
Accuracy (45 – 400 Hz) ..........................1.5 % ±5 digits
DC Voltage
Range ....................................................600.0 V
Resolution............................................... 0.1 V
Accuracy .................................................1 % ±5 digits
Resistance
Range
323, 324.............................................(400.0, 4000) Ω
325.....................................................(400.0, 4000, 40000) Ω
Resolution............................................... (0.1, 1, 10) Ω
Accuracy .................................................1 % ±5 digits
Continuity Beeper
323....................................................≤70 Ω
324/325.............................................≤30 Ω
Capacitance (324, 325)
Range .....................................................(100.0, 1000) μF
Resolution............................................... (0.1, 1) μF
Accuracy .................................................1 % ±4 digits
Frequency (325)
Range .....................................................5.0 to 500.0 Hz
Resolution............................................... 0.1 Hz
Accuracy .................................................0.5 % ±4 digits
Trigger Level...........................................5 to 10 Hz, ≥10 A
10 to 100 Hz, ≥5 A
100 to 500 Hz, ≥10 A

323/324/325
Calibration Manual
6
Contact Temperature (324, 325)
Range .....................................................-10.0 °C to 400.0 °C
Resolution............................................... 0.1 °C
Accuracy .................................................1 % ±8 digits
Note: Temperature uncertainty (accuracy) does not include error of the thermocouple probe.
Mechanical Specifications
Size (L x W x H) .....................................(207 x 75 x 34) mm
Weight
323.....................................................265 g
324.....................................................208 g
325.....................................................283 g
Environmental Specifications
Operating Temperature........................... -10 °C to +50 °C
Storage Temp .........................................-30 °C to +60 °C
Operating Humidity .................................Non Condensing (≤10 °C)
≤90 % RH (at 10 °C to 30 °C)
≤75 % RH (at 30 °C to 40 °C)
≤45 % RH (at 40 °C to 50 °C)
(Without Condensation)
Operating Altitude ...................................2000 meters
Storage Altitude ......................................12,000 meters
EMI, EMC................................................Meets all applicable requirements in EN/IEC 61326-1
Temperature Coefficients........................Add 0.1 x specified accuracy for each degree C above 28 °C or below 18 °C
Over Voltage Category ...........................CAT IV 300 V, CAT III 600 V
Safety Compliance.................................. EN/IEC 61010-1, Pollution Degree 2
EN/IEC 61010-2-032
EN/IEC 61010-031

Agency Approvals...................................Complies with CAN/CSA-C22.2 No. 61010-1
IP Rating .................................................IP 30 Per IEC 60529; Non-operating
Batteries..................................................2 AAA, NEDA 24A, IEC LR03

Clamp Meter
Maintenance
7
Maintenance
Clean the Product
Caution
To prevent possible damage to the Product or to equipment
under test, do not use abrasive cleaners. They will damage the
case.
Regularly wipe the case with a damp cloth and weak detergent.
To clean the Product Jaw:
1. Examine the jaw-mating surface to make sure it is clean. If there is unwanted
material (including rust), jaw closure will not be correct and there will be
measurement errors.
2. Open the jaws and clean the clamp metal ends with a non-flammable oil and cloth.
Battery Replacement
 Warning
To prevent possible explosion, fire, or personal injury, replace
the batteries when the low battery indicator (B) shows to
prevent incorrect measurements.
Caution
To prevent possible damage to the Product or to equipment
under test:
•Remove batteries to prevent battery leakage and damage to
the Product if it is not used for an extended period.
•Be sure that the battery polarity is correct to prevent battery
leakage.
To change the batteries, see Figure 2:
1. Make sure the Product is off.
2. Turn over the Product to access the battery compartment door screw.
3. Use a flat-head screwdriver to loosen the battery compartment door screw and lift off
the battery compartment door.
4. Replace the two AAA batteries. Make sure to use the correct polarity when you put
the batteries into the battery compartment door.
5. Reattach the battery compartment door.
6. Tighten the battery compartment door screw.

323/324/325
Calibration Manual
8
AAA
hfj007.eps
Figure 2. Battery Replacement
User-Replaceable Parts
User-replaceable parts are shown in Table 2.
Table 2. User-Replaceable Parts
Fluke Part
Number Description Qty
3986568 FLUKE-CAP-2001,TL7X PROBE CAP,BLACK 1
3986579 FLUKE-CAP-2001-01,TL7X PROBE CAP,FLUKE RED 1
2838018 BATTERY 1.5V LR03 ALKALINE AAA 2
4146344 BATTERY DOOR 1
4166286 SOFT CASE BLACK/YELLOW VINYL 1
4045153 323/324/325 USERS MANUAL 1
1997234 THERMOCOUPLE ASSEMBLY K-TYPE BEADED MOLDED DUAL
BANANA PLUG COILED BULK 1
Required Equipment
The equipment in Table 3 is necessary for the performance tests and calibration
adjustment.
Table 3. Required Equipment
Equipment Required Characteristics Recommended Model
Calibrator 4.5-digit resolution Fluke 5520A Calibrator or
Equivalent
Wired coil 50 turns 5500A/COIL

Clamp Meter
Performance Tests
9
Performance Tests
Warning
To prevent possible electrical shock, fire, or personal injury,
do not go through the performance test procedures unless the
Product is fully assembled.
The performance tests verify the full operation of the Product and measure the accuracy
of each function against Product specifications. If the Product fails a part of the test,
calibration adjustment and/or repair is necessary. See “Calibration Adjustment”.
Before you do the performance tests:
1. Make sure that you have the necessary equipment. See Table 3.
2. Make sure the Product batteries are good and replace them if necessary. See “Battery
Replacement”.
3. Warm up the Calibrator as necessary. Refer to its specifications.
4. Let the temperature of the UUT (unit under test) become stable to room temperature.
Test the Display
To verify that all segments of the display function:
1. With the Product off, push and hold any of the buttons.
2. Turn the rotary switch on while you hold down the button. All of the display
segments are shown. See Figure 3.
If segments of the display are missing, repair is necessary. See “Contact Fluke”.
hfk001.eps
Figure 3. Display Segments (324 and 325 Display is Shown)

323/324/325
Calibration Manual
10
Firmware Version and Model Number
To see the Product firmware version and model number:
323:
1. Turn on the Product with the HOLD button held down.
2. After the display segments are shown, release the HOLD button.
3. The Product shows:
•“POFF” for the auto-power off function
•“r003” or the current firmware version
•“F323” (Fluke 323)
324/325:
1. Turn on the Product.
2. The display shows:
“F32X” (Fluke 324 or Fluke 325)
1. Turn on the Product with the F/C button held down.
2. After the display segments are shown, release the F/C button.
3. The display shows:
“r0.52” or the current firmware version
Backlight (324 and 325)
To verify that the backlight functions:
1. With the Product on, push . The backlight will come on.
2. Push again to turn the backlight off.
3. If the backlight does not function correctly, repair is necessary. See “Contact Fluke”.
Button Test
To verify that the buttons function, turn on the Product and push each button separately.
Each button push causes the Product to beep and the display to change. For the 324 and
325, note that the Product beeps twice if the Product is in the wrong mode for the pushed
button. If the buttons do nothing, repair is necessary. See “Contact Fluke”.

Clamp Meter
Performance Tests
11
Temperature, Volts, Ohms, Frequency, and Capacitance
To do the temperature, volts, ohms, and capacitance performance tests:
1. Connect the Calibrator NORMAL output and ground to the Product. See Figure 4 for
the connections.
2. Apply the values shown in Table 4. 
If the Product shows indications outside of the limits shown in Table 4, calibration
adjustment is necessary. See “Calibration Adjustment”.
0•
/
+
300V
CAT 600VCAT
325
TRUE RMS CLAMP METER
5522A
hfk07.eps
Figure 4. Temperature, Volts, Ohms, Frequency, and Capacitance Performance Test Connections

323/324/325
Calibration Manual
12
Current
To do the current tests:
1. Connect the Calibrator current output and ground to the 50-Turn Coil. See Figure 5.
2. Turn the Product to the necessary current mode.
3. Apply the input level for each step shown in Table 4.
4. Compare the indication on the Product display with the UUT reading limits in
Table 4.
5. If the Product shows indications outside of the limits shown in Table 4, calibration
adjustment is necessary. See “Calibration Adjustment”.
0•
/
+
5522A
50-Turn Coil
Conductor
hfk025.eps
Figure 5. AC Current Test Connections

Clamp Meter
Performance Tests
13
Table 4. Performance Tests
Test
(Switch
Position)
Calibrator
Output 323 324 325
Meter Reading Limit
Low High
Temperature
-5 °C N/A X X -5.8 °C -4.2 °C
0 °C N/A X X -0.8 °C 0.8 °C
100 °C N/A X X 98.2 °C 101.8 °C
400 °C N/A X X 395.2 °C 404.8 °C
AC Volts
10 V @ 50 Hz X X X 9.3 V 10.7 V
500 V @ 50 Hz N/A X X 492.0V 508.0 V
500 V @ 500 Hz N/A X X 492.0V 508.0 V
600 V @ 50 Hz X N/A N/A 590.5 V 609.5 V
600 V @ 400 Hz X N/A N/A 590.5 V 609.5 V
DC Volts
-600 V X N/A N/A -606.5 -593.5 V
-500 V N/A X X -505.5 V -494.5 V
10 V X X X 9.4 V 10.6 V
500 V N/A X X 494.5 V 505.5 V
600 V X N/A N/A 593.5 V 606.5 V
Ohms
0 ΩX N/A N/A 0.0 Ω0.5 Ω
10 ΩX X X 9.4 Ω10.6 Ω
300 ΩN/A X X 296.5 Ω303.5 Ω
350 ΩX N/A N/A 346.0 Ω354.0 Ω
1000 ΩN/A X X 985 Ω1015 Ω
3000 ΩN/A X X 2965 Ω3035 Ω
3500 ΩX N/A N/A 3460 Ω3540 Ω
10K ΩN/A X X 9.85 KΩ10.15 KΩ
30K ΩN/A X X 34.65 KΩ30.35 Ω
Capacitance
10 μF N/A X X 9.5 μF 10.5 μF
500 μF N/A X X 491 μF 509 μF
900 μF N/A X X 887 μF 913 μF
Frequency
0.2 A, 5 Hz N/A N/A X 4.7 Hz 5.3 Hz
0.2 A, 50 Hz N/A N/A X 49.6 Hz 50.4 Hz
0.2 A, 500 Hz N/A N/A X 497.5 Hz 501.5 Hz

323/324/325
Calibration Manual
14
Table 4. Performance Tests (cont.)
Test
(Switch
Position)
Calibrator
Output 323 324 325
Meter Reading Limit
Low High
AC Amps
(with 50-
Turn Coil)
0.12 A @ 50 Hz X N/A N/A 5.4 A 6.6 A
0.48 A @ 150 Hz X N/A N/A 22.9 A 25.1A
4.2 A @ 50Hz X N/A N/A 205.3 A 214.7 A
7.8 A @ 50 Hz X N/A N/A 381.7 A 398.3 A
7.8 A @ 150 Hz X N/A N/A 379.7 A 400.3 A
7.8 A @ 400 Hz X N/A N/A 379.7 A 400.3 A
0.004 A @ 50 Hz N/A X N/A 0.15 A 0.25 A
0.2 A @ 50 Hz N/A X N/A 9.80 A 10.20 A
0.6 A @ 50 Hz N/A X N/A 29.50 A 30.50 A
2 A @ 50 Hz N/A X N/A 97.5 A 102.5 A
6 A @ 50 Hz N/A X N/A 293.5 A 306.5 A
0.2 A @ 50 Hz N/A N/A X 9.75 A 10.25 A
0.6 A @ 50 Hz N/A N/A X 29.35 A 30.65 A
2 A @ 50 Hz N/A N/A X 98.0 A 102.0 A
6 A @ 50 Hz N/A N/A X 295.0A 305.0 A
DC Amps
(with 50-
Turn Coil)
0.2 A N/A N/A X 9.75 A 10.25 A
0.6 A N/A N/A X 29.35 A 30.65 A
2 A N/A N/A X 97.5 A 102.5 A
6 A N/A N/A X 293.5 A 306.5 A

Clamp Meter
Calibration Adjustment
15
Calibration Adjustment
The Product features closed-case calibration adjustment and uses known reference
sources. The Product measures the applied reference source, calculates correction factors,
and stores the correction factors in nonvolatile memory.
Should the Product fail any of the performance tests, do the calibration adjustment
procedure.
To do the calibration adjustment:
1. Remove the Product battery door. See “Battery Replacement”.
2. Apply 3.0 V across the battery contacts on the pca. Note the polarity that is shown in
Figure 6.
3. Turn the rotary switch to the function that you will adjust.
4. Remove the calibration seal.
5. Short across the CAL keypad on the pca and then remove the short. See Figure 6.
This puts the Product into calibration mode.
6. When “C-1.2” is shown on the Product display, apply the correct input signals from
the Calibrator to the Product as shown in Table 5. After confirmation, the Product
goes to the subsequent calibration step.
7. After each step, push the HOLD button to confirm the calibration step and go to the
next step. Set the Calibrator to Standby after you complete adjustment of each
function.
Notes
For 323, if any calibration point is missing “Err” is shown on the display.
After you push the HOLD button, wait until the calibration step number
advances before you change the calibrator source. Some adjustment steps
can take several seconds to execute before the Product goes to the
subsequent step.
8. When calibration adjustment is complete, remove the 3.0 V supply. The Product will
automatically exit calibration mode.
9. Replace the batteries and battery door.

323/324/325
Calibration Manual
16
calibration
seal
Battery Contacts
324 and 325
CAL Keypad
323 CAL Keypad
hfk03.eps
Figure 6. Short the CAL Keypad

Clamp Meter
Calibration Adjustment
17
Table 5. Calibration Adjustment
Test
(Switch Position) LCD Reading Calibrator Output
323
AC Volts
C-1.1 1.05 V, 50 Hz
C-1.2 40 V, 50 Hz
C-1.3 10 V, 50 Hz
C-1.4 300 V, 50 Hz
DC Volts C-2.2 400 V
Ohms C-3.1 400 Ω
C-3.2 4000 Ω
AC Amps
(with 50-Turn Coil)
C-4.1 0.019 A, 50 Hz
C-4.2 0.42 A, 50 Hz
C-4.3 1.026 A, 50 Hz
C-4.4 6 A, 50 Hz
[1]324 and 325
Temperature
C-21 0 V
C-22 0.02 V
C-23 0.02 V
AC Volts
C-00 600 V, 50 Hz
C-01 600 V, 100 Hz
C-02 600 V, 200 Hz
C-03 600 V, 300 Hz
C-04 600 V, 400 Hz
DC Volts
C-05 0 V
C-06 600 V
C-07 0 V
C-08 0.5 V
Ohms
C-09 0 Ω
C-10 400 Ω
C-11 440 Ω
C-12 4000 Ω
C-13 (325 only) 4400 Ω
C-14 (325 only) 40000 Ω
[1] At each function, after all calibration points is adjusted, the display shows “Save” after the last
calibration point. Push HOLD to save the calibration data.

323/324/325
Calibration Manual
18
Table 8. Calibration Adjustment (cont.)
Test
(Switch Position) LCD Reading Calibrator Output
324 and 325
Capacitance
C-15 0.1 μF
C-16 0.5 μF
C-17 1.5 μF
C-18 110 μF
C-19 500 μF
C-20 1000 μF
324
AC Amps
(with 50-Turn Coil)
C-24 0.8 A, 50 Hz
C-25 0.8 A, 100 Hz
C-26 0.8 A, 200 Hz
C-27 0.8 A, 300 Hz
C-28 0.8 A, 400 Hz
C-29 8 A,50 Hz
325
AC Amps
(with 50-Turn Coil)
C-24 0 A
C-25 0.02 A, 50 Hz
C-26 0.8 A, 50 Hz
C-27 0.8 A, 100 Hz
C-28 0.8 A, 200 Hz
C-29 0.8 A, 300 Hz
C-30 0.8 A, 400 Hz
C-31 8 A, 50 Hz
DC Amps
(with 50-Turn Coil)
C-32 0 A
C-33 0.02 A
C-34 0.8 A
C-35 0.88 A
C-36 8 A

Clamp Meter
Temperature Zero Procedure (324 and 325)
19
Temperature Zero Procedure (324 and 325)
1. Turn off the Product and wait 20 minutes.
2. Connect a K-type thermocouple connector from the Calibrator to the Product.
3. After 20 minutes, with the Product still connected to the 3.0 V, turn on the Product
and short across the CAL keypad on the pca. See Figure 6.
4. Turn the Product rotary switch to temperature.
5. Push twice until “C-23” shows on the Product display.
6. Apply 0 °C from the Calibrator.
7. Push the HOLD button to confirm C-23.
8. Push the HOLD button to save the calibration data.
The calibration adjustment procedure is complete.

323/324/325
Clamp Meter
Users Manual