323/324/325 Clamp Meter Calibration Manual February 2013 © 2012 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
LIMITED WARRANTY AND 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 two years and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days.
Table of Contents Title Introduction ........................................................................................................ Contact Fluke ..................................................................................................... Safety Information ............................................................................................. Specifications .....................................................................................................
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List of Tables Table 1. 2. 3. 4. 5. Title Symbols .................................................................................................................. User-Replaceable Parts .......................................................................................... Required Equipment............................................................................................... Performance Tests ..................................................................................................
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List of Figures Figure Title 1. 2. 3. 4. Clamp Jaw (325 is Shown)..................................................................................... Battery Replacement .............................................................................................. Display Segments (324 and 325 Display is Shown) .............................................. Temperature, Volts, Ohms, Frequency, and Capacitance Performance Test Connections .................................................................
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Introduction The Fluke 323/324/325 Clamp Meters (the Product) measure ac and dc voltage, ac current, resistance, and continuity. The 324 and 325 can also measure capacitance and contact temperature. The 325 can also measure dc current and frequency. Note that the 325 is shown in all of the illustrations. For temperature measurement, you must use the included K-type thermocouple. Warning Read "Safety Information" before you use the Product.
323/324/325 Calibration Manual 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 by the Product can be compromised.
Clamp Meter Safety Information • • • • • • • • • • 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.
323/324/325 Calibration Manual 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 Double insulated 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.
Clamp Meter Specifications 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.
323/324/325 Calibration Manual 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...........................
Clamp Meter Maintenance 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.
323/324/325 Calibration Manual 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.
Clamp Meter Performance Tests 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.
323/324/325 Calibration Manual 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.
Clamp Meter Performance Tests 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”. 5522A 325 TRUE RMS CLAMP METER CAT CAT 600 V 300 V +/ 0 • hfk07.
323/324/325 Calibration Manual 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”.
Clamp Meter Performance Tests Table 4. Performance Tests Test (Switch Position) Temperature AC Volts DC Volts Ohms Capacitance Frequency Calibrator Output Meter Reading Limit 323 324 325 -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 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.
323/324/325 Calibration Manual Table 4. Performance Tests (cont.) Test (Switch Position) AC Amps (with 50Turn Coil) DC Amps (with 50Turn Coil) 14 Calibrator Output Meter Reading Limit 323 324 325 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.
Clamp Meter Calibration Adjustment 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.
323/324/325 Calibration Manual ion at l r b li a ca se 323 CAL Keypad 324 and 325 CAL Keypad Battery Contacts Figure 6. Short the CAL Keypad 16 hfk03.
Clamp Meter Calibration Adjustment Table 5. Calibration Adjustment Test LCD Reading (Switch Position) Calibrator Output 323 AC Volts DC Volts Ohms AC Amps (with 50-Turn Coil) 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 C-2.2 400 V C-3.1 400 Ω C-3.2 4000 Ω 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 AC Volts DC Volts Ohms C-21 0V C-22 0.02 V C-23 0.
323/324/325 Calibration Manual Table 8. Calibration Adjustment (cont.) Test LCD Reading (Switch Position) 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) DC Amps (with 50-Turn Coil) 18 C-24 0A C-25 0.02 A, 50 Hz C-26 0.
Clamp Meter Temperature Zero Procedure (324 and 325) 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.
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