® 902 HVAC Clamp Meter Users Manual PN 2547887 May 2006 Rev. 1, 3/07 © 2006-2007 Fluke Corporation. All rights reserved. Printed in China. All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for three years from the date of purchase. 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 Fluke’s behalf.
Table of Contents Title Page Introduction....................................................... Contacting Fluke .............................................. Safety Information ............................................ Symbols ........................................................... Getting Acquainted with the Meter ................... Using the Meter ................................................ AC and DC Voltage Measurement................. Resistance and Continuity .........................
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List of Tables Table Title Page 1. 902 HVAC Clamp Meter Features.................... 7 2. Display Features .............................................. 9 List of Figures Figure 1. 2. 3. 4. 5. 6. Title 902 HVAC Clamp Meter Features.................... Display Features .............................................. Testing a Flame Rod ........................................ Temperature Measurement .............................. Proper AC Current Measurement..................... Battery Replacement....
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902 Introduction The Fluke 902 is a hand-held battery-operated HVAC Clamp Meter (“the Meter”) that measures: • AC current • DC current (up to 200 µA for flame rod testing) • AC and DC voltages • Capacitance • Resistance • Continuity • Temperature in both Celsius (°C) and Fahrenheit (°F) The Meter comes with: • Two AA alkaline batteries (installed) • Users Manual • Soft carrying case • TL75 Test Leads (one pair) • 80BK Integrated DMM Temperature Probe 1
902 Users Manual Contacting Fluke To contact Fluke, call one of the following telephone numbers: USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853) Europe: +31 402-675-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-446-5500 Or visit Fluke’s Web site at: www.fluke.com. Register the Meter at: http://register.fluke.
HVAC Clamp Meter Contacting Fluke Safety Information A “XW Warning” statement defines hazardous conditions and actions that could cause bodily harm or death. A “W Caution” statement identifies conditions and actions that could damage the Meter or the equipment under test. XWRead First: Safety Information To ensure safe operation and service of the Meter, follow these instructions: • Read the Users Manual before use and follow all safety instructions.
902 Users Manual 4 • Use caution when working with voltages above 60 V dc or 30 V ac rms or 42 V ac peak. Such voltages pose a shock hazard. • Clean the case with a damp cloth and mild detergent only. Do not use abrasives or solvents. • To avoid false readings that can lead to electrical shock and injury, replace the batteries as soon as the low battery indicator (B) appears.
HVAC Clamp Meter Symbols Symbols The following symbols are found on the Meter or in this manual. , May be used on hazardous live conductors W Risk of danger. Important information. See Users Manual. X Hazardous voltage. Risk of electric shock. T Double insulation B Battery ) Complies with Canadian and US Standards P Conforms to relevant European Union directives J Earth ground F DC (Direct Current) B AC (Alternating Current) ~ Do not dispose of this product as unsorted municipal waste.
902 Users Manual Getting Acquainted with the Meter Refer to Figures 1 and 2 and Tables 1 and 2 to become more acquainted with the Meter’s features. COM CAT 600V µA V efu0001.eps Figure 1.
HVAC Clamp Meter Getting Acquainted with the Meter Table 1.
902 Users Manual C D E F G B A efu0006.eps Figure 2.
HVAC Clamp Meter Getting Acquainted with the Meter Table 2. Display Features Number Indication Battery indicator -The batteries are low and need to be changed. XWWarning: To avoid false A readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the battery indicator appears.
902 Users Manual Using the Meter AC and DC Voltage Measurement To measure AC or DC voltage: 1. Insert the test leads into the Meter. 2. Turn the rotary switch to V. 3. Press A to choose AC or DC voltage. The display reflects the chosen voltage mode. 4. Use the test leads to take the measurement. The Meter reading appears on the display. Note When a measured voltage is above 30 V, Zappears on the display. When the voltage drops below 30 V, Zdisappears.
HVAC Clamp Meter Using the Meter Resistance and Continuity To measure resistance or continuity: XW Warning To avoid false readings that can lead to electrical shock and injury, de-energize the circuit before taking the measurement. 1. Insert the test leads into the Meter. 2. Turn the rotary switch to P. 3. Take the measurement. The resistance reading appears on the display. • If the resistance is shorted, the Meter beeps and shows a reading < 30 Ω.
902 Users Manual Microamps µA Measurement The µA dc (G) function on the Meter is primarily for HVAC flame rod testing. To test a heating system flame rod (refer to Figure 3): 1. Turn the heating unit off and locate the wire between the gas-burner controller and the flame rod. 2. Break this connection. 3. Turn the rotary switch on the Meter to G. 4. Using alligator clips, connect test leads between the flame sensor probe and control-module wire. 5.
HVAC Clamp Meter Using the Meter Burner efu0004.eps Figure 3. Testing a Flame Rod Temperature The Meter measures temperature in either Celsius (°C) or Fahrenheit (°F).
902 Users Manual 1. Connect the 80BK Integrated DMM Temperature Probe to the input jacks noting correct polarity of the probe. 2. Turn the rotary switch to F. 3. Press A to select °C or °F. The display reflects the chosen temperature mode. 4. Position the probe to take the measurement. The reading appears on the display. Note To meet stated accuracy, the 80BK and Meter must be at the same temperature.
HVAC Clamp Meter Using the Meter efu0005.eps Figure 4.
902 Users Manual Capacitance Turn off circuit power, then disconnect and discharge the capacitor before measuring capacitance. Turn the Meter’s rotary switch to capacitance (L). If the capacitor requires more discharging, diSC is displayed while the capacitor discharges. When measuring, be sure to note the correct polarity of the capacitor. AC Current Measurement XW Warning To avoid electrical shock and injury: • Remove Test Leads before making current measurements.
HVAC Clamp Meter Using the Meter efu0003.eps Figure 5.
902 Users Manual Backlight Press C to toggle the backlight on and off. The backlight automatically turns off after 2 minutes. To disable the automatic 2-minute backlight timeout, hold down Cwhile turning the Meter on. MIN MAX Recording Mode The MIN MAX recording mode captures the minimum and maximum input values. When a new high or low is detected, the Meter beeps. To use this feature: 1. Put the Meter into the desired measurement function and range. 2. Press Jto enter MIN MAX Mode.
HVAC Clamp Meter Using the Meter Display HOLD XWWarning To avoid possible electric shock or personal injury, when Display HOLD is activated, be aware that the display will not change when you apply a different voltage. In the Display HOLD mode, the Meter freezes the display. The Meter also beeps every 4 seconds and Hflashes to remind the user. Press Ito activate Display HOLD; His displayed and the reading is captured. To exit and return to normal operation, press I.
902 Users Manual Maintenance XWWarning To avoid possible electric shock or personal injury, repairs or servicing not covered in this manual should be performed only by qualified personnel. Cleaning the Meter XWWarning To avoid electrical shock, remove any input signals before cleaning. W 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 Meter.
HVAC Clamp Meter Maintenance Battery Replacement XWWarning 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 6): 1. Turn the rotary switch to “OFF” and remove the test leads from the terminals. 2.
902 Users Manual efu0002.eps Figure 6.
HVAC Clamp Meter Specifications Specifications Electrical Specifications Function Range Resolution Accuracy Voltage DC 0 – 600 V 0.1 V 1 % ± 5 counts Voltage AC (True Rms) 0 – 600 V 0.1 V 1 % ± 5 counts (50/60 Hz) Current AC (True Rms) 0 – 600 A 0.1 A 2.0 % ± 5 counts (50/60 Hz) Current DC 0 - 200 µA 0.1 µA 1.0 % ± 5 counts Resistance 0 – 999 Ω 0 – 9999 Ω 0.1 Ω 1.0 Ω 1.5 % ± 5 counts Continuity < 30 Ω Temperature -10 to 400 °C 0.1 °C 1 % ± 0.8 °C 1-100 µF 100-1000 µF 0.
902 Users Manual General Specifications Operating Temperature -10 °C to +50 °C Storage Temperature -40 °C to +60 °C Operating Humidity Non condensing (< 10 °C) 90 % RH (10 °C to 30 °C) 75 % RH (30 °C to 40 °C) 45 % RH (40 °C to 50 °C) (Without Condensation) Operating Altitude 2500 meters above mean sea level Storage Altitude 12,000 meters above mean sea level IP Rating IP 30 per IEC 60529 Vibration Requirements MIL-PRF-28800F Class 2 random vibration EMI, RFI, EMC EMI: instrument unspecified
HVAC Clamp Meter Specifications Size (H X W X L) 9.1 x 3.8 x 1.7 inches (240 x 80 x 40 mm) Weight 1.1 lb (310 g) Design Standards and Compliance IEC 61010, IEC 61010-2032,CE Agency Approvals P ) ; s N10140 Over-voltage Category Power Requirements 600 V, CAT III per IEC 1010-1 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.
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