MILWAUKEE ELECTRIC TOOL CORPORATION – TEST & MEASUREMENT PRODUCT REPAIR SERVICE INSTRUCTIONS — CALIBRATION 2238-20 Clamp Meter for HVAC/R 2239-20 Clamp Meter Environmental Condition Perform all calibration at an ambient temperature of 23°C ± 2°C / 73.4°F ± 3.6°F and relative humidity of 80% - allow the fork meter to sit at this temperature for a minimum of 30 minutes before proceeding.
TABLE OF CONTENTS Page Introduction 1 Precautions and Safety Information 1 Symbols 1 Safety 2 Specifications 3 General Specifications 3 Functional Description 3 Voltage Specifications 4 Current Specifications 4 Resistance Specifications 4 Continuity Specifications 4 Capacitance Specifications 4 Temperature Specifications 5 Hertz Specification 5 Physical and Environment Characteristics 6 Certification and Compliance 6 Basic Maintenance 6 Inserting and Removing the Battery
Introduction WARNING To avoid shock or injury, do not perform the verification tests or calibration procedures described in the manual unless you are qualified to do so. The information provided in this document is for the use of qualified personnel only. CAUTION The 2238-20 and 2239-20 contain parts that can be damaged by static discharge. Follow the standard practices for handling static sensitive devices. Precautions and Safety Information Use the Meter only as described in the Operator’s Manual.
SAFETY Review the following safety precautions to avoid injury and prevent damage to this product or products connected to it. To avoid potential hazards, use the product only as specified. WARNING: These statements identify conditions or practices that could result in personal injury or loss of life. CAUTION: These statements identify conditions or practices that could result in damage to the equipment or other property.
SPECIFICATIONS All specifications are warranted unless noted typical and apply to the 2238-20 and 2239-20. Stated accuracies are at 23°C±5°C at than 80% relative humidity and without the battery indicator displayed.
Measurement Specifications Accuracy is ±(% reading + number of digits) at 23°C ± 5°C, less than 80% R.H. Temperature coefficient: 0.1 * (Specified accuracy)/°C, <18°C, >28°C (1) DC Voltage Range Resolution 600V 0.1V 1000V 1V Accuracy ±(2% reading + 2 digits) (2) AC Voltage Range Resolution Accuracy (Sine Wave) 600V 0.1V ±(1.2% reading + 5 digits) (50/60 Hz) 1000V 1V ±(1.8% reading + 5 digits) (45~500 Hz) (3) DC μ A (2238-20 only) Range Resolution Accuracy 600.0μA 0.1μA ±(1.
(8) Temperature (2238-20) Range Resolution Accuracy ±1% ±10dgt ±1% ±18dgt 0.1°C 0.1ºF -40ºC ~ 538ºC -40ºF ~ 1000ºF (9) Hertz (2239-20) Range Resolution ACA: 600 Hz, 6 kHz ACV: 600 Hz, 6 kHz, 60 kHz 0.1 Hz, 1 Hz, 10 Hz Accuracy ±1%rdg ±1dgt Sensitivity: Amps 5A RMS; Volts - 30V RMS Minimum Hz measurement is 10Hz (10) Volt Sense Volt Sense Light should be on at 90V @ 1 inch (2.54 cm). (11) Thermocouple K Type Class II Thermocouple with standard dual banana jack. Measurement Range: -40.0°C ~ 260.
Physical and Environmental Characteristics Environmental characteristics Description Temperature operating -10 to +50°C Non-Operating -40 to +60°C Humidity (operating) <80% R.H. Altitude Operating 2,000M (6560 ft.) Vibration & shock Operating MIL-PRF-28800F for Class 2 Instrument Indoor Use Certifications and compliances Safety Designed to IEC61010-1, UL61010-1 and CSA specifications Input rating Category Ill 1000V. CAT IV : The source of the Low-Voltage installation.
Maintenance - continued WARNING To reduce the risk of personal injury and damage, never immerse your tool, battery pack or charger in liquid or allow a liquid to flow inside them. Maintaining Tool Keep your tool, battery pack and charger in good repair by adopting a regular maintenance program. After six months to one year, depending on use, return the tool, battery pack and charger to a MILWAUKEE service facility for service.
Calibration Procedures: 2238-20 Mode：M2238 True RMS Clamp Meter for HVAC/R Environmental：Temperature 18°C ~ 28°C Humidity：<70%RH C a libra tion e quipme nt：1 . FLUKE 5520A 2 . FLUKE 5500A/COIL(50TURNS) 4 . T e mpe ra ture C onne c tor Switch Position 3 . M 2 2 3 8 Fixture 5 . Screw adjustment probe Step Function Input Signal Adjustment Adjust Range 1. 2. 3. DCV Adjustment 300VDC ACV Zero Adjustment Open Circuit 299.9~300.1V 300V/60Hz (sine wave) VR1 VR2 VR3 ACV Adjustment 4.
Calibration Procedures 2238-20 - continued symbol to indicate the software forced zero is disabled and the actual reading is now displayed so the operator can adjust the real AD zero. Wait around 1 minute the reading will stop falling and the operator can adjust VR2 to null the number. Check the adjusting result stay at zero and turn the unit off to finish the adjusting. (2) Turn the unit off. Press and hold “ dial to range “ + ” keys and turn the function ” then push “°F/°C” button within 2 sec.
Calibration Procedures: 2239-20 Mode：M2239 True RMS AC/ DC clamp meter Environmental：Temperature 18°C ~ 28°C Humidity：<70%RH C alibration equipment： ：1 . FLUKE 5520A 2 . FLUKE 5500A/COIL(50TURNS) 3 . M 2 2 3 8 F ix ture Switch Position 4 . Screw adjustment probe Step Function 1. 2. 3. 4. 5. DCV Adjustment 300VDC ACV Zero Adjustment Open Circuit ACV Adjustment 300V/60Hz (sine wave) ACA BalanceAdjustment DCA ZeroAdjustment ACA 60A Adjustment 6. 7. ACA 600AAdjustment 8.
Calibration Procedures 2239-20 - continued around 1 minute the reading will stop falling and the operator can adjust VR4 to null the number. Check the adjusting result stay at zero and turn the unit off to finish the adjusting. (2) X represents the reading when the wire is at the center of the jaw. (3) Repeat the procedure of getting “INRUSH” reading then adjust VR1 to make the reading within the acceptable range. (4) Turn the unit off.
