Textron GREENLEE GT-220 Instruction Manual
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Textron GREENLEE GT-220 Instruction Manual

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INSTRUCTION MANUAL
GT-220 • GT-540
Electrical Testers
52020568
Read and understand all of the instructions
and safety information in this manual before
operating or servicing this tool.
© 2005 Greenlee Textron Inc.
English ............. 1–20
Français ......... 21–40
Italiano ........... 41–60
Deutsch .......... 61–80
Español ......... 81–100
Português ..... 101–120
Nederlands ... 121–140
3/05

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Summary of Contents for Textron GREENLEE GT-220

  • Page 1 Español ..81–100 Português ..101–120 Nederlands ... 121–140 GT-220 • GT-540 Electrical Testers Read and understand all of the instructions and safety information in this manual before operating or servicing this tool. 52020568 © 2005 Greenlee Textron Inc. 3/05...

  • Page 2: Purpose Of This Manual

    All specifications are nominal and may change as design improvements occur. Greenlee Textron shall not be liable for damages resulting from misapplication or misuse of its products. ® Registered: The color green for electrical test instruments is a registered trademark of Greenlee Textron.

  • Page 3: Important Safety Information

    GT-220 • GT-540 Important Safety Information SAFETY ALERT SYMBOL This symbol is used to call your attention to hazards or unsafe practices which could result in an injury or property damage. The signal word, defined below, indicates the severity of the hazard. The message after the signal word provides information for preventing or avoiding the hazard.
  • Page 4 Important Safety Information Electric shock hazard: Contact with live circuits could result in severe injury or death. Electric shock and fire hazard: • Do not expose this unit to rain or moisture. • Do not use the unit if it is wet or damaged. •...
  • Page 5 GT-220 • GT-540 Important Safety Information Electric shock hazard: • Do not operate with the case or battery cover open. • Before opening the case or battery cover, remove the test leads from the circuit and shut off the unit. Failure to observe these warnings could result in severe injury or death.
  • Page 6 Important Safety Information Electric shock hazard: Do not change the measurement function while the test leads are connected to a component or circuit. Failure to observe this precaution may result in injury and can damage the unit. Electric shock hazard: •...
  • Page 7 GT-220 • GT-540 Identification 1. Display 2. Feature buttons 3. Selector 4. Positive (+) input terminal for all measurements 5. Negative, common (COM), or ground input terminal for all measurements Display Icons Automatic ranging is enabled Hold function is enabled AC measurement is selected –...

  • Page 8: Using The Features

    Using the Features • Low Impedance Auto V·Ω Mode In this mode, the tester automatically selects the proper measurement based on the input. – If there is no input, “Auto” appears on the display. – If voltage above approximately 2 volts AC or DC is present, voltage is displayed.

  • Page 9: Operation

    GT-220 • GT-540 Operation Electric shock hazard: Contact with live circuits could result in severe injury or death. Electric shock hazard: Do not use the tester to measure voltages in circuits that could be damaged by the Auto V•Ω mode’s low input impedance (approximately 4 kΩ).
  • Page 10 Operation (cont’d) Settings Table These icons Set the Connect Connect will appear To measure selector to on the the red the black this value this symbol display lead to lead to The following settings apply to the GT-220 and GT-540: Auto select AC volts, Auto V •...

  • Page 11: Typical Measurements

    GT-220 • GT-540 Typical Measurements Voltage Measurement Note: GT-540 can also use the selector setting to measure voltage. Resistance Measurement...
  • Page 12 Typical Measurements Continuity Check Note: GT-540 can also use the selector setting to check continuity. Electric Field Detection...
  • Page 13 GT-220 • GT-540 Typical Measurements Capacitance Measurement (GT-540 only) Diode Measurement (GT-540 only) Reverse Bias Forward Bias...
  • Page 14 Accuracy Refer to “Specifications” for operating conditions and temperature coefficient. Accuracy is specified as follows: ± (a percentage of the reading + a fixed amount) at 23 °C ± 5 °C (73 °F ± 9 °F), less than 75% relative humidity. DCV (Auto V•Ω...
  • Page 15 GT-220 • GT-540 Accuracy (cont’d) Wireless Electric Field Detection (EF) Typical Voltage Bar Graph Indication* Frequency Range 15 V to 50 V • 30 V to 70 V • • 50 V to 100 V • • • 50 Hz to 60 Hz 70 V to 140 V •...
  • Page 16 Accuracy (cont’d) 600 Ohm with Beeper (GT-540 only) Range Accuracy 600.0 Ω ± (2.0% + 0.6 Ω)* * ± (2.0% + 3.6 Ω) below 120 Ω Beeper response time: 100 µs Beeper on: R < 50 Ω typical; 250 Ω max Open circuit voltage: 0.4 Vdc typical Diode Test with Beeper (GT-540 only) Range: 1.000 V...

  • Page 17: Specifications

    GT-220 • GT-540 Specifications Display: 6000-count LCD Polarity: Automatic Display Update Rate: 5 per second Temperature Coefficient: Nominal 0.15 x (specified accuracy) per °C below 18 °C or above 28 °C Intelligent Automatic Power Off: After 3 minutes of inactivity Noise Rejection:* Common Mode Rejection Ratio: >...
  • Page 18 Specifications (cont’d) * Noise rejection is the ability to reject unwanted signals, or noise. • Normal mode voltages are AC signals that can cause inaccurate DC measurements. NMRR (Normal Mode Rejection Ratio) is a measure of the ability to filter out these signals. •...

  • Page 19: Measurement Categories

    Statement of Conformity Greenlee Textron is certified in accordance with ISO 9000 (2000) for our Quality Management Systems. The instrument enclosed has been checked and/or calibrated using equipment that is traceable to the National Institute for Standards and Technology (NIST).

  • Page 20: Maintenance

    Lifetime Limited Warranty Greenlee Textron Inc. warrants to the original purchaser of these goods for use that these products will be free from defects in workmanship and material for their useful life, excepting normal wear and abuse.

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