Greenlee AM-1000 User manual

999 3793.0 © 2000 Greenlee Textron IM 1468 10/00
AM-1000
ANALOG CLAMP-ON
METER
AMPERÍMETRO CON
PINZA
COMPTEUR A PINCES
ANALOGIQUES
INSTRUCTION MANUAL
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
Read and understand all of the instructions and safety
information in this manual before operating or servicing this tool.
Lea y entienda todas las instrucciones y la información sobre
seguridad que aparecen en este manual, antes de manejar estas
herramientas o darles mantenimiento.
Lire attentivement et bien comprendre toutes les instructions et
les informations sur la sécurité de ce manuel avant d‘utiliser ou de
procéder à l‘entretien de cet outil.

2
Description
The Greenlee AM-1000 Analog Clamp-on Meter is a hand-held testing device with the following
measurement capabilities: AC and DC voltage, AC current, and resistance. The multi-colored
display includes a pointer lock so that you can save a measurement for later viewing.
The teardrop-shaped jaw can accommodate a conductor up to 47 mm (1.85") in diameter.
Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment. This
instruction manual and any markings on the tool provide information for avoiding hazards and
unsafe practices related to the use of this tool. Observe all of the safety information provided.
Purpose
This instruction manual is intended to familiarize all personnel with the safe operation and
maintenance procedures for the Greenlee AM-1000 Analog Clamp-on Meter.
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.
Greenlee and are registered trademarks of Greenlee Textron.
KEEP THIS MANUAL

AM-1000
3
Important Safety Information
Read and understand this material before operating or servicing
this equipment. Failure to understand how to safely operate this
tool can result in an accident causing serious injury or death.
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.
SAFETY ALERT SYMBOL
Immediate hazards which, if not avoided, WILL result in severe injury or death.
Hazards which, if not avoided, COULD result in severe injury or death.
Hazards or unsafe practices which, if not avoided, MAY result in injury or property
damage.
Electric shock hazard:
Contact with live circuits can result in severe injury or death.

4
Important Safety Information
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.
• Use test leads or accessories that are appropriate for the application. See the
category and voltage rating of the test lead or accessory.
• Inspect the test leads before use. They must be clean and dry, and the insulation
must be in good condition.
• Use this unit for the manufacturer’s intended purpose only, as described in this
manual. Any other use can impair the protection provided by the unit.
Failure to observe these warnings can result in severe injury or death.
• Do not operate with the case open.
• Before opening the case, remove the test leads (or jaw) from the circuit and shut off
the unit.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
• Do not apply more than the rated voltage between any two input terminals, or
between any input terminal and earth ground.
• Do not contact the test lead tips or any uninsulated portion of the accessory.
Failure to observe these warnings can result in severe injury or death.

AM-1000
5
Important Safety Information
• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity.
See Specifications.
Failure to observe these precautions can result in injury and can damage the unit.
Do not change the measurement function while the test leads are connected to a
component or circuit.
Failure to observe this precaution can result in injury and can damage the unit.
• Unless measuring voltage, current, or frequency, shut off and lock out power.
Make sure that all capacitors are discharged. Voltage must not be present.
• Set the selector and connect the test leads so that they correspond to the intended
measurement. Incorrect settings or connections can result in a blown fuse.
• Using this unit near equipment that generates electromagnetic interference can
result in unstable or inaccurate readings.
The fuse and fuse jacket are integral parts of the overvoltage protection. When fuse
replacement is necessary, see Specifications for the correct type, size, and capacity.
Using any other type of fuse or omitting the jacket will void the overvoltage protection
rating of the unit.
Failure to observe this warning can result in severe injury or death.

6
Identification
1. Jaw
2. Lever
3. Lock
4. Zero Adjustment Screw
5. Ohms Adjustment Knob
6. Selector
7. Display
8. Volts (V) Input Terminal
9. Common (COM) Input Terminal
10. Resistance (Ω) Input Terminal
Display Icons
11. k Kilo (103)
12. ΩOhms
13. V Volts
14. A Amps
15. Alternating Current
16. Direct Current
Symbols on the Unit
Warning — Read the instruction manual
Warning — Risk of electric shock
Double insulation
Battery
Fuse
1
2
3
4
5
6
11–16
7
10 9 8

AM-1000
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Operation
For highest accuracy:
• Lay the meter flat on a non-metallic surface, away from any magnetic objects.
• Read the scale straight on — not at an angle.
• If possible, select a range that results in a reading in the upper 1/3 of the scale.
1. Unlock the pointer.
2. Zero the meter as follows: With the test leads disconnected, adjust the Zero Adjustment
Screw to set the pointer to the far right side of the scale.
3. Before taking a resistance measurement, set the meter to Ω. Connect the tips of the test
leads together and read the meter. Use the Ohms Adjustment Knob to set the needle to the
far left side of the scale (zero ohms).
Note: If you cannot zero the meter, replace the battery. If you cannot zero the meter after
replacing the battery, send the unit to Greenlee for repair.
4. See the Settings Table. Set the selector to the proper setting and connect the test leads to
the meter. Start with the highest measurement setting.
5. See Typical Measurements for specific measurement instructions.
6. Test the unit on a known functioning circuit or component.
• If the unit does not function as expected on a known functioning circuit, replace the
battery and/or fuse.
• If the unit still does not function as expected, send the unit to Greenlee for repair. See
the address shown under Warranty.
7. Take the reading from the circuit or component to be tested. If the resolution is not
satisfactory, remove the meter from the circuit and change to the next lower range.
Note: Use the pointer Lock to hold the measurement, if desired.
Settings Table
To measure this set the selector to a measurement connect the and connect the
characteristic … range indicated by this symbol … red lead to … black lead to …
AC Current A N/A N/A
AC Voltage V V COM
DC Voltage V V COM
Resistance ΩΩCOM

8
Typical Measurements
Clamp Around Wire
Notes:
• Clamp the jaw around one conductor only.
• Close the jaw completely to ensure
accurate measurement.
• Center the wire in the jaw for highest
accuracy.
Clamp Around Line Splitter
Notes:
• The Greenlee 93-30 Line Splitter is divided.
One section renders amps; the other
renders amps multiplied by 10.
• Close the jaw completely to ensure
accurate measurement.
• Center the line splitter in the jaw for highest
accuracy.

AM-1000
9
Typical Measurements
Voltage Measurement
Resistance Measurement

10
Accuracy
Accuracy Table
Characteristic Accuracy Frequency Range
AC Current ±3% of full scale 50 to 60 Hz
AC Voltage ±3% of full scale 50 to 60 Hz
DC Voltage ±3% of full scale N/A
Resistance ±3% of full scale N/A
Specifications
Display: Analog
Jaw Opening: 47 mm (1.85")
Fuse Rating (ΩTerminal): 0.5 A/250 V fast-acting fuse, interrupting rating 1500 A, 5 x 20 mm
Overvoltage Protection Categories:
V Terminal: Category III, 600 VAC and 150 VDC
COM Terminal: Category III, 600 VAC and 150 VDC
Jaws: Category IV, 600 VAC
Operating Conditions: 0 °C to 50 °C (32 °F to 122 °F), 0 to 80% relative humidity
Indoor use only.
Storage Conditions: –10 °C to 60 °C (14 °F to 140 °F), 0 to 70% relative humidity
Remove battery. Lock pointer.
Elevation: 2000 m (6500') maximum
Pollution Degree: 2
Battery: One AA 1.5-Volt battery (NEDA 15A or IEC LR6)