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Summary of Contents for Hoyt 2940 CL
- Page 1 2940 CL AC CLAMP METER INSTRUCTION MANUAL...
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Page 2: Table Of Contents
Index Page 1. Introduction..........2. Safety notes..........3. Features............4. Speci cations........... 5. Instrument layout........6. Measurement........... 7. Maintenance........... -
Page 3: Introduction
1. Introduction Note This meter has been designed and tested according to CE Safety Requirements for Electronic Measuring Apparatus, EN 61010-1 EN 61010-2-32 and other safety standards. Follow all warnings to ensure safe operation. Warning Read "Safety Notes"(next page) before using the meter. - 1 -... -
Page 4: Safety Notes
2. Safety Notes Read the following safety information carefully before attempting to operate or service the meter. ● Use the meter only as specified in this manual, otherwise the protection provided by the meter may be impaired. ● Always keep hands behind the meter barrier. ●... -
Page 5: Features
● Observe the international electrical symbols listed below. Meter is protected throughout by double insulation or reinforced insulation. Warning ! Risk of electric shock. Caution ! Refer to this manual before using the meter. Alternating current. ▬ … Direct current. Earth (ground). -
Page 6: Speci Cations
4. Specifications AC Current Range Resolution Accuracy 400.0A 0.1A ±(2.0%rdg+5dgt) 1000A (40~200Hz) AC Voltage Range Resolution Accuracy 4.000V ±(1.5%rdg+10mV) (40~500Hz) 40.00V 10mV ±(1.5%rdg+5dgt) 400.0V 100mV (40~500Hz) 750V ● Input impedance : 10MΩ DC Voltage Range Resolution Accuracy 4.000V 40.00V 10mV ±(1.0%rdg+5dgt) 400.0V 100mV... - Page 7 Resistance Range Resolution Accuracy 400.0Ω 0.1Ω 4.000kΩ 1Ω ±(1.5%rdg+3dgt) 40.00kΩ 10Ω 400.0kΩ 100Ω 4.000MΩ 1kΩ 40.00MΩ 10kΩ ±(2.0%rdg+4dgt) Threshold level (beep sound) : less than 25Ω ● Overload protection: ACV 750V rms DCV 1000V Diode & Ohm 250V rms ● Conductor size: 35mm ●...
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Page 8: Instrument Layout
5. Instrument layout (10) 3.999 SELECT HOLD (1) Transformer Jaws (6) Function Switch (2) Flashlight (7) Input Terminal (3) Jaw Trigger (8) SELECT Push Button (4) LCD (9) Flashlight Button (5) Data Hold Button (10) Barrier - 6 -... - Page 9 (1) Transformer Jaws Pick up the conductor within the jaws center. (2) Flashlight For easier viewing in the dark. (3) Jaw Trigger Press to open the jaws. (4) LCD 3¾ digit LCD with maximum reading of 3999. (5) Data Hold Button Freeze the reading for all ranges with "HOLD"...
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Page 10: Measurement
6. Measurement Before proceeding with measurement, read the safety notes. (1) AC current measurement ● Set the function switch to " A" range. ● Press the jaw trigger to open the transformer jaws and clamp onto one conductor only. ● Read the display reading directly. LOAD LOAD LOAD... - Page 11 "SELECT" button twice, until the " " symbol appears. ● Connect the 2940 CL red and black test lead, red test lead should connect Diode (+Anode) black test lead should connect Diode (-Cathode). The display will show the reading.
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Page 12: Maintenance
7. Maintenance (1) Battery Replacement: When low battery warning appears, change a new battery as follows: Disconnect the test leads from the instrument and turn off the power. Unscrew the battery cover and replace with a new battery. (2) Cleaning and storage: WARNING To avoid electrical shock or damage to the meter, do not get water inside the case.
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