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Nieaf Instruments NI349PR Manual

Ac / dc power clamp multimeter
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AC / DC POWER CLAMP MULTIMETER NI349PR
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Summary of Contents for Nieaf Instruments NI349PR

  • Page 1 AC / DC POWER CLAMP MULTIMETER NI349PR Manual...
  • Page 2 1. AC+DC 400/1200KW, auto-range 2. DC 2500A, AC 2100A, and AC/DC 600V. φ 55 mm diameter jaw. 4. One touch zero for DCA,DCW adjustment. 5. Auto-range for A, V, W, and temperature ( or ) 6. Large 3 3/4 digits LCD 6.
  • Page 3 INTRODUCTION 1-1 Unpacking and Inspection Upon removing your new Digital Clamp Multimeter from its packing, you should have the following items: 1. Digital Clamp Multimeter. 2. Test lead set (one black, one red). 3. Carrying case. 4. Instruction manual. 5. Battery. 1-2 Meter Safety Terms as Marked on Equipment ATTENTION —...
  • Page 4 Symbols in this Manual This symbol indicates where cautionary or other information is found in the manual. Battery 1-3 Front Panel Refer to Figure 1 and the following numbered steps to familiarize yourself with the meter’s front panel controls and connectors. Transformer Jaw This is used to pick up current signal.
  • Page 5 Max/Min Hold Symbol Once the max/min button is pressed, either MAX or MIN shall be displayed on LCD Units Symbols Ω Once a function is selected, corresponding unit (V, , A, or Hz) shall be displayed on LCD. This is a 3 3/4 digit Liquid Crystal Display with maximum indication of 3999. Function symbols, units, bargraph, sign, decimal points, low battery symbols, max/min symbols, and zero symbol are included.
  • Page 6 DCA/W ZERO button This button is used for DCA ZERO function. To zero the DCA residual value, press this button until the LCD reading show zero value. If DCA ZERO button is used to zero DCA value, the clamp meter is still in auto-range mode.
  • Page 7 Figure 1...

  • Page 8: Specifications

    SPECIFICATIONS 2-1 General Specifications Φ Conductor Size : Cable 55mm. (approx.) : Bus Bar 65mm(D) x 24mm(W) Battery Type : 9V Display : 3 3/4 LCD with 40 seg. bargraph Range Selection : Auto and manual Overload Indication : left most digit blinks Power Consumption : 12 mA (approx.) Low battery Indication...
  • Page 9 2-2 Environmental Conditions Indoor use. Maximum Altitude : 2000 Meter. Installation Category : EN 61010-1 CAT. III 600V Pollution Degree ° ° Operating Temperature C to 50 Operating Humidity : less than 85% relative ° ° Storage Temperature : -20 C to 60 Storage Humidity : less than 75% relative...
  • Page 10 2-2 Electrical Specifications Accuracy is ± (% reading + number of digits) at 23°C ± 5°C at less than 80% R.H. (1) AC Voltage : Auto-ranging Accuracy (of reading) Range Resolution Input Impedance 50/60 Hz 40 - 1KHz -------- 1 --------- 1 --------- 1 400mV...
  • Page 11 (2) DC Voltage : Auto-ranging Range Resolution Accuracy(of rdg) Input Impedance ±1.5%±3dgts Ω 400mV 0.1mV ±1.5%±3dgts Ω 0.001V ±1.5%±3dgts Ω 0.01V ±1.5%±3dgts Ω 400V 0.1V ±1.5%±3dgts Ω 600V Overload Protection 800VAC for all range...
  • Page 12 (3) Resistance Auto-ranging Range Resolution Accuracy Beeping OL Protection Ω Ω ±1.0% rdg±2dgts Ω AC 600V 40-400 < 40.0 open voltage 0.4V (4) Continuity Built-in buzzer sound when measured resistance is less than 40Ω and sound off when measured resistance is more than >...
  • Page 13 (5) DCA : Auto-ranging Range Resolution Accuracy (of rdg) Overload Protection ±1.5%±3dgts 400A 0.1A DC 3000A ±1.5%±3dgts 0-2000A DC 3000A ±2.0%±3dgts 2000-2500A DC 3000A (6) ACA : Auto-ranging Accuracy (of rdg) Overload Protection Range Resolution 50/60 Hz 40 - 1KHz ±1.5%±5dgts ±2.0%±5dgts 400A...
  • Page 14 (8) Current analog output Range Output Accuracy Overload Protection 0 - 400A 1mV/A ±2.5% ±0.5A 600V AC 400 - 2100A 1mV/A ±2.5% ± 5A 600V AC (9) AC + DC power 250V max., Auto-range and Manual Accuracy Overload Protection Range Resolution (of reading) ±2.5%±5dgts...
  • Page 15 (11) Temperature Range Resolution Accuracy Overload Protection -50 – 400 °C 0.1 °C ±1.% ±2 °C 600VAC -400 – 1000 °C 1 °C ±1.% ±2 °C 600VAC -50 – 400 °C 0.1 °C ±1.% ±3 °C 600VAC -400 – 1000 °C 1 °C ±1.% ±3 °C 600VAC...

  • Page 16: Operation

    OPERATION This instrument has been designed and tested in accordance with NEN EN Publication 61010, Safety Requirements for Electronic Measuring Apparatus and has been supplied in a safe condition. This instruction manual contains some Information and warnings which have to be followed by the user to ensure safe operation and to retain the instrument in safe condition.
  • Page 17 5. Do not replace battery with power on condition. 6. If the unit is not to be used for a long period of time , remove the battery. 7. Do not forget to turn off after use. Maximum rated voltage to earth for voltage measurement terminals is 600V CAT.III THIS INSTRUMENT MUST NOT BE USED ON UNINSULATED CONDUCTORS AT A VOLTAGE GREATER THAN 600V ac/dc.
  • Page 18 3-2 AC Current Measurement...
  • Page 19 a. Set the rotary switch at AC A. b. In AC current measurement, ZERO is not needed. Do not press DC A ZERO button. c. Press the trigger to open the jaw and fully enclose the conductor to be measured. No air gap is allowed between the two half jaws.
  • Page 20 3-3 DC Current Measurement...
  • Page 21 a. Set the rotary switch at DC A. b. Push and hold the DC A ZERO button until the reading shows zero. c. Press the trigger to open the jaw and fully enclose the conductor to be measured. No air gap is allowed between the two half jaws.
  • Page 22 3-4 Connecting to an Oscilloscope or a Datalogger Set the rotary switch at AC A or DC A Analog signal is output from the bottom terminals at the same time. The output is proportional to the current measured (1mV/A). The red terminal is the positive while the black is the negative of the signal. Connect these two terminals to an oscilloscope or a datalogger, users can observe the current wave form or do the long term data recording.
  • Page 23 WARNING Maximum input for DC V is 1000, and for AC V is 750. Do not attempt to take any voltage measurement that exceeds the limits. Exceeding the limits could cause electrical shock and damage to the clamp meter. 3-5-1.DC Voltage a.
  • Page 24 3-6 AC+DC Watt Measurement a. Set the rotary switch at KW/600V or KW/250V. b. Insert the test leads into the input jack. c. Connect the test probes of the test leads to the circuit to be measured (COM to ground, V to active line). d.
  • Page 25 3.9 Change from Auto-range Mode to Manual Mode If users want to select certain range for specific measurement, they can press the RANGE button to select appropriate range. To return to auto-range, press and hold the RANGE button for 2 seconds. 3.10 Relative Reading Measurements The REL button can be used to make a relative measurement.

  • Page 26: Maintenance

    MAINTENANCE WARNING : TO AVOID ELECTRICAL SHOCK OR DAMAGE REMOVE TEST LEADS BEFORE OPENING THE COVER. 4-1 General Maintenance Servicing not covered in this manual should only be performed by qualified personnel. Repairs should only be performed by qualified personnel. Periodically wipe the case with a damp cloth and detergent;...
  • Page 27 4-2 Battery Installation or Replacement...
  • Page 28 When the low battery symbol is displayed on the LCD, replace the old battery with new battery. a.Turn the power off and remove the test leads from the clamp meter. b.Remove the screws of the bottom case. c.Lift and remove the bottom case. d.Remove the old battery.
  • Page 29 Nieaf-Smitt B.V. Vrieslantlaan 6, 3526 AA, Utrecht P.O. Box 7023, 3502 KA, Utrecht, The Netherlands Tel.: +31 (0) 30 288 13 11 Fax: +31 (0) 30 289 88 16 E-mail: sales@nieaf-smitt.nl Internet: http://www.nieaf-smitt.nl http://www.nieaf-instruments.com...