Instruction Manual - Davis Instruments
Contents
1. 4 1 3 Receiving Your 4 1 4 Ordering Information 4 PRODUCT FEATURES 5 2 1 Description iiiter ta FERT hah uama 5 2 2 Model K100 Features 6 2 3 Model K110 Features 7 SPECIFICATI0NS 8 3 1 Electrical 8 3 2 Environmental Specifications 9 3 3 Mechanical Specifications 9 3 4 Safety Specifications 9 3 5 Typical Frequency Response 10 OPERATION J u u u uu uuu u uu U u Q uu uQ 11 4 1 Making Measurements with the K100 K110 11 4 2 Indicator Lights Green and Red LEDs 11 4 3 Model K100 Operation 12 DC Current Measurement Example K100 12 DC Current Measurement Example Current Reversed 12 Two Wire Sum of Currents Example K100 13 Two Wire Current D2. DC AC 1 0 0 350 1 mVlmA OFF DC AC MicroProbi Model 100 INSTRUMENTS Gy AEMC User Manual AEMC Statement of Compliance Chauvin Arnoux Inc d b a Instruments certifies that this instrument has been calibrated using standards and instruments traceable to international standards We guarantee that at the time of shipping your instrument has met its published specifications An NIST traceable certificate may be requested at the time of purchase or obtained by returning the instrument to our repair and calibration facility for a nominal charge The recommended calibration interval for this instrument is 12 months and begins on the date of receipt by the customer For recalibration please use our Calibration services Refer to our repair and calibration section at www aemc com Serial Catalog 1200 67 2111 73 Model K100 K110 Please fill in the appropriate date as indicated Date Received Date Calibration Due Chauvin Arnoux Inc d b a AEMC Instruments INSTRUMENTS www aemc com 2 Table of Gontents INTR0DUCTI0N 3 1 1 International Electrical 3 1 2 Definition of Measurement Categories
3. DC AC MicroProbe Models K100 and K110 11 43 Model K100 0peration Examples DC Current Measurement Example K100 e Conductor carrying 20 0mADc in the direction of the arrow Voltmeter placed in DC Volts mode Voltmeter displays 20 0mV lt _ lt 20 mA DC Figure 5 DC Current Measurement Example Current Reversed K100 e Conductor carrying 20 0 in opposite direction of arrow Voltmeter placed in DC Volts mode Voltmeter displays 20 0mV 20 mA DC Figure 6 12 DC AC MicroProbe Models K100 and 110 Two Wire Sum of Currents Example K100 Two conductors in probe aperture note orientations Voltmeter placed in DC Volts mode Voltmeter displays 18 0mV 7mA DC 11 mA DC Figure 7 Two Wire Current Differential Example k100 Two conductors in probe aperture note orientations Voltmeter placed in DC Volts mode Voltmeter displays 4 0mV 7 mA DC 11 mA DC Figure 8 DC AC MicroProbe Models K100 and K110 13 Oscilloscope Measurement Example K100 e Conductor carrying a 2A peak AC waveform Model K100 connected to oscilloscope To Oscilloscope 20 20V Current Waveform Oscilloscope Output 0 0 C EE Figure 9 Maximum Step Discontinuity Example 100 e Conductor carrying non sinusoidal AC Model K100 connected to oscilloscope Maximum allowable
4. Electrical Specifications DC AC MicroProbe Models K100 and K110 5 22 Model K100 Features 1mV mA ON Oo QO N OFF DC AC MicroProb AEMC Model k100 Figure 1 Positive Red banana plug Negative Black banana plug Power ON indicator green LED OVERLOAD indicator red LED Power switch Zero adjust knob push in and turn to zero Probe window aperture Probe handle DC AC MicroProbe Models K100 and K110 23 Model K110 Features 10 mV mA OFF DC AC MicroProbi AEMC Model K10 Figure 2 Positive Red banana plug Negative Black banana plug Power ON indicator green LED OVERLOAD indicator red LED Power switch Zero adjust knob push in and turn to zero Probe window aperture Probe handle ON Oo Cc N DC AC MicroProbe Models K100 and K110 3 SPECIFICATIONS 3 1 Electrical Specifications Model K100 Current Range 0 to 4 5ADC 0 to 3 Arms sinusoidal Output Vout 1mV mA Resolution DC 50pA typical AC 100pA typical Accuracy DC 1 reading 200 AC 2 reading 200 Output Noise lt 100yV DC to 3kHz Frequency Response DC to 2kHz 3dB sine Zero Adjust 25mA Model K110 Current Range 0 to 450mA DC 0 to 300mA rms Outpu
5. act high sensitivity current probe Unlike other instru ments the Model K100 exhibits a wide dynamic operating range which extends from below 100 to 4 5A peak from DC to 2 0kHz without the need for ranging The K110 has an operating range of 100pA to 450mA Peak from DC to 1500Hz Models K100 and K110 are designed to be operated in conjunction with a digital multimeter oscilloscope or recording device The MicroProbe out puts the current measured in the form of a voltage that is the image of the current in shape and amplitude The Model K100 outputs 1mV per mA of measured current The Model K110 outputs 10mV per mA of measured current To take advantage of the Model K100 high sensitivity best results are obtained through 4 1 2 digit or more DMM with a relative zero func tion The Model K110 was designed to provide the operator with enhanced low current linearity and accuracy but is limited to 450mA Peak current The Model K100 K110 always outputs a signal proportional to the total current AC DC in the conductor under test This has proven to be the most versatile signal output format and allows the user to isolate and measure DC and AC components of measured current separately if so desired Typical applications include 4 to 20mA loop measurements auto motive current applications benchtop electronic current consumption in circuits and other applications requiring very low current measurements in crowded areas See
6. and large high cur rent transients may cause varying degrees of residual readings If in doubt of a particular reading remove the probe from the con ductor under test and check to see that the display device returns zero If not it will be necessary to rezero the Model K100 K110 When using the Model K100 K110 to measure AC currents keep in mind the maximum current ratings and the frequency response curves shown in the electrical specifications section Dynamic currents that contain large step discontinuities and or frequency constituents near or beyond the measurement passband are subject to measurements errors and waveform distortion oscil loscope display If the red LED comes on during measurement the MicroProbe s output signal may be in error Many DVMs provide null relative measurement capability A DVM placed in the null mode displays the difference between a stored null value and the input signal e e You can use a DVM s null function in place of the external DC zero control to cancel any DC offset from the K100 K110 The DVM null function should be enabled with the probe removed from the conductor immediately before measurement You can use a DVM s null function to display changes in mea sured current from a fixed constant level In this application the DVM null function is enabled with the probe connected to the con ductor When making null relative measurements the probe aperture current not displayed curr
7. ent must not exceed the maximum ratings set forth in the specifications section 18 DC AC MicroProbe Models K100 and K110 4 6 Residual Readings Following Severe Overloads Large short circuit and transient currents outside the operating range of the Model K100 K110 may cause large residual readings In extreme cases the Model K100 K110 will not zero If this happens Remove the probe from the test conductor Open the probe and release allowing the jaws to snap back Repeat this step several times Rezero the instrument before making successive measurements DC AC MicroProbe Models K100 and K110 19 CHAPTER 5 MAINTENANCE 5 1 A Warning Please make sure that you have already read and fully understand the WARNING section on page 2 e To avoid electrical shock do not attempt to perform any servicing unless you are qualified to do so To avoid electrical shock and or damage to the instrument do not get water or other foreign agents into the case Turn the Model K100 K110 OFF and disconnect the unit from all circuits before opening the case 5 2 Battery Installation Your Model K100 K110 has been shipped with a new 9V battery installed To replace the battery Remove probe from any conductor and place it away from any active conductors circuitry etc Unplug electronic module from display device e g DMM oscilloscope Remove the screws from the bottom cover of the electronic module Replace battery w
8. gy circuits CAT Il For measurements performed on circuits directly connected to the electrical distribution system Examples are measurements on household appliances or portable tools CAT Ill For measurements performed in the building installation at the distribution level such as on hardwired equipment in fixed installation and circuit breakers CAT IV For measurements performed at the primary electrical supply lt 1000V such as on primary overcurrent protection devices ripple control units or meters 1 3 Receiving Your Shipment Upon receiving your shipment make sure that the contents are consistent with the packing list Notify your distributor of any missing items If the equipment appears to be damaged file a claim immediately with the car rier and notify your distributor at once giving a detailed description of any damage 1 4 Ordering Information DC AC MicroProbe Model 100 Cat 1200 67 DC AC MicroProbe Model 110 Cat 2111 73 Both models include an electronic plug in module with an attached current probe 9V battery and user manual Order Accessories and Replacement Parts Directly Online Check our Storefront at www aemc comv store for availability 4 DC AC MicroProbe Models K100 and K110 CHAPTER 2 PRODUCT FEATURES 21 Description Model K100 and Model K110 are low current measurement instruments that feature a comp
9. ifferential Example 100 13 Oscilloscope Measurement Example K100 14 Maximum Step Discontinuity Example K100 14 4 4 Model K110 Operation Examples 15 Measuring the DC Component of an AC DC Waveform 15 Measuring the AC Component of an AC DC Waveform 15 Oscilloscope Measurement Example K110 16 4 5 Tips For Making Precise Measurements 16 4 6 Residual Readings Following Severe Overloads 19 5 MAINTENANCE 20 5 1 Warning ai e vs 20 5 2 Battery Installation L 20 533 Cleaning nuna muqu cite atari tete 21 Repair and 22 Technical and Sales Assistance 22 Limited Warranty hel 23 Waranty r RepalfSu uran n aie bre 23 CHAPTER 1 INTRODUCTION N WARNING N These safety warnings are provided to ensure the safety of personnel and proper operation of the instrument Read the instruction manual completely and follow all the safety information before attempting to use or service this instrument Use caution on any circuit Potentially high voltages and cur rents may be present and may pose a shock haza
10. ith a new 9V alkaline type Replace bottom cover and re attach with screws SCREWS BATTERY CLIP 20 Figure 16 DC AC MicroProbe Models K100 and K110 53 Cleaning To ensure optimum performance it is important to keep the probe jaw mating surfaces clean at all times Failure to do so may result in increased earth s field susceptibility and overall errors in readings The following is the recommended procedure for cleaning the probe sensor 1 Apply a few drops of isopropyl alcohol to an ordinary sheet of white photocopy paper 2 Open probe to expose the mating surfaces of the sensor and insert the sheet of paper into the jaws Allow the jaws to close 3 With the jaws closed pull free the end of the paper through the jaws until it releases 4 Repeat step 3 several times using a new dry section of paper each time 5 Open probe and inspect mating surfaces They should be free of dust particles or any other contamination Otherwise repeat the cleaning process starting again at step 1 ma Figure 17 DC AC MicroProbe Models K100 and K110 21 Repair and Calibration To ensure that your instrument meets factory specifications we recommend that it be scheduled back
11. l loscope Note that the module output is 1mV mA for Model K100 and 10mV A for model K110 Turn displaying device power ON Turn on the Model K100 K110 the green LED should be ON and the red LED OFF With the probe disconnected from test samples no conductor in probe jaw window adjust the zero control push in the knob and turn to read zero volts on the displaying device In the unlikely event where the zero point is unobtainable refer to Residual Readings Following Severe Overloads S 4 6 the Model K100 K110 probe may be tem porarily magnetized Clamp the probe around the conductor to be tested The displaying device should now display the measured conductor current In DC a positive reading indicates current flowing in the direction of the arrow on the probe negative reading indicates current flow in the opposite direction of the arrow 4 2 Indicator Lights Green and Red LEDs The Green LED indicates that the Model K100 K110 is ON and that the battery is good The Green LED will not light under low battery condi tions Replace the 9V battery if the green LED is not lit The Red LED indicates a momentary or continuous overload of the instrument Readings taken while the Red LED is ON or FLASHING should be considered inaccurate Momentary or continuous currents exceeding 4 7A for Model K100 and 470mA for Model K110 and dynamic currents with large step discontinuities will cause the red LED to turn ON
12. m Conductor Diameter 3 16 0 180 4 5mm Cable Length 5 ft 1 5m 3 4 Safety Specifications 5j al Working Voltage EN61010 1 300V CAT II CE mark for Electromagnetic Compatibility Immunity EN 50082 1 IEC 1000 4 3 aptitude criteria A DC 15mV 0 AC 60Hz 2dB from 10mA to 4 5A Emmissivity EN 50081 1 negligible Drop Test 1m per IEC 1010 Shocks 100G per IEC 68 2 27 Vibrations IEC 529 Protection Index IP 40 per IEC 529 Electromagnetic Compatibility EN 50082 1 class A EN 50081 1 All specifications are subject to change without notice DC AC MicroProbe Models K100 and K110 35 Typical Frequency Response Model K100 Frequency Hz 1000 1200 1400 1600 1800 2000 50 200 400 600 800 2200 3 0A Decibels dB m o Figure 3 Model K110 Frequency Hz 200 400 600 1000 1200 1400 1600 w 300 mA RMS Decibels dB m Figure 4 10 DC AC MicroProbe Models 100 and K110 4 OPERATION 41 Making Measurements with the K100 K110 e Remove any conductor from within the probe jaws Plug the electronic module into the displaying device e g DMM oscil loscope Note the polarity of the module output banana plugs red positive black negative Select the appropriate range on displaying device e g DMM osci
13. rd Read the Safety Specifications section prior to using the Model K100 K110 Never exceed the maximum voltage ratings given Safety is the responsibility of the operator NEVER open the back of the instrument while connected to any circuit or input ALWAYS connect the Model K100 K110 adapter to the display device before clamping the probe onto the sample under test ALWAYS inspect the instrument probe probe cable and output terminals prior to use Replace any defective parts immediately NEVER use the Model K100 K110 on electrical conductors rated above 300V CAT II EN61010 1 1 1 International Electrical Symbols E This symbol signifies that the instrument is protected by double or reinforced insulation Use only specified replacement parts when servicing the instrument A This symbol on the instrument indicates a WARNING and that the operator must refer to the user manual for instructions before operating the instrument In this manual the symbol preceding instructions indicates that if the instructions are not followed bodily injury installation sample and product damage may result Risk of electric shock voltage at the parts marked with this symbol may be dangerous DC AC MicroProbe Models K100 and K110 3 1 2 Definition of Measurement Categories I For measurements on circuits not directly connected to the AC supply wall outlet such as protected secondaries signal level and limited ener
14. step discontinuity 2A Note Step Discontinuities To Oscilloscope 20V fN Current Waveform 2A Oscilloscope Output 2A e _ Figure 10 14 DC AC MicroProbe Models K100 and K110 44 Model K110 Operation Examples Measuring the DC Component of an AC DC Waveform K110 e Conductor carrying 20 0mApc 15 0 Voltmeter placed DC Volts mode Voltmeter displays 200 0mV 15 mA AC 20 mA DC Figure 11 Measuring the AC Component of an AC DC Waveform k110 e Conductor carrying 20 0mApc 15 0mAAC Voltmeter placed in AC Volts mode Voltmeter displays 150 0mV 15 mA AC T 20 mA DC Figure 12 DC AC MicroProbe Models K100 and K110 15 Oscilloscope Measurement Example K110 e Conductor carrying a 0 2A peak AC waveform Model K110 connected to oscilloscope To Oscilloscope 20v 4 5 Current Waveform Oscilloscope Output Qe 0 2A UU Figure 13 Tips For Making Precise Measurements The Model K100 K110 is capable of making measurements of DC and low frequency currents over a wide range Here are some key considerations for getting the most accuracy from your displaying instrument 16 When using the Model K100 K110 with a meter it is important to select the range that provides the best resolution Failure to do
15. strument postage or shipment pre paid to Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Caution To protect yourself against in transit loss we recommend you insure your returned material NOTE You must obtain a CSA before returning any instrument DC AC MicroProbe Models K100 and K110 23 Notes EJAEMC INSTRUMENTS 07 10 99 MAN 100091 v11 Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 603 749 6434 Fax 603 742 2346 www aemc com
16. t Vout 10 mV mA Resolution DC 50pA typical AC 100pA typical Accuracy DC 0 5 reading 150 AC 0 8 reading 200 Output Noise 100yV DC to 3kHz Frequency Response DC to 1 5kHz 3dB sine Zero Adjust 25 Rise Time lt 2005 10 to 90 Vout Fall Time lt 20035 90 to 10 Vout Output Impedance 2000 Probe Inductance lt 1uH Influence of Adjacent Conductor lt 50uA A K100 lt 100 K110 Influence of Earth s Field lt 120 null to maximum Overload LED Red Indicates momentary or continuous overload Power LED Green Indicates power ON and good battery LED Green ON between 6 5 to 10V Power Source 9V alkaline NEDA 1604 6LR61 or IEC 6LF22 Battery life 20H approx with alkaline battery Reference Conditions 23 C 3 20 to 75 RH battery voltage 9V 0 1V earth s magnetic field lt 40 A m absence of AC fields input impedance of display device 2 1MQ 100 pF DC or sinusoidal AC current 45 to 65Hz 8 DC AC MicroProbe Models K100 and K110 32 Environmental Specifications Operating Temperature 14 to 131 F 10 to 55 C Storage Temperature 40 to 176 F 40 to 80 C Humidity lt 95 lt 35 C 75 55 C 33 Mechanical Specifications Dimensions Probe 4 4 x 0 6 x 1 0 111 x 15 x 25mm Dimensions Electronic Module 4 9 x 2 5 x 1 1 124 x 64 x 28mm Weight 9 oz 250g Connectors Two 4mm banana plugs standard 3 4 19mm spacing Maximu
17. this may result in measurement errors The examples shown on the next page use an ordinary 3 1 2 digit DMM with the Models K100 K110 to measure 16 7mApc DC AC MicroProbe Models K100 and K110 Resolution 10 Display Error 19 8 Model K100 Resolution 1 Display Error 1 8 Resolution 10mV Display Error 1 8 aV 52 D 9 Figure 14 Model 110 Resolution 1 Display Error 0 Figure 15 DC AC MicroProbe Models K100 and K110 Resolution 100pV Display Error 0 16 7 Resolution 100yV Display Error 0 151 0 mv 2V 3 lt o S 0 D 17 Always zero the Model K100 K110 prior to making a measure ment See S4 1 for procedure Make sure that probe jaw mating surfaces are free of dust and contamination Contaminants cause air gaps between sensor halves making the Model K100 K110 susceptible to external magnetic fields which can contribute to measurement errors See S5 3 for cleaning procedure Do not allow probe jaws to abruptly snap closed from the open state This can lead to residual readings If this happens the Model K100 K110 will need to be rezeroed Beware of short circuit currents Large in rush currents which can occur when power is first applied in a circuit
18. to our factory Service Center at one year intervals for recalibration or as required by other standards or internal procedures For instrument repair and calibration You must contact our Service Center for a Customer Service Authorization Number CSA This will ensure that when your instrument arrives it will be tracked and processed promptly Please write the CSA on the outside of the shipping container If the instrument is returned for calibration we need to know if you want a standard calibration or a calibration traceable to N I S T Includes calibration certificate plus recorded calibration data Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to 1 5 are available NOTE You must obtain a CSA before returning any instrument Technical and Sales Assistance If you are experiencing any technical problems or require any assistance with the proper operation or application of your instrument please call mail fax or e mail our technical support team Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Boulevard Foxborough MA 02035 USA Phone 800 343 1391 508 698 2115 Fax 508 698 2118 E mail techsupport aemc com ww
19. w aemc com NOTE Do not ship Instruments to our Foxborough MA address 22 DC AC MicroProbe Models K100 and K110 Limited Warranty The Models K100 and K110 are warranted to the owner for a period of one year from the date of original purchase against defects in manufacture This limited warranty is given by AEMC Instruments not by the distributor from whom it was purchased This warranty is void if the unit has been tampered with abused or if the defect is related to service not performed by AEMC Instruments For full and detailed warranty coverage please read the Warranty Coverage Information which is attached to the Warranty Registration Card if enclosed or is available at www aemc com Please keep the Warranty Coverage Information with your records What AEMC Instruments will do Ifa malfunction occurs within the one year period you may return the instrument to us for repair provided we have your warranty registration information on file or a proof of purchase AEMC Instruments will at its option repair or replace the faulty material REGISTER ONLINE AT www aemc com Warranty Repairs What you must do to return an Instrument for Warranty Repair First request a Customer Service Authorization Number CSA by phone or by fax from our Service Department see address below then return the instrument along with the signed CSA Form Please write the CSA on the outside of the shipping container Return the in
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