AEMC instruments K100 User manual

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DC/AC MicroProbe Models K100 and K110
3
Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
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
Serial #:
Cata
Model #: K100 / K110
ll in the appropriate date as indicated:
Date Received:
Date Calibration Due:
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DC/AC MicroProbe Models K100 and K110
TABLE OF CONTENTS
1.1 PRECAUTIONS FOR USE ....................................................... 7
1.2 RECEIVING YOUR SHIPMENT................................................ 7
1.3 ORDERING INFORMATION ..................................................... 7
8
2.1 DESCRIPTION ........................................................................... 8
2.2 MODEL K100 FEATURES ......................................................... 9
2.3 MODEL K110 FEATURES........................................................ 10
11
3.1 ELECTRICAL SPECIFICATIONS ........................................... 11
3.2 ENVIRONMENTAL SPECIFICATIONS.................................. 12
3.3 MECHANICAL SPECIFICATIONS ......................................... 12
3.4 SAFETY SPECIFICATIONS ................................................... 12
3.5 TYPICAL FREQUENCY RESPONSE .................................... 13
14
4.1 MAKING MEASUREMENTS WITH THE K100/K110 ............. 14
4.2 INDICATOR LIGHTS - GREEN AND RED LEDS.................. 14
4.3 MODEL K100 OPERATION EXAMPLES ............................... 15
4.3.1 DC Current Measurement Example (K100)........................ 15
4.3.2 DC Current Measurement Example - Current Reversed
(K100) ............................................................................................. 15
4.3.3 Two-Wire Sum-of-Currents Example (K100) ..................... 16
(K100).................. 16
4.3.5 Oscilloscope Measurement Example (K100) ..................... 17
4.3.6 Maximum Step Discontinuity Example (K100)................... 17
4.4 MODEL K110 OPERATION EXAMPLES................................ 18
4.4.1 Measuring the DC Component of an (AC+DC) Waveform
(K110).............................................................................................. 18
4.4.2 Measuring the AC Component of an (AC+DC) Waveform
(K110).............................................................................................. 18
4.4.3 Oscilloscope Measurement Example (K110) ..................... 19
4.5 TIPS FOR MAKING PRECISE MEASUREMENTS............... 19
4.6 RESIDUAL READINGS FOLLOWING SEVERE
OVERLOADS ................................................................................................22
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DC/AC MicroProbe Models K100 and K110
5
23
5.1 BATTERY INSTALLATION ...................................................... 23
5.2 CLEANING ............................................................................... 24
5.3 REPAIR AND CALIBRATION ................................................. 25
5.4 TECHNICAL AND SALES ASSISTANCE .............................. 25
5.5 LIMITED WARRANTY............................................................. 26
5.5.1 Warranty Repairs.............................................................. 26
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DC/AC MicroProbe Models K100 and K110
Thank you for purchasing an AEMC®
For the best results from your instrument and for your safety, you must
read the enclosed operating instructions carefully and comply with the
product.
Indicates a WARNING. Whenever this symbol
is present, the operator must refer to the user manual before operation
Indicates a risk of electric shock. The voltage at the parts marked with this
symbol may be dangerous
This product complies with the Low Voltage & Electromagnetic Compatibility
European directives (73/23/CEE & 89/336/CEE)
CAT IV corresponds to measurements performed at the primary electrical
supply (< 1000 V).
Example: primary overcurrent protection devices, ripple control units, and
meters.
CAT III corresponds to measurements performed in the building installa-
tion at the distribution level.
CAT II corresponds to measurements performed on circuits directly con-
nected to the electrical distribution system.
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DC/AC MicroProbe Models K100 and K110
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 currents may
be present and may pose a shock hazard.
•
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.
Upon receiving your shipment, make sure that the contents are consistent
with the packing list. Notify your distributor of any missing items. If the
-
rier and notify your distributor at once, giving a detailed description of any
damage.
DC/AC MicroProbe Model K100................................................
DC/AC MicroProbe Model K110 .................................................
Both models include an electronic plug-in module with an attached current
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DC/AC MicroProbe Models K100 and K110
Model K100 and Model K110 are low current measurement instruments
that feature a compact, high sensitivity current probe. Unlike other instru-
ments, the Model K100 exhibits a wide dynamic operating range, which
extends from below 100µA to ± 4.5A peak, from DC to 2.0kHz*, without the
need for ranging. The K110 has an operating range of 100µA 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.
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DC/AC MicroProbe Models K100 and K110
9
Figure 1
1. Positive: Red banana plug (+)
2. Negative: Black banana plug (-)
3. Power ON indicator (green LED)
4. OVERLOAD indicator (red LED)
5. Power switch
6. Zero adjust knob (push in and turn to zero)
7. Probe window aperture
8. Probe handle
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DC/AC MicroProbe Models K100 and K110
Figure 2
1. Positive: Red banana plug (+)
2. Negative: Black banana plug (-)
3. Power ON indicator (green LED)
4. OVERLOAD indicator (red LED)
5. Power switch
6. Zero adjust knob (push in and turn to zero)
7. Probe window aperture
8. Probe handle
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DC/AC MicroProbe Models K100 and K110
11
MODEL K100
0 to ± 4.5 ADC
(0 to 3) Arms (sinusoidal)
1 mV/mA
Resolution:
DC: 50 µA typical
AC: 100 µA typical
DC: 1 % Reading ± 200 µA
AC: 2 % Reading ± 200 µA
Output Noise:
< 100 µV, DC to 3 kHz
DC to 2 kHz (@ -3 dB sine)
Zero Adjust:
± 25 mA
MODEL K100
0 to ± 4.5 ADC
(0 to 3) Arms (sinusoidal)
1 mV/mA
Resolution:
DC: 50 µA typical
AC: 100 µA typical
DC: 1 % Reading ± 200 µA
AC: 2 % Reading ± 200 µA
Output Noise:
< 100 µV, DC to 3 kHz
DC to 2 kHz (@ -3 dB sine)
Zero Adjust:
± 25 mA
< 200 µS, (10 to 90) % Vout
< 200 µS, (90 to 10) % Vout
200
Probe Inductance: < 1 µH
< 120 µA, null to maximum
Indicates momentary or continuous overload
Indicates power ON and good battery
LED (Green) ON between (6.5 to 10)V
Power Source: 9 V alkaline, NEDA 1604, 6LR61 or IEC 6LF22
Battery life 20 h approx. with alkaline battery
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DC/AC MicroProbe Models K100 and K110
(-14 to 131) °F (-10 to 55) °C
(-40 to 176) °F (-40 to 80) °C
< 95 % @ 35 °C, 75 % @ 55 °C
4.4 x 0.6 x 1.0) in (111 x 15 x 25) mm
4.9 x 2.5 x 1.1) in (124 x 64 x 28) mm
9 oz (250 g)
Connectors:
3/16 in, 0.180 in (4.5 mm)
5 ft (1.5 m)
EN61010-1, 300 V CAT II
CE mark for Electromagnetic Compatibility.
Immunity (EN 50082.1), IEC 1000-4-3 aptitude criteria A:
DC: 15 mV @ 0, AC (60 Hz): 2 dB from 10 mA to 4.5 A
Emmissivity (EN 50081.1): negligible
Drop Test: 1 m per IEC 1010
Shocks: 100 G per IEC 68-2-27
Vibrations: IEC 529
Protection Index: IP 40 per IEC 529
EN 50082-1 class A EN 50081-1
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DC/AC MicroProbe Models K100 and K110
13
Model K100
Figure 3
Model K110
Figure 4
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DC/AC MicroProbe Models K100 and K110
• Remove any conductor from within the probe jaws.
• Plug the electronic module into the displaying device (e.g., DMM,
oscilloscope). Note the polarity of the module output banana plugs
(red = positive [+], black = negative [-]).
• Select the appropriate range on displaying device (e.g., DMM,
oscilloscope). Note that the module output is 1 mV/mA for Model K100 and
10 mV/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
Overloads (§ 4.6) - the Model K100/K110 probe may be temporarily
magnetized.
• Clamp the probe around the conductor to be tested. The displaying
device should now display the measured conductor current. In DC, a
direction of the arrow.
• 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
conditions. Replace the 9 V 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 ± 4.7 A for Model K100 and 470 mA for Model K110, and
dynamic currents with large step discontinuities will cause the red LED
to turn ON.
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DC/AC MicroProbe Models K100 and K110
15
• Conductor carrying 20.0 mADC in the direction of the arrow
• Voltmeter placed in DC Volts mode
• Voltmeter displays 20.0 mV
Figure 5
• Conductor carrying 20.0 mADC in opposite direction of arrow
• Voltmeter placed in DC Volts mode
• Voltmeter displays -20.0 mV
Figure 6
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DC/AC MicroProbe Models K100 and K110
• Two conductors in probe aperture (note orientations)
• Voltmeter placed in DC Volts mode
• Voltmeter displays 18.0 mV
Figure 7
• Two conductors in probe aperture (note orientations)
• Voltmeter placed in DC Volts mode
• Voltmeter displays -4.0 mV
Figure 8
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DC/AC MicroProbe Models K100 and K110
• Conductor carrying a 2 A peak AC waveform
• Model K100 connected to oscilloscope
Figure 9
• Conductor carrying non-sinusoidal AC
• Model K100 connected to oscilloscope
• Maximum allowable step-discontinuity 2 A
Figure 10
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DC/AC MicroProbe Models K100 and K110
• Conductor carrying 20.0 mADC + 15.0 mAAC
• Voltmeter placed in DC Volts mode
• Voltmeter displays 200.0 mV
Figure 11
• Conductor carrying 20.0 mADC + 15.0 mAAC
• Voltmeter placed in AC Volts mode
• Voltmeter displays 150.0 mV
Figure 12
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DC/AC MicroProbe Models K100 and K110
19
• Conductor carrying a 0.2 A peak AC waveform
• Model K110 connected to oscilloscope
Figure 13
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:
• When using the Model K100/K110 with a meter, it is important to select
the range that provides the best resolution. Failure to do 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 and K110, to
measure 16.7 mADC.
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DC/AC MicroProbe Models K100 and K110
Model K100
Figure 14
Model K110
Figure 15
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DC/AC MicroProbe Models K100 and K110
21
• Always zero the Model K100/K110 prior to making a measurement.
See § 4.1 for procedure.
• Make sure that probe jaw mating surfaces are free of dust and
contamination. Contaminants cause air gaps between sensor halves,
which can contribute to measurement errors. See §5.3 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
transients may cause varying degrees of residual readings. If in doubt
of a particular reading, remove the probe from the conductor 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
contain large step discontinuities and/or frequency constituents near
or beyond the measurement passband are subject to measurements
errors and waveform distortion (oscilloscope 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
the input signal.
• You can use a DVM’s null function in place of the external DC zero
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 measured
function is enabled with the probe connected to the conductor.
When making null (relative) measurements, the probe aperture current
(not displayed current) must not exceed the maximum ratings set forth in
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