AEMC SL261 Assembly instructions

Ver. 2 09/05
AC/DC CURRENT PROBE
MODEL SL261
REPAIR AND CALIBRATION MANUAL
CATALOG #1201.51
ZERO
100 V/A
10 mV/A
OFF
I
When servicing this instrument, use
only specified replacement parts.

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
9/21/2005
GENERAL DESCRIPTION
The AEMC model SL261 is a portable 100 A peak
current probe with an insulated BNC output cable that
can accurately measure AC or DC current wave
forms. The unit has proportional mV output for direct
readings on oscilloscope
ELECTRICAL SPECIFICATIONS
Output Signal: mV output (1000 mV peak max.)
Current Range: 100 mV/A: 100 mA to 10 A peak
10 mV/A : 1A to 100 A peak
AC Current Accuracy: (after calib. and for one year)
Range Accuracy
100 mV/A (50 mA to 10 A peak) 3% of reading ± 50 mA
10 mV/A (500 mA to 40 A peak) 4% of reading ± 50 mA
10 mV/A (40A to 100 A peak) 15% Max. at 100 A
Phase Shift:
< 1°from DC to 65 Hz on 10 mV/A
< 1.5°from DC to 65 Hz on 100 mV/A
* Reference Conditions: 23°C ± 5°K, 20 to 75% RH, DC to 1 kHz,
probe zeroed, 1 minute warm-up, battery at 9V ±0.1 V. External
magnetic field < 40A/m, no DC component, no external current
carrying conductor, 1 MΩ/ 100 pF load, conductor center.
Frequency Range: DC to 100 kHz
(-3 dB with current derating)
Noise: Range 10 mV/A : 480 μV
Range 100 mV/A : 3 mV
Slew Rate: Range 10 mV/A: 20 mV/μs
Range 100 mV/A: 0.3 V/μs
Load Impedance: >1 MΩ/100 pF
Insertion: (50/60 Hz): 100 mV/A: 0.01 Ω
10 mV/A: 0.01 Ω
Rise or Fall Time: Range 100 mV/A: 3 μs
Range 10 mV/A: 4 μs
Working Voltage: 600 V rms max.
Common Mode Voltage: 600 V rms max.
Influence of Adjacent Conductor: < 0.2 mA/A AC
Influence of Conductor Position in Jaw
0.5% reading at 1 KHz
Battery: 9 V alkaline (NEDA 1604A, IEC 6LR61)
Low Battery: Green LED Off when ≥6.5 V
Overload Indication: Red LED indicates input
greater than the selected range.
Typical Consumption: 8.6 mA
Battery Life: 55 hours typical
MECHANICAL SPECIFICATIONS
Operating Temperature Range:
0°C to +50°C (32°F to 122°F)
Storage Temperature Range:
-30°C to +80°C (-22°F to 176°F)
Influence of Temperature: < 0.2% per °C
Operating Relative Humidity:
10-30 °C 85 ± 5% RH (Without condensation)
40-50 °C 45 ± 5% RH (Without condensation)
Altitude: Operating: 0 to 2000 m
Non operating: 0 to 12000 m
Zero Adjustment: 20 turn potentiometer
Maximum Cable Diameter: 0.46” (11.8 mm)
Case Protection: IP20 per IEC 529
Drop Test: 1.0 m on 38 mm of oak on concrete. (IEC
1010)
Mechanical Shock: 100G, Test Per IEC 68-2-27
Vibration: Test Per IEC 68-2-6
Frequency Range: 10 Hz to 55 Hz
Amplitude: 0.15 mm
Dimensions: 9.09 x 1.42 x 2.64” (231 x 36 x 67mm)
Weight: 11.6 oz (330 g) with battery
Handle: LEXAN 920A, UL 94V2, Color: Dark Gray
Output Lead: Insulated 6.5 foot (2 m) coaxial cable
with insulated BNC connector
SAFETY SPECIFICATIONS
Electrical:
Double insulation or reinforced insulation between
the primary, the secondary and the outer case of
the handle upon IEC 1010.
- 600 V Category III, Pollution Degree 2
- 300 V Category IV, Pollution Degree 2
Electromagnetic Compatibility (CE Mark):
EN 50081-1, Class B
EN 50082-2 Electrostatic discharge IEC 1000-4-2
Radiated Field IEC 1000-4-3
Fast transients IEC 1000-4-4
Magnetic field at 50/60 Hz IEC 1000-4-8

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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
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CALIBRATION PROCEDURE
Required Equipment:
INSTRUMENT TYPE RECOMMENDED MODEL
1 DC/AC Voltage Calibrator Fluke Model 5100B or equivalent
1 Digital Multimeter Fluke Model 8050A or equivalent:
Accuracy: 0.1% DC and ≥0.15% AC or equivalent
1 Current amplifier Fluke Model 5220 or equivalent
1 Magnet Wire Coil 100 turns
1 Small insulated screwdriver
1 BNC to banana plug adapter
2 DMM with 1 A Range and 1 V AC Datron 1062 or equivalent
band with 100 KHz Accuracy 1% or better
1 Function generator from 50 to 100 KHz
To be able to calibrate the SL261 you need to pop out the plastic dot located on the left side of
the probe (use sharp tweezers), thus accessing the potentiometer. Connect the different
instruments as shown below.
Use the following procedure to calibrate the AEMC Model SL261:
Turn calibrator on and allow sufficient warm-up time for stable operation (15 to 30 mn).
a) Connect the 100 turns coil to the output of the calibrator and the Model SL261 to the Digital
Multimeter input (use the BNC adapter). Select the 200 mV DC range on the multimeter and
"100 mV/A" range on the probe

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
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b) With the probe out of the coil adjust the zero adjust knob (R11) to read 0 ±0.5 mV on the
multimeter.
c) Set the calibrator to provide 60 mA at 50 Hz in the 100 turns coil, thus producing 6 A turns.
With the voltmeter in the AC function (1 V range) and the probe centered on the coil, adjust
R17 to read 602 mV ± 2 mV.
Set the amplifier to standby.
d) Select the “10 mV/A” range and set the calibrator to source 600 mA at 50 Hz in the 100
turns coil, thus producing 60 A turns.
With the voltmeter in the AC function (1 V range) and the probe centered on the coil, check
that the reading is 600 mV ±24 mV.
Set the calibrator to source 60 mA at 50 Hz in the 100 turns coil, thus producing 6 A turns.
Check that the reading is 60 mV ±2.4 mV.
After calibration check the current probe on the chart below. If some points are out of accuracy,
readjust R17 to balance the readings.
DC range 10 mV/A
Positive Negative
Measure Minimum Maximum Measure Minimum Maximum
10 A 98 mV 102 mV -10 A -98 mV -102 mV
30 A 294 mV 306 mV -30 A -294 mV -306 mV
60 A 576 mV 624 mV -60 A -576 mV -624 mV
90 A 837 mV 963 mV -90 A -837 mV -963 mV
100 A 910 mV 1,09 V -100 A -910 mV -1,09 V
DC range 100 mV/A
Positive Negative
Measure Minimum Maximum Measure Minimum Maximum
1 A 98 mV 102 mV -1 A -98 mV -102 mV
3 A 294 mV 306 mV -3 A -294 mV -306 mV
6 A 588 mV 612 mV -6 A -588 mV -612 mV
10 A 980 mV 1,02 V -10 A -980 mV -1,02 V

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Overload LED verification
Use the same setup as done in the calibration. The red LED must be lit when the current
measured is greater than the value of the chart below.
Measure Range
+10 A ± 2% 100 mV/A
+120 A 10 mV/A
-120 A 10 mV/A
Use a one turn loop connected to the conductance amplifier Model 5220. Set the 5100 to
supply 2 V at the following frequencies (2 Arms.).
Frequency Range
100 mV/A 10 mV/A
100 Hz Min.: 196 mV
Max.: 204 mV Min.: 19.6 mV Max.: 20.4 mV
Connect a 100 turns coil to the output of function generator and monitor the current with an
ammeter (100 Khz bandwith) in series. Adjust the current to 19 mA AC at 100 Khz. The probe
output is between 130.15 mV and 193.8 mV on the 100 mV/A range and 13.02 to 19.4 mV on
the 10 mV/A range.

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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
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ASSEMBLY PARTS LIST
PART NUMBER DESCRIPTION QUANT. LOC.
520099E00 TRUARC WASHER (Battery cover) 1 3
521163C57 SCREW ST2, 84-12.7/C/FE 1 16
521166F57 SCREW CL Z ST12.7 1 8
524031-00 BATTERY CONNECTOR 1 36
524751-00 SELF TAPPING SCREW 1 7
621145-57 SQUARE NUT 1 15
679410-00 SPRING 1 11
679912A96 STRAIN RELIEF 1 34
683242-96 BATTERY COVER 1 32
683243A82 SLIDE 1 6
683295B96A SHAFT COVER 2 25
683298-51 SHAFT 1
683299-56 SCREW (Battery cover) 1 4
683302-57 SHAFT 1 2
683316-00 SPRING 1 1
683377-00 SLIDE SPRING 1 5
683383-40 FLAT SPRING 1 14
683644-96 KNOB 1 10
683646A96A KNOB DRIVER 1 23
683647A51A BLADE (SL) 1 24
685370-96A TOP CASE +BOTTOM CASE 1 21
685373-96A BOTTOM CASE +BOTTOM COVER 1 32
685378-95A SHIELD 1 26
686613-93A BOARD ASSY. (With Hall effect sensor) 1 27
685973-28A “U” CORE ASSEMBLY 1 22
685973-28B “I” CORE ASSEMBLY 1 22A
685451-96A COVER BOTTOM 1 33
99-LBL 100174 LABEL SL261 RANGE 1 19
99-LBL 100175 LABEL SL261 RATING 1 38
99-LBL 100295 LABELSL261 WARNING 1 37
99-LDS 100012 LEAD BNC 1 35
99-MAN 100042 MANUAL SL261 1
BLACK SILICONE 30

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
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MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
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Board Layout

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
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Schematic

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
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MAIN BOARD PARTS LIST
Des. Type Value Specification TYPE ID Code Ref #
C..
C 01 CAP 1 uF 20 % 16 V TANTALUM 524891T30
C 02 CAP 100 nF 10 % 50 V CERAMIC 525083 E37
C 03 CAP 22 uF 20 % 16 V TANTALUM 525180D30
C 04 CAP 1 nF 10 % 50 V CERAMIC 525083A30
C 05 CAP 22 uF 20 % 16 V TANTALE 525180D30
C 06 CAP 1 uF 20 % 16 V TANTALUM 524891T30
C 08 CAP 100 nF 10 % 50 V CERAMIC 525083 E37A
C 09 CAP 100 nF 10 % 50 V CERAMIC 525083 E37A
C 11 CAP 270 pF 5 % 50 V CERAMIC 525180 E30
C 12 CAP 4,7 nF 5 % 50 V CERAMIC 525180G37A
C 13 CAP 3,3 nF 5 % 50 V CERAMIC 525180F30
CR..
CR 01 DIODE LM385M-2.5 REFERENCE 2V5 SO-08 524842S30
CR 02 DIODE BZV 55C2V4 ZENER 2V4 0.5 W 2V4 SOD-80 524842U30
CR 03 DIODE LL 4148 SIGNAL SOD-80 524842N37
A
CR 04 DIODE LL 4148 SIGNAL SOD-80 524842N37
A
CR 05 DIODE LED GREEN
∅
3mm
523175W00
CR 06 DIODE LED RED
∅
3mm
523175V00
CR 07 DIODE BZV 55C5V1 ZENER 0.5 W 5V1 SOD-80 524842Y30
CR 08 DIODE RLR 4004 RECTIFIC. LL-41 524842Z30
Q..
Q
01 TRAN BC 857B NPN Bi
p
Si
g
n SOT-23 524113R30
Q
02 TRAN VPO 610T2 PUIS.CANAL VMOS SOT-23 524113U30
Q
03 TRAN BC 857B NPN SOT-23 524113R30

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
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R..
R0 01 RES 30 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-30KJ 525077P30
R0 02 RES 8,25 kohm 1 % 1/4W 50ppm C.METAL R/-RC37158K25F 525033C37
R0 03 RES 20 ohm 1 % 1/4W 50ppm C.METAL R/-RC3715-20KF 525029Q30
R0 04 RES 20 ohm 1 % 1/4W 50ppm C.METAL R/-RC3715-20KF 525029Q30
R0 05 RES 32,4 ohm 1 % 1/4W 50ppm C.METAL R/-RC371532K4F 525077T30
R0 06 RES 22 kohm 5 % 0,1W 200ppm FILM Ep R/-RR0805-22KJ 525140L30
R0 07 RES 4,7 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-4K7J 525085A37
R0 08 RES 100 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206100KJ 525085B37
R0 09 RES 100 kohm 1 % 1/4W 50ppm C.METAL R/-RC3715100KF 525033H37
R0 10 RES 100 kohm 1 % 1/4W 50ppm C.METAL R/-RC3715100KF 525033H37
R0 11 POT 47 kohm 20 % 1/2W 100ppm MULT-CE 525121A11
R0 12 RES 332 kohm 5 % 1/4W 200ppm C.METAL R/-RR1206332KJ 525056H37A
R0 13 RES 10 kohm 1 % 1/4W 50ppm C.METAL R/-RC3715-10KF 525029J37
R0 14 RES 10 kohm 1 % 1/4W 50ppm C.METAL R/-RC3715-10KF 525029J37
R0 15 RES 21,5 kohm 1 % 1/4W 50ppm C.METAL R/-RC371521K5F 525085U30
R0 16 RES 22,1 kohm 1 % 1/4W 50ppm C.METAL R/-RC371522K5F 525029L30
R0 17 POT 470 ohm 20 % 1/2W 100ppm MULT-CE 525121B00
R0 18 RES 619 ohm 1 % 1/4W 50ppm C.METAL R/-RC3715619UF 525140Y30
R0 19 RES 1 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-1KJ 525077N37
R0 20 RES 1 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-1KJ 525077N37
R0 21 RES 0 ohm FILM Ep R/-RR1206-000U 525116G30
R0 22 RES 0 ohm FILM Ep R/-RR1206-000U 525116G30
R0 23 RES 10 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-10KJ 525085C370
R0 24 RES 3,32 kohm 1 % 1/4W 50ppm C.METAL R/-RC37153K32F 525029N37
R0 25 RES 1,21 kohm 1 % 1/4W 50ppm C.METAL R/-RC37151K21F 525077S30
R0 26 RES 3,65 kohm 1 % 1/4W 50ppm C.METAL R/-RC37153K65F 525077J30
R0 27 RES 332 ohm 1 % 1/4W 50ppm C.METAL R/-RC3715332UF 525056L30
R0 28 RES 0 ohm FILM Ep R/-RR1206-000U 525116G30
R0 29 RES 10 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-10KJ 525085C37
R0 30 RES 22 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-22KJ 525189Q30
R0 31 RES 1 kohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-1KJ 525077N37
R0 32 RES 1 Mohm 5 % 1/4W 200ppm FILM Ep R/-RR1206-1MJ 525085D37

MODEL SL261 REPAIR AND CALIBRATION MANUAL CAT# 1201.51
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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
9/21/2005
R0 33 RES 402 ohm 1 % 1/4W 50ppm C.METAL R/-RC3715402UF 525189K30
RT..
RT 01 CTN 220 ohm Thermister 525021C30
RT 02 CTP 4,7 kohm Thermister Lin 523659N30
S..
S 02 SWITCH SLS 230PC SLIDE SWITCH 3POS 524246-00
Z..
Z 0 IC TLC 27M2CD OP-
A
MP SO-08 525034J30
Z 0 IC LMC 660CM
Q
UAD OP-
A
MP SO-14 525145W30
Z 0 IC LM 393AM COMP
A
R. SO-08 525034
Q
30
Z 0 IC MC 14528BDM MONOSTABL SO-16 525145V30
Z 5 CELL HALL-
EFFECT 524303 E00
CIRCUIT BOARD 684205-00
J..
J 1 CONN. 524031-00

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VERSION 2: September 21, 2005
FILE LOCATION: Manuals - Service Man. - SL261MAN.DOC
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Repair and Calibration
To ensure that your instrument meets factory specifications, we recommend that it be submitted 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).
Chauvin Arnoux®, Inc.
d.b.a. AEMC®Instruments
15 Faraday Drive
Dover, NH 03820 USA
Tel: [phone] (Ext. 360)
[phone] (Ext. 360)
Fax: [phone] or [phone]
[email protected]
(Or contact your authorized distributor)
Costs for repair, standard calibration, and calibration traceable to N.I.S.T. are available.
NOTE: All customers 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 hotline:
Chauvin Arnoux®, Inc.
d.b.a. AEMC®Instruments
200 Foxborough Boulevard
Foxborough, MA 02035, USA
Phone:[phone]
[phone]
Fax: [phone]
[email protected]
www.aemc.com
NOTE: Do not ship Instruments to our Foxborough, MA address.