Altek 536 Clamp On Sales Sheet User Manual

							DATA SHEET 536 
GENERAL DESCRIPTION
ALTEK
MODEL 536
CLAMP-ON METER
Do More with One Tool
The Altek Model 536 is a rugged, reliable, clamp meter with
greater versatilty than clamp meters that measure only AC
current. Measure AC Current, DC current, AC and DC volts,
frequency, ohms plus check continuity. Troubleshoot
industrial, commercial, hospital and residential electrical
and HVAC systems with the 536. This versatile clamp
meter offers true-rms sensing and MAX hold for measuring
inrush current or the maximum load on a circuit. The Model
536’s combination of true-rms measurements, rugged
construction, and reliable performance makes this meter
indispensable for troubleshooting various problems
associated with non-linear loads.
True-RMS Readings
The Model 536 displays the true-rms value of AC
measurements. This feature is highly desirable for today’s
engineers and technicians working with signals that
contain harmonic currents caused by non-linear loads.
Virtually all electronic equipment falls into this category –
switching power supplies (UPS), PCs, printers, HID
lighting, variable speed motor drives, and other types of
equipment that draw current in short pulses. Average-
sensing meters cannot accurately measure currents
containing harmonics which cause distorted waveforms.
Average-sensing meters can only accurately measure pure
sine waves. One measure of waveform distortion is Crest
Factor (CF), the ratio of the peak to the rms value of the
wave. CF for a pure sine wave is 1.414. CFs other than
1.414 indicate the presence of harmonic current flow.
Altek’s true-rms Model 536 gives correct readings for any
wave shape, within the instrument’s CF specifications.
Frequency
Frequency can be used to determine the output 
frequency of variable speed drives, to set the governor of
an engine generator, or to detect third harmonic currents
(180 Hz) in the neutral of a three-phase system.
ALTEK INDUSTRIES CORP

• TRUE RMS (current and voltage)
• DC CURRENT & VOLTAGE
• FREQUENCY
• RESISTANCE & CONTINUITY BEEPER
• AUTO AND MANUAL RANGING WITH DATA HOLD
• DUAL DISPLAY(4000 count digital display,
41 segment analog bar graph)
• MIN/MAX/AVERAGE RECORDING
• EASY SINGLE-HANDED OPERATION
• SAFETY-DESIGNED HAND GUARD
• DESIGNED FOR SAFETY TO IEC 61010-1
• RUGGED AND RELIABLE
• SEALED, SPLASH-PROOF AND DUST-PROOF CASE
Designed for Heavy Duty Use
The jaw opening can handle two parallel 500 MCM cables, and
the protective hand guard helps prevent accidental contact
with conductors. The 536 is built extra strong to withstand
heavy duty, job site abuse.
Easy-To-Use
Simple, one touch push-buttons make the Model 536 clamp
meter easy to use.
Analog/Digital Display
The extra large LCD combines an accurate digital display with
a fast analog bar graph for quick indication of varying signals.
The digital display, updating four times per second, displays
readings while the bar graph, updating 20 times per second,
displays a quick view of the signal being measured.
Data Hold
Obtain readings in difficult areas where you can’t see the
display.
Auto Power Off
Preserves battery life by automatically shutting the unit off
after ten minutes of inactivity. Disable the power off mode of
the Model 536 by pressing the ON/OFF pushbutton once.
Max/Min/Avg
Monitor the fluctuations in a measurement and record the
average value over time.
Soft
Provides stable readings when loaded currents are fluctuating.
Displays a running three-second average.
Crest
Measures the instantaneous half-cycle peak value of current
waveforms. The ratio of the instantaneous half-cycle peak
current value to the RMS current value is the Crest Factor,
which can be an indicator of the presence of harmonics.
DC Ampere Measurement
Using Hall-effect technology, the 536 accurately measures AC
and DC amperes without disturbing the test circuit. Push a
button for fast Zero adjustment to measure DC amperes. 
						

							© June 2000 Altek Industries Corp., 
100908-900 Rev A
AVAILABLE FROM
General
DISPLAY: Digital 4000 counts (3 3
/4 digits), [Hz: 9999 counts]
Updates four times/sec
Analog 41 segment bar graph, Updates 20 times/sec
MAXIMUM CONDUCTOR SIZE: 2.01 (51 mm)
MAXIMUM JAW OPENING: 2.05 (52 mm)
MAXIMUM CONDUCTOR VOLTAGE: 600V rms
AC Voltage
Common Mode Rejection Ratio: > 80 dB, dc to 60 Hz
DC Voltage Normal Mode Rejection Ratio: > 11 dB, at 50 Hz or 60 Hz
Common Mode Rejection Ratio: > 84 dB, at dc, 50 Hz, or 60 Hz
CREST FACTOR, CONTINUOUS WAVEFORM (45 HZ TO 65 HZ, LESS THAN
1000A PEAK): 1.4 to 2.0 – add 20 digits to accuracy below 100A
2.0 to 3.0 – add 1% to accuracy +20 digits below 100A
3.0 to 5.0 – add 2% to accuracy +20 digits below 100A
ADJACENT CONDUCTOR EFFECT: Maximum is 1% of current in adjacent conductor
OPERATING TEMPERATURE  RANGE: 14°F to 131°F (-10°C to 55°C)
STORAGE TEMPERATURE  RANGE: -4°F to 140°F (-20°C to 60°C)
RELATIVE HUMIDITY: 0% to 80% at 104°F (30°C), 70% at 122°F (50°C)
BATTERY: 9V, (NEDA 1604)
BATTERY LIFE: 80 hours typical (alkaline)
SAFETY STANDARDS: UL1244, IEC 61010-1 (Over voltage Category II), CSA
C22.2 No. 231, ANSI/ISA (Appropriate Parts) S82, VDE 0411, and CE-certified
OVERALL SIZE: 1.73 H x 3.84 W x 9.65 L (4.39 cm x 9.75 cm x 24.5 cm)
WEIGHT: APPROX: 1.21 lb (545g)AC CURRENT:
Amperes1
Range Resolution Accuracy20.30A to 39.99A 0.01A ±(8% + 30)        20 Hz – 30 Hz3±(4% + 30)        30 Hz – 45 Hz4±(3% + 20)        45 Hz – 65 Hz
±(4% + 30)        65 Hz – 1 KHz
0.30A to 399.9A 0.1A ±(8% + 3) 20 Hz – 30 Hz
3±(4% + 3)        30 Hz – 45 Hz4±(3% + 2)        45 Hz – 65 Hz
±(4% + 3)        65 Hz – 1K Hz
400A to 700A 1A Not Specified      20 Hz – 30 Hz
3±7%  0 Hz – 45 Hz4±5%           45 Hz – 65 Hz
±7%           65 Hz – 1K Hz
1Sine Wave, measured with conductor centered at alignment marks and 
battery life indication greater than 40 hours at meter power up self test
2RMS Min/Max: Add 10 counts3AVG only, 2.5A and above RMS Min/Max: Add 2% of reading41A and above
INSTANTANEOUS AMPERES (PEAK MODE)1:
Range Resolution Accuracy
0.4A to 39.99A 0.2A ±(4% + 40)        20Hz – 30Hz
2
±(4% + 30)        30Hz – 45Hz3
±(3% + 30)        45Hz – 65Hz
±(4% + 30)        65Hz – 1KHz
0.4A to 399.9A 2A ±(4% + 4)          20Hz – 30Hz
2
±(4% + 3)          30Hz – 45Hz3
±(3% + 3)          45Hz – 65Hz
±(4% + 3)          65Hz – 1KHz
400A to 599A 4A ±4%           20Hz – 30Hz
2
±4%           30Hz – 45Hz3
±3%           45Hz – 65Hz
±4%           65Hz – 1KHz
600A to 999A 4A ±7%           20Hz – 30Hz
2
±7%           30Hz – 45Hz3
±7%           45Hz – 65Hz
±7%           65Hz – 1KHz
1Sine Wave, measured with conductor centered at alignment marks and 
battery life indication greater than 40 hours at meter power up self test
22.5A and above31A and above
FREQUENCY1:
Range Resolution Accuracy
0.5 Hz to 999.9 Hz 0.1 Hz ±(0.2% + 3)
1000 Hz to 9999 Hz 1 Hz ±(0.2% + 3)
1Sine Wave, measured with conductor centered at alignment marks, and
battery life indication greater than 40 hours at meter power up self test
DC CURRENT:
Range Resolution Accuracy
0.30A to 39.99A 0.01A ±(2% + 30)
0.3A to 399.9A 0.1 A ±(2% + 10)
400A to 700A 1A ±(2% + 10)
With Current Autorange: Trigger level, 5 Hz to 1,500 Hz, 0.7A RMS 
or more, peak current
With Manual Ranging: Trigger threshold, 10 Hz to 1,000 Hz
40A Range – 6A RMS or more
400A Range – 40A RMS or more
Specifications subject to change without notice
AC VOLTAGE (TRUE RMS) / DC VOLTAGE:
Accuracy
Range Resolution  AC Voltage    DC Voltage
45 Hz to 65 Hz  45 Hz to 1 KHz       
0 to 39.9V 0.01V
0 to 399.9V 0.1V ±(2.5% +5) 0 to 600V 1V ±(1.5% + 5) ±(1.5% + 5)
RESISTANCE:
Range               Resolution Accuracy
0 to 399.9 Ω 0.1Ω ±(1.0% + 10)
0 to 3.999 K Ω1Ω ±(1.0% + 3)CONTINUITY CHECK:
Range     Continuity Beeper
400 Ω Approx. < 35 Ω
±(1.0% + 3)
±(1.0% + 3)
ORDERING INFORMATION Part No.
True RMS Clamp-On Meter 536
Included with each Model 536 are:
Clip-On Holster, Test Leads, Carrying Strap
User’s Manual, 9V Battery (Installed)
Certificate of Conformity and Lifetime Warranty
SPECIFICATIONS
(Unless otherwise indicated, specifications are for one year in ±(% of reading + number of digits) @ 23°C
LIFETIME WARRANTY  PROGRAM
Our equipment is guaranteed against defective material and
workmanship (excluding batteries and test leads) for a period of
one year. For a lifetime warranty: (1) Simply register the unit upon
receipt by completing and returning the product’s Warranty
Registration Card. (2) Once a year, send the unit to any Altek
authorized distribution center for re-certification. Claims under
warranty can be made by returning the equipment, prepaid, to any
authorized Altek distributor. Altek will repair, re-calibrate or
replace, free of charge, any unit found to be defective or out of
calibration at any time between re-certification intervals. The
liability of Altek is restricted to that given under our guarantee. No
responsibility is accepted for damage, loss or other expense
incurred through sale or use of our equipment. Under no condition
shall Altek be held liable for any special, incidental or
consequential damage.
OTHER PRODUCTS
Altek designs and manufactures fast, accurate instruments for
measurement, generation and simulation of virtually every
process control signal. Consult our factory directly or contact your
local stocking representative to order precise, low cost Milliamp
Calibrators, Voltage Sources, Thermocouple Sources, RTD
Simulators, Frequency Calibrators, Pressure Pumps, Indicators
and Calibrators as well as electrical test instruments. Altek also
produces calibrators for custom ranges and unique applications.
New models are frequently added to the Altek family to meet all of
your critical calibration requirements.