Kusam-meco KM 829 User manual

An ISO 9001:2008 Company
®
G-17, Bharat Industrial Estate, T. J. Road, Sewree (W), Mumbai - 400 015. INDIA.
Sales Direct.: 022 -2 4156638, Tel. : [phone], Fax : 022 - 24149659
Email : [email protected], Website : www.kusamelectrical.com,
An ISO 9001:2008 Company
®
All Specifications are subject to change without prior notice
Navin com/D:Sandeep Gupta/New Catlog Dec 2011/KM-829.cdr
AC; AC+ DC TRUE RMS DIGITAL MULTIMETER
WITH PC INTERFACE
26 FUNCTIONS ; 64 RANGES
Model KM 829
GENERAL SPECIFICATIONS
 Sensing : AC, AC+DC True RMS
 Display :
9999 Counts : ACV, DCV, Hz & nS
6000 Counts : mV, A, mA, A, Ohm & Capacitance
 Update Rate :
Digital Display : 5 per second nominal;
41 Segments Bar-graph : 60 per second max
 Low Battery : Below approx 7V
 Operating Temperature : 0°C to 45°C
 Relative Humidity : Max. 80% R.H. for Temperature
up to 31°C decreasing linearly to 50% R.H. at 45°C
 Pollution degree : 2
 Storage Temperature : -20°C to 60°C, <80% R.H.
(with battery removed)
Altitude : Operating below 2000m
 Temperature Coefficient : nominal 0.15 x ( specified
accuracy)/°C @ (0°C ~ 18°C or 28°C ~ 45°C), or
otherwise specified
 Power Consumption : 5mA typical
APO Timing : Idle for 30 minutes
APO Consumption : 50A typical
 Power Supply : Single 9V battery
 Weight : Approx. 635gm with holster
 Dimension : 208(L) x 103(W) x 64.5(H) mm

nd nd
1 2 Ed., UL61010-1 2 Ed., & CAN/CSA C22.2 No.
61010.1-0.92 to Category IV 1000V AC & V DC.
Transient Protection : 12 kV (1.2/50s surge)
Terminals (to COM) Measurement Category :
V : Category IV 1000VAC & DC
mAA : Category IV 600VAC & 300VDC
A : Category IV 600VAC & 500VDC
Overload Protection :
A & mA : 1A/600VAC, IR 100kA, F Fuse
A : 10A/600VAC , IR 100kA, F Fuse
V : 1050Vrms, 1450Vpeak
mV, & Others : 600VDC & VAC rms
EMC : Meets EN61326-1:2006 (EN55022, EN61000-
3-2, EN61000-3-3, EN61000-4-2, EN61000-4-3,
EN61000-4-4, EN61000-4-5, EN61000-4-6,
EN61000-4-8, EN61000-4-11)
In an RF field of 3V/m :
Capacitance function is not specified
Other function ranges :
Total Accuracy = Specified Accu. + 100 dgts
Performance above 3V/m is not specified.
 Rugged fire retarded casing with battery access door
 Replaceable protective holster with probe-holders &
Tilt-stand.
 600V (Ohm, Capacitance & all other Functions) Input
protection.
 600V High Breaking Capacity fuses protection on
Current inputs.
 LVD meets EN61010-1 CAT IV 1kV.
nd
Double insulation per IEC61010-1 2 Ed., En61010-
SAFETY :
U
L
CAT IV
1KV
Beep-JackAudible & Visible Input Warning
Auto-Ranging
 Relative Zero Mode
 PC Interface Capability
AutoCheck V-; Auto-Ranging
 Crest (Instantaneous Peak Hold)
T1-T2 differential Temperature readings.
 Data Hold

FEATURES :

AC; AC+DC True RMS Conversion Frequency
Bandwidth upto 20kHz (V) & 1kHz (A)
 4 Digit 10,000 counts large easy to read Backlight
LCD display
 Fast Measurements, 5/sec; Fully Auto-Ranging
 Record Max/Min readings, Auto Ranging
 NCV & Probe-Contact EF-Detection
 dBm function with 20 selectable values
 Lo-Z volts to drain Ghost Voltages
(AutoCheck Feature)
 Logic & Line Level Frequency
 Logic Level Duty Cycle Readings & Diode Tester
 Fast Audible Continuity
Auto Power Off
DC Voltage Basic Accuracy 0.08%
SPECIAL FEATURES :
ACCESSORIES :
Test lead pair, Battery installed, User Manual,
One BKP60 banana plug type-K Thermocouple.
OPTIONAL ACCESSORIES :
USB interface kit BU-82X; BMH-01 Magnetic Hanger;
BKB32 banana plug to type-K socket plug adaptor.
Current Clamp CA300, Current Clamp Adaptor CA500,
CA1000, CA2000, High Voltage Probe PD-28.
Model - KM 829
Software CD
Software
Fuse
Software Cable
Thermocouple
Magnetic Hanger
HZ 50.00 HZ
600.0 V
Main-Data
Sub-DataItem# Time
1
2
3
4
5
6
7
8
9
10
11:51:30:9
11:51:31:4
11:51:31:9
11:51:32:4
11:51:32:9
11:51:33:4
11:51:33:9
11:51:34:4
11:51:34:9
11:51:35:4
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
50.00 Hz
600 V
610 V
605 V
580 V
600 V
608 V
603 V
590 V
610 V
605 V
11:51:35:4 50.00 Hz 600 V 580 V
1000
750
500
250
-250
-500
-750
-1000
0
11:51:30:9 11:51:31:4 11:51:31:9 11:51:32:4 11:51:32:9 11:51:33:4 11:51:33:9 11:51:34:4 11:51:34:9 11:51:35:4

Navin com/D:Sandeep Gupta/New Catlog Dec 2011/KM-829cdr
ELECTRICAL SPECIFICATIONS : KM 829
o o
Accuracy is (% readings digits + number of digits) or otherwise specified, at 23 C ± 5 C & less than 75% relative humidity.True RMS
Voltage & Current accuracies are specified from 10% to 100% of range or otherwise specified. Maximum Crest Factor < 3:1 at full
scale & <6:1 at half scale, and with frequency components within the specified frequency bandwidth for non-sinusoidal waveforms.
1) Specified from 30% to 100% of range.
CMRR : > 60dB @ DC to 60Hz, Rs=1KW
Input Impedance : 10MW, 50pF nominal (80pF nominal for 600mV range)
Residual reading less than 5 digits with test leads shorted.
AC & AC+ DC VOLTAGE
Range Resolution Accuracy
40Hz ~ 500Hz
±(0.8% rdg + 4 dgts)
±(2.0% rdg + 4 dgts)
500Hz ~ 1kHz
±(2.0% rdg + 3 dgts)
±(1.0% rdg + 4 dgts)
±(2.0% rdg + 4 dgts)
1kHz ~ 3kHz
3kHz ~ 20kHz
±(2% rdg + 3 dgts)
Unspec’d
50Hz ~ 60Hz
60.00 mV
9.999 V ±(0.5% rdg + 3 dgts)
600.0 mV
99.99 V
999.9 V
60.00 mV
9.999 V
600.0 mV
99.99 V
999.9 V
±(1.0% rdg + 4 dgts)
60.00 mV
9.999 V
600.0 mV
99.99 V
999.9 V
60.00 mV
9.999 V
600.0 mV
99.99 V
999.9 V
±(2% rdg + 3 dgts)
±(3.0% rdg + 4 dgts)
1)
60.00 mV
9.999 V
600.0 mV1)
99.99 V
999.9 V
3dB
3dB
0.01 mV
1 mV
0.1 mV
10 mV
100 mV
0.01 mV
1 mV
0.1 mV
10 mV
100 mV
0.01 mV
1 mV
0.1 mV
10 mV
100 mV
0.01 mV
1 mV
0.1 mV
10 mV
100 mV
0.01 mV
1 mV
0.1 mV
10 mV
100 mV
±(0.12%rdg + 2dgts)
±(0.06%rdg + 2dgts)
±(0.08%rdg + 2dgts)
NMRR : >60dB @ 50/60Hz
CMRR : >110dB @ DC 50/60Hz, Rs=1KW
Input Impedance : 10MW, 50pF nominal (80pF nominal for 600mV range)
DC VOLTAGE
Range Resolution Accuracy
60.00 mV
9.999 V
600.0 mV
99.99 V
999.9 V
0.01 mV
1 mV
0.1 mV
10 mV
100 mV
0.08mV / mA
1.5mV / mA
0.04V / A
10A continuous, > 10A to 20A for 30 second max with 5 minutes cool down interval
±(0.2% rdg + 4 dgts)
DC CURRENT
Range Resolution Accuracy Burden Voltage
600.0 mA
60.00 mA
600.0 mA
6000 mA
6.000 A
10.00 A
0.1 mA
0.01 mA
0.1 mA
1 mA
0.001 A
0.01 A
600.0 mA
60.00 mA
600.0 mA
±(0.6%rdg + 3dgts)
±(0.8%rdg + 6dgts)
±(1.0%rdg + 3dgts)
40Hz ~ 1kHz
0.08mV / mA
2.1mV / mA
0.02V / A
±(0.8%rdg + 4dgts)
10A continuous, > 10A to 20A for 30 second max with 5 minutes cool down interval
AC & AC+ DC CURRENT
Range Resolution Accuracy
50Hz ~ 60Hz
6000 mA
6.000 A
10.00 A
Burden Voltage
600.0 mA
60.00 mA
600.0 mA
±(0.8%rdg + 6dgts)
±(1.0%rdg + 4dgts)
0.08mV / mA
2.1mV / mA
0.02V / A
6000 mA
6.000 A
10.00 A
0.1 mA
0.01 mA
0.1 mA
1 mA
0.001 A
0.01 A
0.1 mA
0.01 mA
0.1 mA
1 mA
0.001 A
0.01 A
RESISTANCE (OHMS)
Range Resolution Accuracy
60.00 MW
±(0.1%rdg + 3dgts)
6.000 MW±(0.4%rdg + 3dgts)
±(1.5%rdg + 5dgts)
Open Circuit Voltage : < 1.2VDC (<1.0VDC for 60MWrange)
600.0 W
6.000 kW
60.00 kW
600.0 kW
0.01 MW
0.001 MW
0.1 W
0.001 kW
0.01 kW
0.1 kW
All specifications are subject to change without prior notice.
CAPACITANCE
Range 1) Accuracy
60.00nF, 600.0nF
6.000mF0.8% + 3d
1.0% + 3d
60.00 Fm
2)
600.0 Fm
2)
6.000mF
2)
25.00mF
2.0% + 3d
3.5% + 5d
5.0% + 5d
6.5% + 5d
1) Accuracies with film capacitor or better
2) In manual-ranging mode, measurements not specified below 50.0mF, 0.54mF and
5.4mF for 600.0mF, 6.000mF and 25.00mF ranges respectively.

Navin com/D:Sandeep Gupta/New Catlog Dec 2011/KM-829.cdr
ELECTRICAL SPECIFICATIONS : KM 829
12 All specifications are subject to change without prior notice.
AC 60.00mV
AC 600.0mV
AC 9.999V
AC 99.99V
AC 999.9V
AC 600.0mA
AC 6000mA
AC 60.00mA
AC 600.0mA
AC 6.000A
AC 10.00A
Accuracy : 0.04% + 4d
15.00 ~ 50.00kHz
15.00 ~ 10.00kHz
15.00 ~ 3.000kHz
40mV
60mV
2.5V
25V
100V
45mA
600mA
40mA
60mA
4A
6A
LINE LEVEL FREQUENCY (Hz)
Function
Range Frequency Sensitivity
(sine Rms)
20V (tolerance : 10V ~ 36V)
55V (tolerance : 23V ~ 83V)
100V (tolerance : 59V ~ 165V)
220V (tolerance : 124V ~ 330V)
440V (tolerance : > 250V)
Indication : Bar graph segments & audible beep
tones proportional to the field strength.
Detection Frequency : 50/60 Hz
Detection Antenna : Top end of the meter
Probe-Contact EF-Detection : For more precise indication of live wires,
such as distinguishing between live and
groundconnections, use the Red(+) test
measurements.
NON-CONTACT EF-DETECTION
Typical Voltage Bar Graph Indication
Frequency 5.00Hz ~ 1.000MHz
Duty Cycle 0.00% ~ 100.0%
±(0.004%rdg + 4dgts)
2))
±(3d/kHz + 2d
LOGIC LEVEL FREQUENCY ( Hz) &
DUTY CYCLE (D%)
1) Sensitivity : 2.5Vp (Square wave) for 3V & 5V Logic Family
2) Specified Frequency : 5Hz ~ 10kHz
@DCmV
Function
1)
Accuracy
Range
50Hz ~ 60Hz
9.999 V
±(0.5%rdg + 3dgts)
Lo-Z DCV Threshold : >+1.5 VDC or < -1.0VDC nominal
Lo-Z DCV Input Impedance : Intially approx. 3.0kW,
165pF nominal; Impedance increases abruptly within a fraction
of a second as display voltage is above 50V (typical).
Ended up impedances vs display voltages typically are:
18kW@ 100V 125kW@ 300V
320kW@ 600V 500kW@ 1000V
Range Resolution Accuracy
AUTOCHECK (DCV)
99.99 V
999.9 V
±(1.0%rdg + 4dgts)
Lo-Z ACV Threshold : >3VAC (50/60Hz)nominal
Lo-Z ACV Input Impedance : Intially approx. 3.0kW,
150pF nominal Impedance increases abruptly within a fraction of a second as display
voltage is above 50V (typical). Ended up impedances vs display voltages typically are:
18kW@100V 125kW@300V
320kW@600V 460kW@1000V
50Hz ~ 60Hz
9.999 V
Resolution Accuracy
AUTOCHECK (ACV)
99.99 V
999.9 V
1)
Range
600.0 W
60.00 MW
±(0.5%rdg + 4dgts)
6.000 MW±(0.8%rdg + 3dgts)
±(2.0%rdg + 5dgts)
Open Circuit Voltage : < 1.2VDC (<1.0VDC for 60MWrange)
Resolution Accuracy
AUTOCHECK (RESISTANCE)
Range
6.000 kW
60.00 kW
600.0 kW
AUDIBLE CONTINUITY TESTER
Audible threshold
Response time
Between 20Wand 300W
< 100ms
Test Current (Typically) : 0.4mA
Open Circuit Voltage : < 3.5V DC
2.000V ±(1.0%rdg + 1dgts)
DIODE TESTER
Range Accuracy
99.99nS ±(0.8%rdg + 10dgts)
Open Circuit Voltage : < 1.2VDC (<1.0VDC for 60MWrange)
CONDUCTANCE
Range Resolution Accuracy
Type-K thermocouple range & accuracy not included.
Supplied thermocouple suitable for measurement upto 250°C.
o o
-50 C to 1000 C
o o
-58 F to 1832 F
±(0.3% + 2 C)
o
±(0.3% + 5 F)
o
TEMPERATURE (K-Type Thermocouple)
Range Accuracy
Accuracy :
Specified accuracy adds 250 digits for changes > 1.0ms
in duration
CREST MODE (INSTANTANEOUS PEAK HOLD)
At 600W, -11.76 dBm to 54.25 dBm,
Accuracy : ± 0.25dB + 2d (@40Hz -- 20kHz)
Input Impedance : 10MW, 50pF nominal
Selectable reference impedance of 4, 8, 16,
32, 50, 75, 93, 110, 125, 135, 150, 200, 250,
300, 500, 600, 800, 900, 1000, 1200W.
dBm
0.001 V
0.01 V
1 V
0.001 V
0.01 V
1 V
0.1 W
0.001 kW
0.01 kW
0.1 kW
0.001 MW
0.01 MW
0.01 nS

DC AC TRUE RMS
DC
of the waveform, and is given by the expression :
AC True RMS is a term which identifies a DMM that responds accurately to the total effective RMS value regardless
DC +
DC + AC True RMS voltage measurement, you can accurately measure the voltage values regardless of the waveforms
such as: square, sawtooth, triangle, pulse trains, spikes, as well as distorted waveforms with the presence of harmonics
and DC components / Harmonics and DC components may cause:
AC True RMS voltage is the total effective voltage having the same heating value corresponding a DC voltage. With
1) Overheated transformers, generators and motors to burn out faster than their rated life
2) Circuit breakers to trip prematurely
3) Fuses to blow
4) Neutrals to overheat due to triplen harmonics present on the neutral (180Hz)
5) Bus bars and electrical panels to vibrate
OnlyACor True RMS andAverage responding meters can introduce significant errors in many applications.
See TABLE 2 fortypical example.
WHAT IS DC + AC TRUE RMS
®
INPUT WAVEFORM DC + AC TRMS AC RMS AVERAGE RESPONSE
Sine 1.414V
0V
1.414V
0V
Half wave rectified Sine
Full wave rectified Sine
1.414V
0V
1.414V
0V
50% duty pulse train
1.000V
ERROR=
0%
CF=1.414
1.000V
ERROR=
0%
CF=1.414
1.000V
ERROR=
0%
1.000V
ERROR=
0%
CF=1.414
0.436V
ERROR=
56.4%
CF=3.247
0.421V
ERROR=
57.9%
0.707V
ERROR=
0%
CF=2.000
0.546V
ERROR=
22.7%
CF=2.591
0.550V
ERROR=
22.2%
1.000V
ERROR=
0%
CF=1.414
0.707V
ERROR=
29.3%
CF=2.000
0.785V
ERROR=
21.5%
TABLE 2. WAVEFORMS AND CREST FACTORS

The waveforms on today’s AC power lines are anything but clean. Electronic equipment such as office computers, with their switching
power supplies, produce harmonics that distort power-line waveforms. These distortions make measuring AC voltage inaccurate
when you use an averaging DMM.
USE TRUE RMS WHEN MEASURING
AC WAVEFORMS
®
Average voltage measurements work fine when the signal you’re measuring is a pure sine wave, but errors mount as the waveform
distorts. By using true RMS measurements, however, you can measure the equivalent heating effect that a voltage produces,
including the heating effects of harmonics. Table 1 shows the difference between measurements taken on averaging DMMs & those
taken on true RMS DMMs. In each case, the measured signal’s peak-to-peak value is 2V. Therefore, the peak value is 1V.
For a 1-V peak sine wave, the average & RMS values are both 0.707V. But when the input signal is no longer a sine wave, differences
between the RMS values & the average readig values occur. Those errors are most prominent when you are measuring square waves
& pulse waveforms, which are rich in harmonics.
Table 1. Average versus true RMS comparison of typical waveforms.
Waveform Actual
Pk-Pk True RMS Reading Average Reading Reading Error
Sine Wave
Triangle Wave
Pulse (25% duty Cycle)
Pulse (6.25% duty Cycle)
Square Wave
Pulse (12.5% duty Cycle)
2.000 0.707 0.707 0%
2.000 0.577 0.555 -3.8%
2.000 1.000 1.111 +11.1%
2.000 0.433 0.416 -3.8%
2.000 0.331 0.243 -26.5%
2.000 0.242 0.130 -46.2%
One limitation to making true RMS measurements is crest factor, and you should consider crest factor when making AC measurements.
Crest factor is the ratio of a waveform’s peak (”crest”) voltage to its RMS voltage. Table 2 shows the crest factors for ideal waveforms.
Table 2. Crest factors of typical waveforms.
Waveform Crest Factor
DC
Sine Wave
Pulse (12.5% duty Cycle)
1.000
1.000
1.414
1.732
Square Wave
Triangle Wave
Pulse (25% duty Cycle)
Pulse (6.25% duty Cycle)
1.732
2.646
3.873
A DMM’s specifications should tell you the maximum crest factor that the meter can handle while maintaining its measurement
accuracy. True RMS meters can handle higher crest factors when a waveform’s RMS voltage is in the middle of the meter’s range
setting. Typically, a DMM may tolerate a crest factor of 3 near the top of its scale but it might handle a crest factor of 5 that’s in the
middle of the range. Therefore, if you’re measuring waveforms with high crest factors (greater than 3), you should adjust the DMM
so the measured voltage is closest to the center of the measurement range.
Another limitation of true RMS is speed. If you’re measuring relatively clean sine waves, then you can save time & money by using as
averaging DMM. True RMS meters cost more than averaging meters and can take longer to produce measurements, especially when
measuring millivolt-level AC signals. At those low levels, true RMS meters can take several seconds to stabilize a reading. Averaging
meters won’t leave you waiting.
D:/Chhaya/Coreldraw files/True RMS when measuring AC waveforms.cdr