IDEAL INDUSTRIES, INC.
TECHNICAL MANUAL
MODEL: 61-320
MODEL: 61-322
MODEL: 61-324
The Service Information provides the following information:
• Precautions and safety information
• Specifications
• Performance test procedure
• Calibration and calibration adjustment procedure
• Basic maintenance (cleaning, replacing the battery and fuses)
Form Number: TM61320-2-4
Revision: 2. Date: Sep 2002
Form number TM61320-2-4
Rev 2 September 2002
Page 1
Introduction
Warning
To avoid shock or injury, do not perform the verification tests or calibration procedures
described in this manual unless you are qualified to do so.
The information provided in this document is for the use of qualified personnel only.
Caution
The 61-320, 61-322, and 61-324 contain parts that can be damaged by static discharge.
Follow the standard practices for handling static sensitive devices.
For additional information about IDEAL INDUSTRIES, INC. and its products,
and services, visit IDEAL INDUSTRIES, INC. web site at:
Precautions and Safety Information
Use the meter only as described in the Users Manual. If you do not do so, the protection provided
by the meter may be impaired. Read the “Safety Information” page before servicing this product.
In this manual, a Warning identifies conditions and actions that pose hazard(s) to the user; a
Caution identifies conditions and actions that may damage the meter or the test instruments.
The Symbols
The symbols used on the meter and in this manual are explained in Table A.
Table A. The Symbols
Symbol
Meaning
Symbol
Meaning
Alternating signal
Direct signal
Battery
Earth ground
Fuse
CAT III IEC over voltage Category III
Refer to the manual. Important information.
Double insulated
Take appropriate precautions. Hazardous
voltage may be present
Form number TM61320-2-4
Rev 2 September 2002
Page 2
SAFETY
Review the following safety precautions to avoid injury and prevent damage to this product or any products
connected to it. To avoid potential hazards, use the product only as specified.
CAUTION. These statements identify conditions or practices that could result in damage to the
equipment or other property.
WARNING. These statements identify conditions or practices that could result in personal injury or
loss of life.
Specific precautions
Use proper Fuse. To avoid fire hazard, use only the fuse type and rating specified for this product.
Do not operate without covers. To avoid personal injury, do not apply any voltage or current to the
product without the covers in place.
Electric overload. Never apply a voltage to a connector on the product that is outside the range specified for that
connector.
Avoid electric shock. To avoid injury or loss of life, do not connect or disconnect probes or test leads while they are
connected to a voltage source.
Do not operate in wet/damp conditions. To avoid electric shock, do not operate this product in wet or damp
conditions.
Form number TM61320-2-4
Rev 2 September 2002
Page 3
SPECIFICATIONS
All specifications are warranted unless noted typical and apply to the 61-320, 61-322 and 61-324.
Stated accuracies are at 23ºC ± 5ºC at less than 80% relative humidity and without the battery
indicator displayed.
General specifications
Characteristics
Description
Display count
6,000
Numeric update rate
Polarity display
1.5 times / sec
Automatic
Overrange display
Low voltage indicator
Automatic power-off time
“OL” is displayed
is indicated
Automatic backlight off = 10 minutes
1.5 x 2 IEC LR03 or AAA size for 61-320
One 9V dry cell battery for 61-322 and 61-324
Power source
Maximum input voltage
Maximum floating voltage
Maximum input current
Maximum open circuit Voltage (current inputs)
Overload protection mA connector
V connector
1000V CAT III between V and COM
1000V CAT III between any terminal and earth ground
600mA between mA and COM
600V between mA and COM
1A (600V) fast blow fuse
1100 Vp V , V , Ω,
,
,
, Hz, µA
Temperature Coefficient
Battery Life
0.15 x (Spec. Accuracy) / ºC, <18ºC or >28ºC
300 hours typical (alkaline)
Form number TM61320-2-4
Rev 2 September 2002
Page 4
Measurement Characteristics
Accuracy is ± (% reading + number of digits) at 23°C ± 5°C, less than 80% R.H.
DC Volts
Over voltage
protection
Range
Resolution
Accuracy
600.0mV
6.000V
60.00V
600.0V
1000V
100µV
1mV
±(0.5% + 2dgt)
1000V rms
10mV
100mV
1V
AC Volts
Over voltage
protection
Range
Resolution
Accuracy
600.0mV
6.000V
60.00V
600.0V
750V
100µV
1mV
Unspecified
±(0.9% + 5dgt)
50Hz ~ 500Hz
*
1000V rms
10mV
100mV
1V
Input Impedance: 10MΩ // less than 100pF.
CMRR / NMRR: (Common Mode Rejection Ratio)
(Normal Mode Rejection Ratio)
VAC: CMRR > 60dB at DC, 50Hz / 60Hz
VDC: CMRR > 100dB at DC, 50Hz / 60Hz
NMRR > 50dB at DC, 50Hz / 60Hz
AC Conversion Type: 61-320: Average sensing rms indication.
61-322 / 61-324: AC conversions are ac-coupled, true rms responding, calibrated to
the sine wave input.
* The basic accuracy is specified for sine wave below 4000 counts. Over 4000 counts, need to add 0.6% to the
accuracy for non-sine waves below 2000 counts, refer to the following for accuracy:
Crest Factor (C.F.):
+1.5% addition error for C.F. from 1.4 to 3
+3.0% addition error for C.F. from 3 to 4 where C.F.=Peak / RMS
Form number TM61320-2-4
Rev 2 September 2002
Page 5
DC Current
Range
Over voltage
protection
Resolution
Accuracy
600.0µA
6000µA
60.00mA
600.0mA
1mV
1mV
600V rms1A (600) Fast
blow fuse
±(1.0%+2 dgt)
10mV
100mV
AC Current
Range
Over voltage
protection
Resolution
Accuracy
600.0µA
6000µA
60.00mA
600.0mA
1mV
1mV
600V rms
1A (600) Fast blow
fuse
±(1.5%+2 dgt)
50Hz ~ 500Hz *
10mV
100mV
Voltage Burden: µA: <4mV / µA
mA: 2V max.
* AC Conversion Type: Conversion type and additional specification are same as DC/AC Voltage.
Resistance
Overload
protection
Range
Accuracy
600.0Ω
6.000K Ω
60.00K Ω
600.0K Ω
6.000M Ω
60.00M Ω *
±(0.7%+2 dgt)
600V rms
±(1.0%+2 dgt)
±(1.5%+2 dgt)
Open circuit Voltage: -1.3V approx.
* < 2% of reading rolling.
Diode Check and Continuity
Overload
protection
Range
Resolution
Accuracy
±(1.5% + 5 dgt)*
10 mV
600V rms
* For 0.4V ~ 0.8V
Max.Test Current: 1.5mA
Max. Open Circuit Voltage: 3V
Continuity: Built-in buzzer sounds when resistance is less than approximately 100 Ω. Response time is
approximately 100 msec.
Form number TM61320-2-4
Rev 2 September 2002
Page 6
Frequency
Range
Overload
protection
Sensitivity
Accuracy
6000Hz
60.00KHz
600.0KHz
6.000MHz
60.00MHz
100mV rms *
Frequency :
0.01%±1digit
600V rms
250mV rms
1V rms
* Less than 20Hz, the sensitivity is 1.5V rms.
Capacitance
Overload
protection
Range
Accuracy
6.000nF
60.00nF
600.0nF
6.000µF
60.00µF
600.0µF
6.000mF *
±(1.9% + 8 dgt)
600V rms
* < 100 dgt of reading rolling.
Form number TM61320-2-4
Rev 2 September 2002
Page 7
Physical and Environmental Characteristics
Characteristics
Description
158mm x 76mm x 38mm
164mm x 82mm x 44mm (with holster)
Dimensions (H x W x D)
Weight (with battery)
With holster
0.3Kg
0.5Kg
Environmental Characteristics
Temperature operating
Non-Operating
Description
0 to + 50ºC
-20 to + 60ºC
Humidity (operating)
Altitude Operating
Non-Operating
< 80% R.H.
2,000 m (6560 ft.)
12,300 m (40354 ft.)
MIL-T-28800E TYPE II Class 5
2.66gRMS, 5 to 500 Hz, 3axes
(10 minutes each)
Vibration & shock Operating
Indoor Use
Indoor Use
Certifications and compliances
Safety
Designed to IEC 1010-1, UL3111-1 and CSA specifications
V / Ω / µA: Category III 1000 Volts
Input rating
mA: Category III 600 Volts
Over voltage category
CAT III: Distribution level mains, fixed installation.
CAT II: Local level mains, appliances, portable equipment.
CAT I: Signal level, special equipment or parts of equipment,
telecommunication, electronics.
Do not operate in environments where conductive Pollutants may
be present.
Pollution Degree 2
Meets the intent of Directive 89/336/EEC for Electromagnetic
Compatibility and Low Voltage Directive 73/23/EEC for Product
Safety. Compliance was demonstrated to the following
specifications as listed in the official Journal
of the European Communities:
EC Declaration of Conformity
En 55011 Class A: Radiated and Conducted Emissions.
EN 50082-1 Immunity: IEC 801-2 Electrostatic Discharge
IEC 801-3 RF Radiated
EN 61010-1 Safety requirements for electrical equipment for
measurement, control, and laboratory use.
Form number TM61320-2-4
Rev 2 September 2002
Page 8
Required Equipment
Required equipment is listed in Table B. If the recommended models are not available, equipment with
equivalent specifications may be used.
Repairs or servicing should be performed only by qualified personnel.
Table B. Required Equipment
Equipment
Required Characteristics
Recommended Model
Calibrator
AC Voltage Range: 0-750 VAC
Fluke 5500 or Wavetek
9100 Calibrator or
equivalent
Accuracy: ±0.07% (Basic)
Frequency Range: 40 ~ 1KHz
Accuracy: ±2%
DC Voltage Range: 0-1000V DC
Accuracy: ±0.006% (Basic)
Current Range: 0 ~ 10A
Accuracy: AC (40Hz to 1KHz): ±0.08% (Basic)
DC: ±0.02% (Basic)
Frequency Source: 5.00Hz ~ 100MHz
Accuracy: ±0.001%
Amplitude: 0.5V p-p ~ 1.0V p-p (square wave)
Accuracy: ±5%
Resistance range: 1Ω ~ 100M Ω
Accuracy: ±0.03% (Basic)
Capacitance Range: 1PF ~ 10mF
Accuracy: ±0.10% (Basic)
Form number TM61320-2-4
Rev 2 September 2002
Page 9
Basic Maintenance
Warning
To avoid shock, remove the test leads and any input signals before opening the case or replacing
the battery or fuses.
Opening the Meter Case
Caution
To avoid unintentional short circuit, always place the uncovered meter assembly on a protective
surface. When the case of the meter is open, circuit connections are exposed.
To open the meter case, refer to Figure 1A and do the following:
1. Disconnect test leads from any live source, turn the rotary switch to OFF, and remove the test leads from
the front terminals.
2. Remove the battery door by using a screwdriver to turn the battery door screws turn counter-clockwise.
3. The case bottom is secured to the case top by four screws and two internal snaps (at the LCD end).
Using a screwdriver, remove the four screws.
Replacing the Battery
The meter is powered by 1.5V x 2 batteries for 61-320 and a single 9V battery for 61-322 and 61-324.
To replace the battery, refer to Figure 1A.
Figure 1A
Form number TM61320-2-4
Rev 2 September 2002
Page 10
Testing Fuses
To test the internal fuses of the meter:
1. Turn the rotary selector switch to the Ω position.
2. To test FS1, plug a test lead into VΩHz input terminal and touch the probe to the mA input terminal. The
display should indicate between 0.0 to 0.2 Ω. FS1 (1A 600V - Bussmann BBS-1 recommended). If display
reads higher than 0.2Ω, replace the fuse.
Fuse Replacement
Refer to Figure 1B to replace the fuse:
Figure 1B
Use only a fuse with the amperage, interrupt, voltage, and speed rating specified.
Fuse rating: 1A, 600V, Fast
Replacing Fuses
Warning
To avoid electrical shock, remove the test leads and any input signals before replacing the
battery or fuses. To prevent damage or injury, INSTALL ONLY quick acting fuses with the
following Amp/Volt current interrupt rating:
FS1 Fuse: 1A, 600V, FAST. Minimum interrupt rating: 10,000A.
Cleaning
Warning
To avoid electrical shock or damage to the meter, never allow water inside the case. To avoid
damaging the meter’s housing, never apply solvents to the meter.
Form number TM61320-2-4
Rev 2 September 2002
Page 11
Performance Tests
The following performance tests verify the complete operability of the meter and check the accuracy of each
meter function against the meter’s specifications.
Accuracy specifications are valid for a period of one year after calibration, when measured at an operating
temperature of 18ºC to 28ºC and at a maximum of 80% relative humidity.
To perform the following tests, it is not necessary to open the case; no adjustments are necessary. Merely
make the required connections, apply the designated inputs, and determine if the reading on the meter display
falls within the acceptable range indicated.
If the meter fails any of these tests, it needs calibration adjustment or repair.
Testing the Display
Press “HOLD” key while turning the meter on from the “OFF” position to hold the display in the Display Test Mode.
Compare the display with the example in Figure 2. Turn off the meter to escape the test mode.
LCD Graphics 61-324
Figure 2 Display Test
Testing the Voltage Function
To verify accuracy in the AC and DC voltage ranges, do the following:
1. Turn the rotary switch to “V ” position.
2. Connect the calibrator to the VΩ and COM inputs on the meter.
3. Set the calibrator for the voltage and frequency from step 1 to 8 in Table 1.
4. Compare the reading on the meter display with the display reading shown in Table 1.
5. If the display reading falls outside of the range shown in Table 1, the meter does not meet specification.
Form number TM61320-2-4
Rev 2 September 2002
Page 12
Table 1 AC Voltage Test:
Step
Input
5.800V
5.800V
58.00V
58.00V
580.0V
580.0V
750V
Frequency
50Hz
Reading
1
2
3
4
5
6
7
8
5.743 to 5.857
5.743 to 5.857
57.43 to 58.57
57.43 to 58.57
574.3 to 585.7
574.3 to 585.7
738 to 762
500Hz
50Hz
500Hz
50Hz
500Hz
50Hz
750V
500Hz
738 to 762
6. Turn the rotary switch to “V ” position.
7. Set the calibrator for the voltage from step 1 to 6 in Table 2.
8. Compare the reading on the meter display with the display reading shown in Table 2.
9. If the display reading falls outside of the range shown in Table 2, the meter does not meet specification.
Table 2 DC Voltage Test:
Step
Input
Reading
1
580.0mV
576.9 to 583.1
2
3
4
5
6
-580.0mV
5.800V
58.00V
580.0V
900V
–576.9 to –583.1
5.769 to 5.831
57.69 to 58.31
576.9 to 583.1
894 to 906
Testing the Resistance Function
To verify the accuracy of the resistance function, do the following:
1. Connect the calibrator to VΩHz and COM on the meter.
2. Turn the rotary switch to Ω.
3. Apply the inputs for step 1-6 in Table 3.
4. Compare the meter display readings to the display readings in Table 3.
5. If the display reading falls outside of the range shown in Table 3, the meter does not meet specification.
Table 3 Ω Resistance Test:
Step
Source
Reading
1
2
3
580.0 Ω
5.800K Ω
58.00K Ω
575.7 to 584.3
5.757 to 5.843
57.57 to 58.43
4
5
6
580.0K Ω
5.800M Ω
58.00M Ω
575.7 to 584.3
5.740 to 5.860
57.11 to 58.59
* Lead resistance on the 400Ω range is not included in error.
Form number TM61320-2-4
Rev 2 September 2002
Page 13
Testing the Capacitance Function
The meter measures capacitance by charging the capacitor with a known direct current, measuring the
resultant voltage, and calculating the capacitance. If the same capacitance is measured on an impedance
bridge, a different reading may result. This variance is likely to be greater at higher frequencies.
To verify the accuracy of the capacitance measuring function, do the following:
1. Apply the capacitor to the VΩHz and COM inputs on the meter for steps 1 through 7 in Table 4.
2. Turn the rotary switch to
.
3. Compare the reading on the meter display to the reading in Table 4.
Note: The meter selects the proper range automatically. Each measurement takes about one second
per range, 5mF takes about 4.5 seconds.
4. If the display reading falls outside of the range shown in Table 4, the meter does not meet specification.
Table 4 Capacitance Test:
Step
Source
5.800nF
58.00nF
580.0nF
5.800µF
58.00µF
580.0µF
5.800mF
Reading
1
2
3
4
5
6
7
5.682 to 5.912
56.82 to 59.12
568.2 to 591.2
5.682 to 5.912
56.82 to 59.12
568.2 to 591.2
5.682 to 5.912
Checking the Diode Test Function
To check the diode test function, do the following:
1. Connect the calibrator to the VΩHz and COM inputs on the meter.
2. Turn the rotary switch to
3. Apply 0.500V DC.
.
The meter display should read approx. 0.500V dc.
4. Apply a 50Ω resistor to the meter, the built-in beeper alarms.
Testing the Milliamp (mA) Function (for 61-322 and 61-324)
To verify the accuracy of AC current measurement functions, do the following:
1. Connect the calibrator to the mA and COM inputs on the meter.
2. Turn the rotary switch to mA
.
3. Apply the inputs for steps 1-4 in Table 5.
4. For each input, compare the readings on the meter display to the reading in Table 5.
5. If the display reading falls outside of the range shown in the Table 5, the meter does not meet specification.
Form number TM61320-2-4
Rev 2 September 2002
Page 14
Table 5 AC mA Test:
Step
Source
58.00mA
58.00mA
580.0mA
580.0mA
Frequency
50Hz
Reading
56.93 to 59.07
1
2
3
4
500Hz
50Hz
56.93 to 59.07
569.3 to 590.7
569.3 to 590.7
500Hz
6. Turn the rotary switch to mA
.
7. Apply the inputs for steps 1-2 in Table 6.
8. For each input, compare the reading on the meter display to the reading in Table 6.
9. If the display reading falls outside of the range shown in Table 6, the meter does not meet specification.
Table 6 DC Current Test:
Step
Source
Reading
57.40 to 58.60
1
58.00mA
2
580.0mA
574.0 to 586.0
Testing the microamp Function
1. Turn the rotary switch to µA
.
2. Apply the inputs for steps 1-2 in Table 7.
3. For each input, compare the reading on the meter display to the reading for your meter in Table 7.
4. If the display reading falls outside of the range shown in Table 7, the meter does not meet specification.
Table 7 DC µA Test:
Step
Source
Reading
574.0 to 586.0
1
580µA
2
5800µA
5740 to 5860
Testing the Frequency Function
To verify the accuracy of the meter’s frequency function, do the following:
1. Connect the calibrator to the VΩ and COM inputs on the meter.
Note: The accuracy of the calibrator’s frequency function must be appropriate for the specified
accuracy of the meter.
2. Set the rotary switch to Hz.
3. Set the function generator for the square wave voltage and frequency for steps 1-5 of Table 8.
4. Compare the reading on the meter display with the display reading shown in Table 8.
5. If the display reading falls outside of the range shown in Table 8, the meter does not meet specification.
Form number TM61320-2-4
Rev 2 September 2002
Page 15
Table 8 Frequency Test:
Step
Source
Level
Reading
1
2
3
4
5
5.600KHz
56.00KHz
560.0KHz
5.600MHz
56.00MHz
100mV rms 5.598 to 5.602
100mV rms 55.98 to 56.02
100mV rms 559.8 to 56.02
250mV rms 5.598 to 5.602
1V rms
55.98 to 56.02
Calibration
Calibrate the meter once a year to ensure that it performs according to specifications.
Perform calibration at an ambient temperature of 23ºC ±2ºC and relative humidity of 75% or less
Calibration for the Model 61-320, 61-322 and 61-324:
1. Disconnect the test leads and turn the meter off. Remove the test leads from the front terminals.
2. Position the meter face down. Remove the screws from the case bottom.
3. Lift the end of the case bottom until it gently unsnaps from the case top at the end nearest the LCD.
4. Loosen the screws that hold the circuit board in place and gently lift the board to access the calibration pots.
DO NOT REMOVE THE SCREWS.
(A) DCV Calibration (Adjust VR1 – Figure 3)
5. Set the circuit board rotary switch “arrow” to the “V ” position of circuit board.
6. Set the output of DC calibrator for 300.0V ±0.02% and connect to VΩHz and COM input terminals
on the meter.
7. Using a small flat-tipped screw driver, adjust the potentiometer VR1 until the display reads 300.0 or 299.9
8. Disconnect the DC calibrator from the meter.
(B) ACV Calibration (Adjust VR2 – Figure 3)
9. Set the circuit board rotary switch “arrow” to the “V ” position of circuit board.
10. Set the output of AC calibration for 300V 50Hz and connect to VΩHz and COM input terminals on
the meter.
11. Using a small flat-tipped screw driver, adjust the potentiometer VR2 until the display reads 300.0 or
299.9
12. Disconnect the AC calibrator from the meter.
Form number TM61320-2-4
Rev 2 September 2002
Page 16
Figure 3 - Calibration Adjustment Points
Form number TM61320-2-4
Rev 2 September 2002
Page 17
Form number TM61320-2-4
Rev 2 September 2002
|