IDEAL 61-354 (TRMS) User manual

IDEAL INDUSTRIES, INC.
TECHNICAL MANUAL
MODEL: 61-354 (TRMS)
The Service Information provides the following information:
●Precautions and safety information
●Specifications
●Basic maintenance (cleaning, replacing the battery and fuses)
●Performance test procedures
●Calibration and calibration adjustment procedures
Form number: TM61354
Revision: 2. Date: July 2006
Form number TM61354 Rev 2 July 2006

TABLE OF CONTENTS
Title Page
Introduction 1
Precautions and Safety Information 1
Symbols 1
Safety 2
Specifications 3
General Specification 3
Measurement Characteristics 4
Voltage Specification 4
Current Specifications 4
Resistance, Diode, Frequency Specifications 5
Capacitance Specification 6
Auto Power Off, Display Auto Power Off 6
Disable Auto Power Off 6
Physical and environment characteristics 7
Certification and compliance 7
Required Equipment 8
Basic Maintenance 9
Opening the Meter Case 9
Replacing the Battery 9
Testing Fuses 10
Fuses Replacement 10
Replacing Fuses 10
Cleaning 10
Performance Tests 11
Testing the Display 11
Testing the Voltage Function 12
Testing the Resistance Function 13
Testing the Capacitance Function 13
Checking the Diode Test Function 13
Testing the AC Current Function 14
Testing the DC Current Function 14
Testing Frequency Function 14
Calibration 15
Calibrating DCV, ACV, DCA Functions 15
Calibration Adjustment Points 16
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Introduction
Warning
To avoid shock or injury, do not perform the verification tests or calibration
procedures described in the manual unless you are qualified to do so.
The information provided in this document is for the use
of qualified personnel only.
Caution
The 61-350 serials 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:
www.idealindustries.com
Precautions and Safety Information
Use the Meter only as described in the Service 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
Risk of electric shock
See instruction card for details
DC measurement
Equipment protected by double or reinforced
insulation
Battery
Earth
AC measurement
Conforms to EU directives
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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 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.
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SPECIFICATIONS
All specifications are warranted unless noted typical and apply to the 61-354.
Stated accuracies are at 23°C±5°C at less than 80% relative humidity and without the battery indicator
displayed.
General specifications
Characteristics Description
Display count 3 1/2
Numeric update rate 1.5 times / sec
Polarity display Automatic
Overrange display “OL” is display
Low voltage indicator is indicated
Automatic power-off time Automatic backslit off = 10 minutes
Power source 1.5V×2 batteries
Maximum input voltage 600V CAT III between V and COM
Maximum floating voltage 600V CAT III between any terminal and earth ground
Maximum input current 10A between A and COM
Maximum open circuit Voltage (current inputs) 600V between A and COM
Overload protection A connector 10A (500V) fast blow fuse.
V connector V, V , , , , , Hz
Temperature Coefficient 0.2×(Spec. Accuracy) / °C, <18°C or >28°C
Battery Life Alkaline 1.5V×2 AAA size 220 hours
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Measurement Characteristics
Accuracy is ±(% reading + number of digits) at 23°C ± 5°C, less than 80% R.H.
(1) DC Volts
Range Resolution Accuracy Over voltage
protection
200mV 100µV
2V 1mV
20V 10mV
200V 100mV
1000V 1V
±(0.5% reading + 2 digits) DC 1000V
Input Impedance: 10M(over 1000Min 200mV range).
(2) AC Volts
Range Resolution Accuracy Over voltage protection
200mV 0.1mV Unspecified
2V 1mV
20V 10mV
200V 100mV
750V 1V
±(1.5% reading + 5 digits) 750V rms
Input Impedance: 10M// less than 100pF.
Frequency Response: 50Hz~500Hz
AC Conversion Type: AC conversions are ac-coupled true rms responding, calibrated to the rms value
sine wave input.
Crest Factor: C.F. = Peak/RMS
+1.5% addition error for C.F. from 1.4 to 3.
+3.0% addition error for C.F. from 3 to 4.
(3) DC Current
Range Resolution Accuracy Voltage Burden
2A 1mA
10A 10mA
±(1.0% reading + 2 digits) 2V max
Overload Protection: A input: 10A (500V)
(4) AC Current
Range Resolution Accuracy Voltage Burden
2A 1mA
10A 10mA
±(1.5% reading + 5 digits)*12V max
Frequency Response: 50Hz~500Hz
Overload Protection: A input: 10A (500V)
*1AC Conversion Type: Conversions type and additional specification are same as AC Voltage.
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(5) Resistance
Range Resolution Accuracy Over voltage
protection
2000.1
2K1
20K10
200K100
±(0.7% reading + 3 digits)
2M1K±(1.0% reading + 3 digits)
20M*10K±(1.5% reading + 3 digits)
600V rms
Open circuit Voltage: -1.3V approx.
*<100 dgt of reading rolling.
(6) Diode Check and Continuity
Range Resolution Accuracy Max. Test
Current
Max. Open
Circuit Voltage
10mV ±(1.5% reading + 5 digits)* 1.5mA 2V
* For 0.4V ~ 0.8V
Overload Protection: 600V rms max.
Continuity: Built-in buzzer sounds when measured resistance is less than 270and sound off when
measured resistance is more than >850.
Between 270to 850the buzzer maybe sound or off either.
(7) Frequency
Range Resolution Sensitivity ** Accuracy Overload
protection
2000Hz 1Hz
20KHz 10Hz
200KHz 100Hz
100mV rms *
2MHz 1KHz 250mV rms
20MHz 10KHz 1V rms
Frequency:
0.01% ± 2 digit 600V rms
*Less than 20Hz the sensitivity is 1.5V rms.
** Max. Sensitivity: <5 Vac rms
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(8) Capacitance
Range Resolution Accuracy Over voltage
Protection
2nF 1pF
20nF 10pF
200nF 100pF
2F 1nF
20F 10nF
200F 100nF
2mF*1F
±(1.9% reading + 8 digits) 600V rms
*<100 dgt of reading rolling.
(9) Auto Power Off (APO)
If the meter idles for more than 10 minutes, the meter automatically turns the power off. When this
happens, the state (non-logic measurement) of the meter is saved, the meter can be turned back on by
pressing any switch or changing the rotary switch. If the meter is Re-Powered by pressing a switch, the
LCD display the saved state, press the Hold switch to disable the hold state. The meter will alarm 15
seconds before automatically turning power off, any key press or rotary change will reset Auto-Power-Off.
(10) Disable Auto Power Off
In order to disable auto power off function, power up the meter while pressing down any switch other than
the “Hold” and “NCV” switch.
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Physical and Environmental Characteristics
Characteristics Description
Dimensions (H×W×D) 2.9 Inch×6.14 Inch×1.34 Inch (without holster)
3.15 Inch×6.45 Inch×1.73 Inch (with holster)
Weight (with battery) 0.25Kg
With holster 0.35Kg
Environmental characteristics Description
Temperature operating 0 to +50°C
Non-Operating -20 to +60°C
Humidity (operating) <80% R.H.
Altitude Operating 2,000M (6560 ft.)
Non-Operating 12,300M (40354 ft.)
Vibration & shock Operating
MIL-T-28800E TYPE II Class 5
2.66gRMS, 5 to 500Hz, 3axes
(10 minutes each)
Indoor Use Indoor Use
Certifications and compliances
Safety Designed to ICE 1010-1, UL3111-1 and CSA specifications
V / : Category III 600 Volts
Input rating V / : Category II 1000 Volts
CAT III: Distribution level mains, fixed installation.
CAT II: Local level mains, appliances, portable equipment
Over voltage category
CAT I: Signal level, special equipment or parts of equipment,
telecommunication, electronics.
Pollution Degree 2 Do not operate in environments where conductive
Pollutants may be present.
EC Declaration
of Conformity
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:
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.
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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 ~ 750V AC
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: 1~ 100M
Accuracy: ±0.03% (Basic)
Capacitance Range: 1pF ~ 10mF
Accuracy: ±0.10% (Basic)
Fluke 5500 or Wavetek
9100 Calibrator or
equipment
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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 shock, 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 Figure 1 and do the following:
1. Disconnect test leads from any live source, turn the rotary switch to OFF, and remove the test leads
from front terminals.
2. Remove the battery door by using a Phillips-head screwdriver to turn the battery door screws turn
counter-clockwise.
3. The case bottom is secured to the case top by four screws. Using a Phillips-head screwdriver,
remove the four screws.
Replacing the Battery
The Meter is powered by 1.5V x 2 batteries.
Figure 1
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Testing Fuses
To test the internal fuses of the meter.
1. Turn the rotary selector switch to the position.
2. To test FS1, plug a test lead into VHz input terminal, and touch the probe to the Ainput terminal. The
display should indicate between 0.0 to 0.2. FS1 (10A 500V) (Bussmann BBS-1 recommended). If display
reads higher than 0.2, replace the fuse.
Fuse Replacement
Refer to the following figure to replace fuse:
Use only a fuse with the amperage, interrupt, voltage, and speed rating specified.
Fuse rating: 10A, 500V, 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: 10A, 500V, 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.
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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 18°C to 28°C and 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, 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 61-354
Figure 2 Display Test
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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 VHz 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.
Table 1 AC Voltage Test:
Step Input Frequency Reading
1 1.500V 50Hz 1.472V to 1.528V
2 1.500V 300Hz 1.472V to 1.528V
3 15.00V 50Hz 14.72V to 15.28V
4 15.00V 500Hz 14.72V to 15.28V
5 150.0V 50Hz 147.2V to 152.8V
6 150.0V 500Hz 147.2V to 152.8V
7 750V 50Hz 734V to 766V
8 750V 500Hz 734V to 766V
6. Turn the rotary switch to “V” position.
7. Set the calibration 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
1 150.0mV 149.0V to 151.0V
2 -150.0mV -149.0V to -151.0V
3 1.500V 1.490V to 1.510V
4 15.00V 14.90V to15.10V
5 150.0V 149.0V to 151.0V
6 990V 983V to 997V
Testing the Resistance Function
To verify the accuracy of the resistance function, do the following:
1. Connect the Calibrator to VHz and COM on the Meter.
2. Turn the rotary switch to .
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.
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Table 3 Resistance Test:
Step Source Reading
1 150.0148.6to 151.4
2 1.500K1.486Kto 1.514K
3 15.00K14.86Kto 15.14K
4 150.0K148.6Kto 151.4K
5 1.500M1.482Mto 1.518M
6 15.00M14.74Mto 15.26M
Lead resistance on the 200range is not included in error.
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 VHz 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, 2mF 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 Reading
1 1.500nF 1.463nF to 1.537nF
2 15.00nF 14.63nF to 15.37nF
3 150.0nF 146.3nF to 153.7nF
4 1.500µF 1.463µF to 1.537µF
5 15.00µF 14.63µF to 15.37µF
6 150.0µF 146.3µF to 153.7µF
7 1.500mF 1.463mF to 1.537mF
Checking the Diode Test Function
To check the diode test function, do the following:
1. Connect the Calibrator to the VHz and COM inputs on the Meter.
2. Turn the rotary switch to .
3. Apply .5V DC.
The meter display should read approx. .5V dc.
4. Built-in buzzer sounds when measured resistance is less than 270and sound off when measured
resistance is more than >850
Between 270to 850the buzzer maybe sound or off either.
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Testing the amp (A) Function
To verify the accuracy of AC current measurement functions, do the following:
1.Connect the Calibrator to the Aand COM inputs on the Meter.
2. Turn the rotary switch to A.
3. Apply the inputs for steps 1-4 in Table 5.
4. For each input, compare the reading on the Meter display to the reading for your Meter in Table 5.
5. If the display reading falls outside of the range shown in Table 5, the meter does not meet specification.
Table 5 AC Current Test:
Step Source Frequency Reading
1 1.500A 50Hz 1.472A to 1.528A
2 1.500A 500Hz 1.472A to 1.528A
3 10.00A 50Hz 9.80A to 10.20A
4 10.00A 500Hz 9.80A to 10.20A
6. Turn the rotary switch to A.
7. Set the calibration for the current from step 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
1 1.500A 1.483A to 1.517A
2 10.00A 9.88A to 10.12A
Testing the Frequency Function
To verify the accuracy of the Meter’s frequency function, do the following:
1. Connect the Calibrator to the VHz 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 Calibrator for the sine 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.
Table 8 Frequency Test:
Step Soure Level Reading
1 1500Hz 100mV rms 1498Hz to 1502Hz
2 15.00KHz 100mV rms 14.98KHz to 15.02KHz
3 150.0KHz 100mV rms 149.8KHz to 150.2KHz
4 1.500MHz 250mV rms 1.498MHz to 1.502MHz
5 15.00MHz 1V rms 14.98MHz to 15.02MHz
*Max. level: <5 Vac rms
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Calibration Procedure
Recalibrate your meter:
It is recommended that the multimeter be calibrated once each year.
1. Perform calibration at an ambient temperature of 23°C±2°C and a relative humidity of 75% or less.
2. Disconnect the test leads and turn the meter off. Remove the test leads from the front terminals.
3. Position the meter face down. Remove the four screws from the case bottom.
4. Remove case bottom.
(A) DCV Calibration (Adjust VR2)
5. Set the circuit board rotary switch "arrow" to the " V " position of circuit board.
6. Set the output of DC calibrator for 150.0V±0.02% and connect to VHz and COM input terminals on
meter.
7. Using a small flat-tipped screwdriver adjust the potentiometer VR2 until the display reads 149.9 to
150.1.
8. Disconnect the DC calibrator from the meter.
(B) ACV Calibration (Adjust VR1, VR4)
9. Set the circuit board rotary switch "arrow" to the " V " position of circuit board.
10. Using a small flat-tipped screwdriver adjust potentiometer VR4 until the display reads 0.000 to 0.003.
11. Set the output of AC calibration for 150.0V 100Hz and connect to VHz and COM input terminals on
meter.
12. Using a small flat-tipped screwdriver adjust the potentiometer VR1 until the display reads 149.9 to
150.1.
13. Disconnect the AC calibrator from the meter.
(C) DCA Calibration (Adjust VR66, VR67, VR68)
14. Set the circuit board rotary switch “arrow” to the Aposition circuit board.
15. Using a small flat-tipped screwdriver adjust potentiometer VR67 until display reads +0.001 to -0.001.
16. Set the output of DCA calibrator for 1.5A and connect to Aand COM input terminals on meter.
17. Using a small flat-tipped screwdriver adjust potentiometer VR66 until the display reads 1.499 to 1.501.
18. Repeat 15~17.
19. Set the output of DCA calibrator for 10.0A and input terminals on meter.
20. Using a small flat-tipped screwdriver adjust potentiometer VR68 until the display reads 9.99A to
10.00A.
21. Disconnect the DCA calibrator from the meter.
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VR1
VR67 VR2
VR68
VR66
Figure 5 61-354 Calibration Adjustment Points
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