IDEAL 61-312, 61-314 TECHNICAL MANUAL
IDEAL INDUSTRIES, INC.
TECHNICAL MANUAL
MODELS: 61-312
61-314
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: TM61312-4
Revision: 2. Date: August 2007
Form Number TM61312-4 Rev 2 Aug 2007
TABL
E OF CONTENTS
Page
Introduction
Precautions and Safety Information 1
Symbols 1
Safety 2
Specifications 3
General Specification 3
Measurement Characteristics 4
Voltage Specification 4
Current Specifications 5
R inuity, Capacitance Specifications esistance, Diode, Cont 6
Frequency, Temperature Specification 7
Auto Power Off, Data Hold 7
P haracteristics hysical and Environmental C 8
Certifications and Compliances 8
Required Equipment 9
Basic Maintenance 10
Opening the Meter Case 10
Replacing the Battery 10
Replacing Fuses 11
Fuse Replacement 11
Cleaning 11
Performance Tests 12
Testing the Display 12
T unction esting the Voltage F 13
T ns esting the DC Current Functio 14
T 14esting the AC Current Functions /15
Testing the Resistance Function 16
T ontinuity Functions esting the Capacitance, Diode, C 17
T 17esting the Frequency Function /18
Testing the Temperature Function 18
Calibration 19
Calibrating Adjustment, DCV, ACV DCA and Temperature Functions 19/20
1
Form Number TM61312-4 Rev 2 Aug 2007
Page 1
Introduction
Warning
To av ures
oid shock or injury, do not perform the verification tests or calibration proced
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 61-312 and 61-314 series contain parts that can be damaged by static discharge.
Follow the standard practices for handling static sensitive devices.
For add isit itional information about IDEAL INDUSTRIES, INC. and it s products, and services, v
IDEAL INDUSTRIES, INC. web site at:
www.idealindustries.com
Precautions and Safety Information
Us
e the meter only as described in the Service Manual. If you do not do so, the protection
pr
ovided by the meter may be impaired. Read the “Safety Information” page before servicing this
pr
oduct.
In
this manual, a Warning identifies conditions and actions that pose hazard (s) to the user; a
Ca
ution identifies conditions and actions that may damage the meter or the test instruments.
The Symbols
Th
e symbols used on the meter and in this manual are explained in Table A.
Table A. The Symbols
Risk of electric shock
Refer to the manual. Important information.
DC measurement
Equipment protected by double or reinforced
insulation
Battery
Earth
AC measurement
Conforms to EU directives
Form Number TM61312-4 Rev 2 Aug 2007
Page 2
SAFETY
Re
view the following safety precautions to avoid injury and prevent damage to this product or
an ied.
y products connected to it. To avoid potential hazards, use the product only as specif
For operating instructions, see the 61-312 / 61-314 Digital Multimeter Instruction Manual.
CAUTION: These statements identify conditions or practices that could result in damage to
the equipment or other property
WARNIN actices that could result in personal
Use proper F 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.
Do s marked on the meter.
not Exceed the maximum rated input limits, a
El outside the range
ectric overload. Never apply a voltage to a connector on the product that is
specified for that connector.
Av or loss of life, do not connect or disconnect probes or test
oid electric shock. To avoid injury
leads while they are connected to a voltage source.
Do hock, do not operate this product in
not operate in wet/damp conditions. To avoid electric s
wet or damp conditions.
G: These statements identify conditions or pr
injury or loss of life.
use. To avoid fire hazard, use
.
Use great care when you are required to make measurements on live circuits that exceed 50V.
Form Number TM61312-4 Rev 2 Aug 2007
Page 3
SPECIFICATIONS
Al
l specifications are warranted unless noted typical and apply to the 61-312 & 61-314
St tery
ated accuracies are at 23°C±5°C at less than 80% relative humidity and without the bat
in
dicator displayed.
G
eneral specifications
Characteristics Description
Display count 3 3/4 digit liquid crystal display, max count 3999
Numeric update rate 1.5 times / sec
Polarity display Automatic
Over range display “OL” is displayed
Low battery indicator is indicated
Automatic power-off time Automatic backlight off ≈ 15minutes
1.5V AAA ×2 battery for 61-312
Power source
9.0V battery: types- NEDA 1604, JIS006P, IEC6F22 fo
61-314
r
*Maximum input voltage 600Vrms CAT II between V and COM
*Maximum floating voltage 600Vrms CAT II between any terminal and earth ground
Maximum input current 400mA between mA and COM
Overload protection mA connector 500mA (250V) fast blow fuse.
Overload protection 10A connector 10A (250V) fast blow fuse.
V connector V , V , , , , , Hz, mA, Temp
Temperature Coefficient 0.1×(Spec. Accuracy) per °C, <18°C or >28°C
Alkaline 1.5V×2 AA, ≈ 200 hours for 61-312 Alkaline 9V
Battery Life
200 hours for 61-314
, ≈
Form Number TM61312-4 Rev 2 Aug 2007
Page 4
Measurement Characteristics
Ac curacy is ±(% reading + number of digits) at 23°C ± 5°C, less than 80% R.H.
(1) DC Volts(for 61-312 / 61-314)
Range Resolution Accuracy
Over voltage
protection
400.0mV 0.1mV
4.000V 1mV
40.00V 10mV
±(0.8% reading + 4 digits) 600V rms
400.0V 100mV
600V 1V
In put Impedance: 10MΩ
(2a) AC Volts (61-312 only)
Range Resolution Accuracy
Over voltage
protection
4.000V 1mV
40.00V 10mV
400.0V 100mV
600V
1V
50-60Hz
1.2% + 5
40-400Hz
1.5% + 5
600V rms
Input Impedance: 4.5MΩ
AC
Conversion Type: 61-312: Average sensing rms indication calibrated to the sine wave
in
put.
(2b) AC Volts (61-314 only)
Range Resolution Accuracy
Over voltage
Protection
4.000V 1mV
40.00V 10mV
400.0V 100mV
600V
1V
50-60Hz
1.2% + 8
40-400Hz
1.5% + 8
600V rms
Input Impedance: 4.5MΩ
AC onding,
Conversion Type:61-314 model only: AC conversion is ac-coupled, True RMS resp
ca
librated to a sinusoidal waveform
Cr
est Factor: C.F. = Peak/RMS
For non-sinusoidal waveform, C.F. > 2 add ±1% to accuracy,
Form Number TM61312-4 Rev 2 Aug 2007
(3a) DC micro-amp and milli-amps (for 61-312 / 61-314)
Range Resolution Accuracy Input Prodection
400.0µA 0.1μA
Page 5
4000µA 1μA
±(1.2% reading + 5 digits)*
40.00mA 10μA
500mA, 250V Fast
Blow Fuse
400.0mA 0.1mA
Overload Protection: mA Input: 500mA, 250V Fast Blow fuse. (61-312 / 61-314)
(3b) DC Current (61-312 / 61-314)
Range Resolution Accuracy Input Protection
4.000A .001mA
±(1.5% reading + 5 digits)
10.00A* .01mA
10A, 250V
Fast Blow Fuse
Overload Protection: A Input: 10A, 250V Fast Blow fuse. (61-312 / 61-314)
*
Caution: Do not make high current measurements on the 10A scale for longer that 15 seconds
This should be followed by a 15 minute cool down period. Exceeding 15 seconds may cause damag
to the meter and/or the test leads.
(4a) AC micro-amp and milli-amps Current (61-312 / 61-314)
Range Resolution Accuracy Input Protection
400.0µA 0.1μA
4000µA 1μA
40.00mA 10μA
±(1.5% reading + 5 digits) *
40Hz
~ 400Hz
1
500mA, 250V
Fast Blow Fuse
400.0mA 0.1mA
Overload Protection: mA Input: 500mA, 250V Fast Blow fuse. (61-312 / 61-314)
.
e
(4b) AC Current (61-312 / 61-314)
Range Resolution Accuracy Input Protection
4.000A .001mA
10.00A* .01mA
Overload Protection: A Input: 10A (250V) Fast Blow fuse.
Conversion Type: AC conversions are ac-coupled, true rms responding, calibrated to the
AC
e wave input.
1
The specified accuracy is for sine wave at full scale and non-sine wave at half scale with cres
*
ctor up to 2.
fa
*
Caution: Do not make high current measurements on the 10A scale for longer that 15 seconds
This should be followed by a 15 minute cool down period. Exceeding 15 seconds may cause damag
to the meter and/or the test leads.
Form Number TM61312-4 Rev 2 Aug 2007
sin
±(2.0% reading + 5 digits) *
40Hz
~ 400Hz
1
10A, 250V
Fast Blow Fuse
t
.
e
Page 6
(5) Resistance (for 61-312 / 61-314)
Range Resolution Accuracy
Over voltage
400.0Ω *1 0.1Ω
4.000KΩ 1Ω
±(1.0% reading + 4 digits)
40.00KΩ 10Ω
400.0KΩ 100Ω
4.000MΩ 1KΩ ±(1.2% reading + 4 digits)
40.00MΩ *2 10KΩ ±(1.5% reading + 5 digits)
pen circuit Voltage: -1.5V approx.
O
1
< 5 digit of reading rolling.
*
2
< 2% of reading rolling.
*
(6) Diode Check and Continuity (for 61-312 / 61-314)
Range Resolution Accuracy
Max. Test
Current
1mV Not specified * <1mA, approx. 1.5V, approx.
O
verload Protection: Not specified
Co
ntinuity: Built-in buzzer sounds when resistance is less than approximately 30 Ω with a
re
sponse time of approximately 100 msec.
protection
250V rms
Max. Open
Circuit Voltage
(7) Capacitance (for 61-312 / 61-314)
Range Resolution Accuracy
Over voltage
Protection
4.000nF *1 1pF
±(3% reading + 5 digits)
40.00nF 10pF
400.0nF 100pF
4.000μF 1nF
±(3% reading + 5 digits)
250V rms
40.00μF 10nF
100μF 100nF
4.000mF *1 1μF
±(5% reading + 20 digits) *
2
40.00mF *1 10μF
1
*
In this range the accuracy is not applicable and the reading maybe rolling within spec
2
*
Specify reading
automatically. Each measurement takes about
Note: The meter selects the proper range
< half full scale of range.
ification.
one second per range. Readings >40.00μF will take ≈ 8 seconds or greater
Form Number TM61312-4 Rev 2 Aug 2007
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