IDEAL INDUSTRIES 61-795 User manual

Form number TM61795 Rev 4 July 2011
IDEAL INDUSTRIES INC.
TECHNICAL MANUAL
MODEL: 61-795
The Service Information provides the following:
•Precautions and safety information
• Specifications
• Performance test procedure
• Calibration and calibration adjustment procedure
• Basic maintenance (replacing the battery and fuses)
Form number: TM61795
Revision: 4. Date: July 2011 Page i

Form number TM61795 Rev 4 July 2011
TABLE OF CONTENTS
Title
Page
Introduction
1
Precautions and Safety Information
1
Safety Information
1
Required Equipment
2
Performance Verification
3
Table 1 Performance Verification Model 61-795
3
Calibration
4/5
Table 2 Calibration Range Inputs Model 61-795
5
Replacing the Battery
5
Replacing Fuses
5
Circuit Board Drawing
6
Battery and Fuse Replacement Drawing
7
Revision 4:
Remove on page 3 Low ohms source check.
This check is not needed to verify the performance of the instrument.

Form number TM61795 Rev 4 July 2011
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 61-795 contains parts that can be damaged by static discharge.
Followthe standard practices for handling static sensitive devices.
For additional information about IDEAL INDUSTRIES and its products,
and services, visit IDEAL INDUSTRIES web site at:
www.idealindustries.com
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.
It is recommended that you read through the Operation or User manual before starting. Not all Caution,
Warning, or Danger precautions are listed in this manual.
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.
Avoid electric shock. To avoid injury or loss of life, do not come in contact with tested material or probes
while the Test Button is pressed. High Voltage potentials are present during Insulation Tests..
Do not operate in wet/damp conditions. To avoid electric shock, do not operate this product in wet or
damp conditions.

Form number TM61795 Rev 4 July 2011
Page 2
Required Equipment
Required equipment is listed in Table B. If the recommended
models are not available, equipment with equivalent specifications may be used.
Only qualified personnel should perform repairs or servicing.
Table B. Required Equipment
Equipment
Required Characteristics
Recommended
Model
Calibrator
AC Voltage Range: 0-750V ac
Accuracy: ±0.04% (Basic)
Frequency Range: 10 ~ 500KHz
Accuracy: ±2%
DC Voltage Range: 0-1000V dc
Accuracy: ±0.006% (Basic)
Current Range: 0 ~ 10A
Accuracy:
AC (45Hz to 65Hz): ±0.05% (Basic)
DC: ±0.008% (Basic)
Frequency Source:
0.01Hz ~ 2.0000MHz
Accuracy: ±0.0025%
Amplitude:
0.5V p-p ~ 1.0V p-p (square wave)
Accuracy: ±5%(45Hz-1KHz)
Ωrange: 0.01Ω~ 330M
Accuracy: ±0.007% (Basic)
Capacitance Range: 1pF ~ 1.1mF
Accuracy: ±0.19% (Basic)
TemperatureRange: -200°C ~1800°C
Accuracy: ±0.1°C (Basic)
Fluke 5500A
Calibrator or
equivalent
Required fixed resistors: 0 , 5 , 19 , 190 , 0.0M , 1M , 10M , 100M , 1000M
Simulated Test leads: With a total resistance of < .1 ±10m or .05Ω per simulated lead.

Form number TM61795 Rev 4 July 2011
Page 3
PERFORMANCE VERIFICATIONS
Perform the following analysis, if the meter conforms to the limits listed in Table 1 the meter is functioning
correctly. If the meter does not conform to any of the listed limits, the calibration procedure must be
performed.
Check the fuse as a BBS, 1A/600V, 10.4*35 (0.41x1.38 inch) UL/CSA, interrupting rating 10kA.
Check case, leads, display, etc, for any defects.
Table 1 Performance Verification: Model 61-795
Function Setting
/Range
Apply
Reading
Specification
DCV
550V DC
547.2 to 552.8
[±0.5% ±1 digits]
ACV
550V AC
545.2 to 554.8
[±0.8% ±4 digits]
Continuity Ω/
<30Ω
Buzzer sounds
Not specified
Resistance:
LOΩ
Simulated leads
.08 to .12
[±0.02Ω + 0.05 per lead]
LOΩ
0Ω
-0.03 to +0.03
[±0.03Ω]
LOΩ
5Ω
4.87 to 5.13
[±2.0% ±3 digits]
LOΩ
19Ω
18.59 to 19.41
[±2.0% ±3 digits]
Ω/
190Ω
185.9 to 194.1
[±2.0% ±3 digits]
Insulation Resistance:
MΩ, 250V
10MΩ
250 to 275Vdc
Source Check
MΩ, 500V
10MΩ
500 to 550Vdc
Source Check
MΩ 1000V
10MΩ
1000 to 1100Vdc
Source Check
MΩ, 250V
0Ω
0.001 to 0.010
±10 digits
100kΩ
0.090 to 0.110
±10 digits
1MΩ
0.975 to 1.025
[±2.0% ±5 digits]
10MΩ
9.75 to 10.25
[±2.0% ±5 digits]
100MΩ
94.5 to 105.5
[±5.0% ±5 digits]
MΩ, 500V
100kΩ
0.085 to 0.115
±15 digits
1MΩ
0.975 to 1.025
[±2.0% ±5 digits]
10MΩ
9.75 to 10.25
[±2.0% ±5 digits]
100MΩ
97.5 to 102.5
[±2.0% ±5 digits]
1000MΩ
945 to 1055
[±5.0% ±5 digits]
MΩ, 1000V
100kΩ
0.085 to 0.015
±15 digits
1MΩ
0.975 to 1.025
[±2.0% ±5 digits]
10MΩ
9.75 to 10.25
[±2.0% ±5 digits]
100MΩ
97.5 to 102.5
[±2.0% ±5 digits]
1000MΩ
965 to 1035
[±3.0% ±5 digits]
MΩ, 500V
500KΩ
<500V
Source Check
Check on each
Voltage range
0MΩ
<3.0mA
Source Check

Form number TM61795 Rev 4 July 2011
Page 4
CALIBRATION
Calibration Preparation
Required Equipment
The class of calibrator or equipment should have an accuracy that exceeds, by an expectable ratio,
the
accuracy of the instrument under test.
Required fixed resistors: 0 , 5 , 19 , 190 , 0.0M , 1M , 10M , 100M , 1000M
Simulated Test leads. With a total resistance of < .1 ±10m or .05Ω per simulated lead.
Calibration Procedure
It is recommended that all IDEAL meters undergo the following calibration procedure
on an annual basis.
Calibration
1. Press the key to switch off the instrument.
2. Remove test leads from the input terminals.
3. Remove hood and battery compartment cover by using a screwdriver. (Refer to Figure 2)
4. Loosen the screws from the case bottom. Remove the case bottom.
5. Short JP1, then replace the case bottom and battery compartment cover. (Refer to Figure 1)
6. Press the key to turn on the instrument. The LCD displays the version of the software.
7. Push the “TEST” key to enter the calibration mode.
8. Press the key to select the range to calibrate.
9. Input the range standard value as listed in Table 2. Push the “TEST” key for more than 2 seconds.
The LCD will display the A/D reading value.
10. Push the “TEST” key to save the range. Calibration is complete for that range.
11. If you want to calibrate the other ranges, repeat steps 8 - 10.
12. When complete, exit the calibration mode. Press the key to switch off the instrument.
13. Remove the case bottom and remove the short on JP1. (Refer to Figure 1)
14. Replace the case bottom and battery compartment cover, pressing to close it, and secure with screw.
15. Install the hood.

Form number TM61795 Rev 4 July 2011
Page 5
Table 2 Calibration Range Inputs: Model 61-795
Range
Function
Input the calibrator standard value
1
DCV
DC600.0V
2
ACV
AC600.0V
3
190.0Ω
4
0.00Ω
5
LOΩ
19.00Ω
6
LOΩ
0.00Ω
7
LOΩ
5.00Ω
8
LOΩ
0.00Ω
9
250V/MΩ
1000MΩ
10
250V/MΩ
100.0MΩ
11
250V/MΩ
10.00MΩ
12
250V/MΩ
1.000MΩ
13
250V/MΩ
0.000MΩ
14
500V/MΩ
1000MΩ
15
500V/MΩ
100.0MΩ
16
500V/MΩ
10.00MΩ
16
500V/MΩ
1.000MΩ
18
500V/MΩ
0.000MΩ
19
1000V/MΩ
1000MΩ
20
1000V/MΩ
100.0MΩ
21
1000V/MΩ
10.00MΩ
22
1000V/MΩ
1.000MΩ
23
1000V/MΩ
0.000MΩ
Battery Replacement (Refer to Figure 2)
1. Disconnect the test leads from any circuit under test.
2. Press the key to switch off the instrument.
3. Remove the hood and battery compartment cover by using a screwdriver.
4. Remove the batteries replacing them with new ones all of the same type (1.5×6 NEDA 15F IEC R6 JIS
UM-3) (Alkaline batteries are recommended.) making sure of polarity while installing.
5. Install bottom case cover and secure with screws.
6. Install the hood.
Replacing Fuse (Refer to Figure 2)
1. Disconnect the test leads from any circuit under test.
2. Press the key to switch off the instrument.

Form number TM61795 Rev 4 July 2011
Page 6
3. Remove the hood and battery compartment cover by using a screwdriver.
4. Loosen the screws from the case bottom. Remove the case bottom.
5. Remove input cover using a screwdriver.
6. Check the fuse with a digital multimeter with a source current < 10mA in low resistance range.
(Replace fuse with a BBS 1A/600V, 10.3*38 (1.5x0.41 inch) UL/CSA, interrupting rating 10kA.)
7. Install input cover and secure with screw.
8. Replace the case bottom and secure with screw.
9. Replace the battery compartment cover, pressing to close it, and secure with screw.
10. Install the hood.

Form number TM61795 Rev 4 July 2011
Page 7
Figure 1

Form number TM61795 Rev 4 July 2011
Page 8
Figure 2