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Super megohm SM7110
Hioki Super megohm SM7110 User Manual
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SM71
10
SM7120
Instruction Manual
SUPER MEGOHM METER
EN
Nov
. 2018 Revised edition 3
SM71
10A961-03 18-1
1H
Be sure to read this manual before
using the instrument.
Safety information
Operating Precautions
p.6
p.9
When using the instrument
for the rst time
T
roubleshooting
Names and Functions of Parts
p.18
Maintenance and Service
p.157
Preparing for Measurement
p.29
Error display and solution
p.160
2
Table of Contents
Verifying Package Contents
8
Main Unit and Accessories
8
Measurement Procedure
11
Starting the Measurement
11
Safety Information
12
Symbols on the Instrument
13
Measurement Categories
14
Operating Precautions
15
Instrument Installation
15
Product Overview and Features
23
Names and Functions of Parts
24
Screen Configuration and Operation
29
Measurement Screens
29
Settings Screens
29
Measurement Conditions
31
Basic Key Operation
32
Displaying Measurement Screen
32
Displaying the Various Menu Settings Screens
32
Selecting Settings Items
33
Methods for Changing Numerical Values
34
Preparing for Measurement
35
Connecting Power Cord to Instrument
35
Connecting Measurement Leads to Instrument
36
Connecting Electrode
36
Connecting Humidity Sensor
37
Outputting Measurement Current Value Converted to Analog Signal
41
Turning On/Off Instrument
42
Inspection before Use
43
Basic Measurement
45
Setting Measured Value Display Mode
45
Changing Display Notation
46
Changing Displayed Digits
46
Setting Measurement Speed
49
Changing Current Range
50
Connecting Measurement Leads or Electrode to Object to be Measured
51
Starting/Stopping Measurement
52
Confirming Measurement Results
52
Basic Measurement Examples
53
Applied Measurement
55
Starting Measurement after Measured Value Becomes Stable (Delay Function)
55
Reducing Variation in Measured Values (Average Function)
56
Setting Voltage Value for Resistance Calculation
62
Changing Measurement Starting Conditions (Trigger Function)
64
Setting the Trigger Mode
64
Inputting an External Trigger
65
Maintaining Measurement Accuracy (Self-Calibration Function)
66
Contact Check (Executing Contact Check, Setting Reference Value)
77
Setting Resistivity Calculation (Resistivity Measurement Function)
79
Measurement Principle
83
Measurement with Use of a Measurement Fixture
84
Measurement Without Use of a Measurement Fixture
85
Impact of Temperature
85
Automatic Measurement
86
Measuring Flat Sample
88
Measurement Using Pin Type Terminals
88
Measurement Using an Electrode for Measuring Surface Resistance
88
Measurement Using an Electrode for a Flat Sample
89
Volume Resistance Measurement and Surface Resistivity Measurement (the Functional Role of the Guard Electrode)
89
Measuring a Liquid Sample
92
When Using an Electrode for Liquid Samples
92
Measurement with Use of Shielding Box
93
Measuring Current
94
Connection Method
94
Judging Measured Value (Comparator Function)
95
Setting Judgment Sound
97
Confirming Judgment Results
98
Saving and Loading Settings (Panel Saving and Loading)
99
Saving Settings (Panel Saving Function)
100
Loading Settings (Panel Loading Function)
101
Changing Panel Name
102
Deleting Panel Contents
103
System Setting
105
Setting Sound of Key Operation
105
Disabling Key Operation (Key Lock Function)
106
Browsing, Deleting, and Outputting Internal Memory Data
107
Browsing and Deleting Data
108
Adjusting Screen Contrast
110
Adjusting Backlight Brightness
111
Changing Power Frequency Setting (Power Frequency Setting Function)
111
Initializing Settings (Reset)
112
Default Setting List
113
Checking Instrument Information
114
External Control (EXT I/O)
115
Switching Current Sink (NPN) / Current Source (PNP)
116
External Input/Output Terminals and Signals
116
Instrument-Side Connector and Mating Connectors
116
Instrument-Side Connector Pin Assignment
117
Input Signal
118
Output Signal
119
Timing Chart
120
From When Measurement Starts to When Judgment Result Is Acquired
120
Output Signal Status on Start-Up
125
Flowchart for Acquiring a Judgment Result or a Measured Value with the External Trigger Setting
125
Internal Circuit Configuration
126
Electrical Specifications
127
Examples of Connection
128
Assembling Male Connector for EXT I/O (Accessory)
129
EXT I/O Terminal Input and Output Testing
130
Settings for External Input and Output
131
Trigger Logic
131
Trigger Filter
132
GO-Signal Outputting Logic Level
133
EOM Signal Output Mode
134
Summary and Features of Interface
135
Usb Interface
136
Setting the Instrument
137
Connecting the RS-232C Cable
138
Setting the Controller (Computer or PLC)
139
Gpib Interface
140
Connecting the GP-IB Cable
140
Settings Common to Interfaces
142
Outputting Measured Values (Data Output Function) (RS-232C and USB Only)
142
Displaying Communication Commands (Communication Monitor Function)
143
Control by Using Commands
144
Remote State
144
Local State
144
General Specifications
145
Input/Output/Measurement Specifications
146
Basic Specifications
146
Accuracy Specifications
147
Function Specifications
151
Interface Specifications
158
External I/O Specifications
160
Maintenance and Service
163
Troubleshooting
163
General Items
163
Measurement Items
164
Error Display and Solution
166
Function Errors
166
Measurement Errors
167
Other Errors
167
Inspection, Repair and Cleaning
168
Appx. 2 Changes in Current Running through Insulator
170
Effects of Conductive Noise
173
Connecting Objects to be Measured and the Switching Unit to the Instrument
177
Circuit Diagram of the Switching Unit
179
Including Current-Limiting Resistor (Protective Resistance) and Relay
179
Current-Limiting Resistor
180
Resistance Value
180
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Hioki Super megohm SM7110 Specifications
General
Brand
Hioki
Model
Super megohm SM7110
Category
Measuring Instruments
Language
English
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