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UT804
UNI-T UT804 User Manual
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58
Model UT804:
OPERA
TING M
ANUAL
Detailed
Accuracy Specifications
Accuracy:
( [% of reading] + [number of least significant digits] ), guarantee for 1 year
.
Operating temperature: 18
o
C~28
o
C
Relative humidity:
75%RH
400mV
4V
40V
400V
1000V
0.01mV
0.0001V
0.001V
0.01V
0.1V
(0.025%+5) under
REL
mode
(0.05%+5)
(0.1%+8)
1000V
Around 2.5G
Ω
Around 10M
Ω
A. DC V
oltage
Range
Resolution
Accuracy
Overload Protection
Input Impedance
59
61
Table of Contents
Default Chapter
3
Table of Contents
3
1 Before You Start
8
Overview
8
Unpacking Inspection
9
Safety Information
10
Rules for Safe Operation
10
International Electrical Symbols
12
2 Getting Acquainted
13
Turning the Meter on
13
Battery Considerations
13
Automatic Power off
13
Automatic Backlight off
13
Low Battery Indication
14
The Meter Structure
14
Rotary Switch
15
DC Voltage Measurement
16
AC Voltage Measurement
16
DC Millivoltage Measurement
16
Resistance Measurement
16
Rotary Switch Selections
16
Functional Buttons
17
The Meter Functions Vs Displays
20
Selecting the Range
22
Understanding the Display
22
Display Features
22
Display Features
23
Continuity Test
25
Diode Test
25
Analogue Bar Graph
26
Using MAX MIN
26
3 Making Measurements
27
A.measuring DC Voltage
27
B.measuring AC Voltage
27
C.measuring DC Millivoltage
30
D.measuring Currents
31
E.measuring Resistance
37
F.testing for Continuity
39
G.testing Diodes
40
H.measuring Capacitance
42
Capacitance Measurement
42
Measuring Frequency / Duty Cycle
44
Frequency / Duty Cycle Measurement
44
J.measuring Temperature
45
Temperature Measurement
45
20Ma Loop Current as % Readout
46
4 Using Stores, Recall and Send Features
48
Introduction
48
Storing and Clearing Readings
48
Recalling Stored Readings
49
Using Send
49
5 Changing the Default Setting
50
Introduction
50
Selecting Setup Options
50
Setup Selections
51
Saving Setup Options
52
6 Maintenance
53
A.general Service
53
B.replacing the Fuses
53
Fuse Replacement
53
C.replacing the Battery
55
Battery Replacement
55
7 Specifications
56
Safety and Compliances
56
Physical Specifications
57
General Specifications
58
Feature Summary
58
Basic Specifications
59
Detailed Accuracy Specifications
60
DC Voltage
60
AC Voltage
61
DC Current
62
AC Current
63
Resistance
64
Continuity Test
64
Diode Test
65
Capacitance
65
Frequency
66
Duty Cycle
67
Temperature
67
Degrees Celsius
67
Fahrenheit
68
4~20Ma Loop Current
68
4
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UNI-T UT804 Specifications
General
Brand
UNI-T
Model
UT804
Category
Multimeter
Language
English
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