UNI-T UT712 Operating Manual

Table of Contents

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Title Page

Introduction
Safety Information
The Calibrator Structure
LCD Display
Turning the Calibrator On
Measuring DC Volts (V and COM jack)
Sourcing DC Volts (V and COM jack)
Measuring DC mA (mA and COM jack)
Measuring DC mA with Loop Power (LOOP and mA jack)
Using the Current Output Modes
Sourcing mA
Simulating a Transmitter
Maintenance
In Case of Difficulty
Cleaning
Calibration
Replacing the Fuses

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Title Page

Replacing the Battery
Specifications
DC Voltage and DC Current Input
DC Voltage and DC Current Output
General Specifications

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Introduction

The Uni-Trend UT712 Volt/mA Calibrator is a source and measurement tool for 0 to
20mA current loop testing and DC Voltage from 0 to 20V. The calibrator does not
source and measure simultaneously.

Your calibrator has a unique design and large LCD can read the data clearly.
Your calibrator is supplied with the following:

User Manual
Test Leads
Alligator Clip
Carrying Bag
9V alkaline battery (ANSI/NEDA 1604A or IEC 6LR61)

1 piece
1 set
1 set
1 piece
1 piece

If the calibrator is damaged or something is missing, contact the place of purchase
immediately.

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International Symbols

Symbol Meaning

Earth ground
Refer to this user manual for information about this feature.
Battery
Double insulated
Conforms to European Union directives.

Safety Information

Use the calibrator only as specified in this user manual, otherwise the protection
provided by the calibrator may be impaired.

A Warning identified conditions and actions that pose hazard(s) to her user.

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Warning

To avoid possible electric shock or personal injury:

Never apply more than 30V between any two jacks (terminals), or between
any jack and earth ground.
Make sure the battery door is closed before you operate the calibrator.
Remove test leads from the calibrator before you open the battery door.
Do not operate calibrator if it is damged.
Do not use or store the calibrator in an environment of high temperature,
humidity , explosive, inflammable and strong magnetic field. The performance
of the Meter may deteriorate after dampened.
When servicing the calibrator, use only specified replacement parts.
Use the proper jacks, function, and range for your measurementt or output
application.
To avoid false readings, which could lead to possible electric shock or
personal injury, replace the battery as soon as the battery indicator ( )
appears.
Turn the calibrator off when it is not in use and take out the battery when
not using for a long time.

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Constantly check the battery as it may leak when it has not been using for
some time, replace the battery as soon as leaking appears. A leaking
battery will damage the calibrator.
The internal circuit of the calibrator shall not be altered at will to avoid
damage of the calibrator and any acccident.
When the calibator is off, the jacks cannot connect to any loading or they
must not be short circuit between jacks.
When the calibrator is carrying out measurment, do not contact any bare
cable, connector, used jacks or the circuit under test.

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The Calibrator Structure

LCD Display

INPUT Button

Press and to change
the cursor location.
Press and to scroll
up/down. Hold down to
scroll faster.

Press to select mA
measurement

Press to select V
measurement

Press to select mV
measurement

Output/Input Jacks

Figure 1

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The calibrator is in output mode
The calibrator is in input mode
The measurement unit of the current reading
Battery is low. Replace the battery
The current cursor location

OUTPUT

INPUT

mV, V, mA

Figure 2

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