Fluke 715 Manuale utente

715 English Instruction Sheet

Page 1

715

Volt/mA Calibrator

Instruction Sheet

Introduction

The Fluke 715 Volt/mA Calibrator is a source and measurement

tool for 0 to 24 mA current loop testing and dc voltage from 0 to

20/25 V. The calibrator does not source and measure

simultaneously.

Your calibrator is supplied with a holster, a set of test leads, an

installed 9 V alkaline battery, and this instruction sheet.

Summary of Calibrator Capabilities

Function Range Resolution

dc mV input

dc mV output 0 to 200 mV 0.01 mV

dc V input 0 to 25 V

dc V output 0 to 20 V 0.001 V

dc mA input

dc mA output 0 to 24 mA 0.001 mA

Loop power

output 24 V dc output N/A

PN 650314 July 1997 Rev. 3, 8/05

All product names are trademarks of their respective companies.

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715 English Instruction Sheet

Page 2

International Symbols

Symbol Meaning

J Earth ground

I Fuse

M Battery

W Refer to this instruction sheet for information about

this feature.

T Double insulated

$ Conforms to relevant Canadian Standards

Association directives.

P Conforms to European Union directives

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715 English Instruction Sheet

Page 3

Safety Information

Use the calibrator only as specified in this sheet, otherwise the

protection provided by the calibrator may be impaired.

A Warning identifies conditions and actions that pose hazard(s)

to the user; a Caution identifies conditions and actions that may

damage the calibrator or the equipment under test.

WWarning

To avoid possible electric shock or personal injury:

•Never apply more than 30 V between any two

jacks (terminals), or between any jack and earth

ground.

•Make sure the battery door is closed and

latched before you operate the calibrator.

•Remove test leads from the calibrator before

you open the battery door.

•Do not operate calibrator if it is damaged.

•Do not operate the calibrator around explosive

gas, vapor, or dust.

•When servicing the calibrator, use only

specified replacement parts.

Caution

Use the proper jacks, function, and range for your

measurement or output application.

Turning the Calibrator On

Press the green Opushbutton to turn the calibrator on and off.

For longest battery life:

•For mA output, use current simulate mode instead of source

mode when an external 24 to 30 V loop power supply is

available. (See Simulating a Transmitter.)

•Turn off the calibrator when not in use.

Auto Shut-Off (Power Saver) Feature

The Calibrator automatically turns off after 30 minutes of

inactivity. To reduce this time or disable this feature:

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715 English Instruction Sheet

Page 4

1. With the Calibrator OFF, press the Okey. P.S.xx is

displayed, where xx is the turn-off time in minutes. OFF

means the power saver is disabled.

2. Press ]and/or }to increase or decrease the turn-

off time in minutes.

3. To disable, press }until the display shows OFF.

HART TM Resistor Mode

The calibrator has a user selectable 250 ohm HARTTM resistor to

facilitate use with HARTTM communication devices. The resistor

can be switched in/out at any time by simultaneously pressing

the Vand Akeys. Use a HARTTM communicator when

measuring dc mA with loop power or sourcing mA.

Span Check Feature

The calibrator allows the users to store 0% and 100% setpoints

for each output function. Once setpoints are stored, the span

check feature allows the user to quickly toggle back and forth

from 0% to 100% or to step in 25% increments.

Automatic step and ramp modes can be enabled while in the

span check mode by simultaneously pressing the ]}keys.

First select the desired output mode (V,mV or mA) then preceed

to store the setpoints:

1. Storing 0% and 100% Setpoints

2. Using the ]}controls set the output to the desired

output value for 0%.

3. Press the ]}scroll keys simultaneously to store

the 0% value.

4. Now using the ]}controls set the output to the

desired output value for 100%

5. Again, press the ]}scroll keys simultaneously to

store the 100% value.

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715 English Instruction Sheet

Page 5

Measuring dc Volts

mV mA

mV or V depending

on range

Press so that

INPUT is on

the display

INPUT

Press to toggle

mV and

V ranges

it01i.eps

Sourcing dc Volts

mV mA

mV or V depending

on range

Press so that

OUTPUT is on

the display

OUTPUT

Press to toggle

mV and V ranges

it02i.eps

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715 English Instruction Sheet

Page 6

Measuring dc mA

mV mA

Press to toggle

mA and % of

4-20 mA scale

Press so that

INPUT is on

the display

INPUT

it03i.eps

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715 English Instruction Sheet

Page 7

Measuring dc mA with Loop Power

mV mA

Press so that

INPUT is on

the display

INPUT

Two-wire

transmitter

HART

Communicator

+24V output

Press to toggle

mA and % of

4-20 mA scale

it06i.eps

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715 English Instruction Sheet

Page 8

Using the Current Output Modes

The calibrator provides current output in mA or percent display.

Percent is -25.00 to 125.00%, where 0% is 4 mA, and 100% is 20

mA.

In source mode, the calibrator supplies the current. In simulate

mode, the calibrator simulates a two-wire transmitter in an

externally-powered current loop.

Sourcing mA

Use source mode whenever you need to supply current into a

passive circuit such as a current loop with no loop supply. Insert

the test leads into the OUTPUT +and −mA jacks as shown

below.

Note

A path must exist for current to flow between the

OUTPUT +and −mA jacks, otherwise the display will

indicate an overload (OL) when you set an output value.

715

VOLT/mA CALIBRATOR

LOOP

+mA

- mA +

- mA SIMULATE, +

VOLTS

COM

INPUT

OUTPUT (30V MAX)

30V

MAX 30V

MAX

mV mA

Press to scroll

up/down 0.001 mA.

Hold down to scroll

faster.

Press to step up/down

4 mA (25%)

Press so that

OUTPUT is on

the display.

OUTPUT

Press to toggle

mA and % of

4-20 mA scale

HART

Communicator

it04i.eps

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715 English Instruction Sheet

Page 9

Simulating a Transmitter

Use simulate mode when an external 24 to 30 V loop power

supply is available.

Insert the test leads into the mA SIMULATE −and +jacks as

shown below.

COM

mV mA

Power

supply

30V dc

max.

Press to scroll

up/down 0.001 mA.

Hold down to scroll

faster.

Press to step

up/down 4 mA (25%)

Press so that

OUTPUT is on

the display

OUTPUT Press to toggle

mA and % of

4-20 mA scale

it05i.eps

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715 English Instruction Sheet

Page 10

Maintenance

For maintenance procedures not described in this sheet, contact

a Fluke Service Center.

In Case of Difficulty

•Check the battery and test leads. Replace as necessary.

•Review this sheet to make sure you are using the correct

jacks and pushbuttons.

If the calibrator needs repair, contact a Fluke Service Center. If

the calibrator is under warranty, see the warranty statement

below for terms. If the warranty has lapsed, the calibrator will be

repaired and returned for a fixed fee. Contact a Fluke Service

Center for information and price.

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