Fluke 718 30G Manuale utente

718 30G/100G

Pressure Calibrator

March 2000 Rev.2, 12/02

All product names are trademarks of their respective companies.

Product Overview

LIMITED WARRANTY & LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship

for three years (one year for pump assembly) from the date of purchase.

This warranty does not cover fuses, disposable batteries or damage from

accident, neglect, misuse or abnormal conditions of operation or handling.

Resellers are not authorized to extend any other warranty on Fluke’s

behalf. To obtain service during the warranty period, send your defective

Calibrator to the nearest Fluke Authorized Service Center with a descrip-

tion of the problem.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRAN-

TIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EX-

PRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL,

INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR

LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states

or countries do not allow the exclusion or limitation of an implied warranty

or of incidental or consequential damages, this limitation of liability may

not apply to you.

Accessing the Users Manual

The 718 Pressure Calibrator Users Manual is available

on the 718 CD included with your calibrator.

Contacting Fluke

To order accessories, receive operating assistance, or

get the location of the nearest Fluke distributor or Serv-

ice Center, call:

USA: 1-888-99-FLUKE (1-888-993-5853)

Canada: 1-800-363-5853

Europe: +31 402-678-200

Japan: +81-3-3434-0181

Singapore: +65-738-5655

Anywhere in the world: +1-425-446-5500

Or, visit Fluke’s Web site at www.fluke.com.

Pressure Calibrator

Introduction

The Fluke Model 718 30G and 718 100G Pressure

Calibrators (hereafter called “Calibrator”) can do the

following:

•Calibrate P/I (pressure to current) transmitters.

•Measure pressure via a 1/8-inch NPT pressure fitting

and an internal pressure sensor or via a Fluke 700

Series Pressure Module.

•Measure current up to 24 mA.

•Simultaneously display pressure and current

measurements.

•Supply loop voltage.

The Calibrator makes 5-digit pressure readings in the

following units: psi, inH2O at 4 °C, inH2O at 20 °C, kPa,

cmH2O at 4 °C, cmH2O at 20 °C, bar, mbar, kg/cm2, inHg,

and mmHg. Full scale pressure sensor input is as follows:

•Model 718 30G: 30 psi (206.85 kPa, 2.0685 bar). “OL”

appears at 33 psi.

•Model 718 100G: 100 psi (689.5 kPa, 6.895 bar). “OL”

appears at 120 psi.

The Calibrator measures pressure sensor inputs in the

units shown in Table 1.

For Pressure Modules, full scale readings for all pressure

ranges can be made in psi, kPa, and inHg units. To avoid

display overflow, full scale readings are limited to 1000 psi

in cmH2O, mbar, and mmHg units, and 3000 psi in inH2O

units. Pressures of at least 15 psi must be measured for

meaningful readings in bar and kg/cm2units.

718 30G/100G

Product Overview

Table 1. Pressure Sensor Range and Resolution

Displayed

Pressure

Units

Model 718 30G Range

and Resolution Model 718 100G

Range and

Resolution

psi -12.000 to 30.000 psi -12.00 to 100.00 psi

inH2O at

4°C-332.16 to 830.40

inH2O-332.2 to 2768.0

inH2O

inH2O at

20°C-332.75 to 831.87

inH2O-332.8 to 2772.9

inH2O

cmH2O at

4°C-843.6 to 2109.0

cmH2O-843.6 to 7030.0

cmH2O

cmH2O at

20°C-845.2 to 2113.0

cmH2O-845.2 to 7043.0

cmH2O

bar -0.8274 to 2.0685 bar -0.8274 to 6.8950 bar

mbar -827.4 to 2068.5 mbar -827.4 to 6895.0 mbar

kPa -82.74 to 206.85 kPa -82.74 to 689.50 kPa

inHg -24.432 to 61.080 inHg -24.43 to 203.60 inHg

mmHg -620.6 to 1551.4

mmHg -620.6 to 5171.5

mmHg

kg/cm2-0.8437 to 2.1090

kg/cm2-0.8437 to 7.0306

kg/cm2

Standard Equipment

The items listed below are included with your calibrator. If

the calibrator is damaged or something is missing, contact

the place of purchase immediately. To order replacement

parts or spares, see the user-replaceable parts list near

the end of this manual.

•TL75 test leads (one set)

•AC70A Alligator clips (one set)

•Holster

•718 Product Overview Manual

•718 CD-ROM (contains Users Manual)

•Fluke-700ILF In-Line Filter

Safety Information

Use the Calibrator only as specified in the Users Manual,

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.

Pressure Calibrator

Safety Information

WWarning

To avoid possible electric shock or personal injury:

•Never apply more than 30 V between the mA terminals, or between either of the mA terminals and earth

ground.

•Remove the test leads from the Calibrator before you open the battery door.

•Make sure the battery door is closed and latched before you operate the Calibrator.

•Do not operate the Calibrator if it is damaged.

•Do not operate the Calibrator around explosive gas, vapor, or dust.

•When using probes, keep fingers behind the finger guards on the probes.

•Use only two 9 V batteries, properly installed in the calibrator case, to power the calibrator.

•Follow all equipment safety procedures.

•Turn off circuit power before connecting the calibrator mA and COM terminals in the circuit. Place

calibrator in series with the circuit.

•When servicing the Calibrator, use only specified replacement parts.

•Do not allow water inside the case.

718 30G/100G

Product Overview

WWarning

To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery

as soon as the battery indicator Bappears.

To avoid a violent release of pressure in a pressurized system, shut off the valve and slowly bleed off the

pressure before you attach or detach the internal pressure sensor or Pressure Module fitting to the

pressure line.

To avoid overpressure damage, do not apply pressure to the internal pressure sensor input that exceeds

the following:

•Model 718 30G: 30.000 psi, 206.85 kPa, or 2.0685 bar. “OL” appears at 33 psi.

•Model 718 100G: 100.00 psi, 689.5 kPa, or 6.895 bar. “OL” appears at 120 psi.

To avoid mechanically damaging the Calibrator:

•Do not apply torque between the pressure fitting and the Calibrator case. See Figure 1 for the proper

use of tools.

To avoid misleading readings, disconnect the Pressure Module connector at the Calibrator.

To avoid damage to the Pressure Module, refer to the related Instruction Sheet.

To avoid damage to the pump, use with dry air and non-corrosive gases only. Use of the included Fluke

700-ILF In-Line Filter will help isolate the pump from contaminates. Failure to use the provided filter may

void the pump Warranty if contamination occurs.

Pressure Calibrator

Safety Information

Hold in

fixed

position

wh001f.eps

Figure 1. Connection Technique

Table 2. International Electrical Symbols

Symbol Meaning

JEarth ground

IFuse

MBattery

WRefer to the manual for information

about this feature.

TDouble insulated

Conforms to relevant Canadian

Standards Association directives.

PConforms to relevant European Union

directives

fPressure

718 30G/100G

Product Overview

Getting Aquainted with the Calibrator

Press Oto turn the Calibrator on and off. The Calibrator

displays pressure and current measurements

simultaneously. See Figure 2.

The upper part of the display shows the applied pressure

or vacuum. (Vacuum is shown as a negative value.) Press

Uto select a different unit. When you cycle the power

off and on, the Calibrator retains the unit you last used.

The lower part of the display shows the current (up to 24

mA) applied to the current (mA) inputs. The current inputs

are fused with a 0.125 A, 250 V fast fuse (Littelfusetype

2AG).

To source loop voltage, press Uwhile pressing Oon.

Current mA

measurement

Pressure

measurement

Pressure

module input

Pressure

sensor input

(Install filter here)

Current

input

On/Off Button

718

PRESSURE

CALIBRATOR

HOLD

COM

30V

MAX

0-30psi 0-206kPa

RANGE

90psi 620kPa

MAX

UNITS

ZERO

DAMP

MIN CLR

MAX HOLD

LOOP

POWER

BAROMETRIC ADJ.

wh005f.eps

Figure 2. Front Panel Features

Pressure Calibrator

Pushbuttons

Pushbutton operation is described in Table 3.

Table 3. Pushbutton Functions

Pushbutton Description

UPress to select a different pressure unit. All units are available when the pressure sensor input is used. For

higher pressure module inputs, inappropriate (out-of-range) units are not available. Press Oon while

pressing Uto source loop voltage.

DTurns pressure reading damping on and off. With damping on, the Calibrator averages several

measurements before displaying a reading.

ZPress to zero the pressure display. Vent pressure to atmosphere before you press this pushbutton. With an

Absolute Pressure Module, see special instructions below.

mPress and hold to read the minimum pressure and current readings since power was turned on or cwas

pressed.

cPress to clear the MIN and MAX memories.

MPress and hold to read the maximum pressure and current readings since power was turned on or c

was pressed.

hPress hto freeze the display. The gsymbol appears on the display. Press hagain to resume

normal operation.

718 30G/100G

Product Overview

Pump Features

Refer to Table 4 and Figure 3.

Table 4. Pump Features

Item Description

Pressure

Vacuum

Switch

Rotate forward (clockwise) for pressure,

backward (counter-clockwise) for

vacuum.

Pressure

Vacuum

Release

Valve

Rotate fully backward (counter-

clockwise) to release all pressure or

vacuum. (Rotate slightly for partial

release.) Rotate fully forward (clockwise)

to close valve.

Fine

Adjustment

Knob

Rotate either direction for precise

adjustment of applied pressure or

vacuum. Full rotation is about 30 turns.

Internal

Pump Increase pressure on the inward stroke.

In vacuum mode, decrease pressure on

the outward stroke.

Pressure/

Vacuum

Switch

Fine

Adjustment

Knob Internal Pump

Pressure/Vacuum

Release

Control

COM

30V

MAX

0-30psi 0-206kPa

RANGE

90psi 620kPa

MAX

ZERO

MIN CLR

MAX HOLD

BAROMETRIC ADJ.

wh009f.eps

Figure 3. Pump Features

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