Fluke 717 1G Manuale utente

English

717 Series

Pressure Calibrators

Instruction Sheet

Introduction

The Fluke 717 Series Pressure Calibrators are compact, battery-powered, 5-digit

instruments that perform the following calibration and measurement functions:

•Calibrates P/I (pressure to current) transmitters

•Measures pressure using a 1/8-inch NPT pressure fitting and an internal

pressure sensor

•Measures pressure via a Fluke 700 Series Pressure Module

•Measures current up to 24 mA

•Sources loop voltage (to 24 V dc)

•Displays simultaneously pressure and current measurements

•Calculates mA percentage in Percent Mode

•Calculates mA error in Percent Error Mode

The 717 Pressure Calibrators (hereafter, “the Calibrator”) include:

•717 1G

•717 30G

•717 100G

•717 300G

•717 500G

•717 1000G

•717 1500G

•717 3000G

•717 5000G

Full Scale Pressure sensor is as listed in the “Specifications” section under

“Pressure Specifications”. The Calibrator is an IEC 61010, CAT I 30 V, Pollution

Degree 2 instrument. A CAT I instrument is designed to protect against transients

from low-energy sources like, for example, electronic circuits or a copy machine.

The Calibrator comes with a holster, an installed 9 V battery, a set of test leads and

alligator clips, and a 14-language instruction sheet pack. If the Calibrator is

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

PN 690013 March 1998, Rev. 2, 3/06 (English)

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Input Units

The Calibrator measures and displays pressure sensor inputs in the units listed

below:

•Psi

•inH2O@4°C

•inH2O@20°C

•cmH2O@4°C

•cmH2O@20°C

•bar

•mbar

•kPa

•inHg@0°C

•mmHg

•kg/cm2

If inappropriate units are selected, the output of Fluke 700P pressure modules can

be too low to be displayed or can cause the Calibrator to display OL (overload).

Refer to Table 1 for pressure unit and range compatibility.

Table 1. Pressure Unit and Range Compatibility

Units Range Units Range

psi All kPa All

inH2O Through 3000 psi inHg All

cmH2O Through 1000 psi mmHg Through 3000 psi

bar 15 psi and above kg/cm215 psi and above

mbar Through 1000 psi

Symbols

Symbol Meaning

+ ON / OFF button

J Earth ground

W Caution: Important information. See instruction sheet

X Hazardous voltage, risk of electric shock

f Pressure

T Double insulated

M Battery

$ Canadian Standards Association

P Conforms to European Union requirements

F Direct current

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Safety

A "XW Warning" identifies conditions or actions that pose hazards to the user.

A "WCaution" identifies conditions and hazards that may damage the Calibrator

or equipment under test.

XW Warnings

To avoid electric shock, injury, or damage to the Calibrator:

•Use the Calibrator only as described in this Instruction Sheet.

•Using the Calibrator in a manner not specified by the manufacturer might

impair the protection provided by the Calibrator.

•Do not use the Calibrator to make measurements in a CAT II, CAT III, or

CAT IV environment.

CAT I equipment is designed to protect against transient from high-

voltage, low-energy sources, such as electronic circuits or a copy

machine.

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

•Inspect the Calibrator before use. Do not use it if appears damaged.

•Check the test leads for continuity, damaged insulation, or exposed metal.

Replace damaged test leads.

•Never apply more than 30 V between any two terminals, or between any

terminal and earth ground.

•Use the proper terminals, mode, and range for your measuring or sourcing

application.

•To prevent damage to the unit under test, put the Calibrator in the correct

mode before connecting the test leads.

•When making connections, connect the COM test lead before the live lead;

when disconnecting, disconnect the live lead before the COM lead.

•Never use the Calibrator with the case open.

•Make sure the battery door is closed before you use the Calibrator.

•Replace the battery as soon as the M(low battery) symbol appears to

avoid false readings that can lead to electric shock.

•Remove test leads from the Calibrator before opening the case or battery

door.

•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

pressure sensor or Pressure Module fitting to the pressure line.

When servicing the Calibrator, use only specified replacement parts.

WCaution

When using pressure pressure modules, to avoid damage to the

Calibrator module connections, follow all procedures in the pressure

module instruction sheet.

WCaution

When using pressure sensor connections, to avoid damage to the

Calibrator or equipment to which it is attached:

•To avoid overpressure damage, do not apply pressures that exceed

ranges listed under “Pressure Specifications”.

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•To avoid corrosion in the pressure sensor, use the Calibrator only

with media compatible with glass, ceramic, silicon, RTV, nitrile

(Buna -N) type 303 stainless steel, and nickel.

•To avoid damaging the Calibrator, do not apply torque between the

pressure fitting and the Calibrator case. See Figure 1 for the proper

technique.

Hold in

fixed

position

qo001f.eps

Figure 1. Proper Tightening Method

Getting Acquainted

Press Oto turn the Calibrator ON and OFF. The Calibrator displays pressure and

current measurements simultaneously.

The upper part of the display shows the applied pressure.

Press Uto select a different unit. When you turn the Calibrator OFF, the next

time you turn the Calibrator back ON it returns to the pressure unit you last used.

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

current (mA) inputs. See Figure 2.

Power Saver

The Calibrator automatically turns off after 30 minutes of inactivity. To reduce this

time or disable this feature:

1. With the Calibrator OFF, press O.

2. P.S. xx is displayed, where xx is the turn-off time in minutes. OFF means the

power saver is disabled.

3. Press h(W) to decrease or a(Z) to increase the turn-off time.

4. To disable, press huntil the display shows OFF.

The Calibrator resumes normal operation after 2 seconds.

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HOLD

UNITS

ZERO

DAMP

MIN

MAX

MODE

SWITCH

TEST HOLD

COM

30V

MAX

RANGE

LOOP

POWER

BAROMETRIC ADJ.

717 100G

PRESSURE

CALIBRATOR

Current mA

measurement

Pressure

measurement

Pressure

module input

Pressure

sensor input

Current input

On/Off Button

I 69 mPa

RANGE -83 TO 690 kPa

-12 TO 100 PSI

MAX 200 PSI 1.4 mP

qo005f.eps

Figure 2. The Pressure Calibrator (717 100G is Shown)

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Pushbutton Functions

Button Function

Press to select a pressure unit. All units are available when the

pressure sensor input is used. For higher pressure module inputs,

inappropriate units are not available.

Press Oon while pressing Uto source loop voltage.

ENTER Press to toggle pressure reading damping on and off. With

damping on, the display does not update as quickly.

Press to confirm selection of 0% and 100% output parameters.

ZPress to zero the pressure display. (Vent pressure to atmosphere

before pressing.)

With an absolute pressure module, see instructions below.

Press to read the minimum pressure and current readings since

power was turned on or the registers were cleared. Press again to

read the maximum pressure and current readings since power was

turned on. Press and hold to clear the MIN/MAX registers.

SPress to perform switch test.

aPress to toggle the mA display mode between mA, mA

Percent, and mA Percent Error.

Press hto freeze the display.

The gsymbol appears on the display. Press h

again to resume normal operation.

In ZERO mode, press to decrease barometric pressure.

Switch Test

To perform a switch test, do the following:

Note

This example uses a normally closed switch. The procedure is the same for

an open switch but the display reads OPEN instead of CLOSE.

1. Connect the Calibrator mA and COM terminals to the switch using the

pressure switch terminals and connect an external pump between the

Calibrator and the pressure switch using a tee fitting. The polarity of the

terminals does not matter.

2. Make sure the vent on the pump is open and zero the Calibrator if necessary.

Close the vent after zeroing the Calibrator.

3. Press Sto enter pressure switch test mode. The Calibrator will display

CLOSE instead of a mA measurement.

4. Apply pressure with the pump slowly until the switch opens.

Note

In the switch test mode, the display update rate is increased to help capture

changing pressure inputs. Even with the enhanced sample rate, pressuring

the device under test should be done slowly to ensure accurate readings.

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5. OPEN is displayed once the switch is open. Bleed the pump slowly until the

pressure switch closes. The recall icon appears on the display.

6. Press Sto read the pressure values for when the switch opened, for when

it closed, and for the deadband

7. Hold Sfor 3 seconds to reset Switch Test mode; hold any other key for 3

seconds to exit.

Zeroing with Absolute Pressure Modules

To zero, adjust the Calibrator to read a known pressure as follows:

1. Press and hold Z.

2. Press Z(a) to increase or Y( h)to decrease the Calibrator reading

to equal the applied pressure.

3. Release Zto exit the zeroing procedure.

For all but the 700PA3 module, the known pressure can be barometric, if it is

accurately known. An accurate pressure standard can also apply a pressure within

range for any absolute pressure module. To convert measurement units:

•1 bar = 750 mmHg (1 mmHg = 0.0013332 bar)

•1 psi = 2.036 inHg (1 inHg = 0.49115 psi).

Sourcing Loop Voltage

To use the Calibrator to supply loop power (24 V dc) to a current transmitter that

is disconnected from the system:

1. With power off, hold down Uwhile pressing OON.

The LOOP POWER icon appears on the display.

2. With the transmitter disconnected from normal loop power, connect the

Calibrator in series with the instrument current loop as shown in Figure 3.

In addition to mA, the current can be displayed in two alternative modes:

•Percent Mode- The current is displayed as a percentage based on a 4-20 mA

scale.

•Percent Error Mode- Transmitter current output error is displayed. Error is

calculated based on a configurable zero and span pressure and a 4-20 mA

scale.

3. Measure loop current in the mA measurement display.

4. Press OOFF to deactivate the 24 V dc supply when you are done sourcing

loop voltage.

SIGNAL

TEST

+–

qo007f.eps

Figure 3. Sourcing Connections

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Percent Error Setup

Press and hold a. After 3 seconds the set icon and 0% appears on the lower

display. Use WandXto adjust the 0% point for the Percent Error calculation,

then press D(ENTER) key to confirm selection. Press a. 100% is displayed

on the lower display. Use WandXto adjust the 100% point for the Percent Error

calculation. Press D(ENTER) to confirm the selection and exit.

Calibrating a P/I Transmitter

To calibrate a P/I (pressure to current) transmitter:

1. Open the pump vent and zero the Calibrator before applying pressure.

Repeat frequently to ensure accuracy.

2. Apply a pressure to the transmitter and measure the transmitter’s current

loop output. OL (overload) is displayed at full scale.

3. Connect the Calibrator to the transmitter as shown in Figure 4 or Figure 5.

The Calibrator recognizes only the pressure module if both types of

connection are in place.

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mPa

RANGE -83 O 690 kPa

-12 O 100 PSI

MAX 200 PSI 1.4 mP

MAX

COM

HOLD

UNITS

ZERO

DAMP

HOLD

COM

30V

MAX

100psi 689kPa

RANGE

MAX

LOOP

POWER

BAROMETRIC ADJ.

717 100G

PRESSURE

CALIBRATOR

SIGNAL

TEST

+–

Red

Black

I 69

SWITCH

TEST

MODE

MIN

MAX

ENTER

qo002f.eps

Figure 4. Connecting to an Internal Pressure Sensor

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Calibrating a P/I Transmitter (Cont.)

SIGNAL

TEST

+–

Pressure

Module

Red

Black

HOLD

UNITS

ZERO

DAMP

HOLD

COM

30V

MAX

100psi 689kPa

RANGE

LOOP

POWER

BAROMETRIC ADJ.

717 100G

PRESSURE

CALIBRATOR

MIN

MAX

MODE

SWITCH

TEST

I 69 mPa

RANGE -83 TO 690 kPa

-12 TO 100 PSI

MAX 200 PSI 1.4 mP

ENTER

qo006f.eps

Figure 5. Connecting to a Pressure Module

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