Digital DifferentialPressure Gauge

Switch

USER GUIDE

0.1 :

0.5BAR

Table of Contents

GETTING STARTEDDESCRIPTION

DisplayMechanicalElectricalMountingProgrammable SettingsDefault Factory Settings

PARTS IDENTIFICATIONDISPLAY

Low Power Display

GENERAL-USING THE ARROW BUTTONSFLOW CHART FOR SETTINGSMANUAL OPERATION

Manual Operation ON timeSELECTING UNITS OF MEASURETIME INTERVAL BETWEEN MEASUREMENTSCONTACT CLOSING TIME

Contact Closed Time=ATIME INTERVAL BETWEEN CONTACT CLOSUREZERO CALIBRATION SET

CONTACT AND SERVICE INFORMATION

GUARANTEECONTACT INFORMATION

PROGRAMMING

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Electrical

Digital Differential Pressure Gauge Switch

Power supply 9-24 VDC or 12-24 VACLow power indication: LO P on displayDry contact (N.O.) 0.5 A at 24 VACInternal memory retains settings when poweris not supplied.

2 ft / 60 cm. 4 wire cableRed (+) and Black (-) to power supplyGreen and White to N.O. contactsPressure ports 1/8” BSP / NPT male“H” pressure port marked on housing

Connect High pressure before Low pressureDisconnect Low pressure before High pressure.

Manual operationPSI or BAR displayTime interval between pressure measurementsContact closed timeTime interval between contact closureZero calibration

Mounting

Programmable Settings

Important:

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Digital Differential Pressure Gauge Switch

Parts Identification

Electric cable

Pipe FittingsMountingscrews

Cover

Display

Setting Buttons

Back view

Front view

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0.0 : 0.5

LO P

Display

Digital Differential Pressure Gauge Switch

DifferentialPressure

DisplaysPSI

Relay On

Left ButtonDecreases Values

Right ButtonIncreases Values

ManualOperation

DisplaysBAR

DifferentialPressure

Trigger setting

Low Power Display

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Digital Differential Pressure Gauge Switch

To enter settings press and hold both buttonssimultaneously.

Use the left button for decreasing settings,selecting BAR measurements, and for turning off thedevice in the Manual mode.

Use the right button for increasing settings,selecting PSI measurements, and for turning on thedevice in the Manual mode.

After making an adjustment, holding the twobuttons at the same time for 2 seconds, sets theadjustment and returns the display to the auto display.

If the buttons are not held down for the full 2 seconds,until the auto display appears, no changes are madeto the previous settings.

When making an adjustment, if the buttons are notpressed for 30 seconds, the auto display appears andno changes are made to the previous settings.

General - Using the Arrow Buttons

Programming

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Digital Differential Pressure Gauge Switch

Flow Chart for SettingsHold down

bothbuttons to

enter mode:Mode

2 Seconds

4 Seconds

6 Seconds

8 Seconds

10 Seconds

12 Seconds

Auto Display

ManualOperation

SelectingUnits

Time Intervalbetween

measurements

Contactclosed time

Time Intervalbetween

contact closure

Zerocalibration

2 Secs.

2 Secs.

2 Secs.

2 Secs.

2 Secs.

2 Secs.

Aftermaking anadjustmenthold downbothbuttonssimultan-eouslyfor twoseconds toset itand returnto theautodisplay.

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Digital Differential Pressure Gauge Switch

1. Press both buttons for 2 seconds until the letter Mflashes and the word “ON” appears.

2. Select ON or OFF. The left button selects OFF. The right button selects ON.

3. Hold the two buttons simultaneously for 2 secondsto set the selection. If you selected manual ON, Mand ON will appear on the display. If you selectedmanual OFF only the M appears in the bottom rowof the display.

If you selected A (t=A) as the contact closed timesetting, the contacts will close and remain closeduntil the third pressure differential pressuremeasurements takes place, then will open or closeaccording to the pressure differential.

Manual Operation

0.0 : 0.5 On

Manual OFF Manual ON

Manual Operation ON time

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0.0 : 7 0.0 : 0.5

Digital Differential Pressure Gauge Switch

If you selected contact closed time “t” as a specifictime in seconds, for example 10 seconds, then thecontacts will close for 10 seconds.

1. Press the two buttons simultaneously for 4 seconds until PSI or BAR flashes.

2. Press to switch from PSI to BAR.

3. Press to switch from BAR to PSI.

4. Set the selection by pressing on the two buttons simultaneously for 2 seconds.

Selecting Units of Measure

Setting readings in PSI Setting readings in BAR

FlashesFlashes

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5 : 1 0

Digital Differential Pressure Gauge Switch

Time Interval between MeasurementsThe device checks pressure differential every fewseconds. This interval may be set by the user. Thelonger the interval is between measurements, the lowerthe power consumption and the greater the battery life.The time interval may be set for any value from 0.5 to99 seconds (0.5 appears as A). Press the two buttonssimultaneously for 6 seconds, until the followingdisplay appears:

Flashes

1. Using the buttons, add or subtract time until youreach the desired time interval selection. In thisexample, 10 seconds has been selected.

2. Set by holding the two buttons downsimultaneously for 2 seconds, until thedispaly returns tothe basic screen.

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Digital Differential Pressure Gauge Switch

Time Interval between Contact Closure

In A In 3

Flashes Flashes

1. This section explains the possibility operating thecontact closure according to an internal timer; inaddition to being operated by pressure differential.If In=A this section is not active. If In value isbetween 1 - 24 hours the maximum time between twocycles will be the In value.Example: In=3 if the pressure differential will notcause contact closure, then the contact will be closingevery 3 hours for “t” time (page 10).

2. Press the two buttons simultaneously for 10 secondsuntil the following display appears:

3. Use the buttons to adjust the time or to select A.

4. Press the two buttons simultaneously for 2 secondsuntil the basic display appears, to set the selection.

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Digital Differential Pressure Gauge Switch

Zero Calibration Set

The pressure sensor should read zero when the pressuredifferential is zero. To check the calibration, remove thetwo pipe fittings from H and L. The pressure reading whenthe fittings are open to the atmosphere and there is nopressure differential between them should be “0”. If not,set the reading to “0” as follows:

1. Press the two buttons at the same time and hold for10 seconds until the following display appears:

The pressure differential reading (here 0.1 BAR) flashes.

2. Press the two buttons at the same time for 2 seconds until the auto display appears and will now show 0.0.

0.1 : 0.5BAR

Flashes

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Contact and ServiceInformation

Digital Differential Pressure Gauge Switch

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07/07BACCARA 42571501

Contact Information

FACTORY AND HEAD OFFICEBaccara Automation ControlKvutzat Geva 18915, Israel

Tel: 972 4 6535960Fax: 972 4 6531445E-mail: sales@baccara.co.ilWeb Site: www.baccara.co il

Digital Differential Pressure Gauge Switch

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