Extech Instruments PS101 Manual de usuario

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Differential Pressure Manometers

Model PS101, PS106, and PS115

2PS100 Series-EU-EN-v1.1 2/13

Introduction

Congratulations on your purchase of the Extech PS100 Series Differential Pressure Manometer.

These manometers measure gauge pressure (a measure of pressure with reference to ambient

pressure) and differential pressure (the difference between two pressure measurements). In

addition, the meter can display a value that represents the actual reading minus a stored reference

(DIF mode).

The PS101 (±1psi), PS106 (±6 psi), and the PS115 (±15 psi) models offer 11 units of measure, a 99

reading storage utility, MAX/MIN recording with Relative mode, Time Stamp, Data Hold, Auto Power

OFF, Zero function, PC interface, and large Backlit LCD. These devices are portable and battery

operated and perfect for HVAC technicians as well as those in the pneumatic and medical fields.

This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable

service. Please visit our website (www.extech.com) to check for the latest version of this User

Guide.

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the

manual for further information.

Description

Meter Description

1. Positive Pressure connector

2. Negative Pressure connector

3. RS-232 data to PC output jack

4. Measurement reading on LCD

5. Unit selector arrow

6. Unit of measure selections

7. UNIT of measure key

8. REC - MX/MN – Return key

9. LCD Backlight key

10. HOLD - up arrow ▲key

11. DIF - down arrow ▼key

12. MEMO - RECALL key

13. Power ON-OFF key

3PS100 Series-EU-EN-v1.1 2/13

Display Description

1. Primary Display Area

2. MAX-MIN mode active

3. Recording active

4. Data Hold active

5. Low battery voltage

6. Stored reading memory location

7. Single reading storage mode

8. Review stored data record

9. Elapsed timer

10. Unit of measure selector arrows

11. Difference mode (actual reading minus reference value)

12. Negative pressure connector

13. Positive pressure connector

14. Data to PC output jack

Keypad Description

Power ON/OFF

Press momentarily to store a reading. The MEMO icon and the storage location number

will appear on the display with a flashing reading. Press and hold for 3 seconds to access the

Recall mode (use up and down arrow keys to navigate stored readings). Momentarily press again

to exit recall mode. To delete all records, press and hold key for 3 seconds while in Recall mode.

Press momentarily to switch ON the display backlight for approximately 10 seconds

Unit of Measure selector key. Press momentarily to step through availble units.

Press momentarily to enter Record mode. REC icon apears and the elapsed timer starts.

Press to step through MAX and MIN readings. Other keys are locked in this mode except for the

backlight and the Power key. Press and hold for 3 seconds to exit the record mode and to return

to the normal mode of operation.

Press to freeze current reading. Press again to release.

Press momentarily to store the current reading as a reference (the DIF icon will switch

ON). Subsequent readings represent the current measurement minus the reference value. Note

that this display is NOT the differential pressure between the two pressure inputs.

4PS100 Series-EU-EN-v1.1 2/13

Getting Started

Power ON-OFF and the AUTO POWER OFF Feature

Power the meter by momentarily pressing the power key .

Press the power key again to switch the meter OFF.

The meter is powered by six (6) 1.5VDC ‘AA’ batteries. If the meter will not switch ON please

check that fresh batteries are installed in the rear battery compartment.

The meter is equipped with AUTO POWER OFF which switches the meter OFF after 20

minutes of inactivity. To disable this feature press and hold the Power and Hold keys

simultaneously while switching the meter ON. Release the Hold key when the ‘n’ icon appears

on the display. The Auto Power OFF feature is now disabled but will be re-enabled when the

meter’s power is cycled again.

ZERO Adjustment

To zero the display (with no pressure applied), press and hold the down arrow key▼for five (5)

seconds. The display will scroll 0.0.0.0 from right to left as it zeros the meter.

Display Backlight

To switch the display backlight ON, press the backlight key. The backlight will switch OFF

automatically after approximately 10 seconds to conserve battery energy.

Connections

Pressure hoses are connected to the meter via the connectors at the top of the meter. Note the

range for each meter model: PS101 (±1psi), PS106 (±6 psi), and the PS115 (±15 psi).

Units of Measure

The arrow on the bottom of the LCD points to the currently selected unit of measure. To change the

unit of measure, press the UNIT key until the arrow points to the desired unit of measure. Refer to

the table below for a brief description of the units

UNIT SYMBOL DESCRIPTION

in Hg inches of mercury

psi pounds per square inch

ft H2O feet of water

in H2O inches of water

oz in2ounces per square inch

bar atmospheric pressure

kPA kilo-pascals

mbar milli-bar (1000mbar = 1 bar)

kg cm2kilograms per square centimeter

mm H2O millimeters of water

mm Hg millimeters of mercury

5PS100 Series-EU-EN-v1.1 2/13

Difference (DIF) Display

The meter can display readings that represent the current measurement minus a stored reference

value. To store a reference value, press the DIF ▼key when the desired reference value is on the

display. The DIF icon will appear on the LCD indicating that the difference mode is active.

Subsequent readings will now represent the current measurement minus the stored reference.

This is NOT the normal differential pressure mode where the reading represents the difference

between the positive and negative pressure inputs (at the top of the meter) but rather a simple

difference between a stored value and the actual reading.

Press the DIF key again momentarily to exit this mode (the DIF display icon will switch OFF and the

meter will return to the normal operating mode).

Data Hold

To freeze a displayed reading on the LCD, momentarily press the HOLD key (the Hicon will appear

above the reading). To exit HOLD, press the HOLD key again (the Hicon will switch OFF).

MAX-MIN Recording with Elapsed Timer

For a given measurement session, the meter can record the highest (MAX) and the lowest (MIN)

readings.

1. Press the REC MX-MN key momentarily (the REC icon appears and the elapsed timer starts).

2. The meter is now recording the MAX and MIN readings.

3. Press the REC MX-MN key again to view the current MAX reading (MAX icon appears). The

reading on the display is now the highest reading encountered since the REC icon switched on

(when the REC MX-MN key was first pressed).

4. Press the REC MX-MN key again to view the current MIN reading (MIN icon appears). The

reading on the display now represents the lowest reading encountered since the REC icon

switched on (when the REC MX-MN key was first pressed).

5. To exit the MAX-MIN mode, press and hold the REC MX-MN key for at least 2 seconds. The

REC-MAX-MIN icons will switch off, the MAX-MIN memory will clear, and the meter will return

to the normal operating mode.

99-Reading Memory (MEM key)

1. To store a reading into the meter’s internal memory, press the MEM-RECALL key momentarily.

2. The next available memory location (00-99) will appear on the lower right corner of the LCD

and the current reading (flashing) will be stored into that memory location. The MEMO display

icon will switch ON to indicate Memory mode. The MEMO icon will switch OFF a few seconds

later and the meter will return to the normal operating mode.

3. To recall readings, press and hold the MEM-RECALL key until the MEMO display icon

appears. Now step through the available readings using the up and down arrow keys. The

memory location number is shown on the lower right and the reading associated with the

memory location will be shown on the primary LCD viewing area.

4. The display will flash the word FULL when the 99 reading memory has been filled.

5. To clear (delete) all readings press and hold the MEM key for 3 seconds while in the Recall

mode.

RS-232 PC Interface

The optional 407001A software kit (software and cable) allows streaming of data to a PC via

the RS232 Output jack located on the top of the meter. Instructions for its use are provided

with the software and cable kit. For more information contact the technical support center.

The basic protocol configuration is: Baud rate 2400 bits per second, 8 data bits, 1 stop bit,

and no parity.

6PS100 Series-EU-EN-v1.1 2/13

Battery Replacement and Disposal

When the low battery icon appears on the LCD, the batteries must be replaced. Several hours of

accurate readings are still possible in this condition; however batteries should be replaced as soon

as possible:

Remove the Phillips screws from the rear of the meter.

Open the battery compartment and replace the six (6) 1.5V ‘AA’ batteries observing polarity.

Replace the battery compartment cover with the Phillips screws.

EU users are legally bound by the battery ordinance to return used batteries to

community collection points or to wherever batteries / accumulators are sold. Disposal

as household waste is prohibited.

Specifications

General Specifications

Display Backlit multifunction LCD

Status indicators Multifunction display icons and low battery indicator

Ranges Model PS101: 1psi

Model PS106: 6psi

Model PS115: 15 psi

Measurement Units

bar, mbar, psi, Kg/cm2, mm Hg, inch Hg, meters of H2O, inches of

H2O, hPA, kPA, and ozin2.

Accuracy (Meter) ± (0.3% full scale) at ambient temperature 25°C (± 73°F)

Repeatability ± (0.2% to 0.5% full scale)

Linearity/Hysteresis ± (0.29% to 1.0% full scale)

Combined accuracy ± (1.0% full scale)

Data Hold Freezes the displayed reading

Max-Min Record/Recall Record and Recall the Maximum and Minimum readings

Internal reading memory 99-reading internal memory storage with instant recall

Display update rate 0.5 seconds (approx.)

Data Output RS-232 PC interface

Hose dimensions 4mm lug (orange hose 500mm length)

8mm lug (black hose 500mm length)

Operating Temperature 0 to 50

C (32 to 122

Operating/Storage Humidity 90% R.H. max.

Storage Temperature -20 to 50

C (-4 to 122

Auto Power OFF After 20 minutes of inactivity (can be disabled)

Power Supply Six (6) 1.5 VDC batteries

Weight 200g (7.0 oz.) with batteries

Dimensions 169 x 78.3 x 34.4mm (6.7 x 3.1 x 1.4”)

7PS100 Series-EU-EN-v1.1 2/13

Input Range and Resolution table

Model PS101 Model PS106 Model PS115

in Hg 2.036 12.216 30.540

psi 1.000 6.000 15.000

ft H2O 2.307 13.840 34.600

in H2O 27.68 166.08 415.20

oz in216.00 96.00 240.00

bar 0.069 0.414 1.034

kPA 6.89 41.36 103.42

mbar 68.9 413.7 1034.2

kg cm20.070 0.422 1.055

mm H2O 703 4218 10546

mm Hg 51.7 310.3 775.7

ISO-9001 Certified

www.extech.com

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