Triplett DPR302 Manuale utente

User Manual

DPR302/DPR305

DPR302 - Differential Pressure Manometer (2PSI)

DPR305 - Differential Pressure Manometer (5PSI)

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Introduction

Thank you for selecting the Triplett DPR302 Differential Pressure

Manometer. This device measures gauge and differential pressure in

the range of ±2.000 psi. The DPR302 offers eleven (11) units of

measure (user selectable by front panel pushbutton) and has a

differential input that uses convenient quick‐disconnect fittings.

Advanced features include DATA HOLD, MIN‐MAX‐AVG RECORD

mode, ZERO/OFFSET, AUTO POWER OFF

Description

Buttons

The meter has six buttons.

1. BACKLIGHT

2. DIF

3. HOLD

4. ZERO

5. UNITS

6. REC

7. ON/OFF

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Display Description

1. Hold Function

2. Differential Mode

3. Primary Data screen

4. Auto Power Off

5. Record Mode

6. MAX/MIN/AVG

7. Low Battery indicator

8. Pressure Unit indicator

9. Relative Time Clock

Operation

Power

Press the ON/OFF button to turn power on or off. The meter will

perform a short self-test when turned on. The meter defaults to

the setting used during the last operation.

Zero Adjust and Offset

Before use and without fittings attached to the meter, press the

ZERO button for more than 2 seconds to zero the meter .The meter

will reset and display“oooo ”

from right to left. 0.000 will be display.

If it is desired to offset the meter and display, press the DIF

button while taking a measurement Subsequent reading will be

the difference between the current measurement and the

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measurement that was on the display when the DIF button was

pressed.

Data Hold

Press the HOLD button momentarily to freeze the displayed

reading. The ‘HOLD’icon will appear on the upper left-hand side

of the display. If the pressure value is over the range, error codes

will show on the screen.

Press the HOLD button again to return to normal operation.

Record

The MAX/MIN mode allows the user to view only the highest

(MAX) , lowest (MIN)or average (AVG) readings with relative time

stamp.

1. Press the REC button once and REC appears on the display (All

other functions are locked out except for Power & Backlight).

The relative time clock also appears in the secondary display

and starts counting.

2. Press the REC Button again and MAX appears on the display

.The display is now showing the maximum pressure and relative

time that it was recorded.

3. Press the REC button to display the minimum MIN reading

with the relative time.

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4. Press the REC button to display the average value AVG

reading with the relative time.

5. Press the REC button again to continue recording MAX/MIN

/AVG measurements.

6. To exit the MIN/MAX/AVG mode, press the REC button for

3 seconds to return to normal operation.

Backlight Display

Press the Backlight button to turn on the backlight.

It will remain on for 40 seconds.

Automatic Power Off (APO)

The meter will automatically shut off after 20 minutes to

conserve battery life. To disable Auto Power Off , hold down the

HOLD button and turn on the meter on , An “n”will appear in the

display indicating that Auto Power Off mode is disabled. The meter

will return to normal operation when it is turned off.

Units

Press the Unit button momentarily and the meter will cycle

through the 11 available units of measure as indicated by the

cursor on the bottom of the display.

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Error Codes

An error message will appear on the display if the meter fails an

internal diagnostic test. And it will freeze all the buttons.

Err.1: Pressure value is over the range.

Err.2: Pressure value is below the range.

Err.3: DIF function, the differential pressure value is over range.

Err4: DIF function, the differential pressure value is below

range.

BATTERY REPLACEMENT

When the battery is LOW, “BAT”will appear on the LCD. Replace

the battery.

Battery Safety Notes: Please dispose of batteries responsibly; never

dispose of batteries in a fire, batteries may explode or leak. If the meter

is not to be used for 60 days or more, remove the battery and store

separately.

Never dispose of used batteries or rechargeable batteries in

household waste.

As consumers, users are legally required to take used batteries

to appropriate collection sites, the retail store where the

batteries were purchased, or wherever batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user is

obligated to take end‐of‐ life devices to a designated collection point for

the disposal of electrical and electronic equipment.

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Specifications

Display Dual LCD

Accuracy ±0.3%FSO ( 77°F/25 °C )

Repeatability ±0.2% (Max.+/ -0.5% FSO)

Linearity/Hysteresis ±0.29% FSO

Pressure Range



2 psi (DPR302)



5 psi (DPR305)

Maximum Pressure 10psi(DP302)/20psi (DP305)

Response Time 0.5 Seconds typical

Low Battery Indicator Yes

Over range Indicator Err.1

Under range Indicator Err.2

Operating Conditions 32°F to 122°F ( 0 to 50°C)

Storage Conditions 14 to 140°F ( -10 to 60°C)

Power Supply (3)1.5V “AAA” batteries

DPR302

Function

Range

Resolution

Function

Range

Resolution

inH20

55.40

0.01

ozin

32.00

0.01

psi

2.000

0.001

ftH20

4.612

0.001

mbar

137.8

0.1

cmH20

140.6

0.1

kPa

13.79

0.01

kgcm

0.140

0.001

inHg

4.072

0.001

bar

0.137

0.001

mmHg

103.4

0.1

DPR305

Function

Range

Resolution

Function

Range

Resolution

inH20

138.4

0.1

ozin

80.00

0.01

psi

5.000

0.001

ftH20

11.53

0.01

mbar

344.7

0.1

cmH20

351.5

0.1

kPa

34.47

0.01

kgcm

0.352

0.001

inHg

10.18

0.01

bar

0.345

0.001

mmHg

258.6

0.1

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Warranty

Triplett / Jewell Instruments extends the following warranty to the original purchaser of

these goods for use. Triplett warrants to the original purchaser for use that the products

sold by it will be free from defects in workmanship and material for a period of (1) one

year from the date of purchase. This warranty does not apply to any of our products

which have been repaired or altered by unauthorized persons in any way or purchased

from unauthorized distributors so as, in our sole judgment, to injure their stability or

reliability, or which have been subject to misuse, abuse, misapplication, negligence,

accident or which have had the serial numbers altered, defaced, or removed.

Accessories, including batteries are not covered by this warranty

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