User`s Manual Heavy Duty Pressure Meter Model 407495

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User`s Manual Heavy Duty Pressure Meter Model 407495 | Manualzz

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech 407495 Product Page

User's Manual

Heavy Duty Pressure Meter

Model 407495

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at

(781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is returned to Extech. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or consequential damages.

Extech's total liability is limited to repair or replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.

Introduction

Congratulations on the purchase of the Extech Heavy Duty Pressure Meter, Model

407495. This meter measures and displays pressure in eight (8) measurement units. Up to six (6) interchangeable transducers (sold separately) in varying ranges can be used with this meter. Special features include RS-232 PC Interface, Min/Max Memory, push-button

Zero, Data Hold, and Auto Power-Off. Careful use of this meter will provide years of reliable service.

Specifications

General Specifications

Transducers

Zero adjust

Data Hold

Min/Max Memory

PC Interface kit

Transducer signal

Display units

Auto Power-Off

Sampling time

Power supply

Low battery indication

Power consumption

Operating Temperature

Operating Humidity

Dimensions

Weight

Accessories

30, 75, 150, 300, 700, and 1500 max. psi (sold separately)

Full scale: 100mVDC

Bar, psi, Kg/cm

2

, mm/Hg, inches/Hg, meters/H

2

O, inches/H

2

O,

Atmosphere

Front panel push-button

Displayed reading can be held by front panel push-button

Lowest/Highest readings can be stored for later recall

Built-in RS-232 port for use with optional Windows

TM

data acquisition software

To conserve battery life, the meter turns OFF automatically after approx. 10 minutes (programmable over-ride).

0.8 seconds approx.

9V Battery

Rectangular battery-life box appears on the left side of LCD.

Approx. 7mA

32 to 122 o

F (0 to 50 o

C)

Less than 80% RH

7.1 x 2.8 x 1.3" (180 x 72 x 32mm)

Approx. 0.76 lbs. (345g)

Protective rubber holster and 9V battery

2

Model 407495 Version 1.4 6/2004

Transducer Range, Resolution, and Accuracy Specifications psi bar Kg/cm2 mm Hg in Hg m H

2

O in O atm

Range

Resolution 0.02 0.002 0.002 2 0.05 0.02 1 0.002

Range

Resolution 0.1 0.005 0.1 0.05 2 0.005

Range

Resolution 0.2 0.01 0.01 10 0.2 0.1 5 0.01

Range

Resolution 0.2 0.02 0.02 20 0.5 0.2 10 0.02

Range 700 50 50.95 37500 1476 509.5 20050 49.35

Resolution 1 0.05

Range 1500 100 101.9 75000 2952 1019 40100 98.7

Resolution 2 0.1

Accuracy: Meter only: ± (0.5% reading + 1 digit)

Transducer only: ± 2% full scale

Combined: ± (2.5% full scale + 1 digit)

Accuracy note: Specified accuracy applies to meter at 23 o

C (±5 o

C)

Calibration note: Re-calibration is not required each time a new transducer is attached.

Transducer Specifications

PT30

PT75

30psi (2 BAR)

75psi (5 BAR)

PT300

PT700

PT1500

300psi (20 BAR)

700psi (50 BAR)

1500psi (100 BAR)

Overload protection 150% of max capacity

Diaphragm Ceramic

Supply voltage

Thread

5V

¼” PS, 19 teeth per inch

Span (full scale)

Zero

± 1% (10 to 40ºC) includes linearity, hysteresis & repeatability

+/- 2% Full Scale (10ºC to 40ºC)

Operating Temperature 32ºF to 140ºF (0ºC to 40ºC)

Operating Humidity

Output

Size

Max 80% RH

Full capacity output = 100 mV DC

30 mm diameter x 85mm

Cable length 39” (1m)

3

Model 407495 Version 1.4 6/2004

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

Meter Description

1. Transducer cable shown plugged into meter input jack

4. Protective rubber holster

5. Keypad

6. Battery compartment on rear of meter

7. Transducer shown attached to meter cable

3

4

1

2

5

6

7

4

Model 407495 Version 1.4 6/2004

Preparation for Use

Measurement Procedure Overview

The following list provides an overview of pressure measurement steps. Each step is discussed in subsequent paragraphs. Note that the first 4 steps should only be performed the first time the meter is used and each time the transducer is changed.

1. Select a Transducer model that covers the desired range

2. Plug the Transducer into the meter's input jack

3. Program the Transducer range

4. Select the measurement units

5. Zero the meter

6. Connect the Transducer to the process under test

7. Apply pressure to the process under test

8. Read pressure reading on the meter's LCD

Selecting Transducer Range

1. With the meter turned OFF, simultaneously press and hold the HOLD, SENSOR, &

RECORD buttons down.

2. While holding the three buttons down, press the POWER key momentarily. Release the 3 buttons when the LCD display switches on.

3. A number will appear on the LCD that represents the Transducer type. Select the

Transducer type by pressing the SENSOR TYPE key until the desired transducer number appears. Select the transducer from the list below in step 5.

4. Press the ZERO button to store the new transducer type. The meter will memorize the new type even when the meter is turned OFF.

5. Select the transducer from the following list:

Select 2 for the 30 psi (2 bars) transducer

Select 5 for the 75 psi (5 bars) transducer

Select 10 for the 150 psi (10 bars) transducer

Select 20 for the 300 psi (20 bars) transducer

Select 50 for the 700 psi (50 bars) transducer

Select 100 for the 1500 psi (100 bars) transducer

NOTE: The meter does not need to be recalibrated each time the transducer is changed.

Connecting the Transducer to the Meter

1. Press the POWER button to turn the meter OFF.

2. Remove the existing transducer, if necessary, by unplugging it from the meter’s input jack (top of meter).

3. Plug the new transducer into the meter’s input jack.

Selecting the Unit of Measure

Press the UNIT key to select the desired unit of measure: Bar, psi, Kg/cm

2 m/H

2

O, inch/H

2

O, or Atmospheres (ATP).

, mm/Hg, in/Hg,

5

Model 407495 Version 1.4 6/2004

Operation

Push-button Zero

1. Attach a transducer to the meter, turn the meter ON, and select the range that matches the attached transducer as described in the 'Preparation for Use' section.

2. With the transducer attached to the meter (but not attached to the process) press the

ZERO button. Note that the ZERO button should always be pressed after swapping transducers.

3. If the display reads zero after pressing the ZERO button proceed to the next section. If the display does not zero, the transducer may be defective.

Connect Transducer Port to Process

1. Ensure that the process under test is not pressurized

2. Connect the Transducer's ¼” PS, 19 teeth per inch threaded port to the process under test.

3. Apply pressure to the process.

4. Read the pressure on the meter's LCD.

Data Hold

1. When a reading is on the display that you wish to hold, press the Data Hold button.

2. The reading will freeze and the HOLD icon will appear on the display.

3. Press the Data Hold button again to release the reading and return the meter to normal operation.

Minimum/Maximum Reading Memory

1. Press the RECORD/RECALL button to start tracking the highest (MAX) and lowest

(MIN) readings. The REC indicator will appear on the LCD.

2. Take pressure measurements.

3. When pressure measurements are complete, press the RECORD/RECALL button to recall the Maximum reading recorded (the MAX indicator will appear on the LCD).

4. Press the RECORD/RECALL button again to recall the Minimum reading recorded (the

MIN indicator will appear on the LCD).

5. To exit this mode and return the meter to normal operation, press and hold the

RECORD/RECALL button until the REC indicator goes out.

Auto Power-Off

In order to conserve battery life, the meter automatically shuts off after 10 minutes. To defeat this feature put the meter in the Record mode by pressing the RECORD/RECALL button; the REC indicator will appear. As long as the REC icon is displayed, the meter will stay on indefinitely.

6

Model 407495 Version 1.4 6/2004

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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