Dwyer Instruments 478A Series User manual

MANOMETER

MODEL

478A

ACCURACY

±1.5% FS

RUGGED

ALUMINUM

METAL

HOUSING

ONE-TOUCH™

CALIBRATION

TECHNOLOGY

MIN./MAX.

READING

RECALL

DIFFERENTIAL

PRESSURE MADE IN

THE U.S.A.

DWYER INSTRUMENTS, INC. • MICHIGAN CITY, IN 46360

email: [email protected] • http://www.dwyer-inst.com

443438-10 Rev. 4

Made in USA of U.S. & Imported Parts

TE-478A

Duracell®is a registered trademark of The Gillette company.

Eveready®is a registered trademark of Eveready Battery Company, Inc.

SPECIFICATIONS

Service: Air and compatible gases.

Wetted Materials: Consult factory.

Accuracy: ±1.5% full-scale* at 72°F (22.2°C). Includes linearity and repeatability.

Pressure Hysteresis: ±0.1% of FS.

Pressure Limits: 5 psig (.34 bar).

Temperature Limits: 0 to 140°F (-17.8 to 60°C).

Compensated Temperature Limits: 32 to 104°F (0 to 40°C).

Thermal Effect: 0.05% FS/°F.

Display: 4 digit LCD (.425˝H x .234˝W digits).

Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable.

Process Connections: Two barbed connections for use with 3/16˝ or 1/4˝ ID tubing.

Weight: 10.8 oz (306 g).

Agency Approvals: CE.

*When subjected to electromagnetic interference,

at 837 MHz (10 V/m) accuracy is 5.0% full scale.

OPERATING INSTRUCTIONS

ON/OFF:

Press ON/OFF to toggle on and off. Press and hold ON/OFF for about 2 seconds to turn it off. Device will automatically shut off

after 20 minutes if not used.

ZERO:

Vent both pressure ports to atmosphere. Press ZERO button until the LCD displays “---” then release it.

UNITS:

To change units, press both ON/OFF and ZERO buttons simultaneously.

HOLD READING:

Press HOLD to hold current reading. Press again to resume measurement.

MIN/MAX:

First button press displays MIN value. Second press displays MAX value. Third press returns to normal measurement. Reset MIN

and MAX by pressing ON/OFF button when MIN or MAX is displayed.

BATTERY:

Remove retaining screws on end cap at base of instrument to replace battery when LOW BAT is displayed. Use 9 V alkaline battery

Duracell®MN 1604, Eveready®522, or equivalent.

MODEL CHART

Model Range in w.c.

Available Pressure Units Resolution

in w.c.

Max.

Pressurebar psi in Hg kPa in w.c. mm Hg mbar mm w.c Pa

478A-0

478A-1

-4.00 to 4.00

-60.0 to 60.0 .1495

.1445

2.168

.294

4.41

0.996

14.95

4.00

60.0

7.47

112.1

9.96

149.5

101.6

1524

996 0.01

0.1

5 psig

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