Dwyer | Series 476A & 478A | Instruction manual | Dwyer Series 476A & 478A Instruction Manual

Dwyer Series 476A & 478A Instruction Manual
DIFFERENTIAL
PRESSURE
MADE IN
THE U.S.A.
ACCURACY
±1.5% FS
RUGGED
ALUMINUM
METAL
HOUSING
ONE-TOUCH™
CALIBRATION
TECHNOLOGY
MIN./MAX.
READING
RECALL
MANOMETER
®
MODEL
478A
TE-478A
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.
MODEL CHART
Available Pressure Units
Model Range in w.c. bar
psi
in Hg kPa in w.c. mm Hg mbar mm w.c Pa
478A-0 -4.00 to 4.00
.1445 .294
0.996 4.00
7.47
9.96 101.6
996
478A-1 -60.0 to 60.0 .1495 2.168 4.41
14.95 60.0
112.1
149.5 1524
Resolution
in w.c.
0.01
0.1
Max.
Pressure
5 psig
5 psig
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.
Duracell® is a registered trademark of The Gillette company.
Eveready® is a registered trademark of Eveready Battery Company, Inc.
DWYER INSTRUMENTS, INC. • MICHIGAN CITY, IN 46360
443438-10 Rev. 4
email: info@dwyermail.com • http://www.dwyer-inst.com
Made in USA of U.S. & Imported Parts
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