Dwyer Instruments - Series 478: 478A-0 Digital Differential
Manometer
Case Sold Separately
• Measure Positive and Negative Pressures
• One-Button Auto-Zero Function
• Auto Power Off
• Large, Easy-to-Read Display
• Extruded Aluminum Case
• Instant Selection from up to Eight English/Metric Units
The Series 478A Manometer can be used to measure
positive, negative, or differential pressures. The unit features
selectable units, auto zero, hold and a min/max function. Press the
Hold key to freeze the current pressure measurement on the display.
The 478A Manometer includes a zeroing button to null out any minor
pressure differences.
Specifications
Service: Air and compatible gases.
Wetted Materials: Call us at (888) 886-8185.
Accuracy: ±1.5% F.S. @ 72°F (22.2°C). Includes linearity and
repeatability.
Pressure Hysteresis: ±0.1% of F.S.
Pressure Range: English: -4.00 to 4.00" w.c., Metric 0.996
kPa.
Pressure Limits: 5 psig (.74 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% F.S./°F .
Display: 4 digit LCD (.425"H x .234"W digits).
Power Requirements: 9V alkaline battery. Battery included
but not connected.
Process Connections: Barbed connection for use with 3/16" or
1/4" I.D. tubing.
Weight: 10.8 oz (306 g).
Agency Approvals: CE.
Click here for Dwyer 478A-1 Data Sheet
Below are other pressure ranges available for Series 478A
Digital Manometer:
|
Modle
Number
|
Range
in w.c.
|
Available Pressure Units
|
Resolution
in w.c.
|
Maximum
Pressure
|
|
psi
|
in Hg
|
kPa
|
in w.c.
|
mmHg
|
mbar
|
|
|
-4.0 to 4.0
|
.1445
|
.294
|
.996
|
4.00
|
7.47
|
9.96
|
.01
|
5 psig
|
|
|
-60.0 to 60.0
|
2.168
|
4.41
|
14.95
|
60.0
|
112.1
|
149.5
|
.1
|
5 psig
|
