Series 476A Single Pressure & Series 478A Digital Manometer

Single & Dual Pressure Measurement, Electronic Zeroing, ±1.5% Accuracy

Ideal for field or laboratory use, the Model 476A-0 Single Pressure Digital Manometer measures low pressures from -20 to 20" w.c. with ±1.5% full scale accuracy. Designed especially for the HVAC contractor, the Model 476A-0 can be used to set gas supply pressures, verify pressure switch operation, adjust regulators, check pneumatic systems and computer peripherals. The rugged, handheld unit is constructed with an extruded aluminum case for exceptional durability.

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.

Models & Ordering

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Model Number Description Usually Ships Price Order
476A-0 Digital manometer, range -20 to 20" w.c. Same Day $59.95 Order

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Specifications

Service:
Air and compatible gases.
Wetted Materials:
Consult factory.
Accuracy:
±1.5% F.S. @ 72°F (22.2°C). Includes linearity and repeatability.
Pressure Hysteresis:
±0.1% of F.S.
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% F.S./°F.
Display:
4 digit LCD (.425"H x .234"W digits).
Power Requirements:
9 V alkaline battery, installed non-functional, user replaceable.
Process Connections:
Barbed connection for use with 3/16" or 1/4" I.D. tubing.
Weight:
10.8 oz (306 g).
Agency Approvals:
CE.

Features

  • 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.

Accessories

Model Number Description Usually Ships Price Order
A-402A Nylon carrying pouch for various digital manometers - 7-1/2" x 3" x 2-1/4". Same Day $41.75 Order
UHH-C1 Soft carrying case Same Day $39.00 Order
A-201 Rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3/16" ID, 9' length. Same Day $7.15 Order

Model Chart

Series 476A
EXAMPLE 476A 0 NIST Series 476A-0-NIST Single Pressure Digital Manometer, range -20.0 to 20.0" w.c.., with NIST certificate of calibration.
SERIES 476A     Single Pressure Digital Manometer
RANGE   0   -20.0 to 20.0" w.c.
OPTIONS     NIST NIST Certificate of Calibration

Series 478A
EXAMPLE 478A 0 NIST Series 478A-0-NIST Differential Pressure Digital Manometer, range -4.00 to 4.00" w.c.., with NIST certificate of calibration.
SERIES 478A     Differetnial Pressure Digital Manometer
RANGE   0
1
  -4.00 to 4.00" w.c.
-60.0 to 60.0" w.c.
OPTIONS     NIST NIST Certificate of Calibration

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