Series 476A Single Pressure & Series 478A Digital Manometer

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

The Series 476A Single Pressure Differential Pressure Digital Manometer can be used to measure low pressures from -20 to 20 in w.c. with ±1.5% FS accuracy. The Series 478A Single Pressure Differential Pressure Digital Manometer can be used to measure positive, negative, or differential pressures with ±1.5% full-scale accuracy. Both units are constructed of an extruded aluminum case for exceptional durability.

NIST CALIBRATION available in Product Configurator.

Product Applications

Verify field instrumentation performance
Adjust fuel mixture on combustion systems

View All Product Images

Models & Ordering

Filter By

Single Pressure
Differential Pressure
Custom Built Products

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Build Your Custom Part. Use our Product Configurator

Model	Description	Usually Ships*	Price	Order
476A-0 Ships: Same Day Price: $192.00	Digital manometer, range -20 to 20" w.c.	Same Day*	$192.00	Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

Service:: Air and compatible gases.
Wetted Materials:: Consult factory.
Accuracy:: ±1.5% FS @ 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% 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).
Compliance:: CE.

Features

±0.5% FS accuracy
Rugged extruded aluminum housing
One button auto-zero function
Auto power off function to conserve battery life
Instant selection of up to nine English/metric units

Options

-NIST NIST traceable calibration certificate

Accessories

Model Number	Description	Usually Ships*	Price	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	$9.80	Order
A-47X-BOOT	Rubber boot for manometers (manometer not included).	Same Day	$17.00	Order
A-402A	Carrying case for most manometers; tough, gray nylon pouch, double zippered with belt loop	Same Day	$54.50	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

Product Literature

Manuals

Catalog Pages

Series 476A & 478A Catalog Page

SlideShare

Approvals

Drawings

Questions

Question

My new Series 476A Digital Manometer scrolls through random numbers and letters like OFL after I tried to zero it. How do I fix it?

Answer

The 476A will continually display OFL if it has been over pressurized. Feel free to contact our customer service department to setup an RMA if you’d like it repaired.

Related

Series 476A & 478A

Question

How does a manometer measure gage and differential pressure?

Answer

Manometers simply measure the pressure by indicating the amount of displacement a liquid of known weight undergoes when a force is applied. This concept is best explained through illustrations in our Bulletin D-21 or in our Application Guides on how to use pressure products.

Related

Series 476A & 478A

Question

Is there a manometer that is compatible with chlorine gas and sodium hydroxide (bleach)?

Answer

Unfortunately, we do not have any manometers available that can handle chlorine gas or sodium hydroxide (bleach).

Related

Series 477AV

Series 475

Series Mark II

Series 476A & 478A

Question

We use series 475-6-FM Mk III digital manometer. What is the recommended calibration interval?

Answer

We do not have an official recommended calibration interval. However, we would suggest checking the calibration at least once or twice a year depending on the applciation and how often the unit is used.

Related