Series 420 Durablock® Inclined/Vertical Manometer
Accuracy to ±0.25%
Dwyer® Series 420 Inclined-Vertical Manometer are extremely accurate instruments designed and made especially for precision measurement of low differential pressures in laboratory and test applications. The inclined range bore has a length of 20" to provide ample multiplication of indicating fluid movement in this critical lower part of the range.
NIST CALIBRATION available in Product Configurator.
Click here, if you require a Safety Data Sheet for the Blue Gage Fluid or the Red Gage Fluid.Product Applications
- Low pressure laboratory and test applications
Starting at $1,380.80
Features
- 1-1/4" THICK ACRYLIC PLASTIC BODY is a solid block, virtually unbreakable, stable and absolutely free of the danger of distortion.
- 3/16" BORES, ACCURATE TO ± .0002" are permanently free of bends or crooks, will not require recalibration because of distortion.
- GROUND GLASS BUBBLE LEVEL sensitive to 115-125 sec./2 MM. is 1-1/2" long x .375" diameter and provided with two red lines for easy visibility and alignment.
- PARALLAX-FREE READING for maximum accuracy and consistency is achieved by simply aligning the meniscus with its image reflected in the polished aluminum scale.
- SELECTED GAGE FLUID with high wetability characteristics forms a consistent, well shaped meniscus for perfect readability.
- O-RING SEALED FLUID LEVEL PLUNGER ADJUSTMENT for easy zeroing.
- PRECISION BUILT to assure device meets the highest standards.
Product Literature
Manuals
Catalog Pages
SDS
Model Chart
SERIES 421EXAMPLE | 421 | 5 | B | Series 421-5-B Durablock® Inclined-Vertical Manometer, single column, 6-1/2" inclined scale, range 0-1" w.c. inclined and 1-5" w.c. vertical, with type B connections. |
SERIES | 421 | Single Column, 6-1/2" Inclined Scale | ||
RANGE |
5 10 23 130MM 250MM 58CM |
0-1" w.c. Inclined and 1-5" w.c. Vertical 0-1" w.c. Inclined and 1-10" w.c. Vertical 0-2" w.c. Inclined and 2-23" w.c. Vertical 0-25 mm w.c. Inclined and 30-130 mm w.c. Vertical 0-25 mm w.c. Inclined and 30-250 mm w.c. Vertical 0-5.5 cm w.c. Inclined and 7-58 cm w.c. Vertical |
||
OPTIONS |
B C D E AT NIST |
Type B Connections Type C Connections Type D Connections Type E Connections Aluminum Tag NIST Certificate of Calibration |
SERIES 422
EXAMPLE | 422 | 10 | AT | Series 422-10-AT Durablock® Inclined-Vertical Manometer, double column, 6-1/2" inclined scale, range 0-1" w.c. inclined and 1-10" w.c. vertical, with aluminum tag. |
SERIES | 422 | Double Column, 6-1/2" Inclined Scale | ||
RANGE |
5 10 23 130MM 250MM 58CM |
0-1" w.c. Inclined and 1-5" w.c. Vertical 0-1" w.c. Inclined and 1-10" w.c. Vertical 0-2" w.c. Inclined and 2-23" w.c. Vertical 0-25 mm w.c. Inclined and 30-130 mm w.c. Vertical 0-25 mm w.c. Inclined and 30-250 mm w.c. Vertical 0-5.5 cm w.c. Inclined and 7-58 cm w.c. Vertical |
||
OPTIONS |
B C D E AT NIST |
Type B Connections Type C Connections Type D Connections Type E Connections Aluminum Tag NIST Certificate of Calibration |
SERIES 424
EXAMPLE | 424 | 132MM | NIST | Series 424-132MM-NIST Durablock® Inclined-Vertical Manometer, single column, 20" inclined scale, range 0-50 mm w.c. inclined and 52-132 mm w.c. vertical, with NIST certificate of calibration. |
SERIES | 424 | Single Column, 20" Inclined Scale | ||
RANGE |
5 10 132MM 250MM |
0-2" w.c. Inclined and 2-5" w.c. Vertical 0-2" w.c. Inclined and 2-10" w.c. Vertical 0-50 mm w.c. Inclined and 52-132 mm w.c. Vertical 0-50 mm w.c. Inclined and 52-250 cm w.c. Vertical |
||
OPTIONS |
B C D E AT NIST |
Type B Connections Type C Connections Type D Connections Type E Connections Aluminum Tag NIST Certificate of Calibration |
Questions
- Question
- What are the principle advantages of red gage fluid over water for use in manometers?
- Answer
- Red gage fluid slowly evaporates and will not freeze above -40F°. It is more readable and produces slightly expanded scales for better reading resolution.
- Question
- Is routine maintenance required for a Dwyer red gage fluid type manometer?
- Answer
- Yes. The zero point should be checked periodically as well as the fluid level. After a year of service, particularly with dirty air, the fluid should be replaced to assure that specific gravity changes are not affecting the accuracy of the reading.
Write Your Own Review
Model | Description | Availability* | Price | |
---|---|---|---|---|
A-101 | 1 oz dispenser bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$10.85 |
|
A-102 | 4 oz bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$21.15 |
|
A-103 | 1 pt bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$46.95 |
|
A-104 | 1 qt bottle of red gage fluid, .826 sp. gr. | 1-3 days* |
$88.25 |
|
A-110 | 1 oz dispenser bottle of blue gage fluid, 1.910 sp. gr. | 1-3 days* |
$203.90 |
|
A-220 | Clear flexible vinyl tubing, 3/16" ID x 5/16" OD, lengths to 500'; 45 psi maximum pressure @ 73°F. | 1-3 days* |
$0.50 |
|
A-315 | Gage connector, shutoff type, for 3/16" rubber tubing. | 1-3 days* |
$19.10 |
|
A-339 | Adapter, brass, 1/8" NPT to 3/16" rubber and 1/8" ID plastic tubing. | 1-3 days* |
$5.55 |