Dwyer Instruments SERIES 420 Catalog Page
B
SERIES 420
DURABLOCK® INCLINED-VERTICAL MANOMETERS
Accuracy To ±0.25%
PRESSURE
37/64 DIA. MTG. HOLE
C
D
Length of
Vertical
Scale
9˝
4-5/8˝
10-1/8˝
4-5/8˝
10-1/8˝
1˝ X 1/4˝ MTG. SLOTS
Dimensions
16-1/2˝
9-7/8˝
15-1/2˝
10-1/2˝
16-1/8˝
Inclined-vertical manometer
single column
RANGES AND DIMENSIONS - SUITABLE FOR TOTAL PRESSURE UP TO 100 PSIG, TEMPERATURES UP TO 150°F
Model Description
424-10
Single column
421-5
Single column
421-10
Single column
422-5
Double column
422-10
Double column
*Single column metric-ranges and divisions in millimeters.
Dwyer® Series 420 Durablock® Inclined-Vertical Manometers 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 uid movement in this critical
lower part of the range.
FEATURES/BENEFITS
• High-accuracy measurement of low range gas and air pressure suitable for laboratory
and test applications
• Long bore length provides ample room for uid movement for low range sensing
• Precision built to assure device meets the highest standards
APPLICATIONS
• Low pressure laboratory and test applications
Inclined Range
Inches of Water
0-2.0
0-1.0
0-1.0
0-1.0
0-1.0
Inclined-vertical manometer
double column
Inclined
Minor Div.
.01
.01
.01
.01
.01
Length of
Inclined
Scale
20˝
6-1/2˝
6-1/2˝
6-1/2˝
6-1/2˝
Vertical Range
Inches of Water
2.1-10
1.1- 5
1.1-10
1.1-5
1.1-10
Vertical
Minor Div.
.10
.10
.10
.10
.10
ACCESSORIES - STANDARD
Description
Include two 1 oz bottles of .826 red gage uid (1.91 blue gage oil for models 421-23
and 422-23), rapid shut-off type “a” connections, two 3 ft lengths of clear plastic
tubing and two 1/8˝ NPT tubing adapters — two sets for double column models.
A
25-1/4˝
9-5/8˝
9-5/8˝
11-1/2˝
11-1/2˝
12-5/8˝
4-7/8˝
4-7/8˝
5-1/8˝
5-1/8˝
G
F
E
Weight
1˝
5/8˝
5/8˝
5/8˝
5/8˝
10-1/2˝
6-1/2˝
6-1/2˝
6-1/2˝
6-1/2˝
5-3/8˝
3-1/4˝
3-1/4˝
3-1/4˝
3-1/4˝
16˝
9-7/8˝
15-1/2˝
10-1/2˝
16-1/8˝
lb-ozA B C D E F G
22-12
4-12
6-10
6-10
10-13
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