Dwyer Instruments SERIES 1221, SERIES 1222, SERIES 1223 Catalog Page
2-1/6
®
SERIES 1221/1222/1223
FLEX-TUBE® U-TUBE MANOMETERS
TEST & DATA
[52.39]
1-1/8
[28.58]
B
A
A
B
Range
Inches H
8 (4-0-4)
12 (6-0-6)
16 (8-0-8)
20 (10-0-10)
-
24 (12-0-12)
1221 1222 1223
36 (18-0-18)
-
Note: Not recommended for vacuum service above 5 in. Hg (68 in w.c.).
The Series 1221/1222/1223 Flex-Tube® U-Tube Manometers combine the inherent
accuracy of the “U” Tube with the durability of tough, long-lasting plastic construction.
The columns are made of 0.375˝ O.D. exible and shatterproof clear butyrate tubing
and are backed by a white scale channel to provide maximum color contrast. These
manometers are ideal wherever a portable, direct reading manometer is needed.
FEATURES/BENEFITS
• Suitable for total pressures up to 100 psi
• High contrast scale for better precision when measuring
APPLICATIONS
• Duct static pressure
• Calibration labs
• Filter monitoring
Portable
Manometers,
MODEL CHART
Model Model Model Ranges
1221-8-W/M
1221-12-W/M
1221-16-W/M
1221-20-W/M
1221-24-W/M
1221-36-W/M
1221-M200-W/M
1221-M300-W/M
1221-M400-W/M
1221-M600-W/M
1221-M1000-W/M
Note: To order models with red gage uid change -W/M to -D.
OPTIONS
To order add sufx: Description
-NIST NIST traceable calibration certicate
1222-8-W/M
1222-12-W/M
1222-16-W/M
1222-20-W/M
1222-24-W/M
1222-36-W/M
1222-M200-W/M
1222-M300-W/M
1222-M400-W/M
1222-M600-W/M
1222-M1000-W/M
1223-8-W/M
1223-12-W/M
1223-16-W/M
1223-20-W/M
1223-24-W/M
1223-36-W/M
1223-M200-W/M
1223-M300-W/M
1223-M400-W/M
1223-M600-W/M
1223-M1000-W/M
8 (4-0-4) in w.c.
12 (6-0-6) in w.c.
16 (8-0-8) in w.c.
20 (10-0-10) in w.c.
24 (12-0-12) in w.c.
36 (18-0-18) in w.c.
M200 (100-0-100) mm w.c.
M300 (150-0-150) mm w.c.
M400 (200-0-200) mm w.c.
M600 (300-0-300) mm w.c.
M1000 (500-0-500) mm w.c.
ACCESSORIES - STANDARD
Model Description
1221
Example: 1230-8-W/M-NIST
1222
1223
1-3/4
[44.45]
Hg Required
to Fill
2O Millimeters H2O Grams Ounces W/M D W/M D W/M D
M200 (100-0-100)
M300 (150-0-150)
M400 (200-0-200)
-
M600 (300-0-300)
-
-
M1000 (500-500)
Series 1221 Flex-Tube
Our simplest, lowest cost basic U-gage. A dependable U-tube manometer that
178.5
225.5
269
314.5
353.1
379.7
491.1
526.6
6.3
7.9
9.5
11.1
12.4
13.4
17.3
18.5
®
U-Tube Manometer
3/4
[19.05]
1221, 2 & 3 Scale
Length“A”
12-1/4
14
16-1/4
18-7/8
20-3/8
23-5/8
24-1/4
28-1/2
27-7/8
32-7/8
28-1/4
33-3/8
40-1/4
47-7/8
43-5/8
52
1221 & 2
O.A. Length “B”
15-1/4
17
19-1/4
21-3/4
23-1/4
26-1/2
27-1/4
31-1/2
30-3/4
35-3/4
31-1/2
36-1/4
43-1/4
50-3/4
46-1/2
55
1223 O.A.
Length “B”
18-1/2
19-7/8
21-1/8
24-5/8
26-1/8
30-3/8
30-1/8
34-3/8
33-5/8
38-5/8
33-3/8
39-1/8
46-1/8
53-5/8
49-3/8
57-7/8
withstands hard use and provides accurate, high visibility readings. For use with
water, mercury or red gage uid. For mercury lled manometers, a scale clamp bar,
®
Part No. A-363 (available as an extra for Series 1221 — and standard on
Dwyer
Series 1222) is recommended. One pair of carrying plugs and a pair of non-kink vinyl
tube connectors are included with each manometer.
®
Series 1222 Flex-Tube
All the features of the 1221 plus magnetic clips for mounting to any vertical steel
U-Tube Manometer
surface, and clamp bar to insure against U-tube slipping. (Especially recommended
for manometers used with mercury.) Both magnets are easily removed and replaced
at the user’s convenience.
®
Series 1223 Flex-Tube
Our nest U-gage — for either portable or stationary use. Safety traps prevent loss of
U-Tube Manometer
indicating uid in case of accidental over-pressure. Tubing is permanently bonded to a
molded, high impact acrylic plastic top that contains safety traps. Large magnetic clips
and clamp bar are provided. Standard type “a” connections include two rapid shut-off
type molded nylon tubing connections, two 3-foot lengths of exible Tygon
tubing, and two 1/8˝ pipe thread to tube adapters.
®
plastic
2 plastic carrying plugs; 2 exible plastic tubing connectors for attachment of 3/16˝ rubber or
plastic tubing without kinking. 1 ounce bottle .826 sp. gr. red gage uid furnished for “D” style
manometers. Fluorescein green dye concentrate furnished with “W/M” style manometers.
2 magnetic mounting clips; tube clamp; 2 plastic carrying plugs and 2 exible plastic tubing
connectors for attachment of 3/16˝ rubber or plastic tubing without kinking. 1 ounce bottle .826
sp. gr. red gage uid furnished for “D” style manometers. Fluorescein green dye concentrate
furnished with “W/M” style manometers.
Magnetic mounting clips; tube clamp and Type “a” connections consisting of two rapid shut
off molded nylon tubing connectors; two 1/8˝ pipe thread to tube adapters; two 3-foot lengths
®
plastic tubing, 1 ounce bottle .826 sp. gr. red gage uid is furnished for “D” style
of Tygon
manometers; uorescein green dye concentrate with “W/M” style.
Tygon® is a registered trademark of Saint-Gobain Performance Corporation
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