Dwyer Instruments - Series 1211: 1211-8 Roll-Up Slack Tube
Manometer
Includes plastic case, magnetic mounting clips, two rapid shutoff
connectors, and one bottle of fluorescein green color concentrate
with wetting agent.
1211 Handy Roll-Up Manometer with Laboratory Accuracy
Dwyer Slack Tube Manometers are as accurate as the finest
laboratory "U" gages - yet they are made to roll up compactly for
easy carrying and to withstand rough usage.
Simply unroll the Dwyer Slack Tube Manometer and set
up to read static pressure, vacuum, or differential pressure.
Magnetic clips hold it firmly to any steel surface or hang it on a
nail. Turn connectors one revolution to open. When the pressure is
imposed, add the number of inches one column travels up to the
number of inches the other column travels down. When reading is
completed turn connectors to seal columns, roll up manometer into
compact coil and tuck it away in its plastic case or a tool box. No
fluid lost. No loose caps or inserts to lose.
Dwyer Slack Tube Manometers cover a wide range of
pressure readings. Use them in determining velocity and static
pressures, for leakage, fan and blower tests, calibrating control
devices, checking gas pressure and many other applications. All
models have flexible vinyl-plastic columns and flexible spring
steel scale calibrated in inches of water using water; and inches
of mercury using mercury. Scale is center-mounted between columns
to eliminate parallax error and has a full 2" sliding zero
adjustment.
All Dwyer Slack Tube Manometers feature exclusive
molded nylon tubing connector assemblies with rapid shutoff design
in an acrylic plastic top. One turn counter clockwise and the
instrument is ready for use. Another turn seals the tubes
completely. Molded all-nylon construction makes this assembly
corrosion-proof, leakproof and practically unbreakable. Tubing
connectors extend horizontally allowing 360° freedom. Tubes won't
bend or pinch off.
All models have over pressure safety traps in the top
of both columns to prevent loss of fluid due to over range
pressures or surges in pressure.
Slack Tube Manometers are suitable for intermittent
total pressure to 50 psi and vacuum not exceeding 20" Hg. Avoid
temperatures above 130°F and continuous high total pressure. Not
for use with red gage oil; use only water or mercury.
Click here for Dwyer 1211-8 Data Sheet 
Click here for Dwyer 1211-8 Service Manual
Below are other pressure ranges available for Series 1211
Manometer:
|
Model
|
Range
|
Hg Req'd (oz.)
|
|
|
4-0-4"
|
6
|
|
|
6-0-6"
|
7
|
|
|
8-0-8"
|
9
|
|
|
12-0-12"
|
12-1/2
|
|
|
15-0-15"
|
15
|
|
|
18-0-18"
|
17-1/2
|
|
|
24-0-24"
|
22-1/2
|
|
|
30-0-30"
|
27
|
|
|
36-0-36"
|
32
|
|
|
60-0-60"
|
57
|
|
|
25-0-25 cm
|
11
|
|
|
50-0-50 cm
|
18-1/2
|
|
|
100-0-100 cm
|
35
|
