Dwyer

Dual Range Flex-Tube® U-Inclined Manometers
STANDARD ACCESSORIES: Two plastic carrying plugs with retainers for use when manometers are not in service. Two magnetic clips to hold instrument to mete surface. Flexible red vinyl plastic tubing connectors. Brass terminal tube ¼" diameter by 8" long. One terminal tube holder. Brass adapter, 1/8" pipe thread to plastic tubing. One 41/2' length of Tygon plastic tubing. One ¾ ounce bottle .826 sp. gr. red gage fluid. Vinyl carrying case.
Use Series 1227 as a regular U-tube manometer to read high-range pressure on the right leg, or as an inclined manometer (shown here) to read low-range pressure on the bottom leg. Simply incline manometer until fluid levels read zero. No spirit level required. Magnetic clips hold the gage in position on steel duct surface.

Series 1227 Manometer,
Fig. 11-2. Most versatile and useful low cost manometer we know of. Designed for installation and servicemen. A sturdy, clear plastic manometer, it offers single, direct readings in two ranges: As a U-tube, it reads from 0 to 16" of water; as an inclined gage, it reads from -.20 to 0 to 2.6" of water. Model 1227M (Metric) is 0 to 400mm water column as a U-tube and -5 to 0 to 70mm water column as an inclined gage. "How-to-use" instructions are printed directly on the scale.

Indicating Tubing -
Clear .400" O.D. tough, shatterproof butyrate. Pressure connection end is bent to provide over pressure protection when used as an inclined gage. One 41/2' x 3/8" Tygon tube included for pressure source connection.

Scale -
Stark white high-impact styrene, 21" long. Adjustable for precise zeroing.

Markings -
1" major, .2" minor graduations on high range; .02" graduations on low range (50mm major, 10mm minor graduations on high range, 10mm major, 1mm minor graduations on low range for metric model). Silkscreened in black on stark white for positive definition. Acrylic-coated for permanence.

 
AS VERTICAL U-TUBE MANOMETER
 AS INCLINED MANOMETER
0-16" water with 1" major
divisions, .2" minor divisions
 Scale is 17" long, reading .20-0-2.6"
water with .02" minor divisioms
Model 1227M (metric)
is 0-400 mm water column
 Model 1227M (metric) is
-5 to 0 to 70mm water column