Series 1227 Dual Range Flex-Tube® U-Inclined Manometer

0.2" Minor Scale Divisions, Accuracy +/- 0.1" W.C.

Use Series 1227 as a regular U-tube manometer to read high-range pressure on the right leg, or as an inclined manometer 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 a steel duct surface.

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 400 mm water column as a U-tube and -5 to 0 to 70 mm water column as an inclined gage. "How-to-use" instructions are printed directly on the scale.

Click here, if you require a Safety Data Sheet for the Red Gage Fluid.

California Residents:  Click Here for Proposition 65 WARNING.

Product Applications

  • Fan status
  • Filter monitoring

Models & Ordering

Model Description Usually Ships Price Order
1227
Ships: Same Day
Price: $83.00
Dual range U-inclined manometer, 0-16" w.c. vertical, .20-0-2.6" inclined. (English units) Same Day $83.00 Order
1227M
Ships: Less Than 1 Week
Price: $83.00
Dual range U-inclined manometer, 0-400 mm vertical, -5-0-70 mm inclined. (Metric units) Less Than 1 Week $83.00 Order

Features

  • Reads 0 to 16 in w.c. as a U-tube and -0.20 to 0 to 2.6 in w.c. as an inclined gage
  • Clear, shatterproof indicating tube provides overpressure protection
  • Black markings on a stark white scale for positive definition

Accessories

Model Number Description Usually Ships Price Order
1 oz dispenser bottle of red gage fluid, .826 sp. gr. A-101 1 oz dispenser bottle of red gage fluid, .826 sp. gr. Same Day $7.30 Order
4 oz bottle of red gage fluid, .826 sp. gr. A-102 4 oz bottle of red gage fluid, .826 sp. gr. Same Day $14.00 Order
1 pt bottle of red gage fluid, .826 sp. gr. A-103 1 pt bottle of red gage fluid, .826 sp. gr. Same Day $32.25 Order
1 qt bottle of red gage fluid, .826 sp. gr. A-104 1 qt bottle of red gage fluid, .826 sp. gr. Same Day $60.50 Order
1227-CC Vinyl carrying case for the 1227 manometer. 1-2 Weeks $16.00 Order
Gage plug with retainer loop, polyethylene plastic, for 1/4 A-356 Gage plug with retainer loop, polyethylene plastic, for 1/4" ID tubing, slip loop over tubing OD and insert plug for seal. Same Day $3.60 Order
Flexible red PVC connector, 3/16 A-319 Flexible red PVC connector, 3/16" ID rubber tubing to 1/4" ID plastic tube for 1221,1222 and 1227 manometers. Same Day $3.50 Order
Terminal tube, brass, 1/4 A-344 Terminal tube, brass, 1/4" diameter tube, 8" length. Same Day $4.90 Order
Adapter, brass, 1/8 A-339 Adapter, brass, 1/8" NPT to 3/16" rubber and 1/8" ID plastic tubing. Same Day $4.00 Order
Clear flexible vinyl tubing is easily inspected, and is therefore best for test
applications where a possibility of fluid entering the tubing exists. 3/16 A-220 Clear flexible vinyl tubing is easily inspected, and is therefore best for test applications where a possibility of fluid entering the tubing exists. 3/16" ID x 5/16" OD, lengths to 500'; 45 psi maximum pressure @ 73°F. Same Day $0.25 Order
Thermometer and terminal tube holder, stainless steel wire. A-357 Thermometer and terminal tube holder, stainless steel wire. Same Day $5.10 Order
Magnet assembly for 1222 manometers, 2 required (3 required for 1222-36 and M-1000). A-364 Magnet assembly for 1222 manometers, 2 required (3 required for 1222-36 and M-1000). Same Day $7.30 Order

Drawings

Questions

Question
What are the principle advantages of red gage fluid over water for use in manometers?
Answer
Red gage fluid is slow to evaporate, won't freeze, 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.
Question
Will the water manometers freeze?
Answer
Yes, if the temperature drops below 32 degrees Fahrenheit, the fluid in the manometer will freeze. The fluid used in "W/M" style manometers is water-based with a small amount of fluorescent green fluid to enhance the meniscus. The other gage fluids have a lower freezing point, however, it is recommended that the manometers be stored above 32 degrees Fahrenheit.

Photo Downloads

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