Series 100 AV Durablock® Air Velocity Gage Kit

Suitable for Total Pressures to 100 psig (6.89 bar), Temperatures to 150°F (65.6°C)

Designed to measure air velocity, static pressure, vacuum or differential pressure, where the additional range of the 400 Series gages is not required. Series 100 Gages offer superb accuracy combined with portability. The Dwyer® Durablock® precision machined solid acrylic plastic construction, the wells and inclined bore are machined to tolerances of ±.0002".

Complete Air Velocity Kits Include:
Dwyer® Inclined Manometer, stainless steel Pitot tube (12" with Models 102 AV & 115 AV), two 9' lengths of rubber tubing with connectors, additional red gage fluid, instruction card H-7, Bulletin H-11 and magnetic mounting clips, air velocity calculator slide rule and carrying case.

Models & Ordering

Model Description Usually Ships Price Order
102-AV
Ships: Next Day
Price: $629.00
Air velocity gage kit, .20-0-2.0" w.c., 400-5500 FPM velocity, 8-1/4" scale, Model 166-12 (12") Pitot tube. Next Day $629.00 Order
115-AV
Ships: Next Day
Price: $766.00
Air velocity gage kit, .05-0-.25" w.c., 400-2000 FPM velocity, 6" scale, Model 166-12 (12") Pitot tube. Next Day $766.00 Order
115T-AV
Ships: 1-2 Weeks
Price: $1,121.00
Air velocity gage kit, .05-0-.25" w.c., 400-2000 FPM velocity, 6" scale, Model 166T (36") Pitot tube. 1-2 Weeks $1,121.00 Order

Features

  • Plastic Body - A 1" thick solid acrylic block, virtually unbreakable. It is stable and free of the danger of distortion.
  • Drilled Bore - Permanently free of bends - never requires recalibration due to distortion.
  • Reflective Chrome Finish Scales - Easily eliminates parallax errors in reading. Adjustable, with thumbscrew locking for easy zeroing. (Model 125 AV uses screw plunger to adjust zero setting).
  • Red Gage Fluid - .826 specific gravity. Forms a well-shaped, easy-to-read meniscus - the result of high wetability.
  • Leveling Adjustment - Screw allows quick, accurate leveling. Integral ground glass bubble level provides ready reference.

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. Next 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. Next 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. Next 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. Next Day $60.50 Order
Pocket size Pitot tube, 1/8 166-12 Pocket size Pitot tube, 1/8" dia., 12" insertion length, 3" tip. Next Day $85.00 Order
Air velocity calculator slide chart. A-532 Air velocity calculator slide chart. Next Day $10.00 Order
Thermometer and terminal tube holder, stainless steel wire. A-357 Thermometer and terminal tube holder, stainless steel wire. Next Day $5.10 Order
Gage connector, shutoff type, for 3/16 A-315 Gage connector, shutoff type, for 3/16" rubber tubing. Next Day $13.75 Order
Magnetic mounting, edge style, secures edge of acrylic manometer with No. 10-32 machine screw and boots insert. A-354 Magnetic mounting, edge style, secures edge of acrylic manometer with No. 10-32 machine screw and boots insert. Next Day $9.40 Order
420103-00 Red scale arrow. 1-2 Weeks $1.70 Order
420104-00 Green scale arrow. 1-2 Weeks $1.70 Order
Rubber latex tubing has less tendency to kink in storage and occupies less
space, thus is best for portable work. 3/16 A-201 Rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3/16" ID, 9' length. Next Day $7.50 Order
A-405 Plastic carrying case for portable inclined gages 109, 100.5, 104-6, 102, 102.5 - 13-1/2" x 10" x 2-3/8". 1-2 Weeks $52.00 Order
Plastic carrying case for portable inclined gages 100, 101, 108, 115 - 12-1/4 A-404 Plastic carrying case for portable inclined gages 100, 101, 108, 115 - 12-1/4" x 6-1/4" x 1-3/4". 1-2 Weeks $48.00 Order
A-536 Metric air velocity calculator slide chart. Next Day $11.00 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
What is the best method of measuring actual air flow in process ducts to verify process air flow sensors (differential pressure sensors, air flow stations, etc.)
Answer
There are two ways to measure air flow in process ducts. The most common means is the use of a Series 2000 Magnehelic® Differential Pressure Gage. This gage can be ordered with a square root output that will read in flow units. You will have to specify the maximum differential pressure at your desired flow rate. Along with the gage, a pitot tube (connected by means of rubber or vinyl tubing) is also used. The pitot tube must be pointed directly into the air stream. Care must be taken to ensure that the pitot tube should be inserted at least 8-1/2 duct diameters downstream from elbows, bends or other obstructions which cause turbulence. The alternative method uses a 100 AV Durablock® Air Velocity Gage kit. The kit includes a manometer, a stainless steel pitot tube, rubber tubing with connectors, and red gage fluid. The pitot tube, pointed directly into the air stream, senses total and static pressure. The manometer then senses velocity pressure (difference between total and static pressure).

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