Dp Engineers

Pandav Nagar, Delhi

flex tube u tube manometer (series 1221/1222/1223)

flex tube u tube manometer

series 1221/1222/1223 flex-tube u-tube manometer

suitable for pressures up to 100 psi, better precision

these inexpensive manometers measure positive, negative and differential pressures. Dwyer flex-tube u-tube manometers combine the inherent accuracy of the simple "u" tube with the durability of tough, long-lasting plastic construction. Columns are of .375" o.d. Flexible and shatter proof clear butyrate tubing. They are easily accessible for cleaning. Indicating tube is backed by white scale channel to provide maximum color contrast. Scales are extruded high impact polystyrene plastic, formed to hold columns in perfect alignment. Stark white scales have graduations and numbers silkscreen-printed in black for maximum legibility.you can choose from numerous models and features including over-pressure safety traps, in full scale ranges from 8" to 36" of water or mercury. All are suitable for total pressures to 100 psi - for determining velocity and static pressures, leakage, fan and blower efficiency, filter resistance, and gas pressures. Ideal wherever a portable, direct reading manometer is needed. Standard ranges and markings as shown, or special ranges, colors, logos and brand names for oem quantity orders are available.product applications: duct static pressure, calibration labs, filter monitorin, modeldescription

1221-12-w/mu-tube manometer, range 6-0-6" w.c., 7.9 oz (225.5 g) mercury required to fill.

1221-16-w/mu-tube manometer, range 8-0-8" w.c., 9.5 oz (269 g) mercury required to fill.

1221-20-w/mu-tube manometer, range 10-0-10" w.c., 11.1 oz (314.5 g) mercury required to fill.

1221-24-w/mu-tube manometer, range 12-0-12" w.c., 13.4 oz (379.7 g) mercury required to fill.

1221-36-w/mu-tube manometer, range 18-0-18" w.c., 17.3 oz (491.1 g) mercury required to fill.

1221-8-w/mu-tube manometer, range 4-0-4"w.c., 6.3 oz (178.5 g) mercury required to fill.

features:minor divisions of 1/10" water column (or 2mm water column on metric units) are silkscreened in jet black on stark white scale for positive definition. Easy to read, even at a distance, they are acrylic coated for permanence. All models are furnished with one 3/4 ounce bottle of fluorescein green color concentrate with special wetting agent for w/m models, or 3/4 ounce bottle of red gage fluid for "d" units.series 1221 manometer - our simplest, lowest cost basic u-gage. A dependable u-tube manometer that withstands hard use and provides accurate, high visibility readings. For use with water, mercury or red gage fluid. For mercury filled manometers, a scale clamp bar, dwyer part no. A-363 (available as an extra for series 1221 - and standard on 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 manometer - all the features of the 1221 plus magnetic clips for mounting to any vertical steel 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 manometer - our finest u-gage - for either portable or stationary use. Safety traps prevent loss of indicating fluid 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' lengths of flexible tygon plastic tubing, and two 1/8" pipe thread to tube adapters.

series 490a hydronic differential pressure manometers (series 490a)

series 490a hydronic differential pressure manometers

liquid & gas pressure measurement, 0.5% fs accuracy

the series 490a hydronic differential pressure manometers are versatile, handheld, battery operated manometers available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316lss. A new feature added to the series 490a is a field adjustable damping, which allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications.

new! 490a-hkit option is located in the product configurator.

hydronic meter kit includes: (2) six foot high-pressure rated tubing with shut off valves, high pressure 3-way valve, 8 ft poly tubing for purges, hard travel case, handheld carrying strap, 1/16" x 1 1/2", 1/8" x 3" and 1/8" x 1-1/2" pairs of pressure probes, 90 flare to 1/4" npt fittings, adjustable 8" wrench, ptfe tape, and magnetic protective rubber boot. Nist calibration certificate comes standard.

dwyer instruments, inc. Was recognized for excellence in product design in the 14th annual dealer design awards program sponsored by the air conditioning heating & refrigeration news magazine (the achr news). An independent panel of contractors acted as judges in the contest that had 81 entries. The companys series 490a-hkit hydronic differential pressure manometer was the bronze award winner in the electronic and hand tools category. The achr news is the leading trade magazine in the heating, ventilating, air conditioning, and refrigeration industries. To read the full announcement

product applications :chiller to coils for freeze protection, hydronic valve balancing, measure pressure drop across pumps, refrigerant pressure testing

modeldescription

490a-1wet/wet handheld digital manometer, 0 to 15 psi (0 to 103.4 kpa)

490a-2wet/wet handheld digital manometer, 0 to 30 psi (0 to 206.9 kpa)

490a-3wet/wet handheld digital manometer, 0 to 50 psi (0 to 344.8 kpa)

490a-4wet/wet handheld digital manometer, 0 to 100 psi (0 to 689.5 kpa)

490a-5wet/wet handheld digital manometer, 0 to 500 psi (0 to 3448 kpa)

490a-6wet/wet handheld digital manometer, 0 to 200 psi (0 to 1379 kpa)

specifications

service:compatible gases & liquids.

wetted materials:without valve: 316l ss, -3v option: 316lss, buna-n, silicone, grease, ptfe, brass 360, copper, reinforced acetal copolymer.accuracy:0.5% fs, 60 to 78f (15.6 to 25.6c); 1.5% fs from 32 to 60f and 78 to 104f (0 to 15.6c and 25.6 to 40c).pressure hysteresis:0.1% fs.pressure limits:see chart on catalog page.electronic temperature limits:32 to 140f (0 to 60c).storage temperature limits:-4 to 176f (-20 to 80c).display:0.42" (10.6 mm) 4 digit lcd.resolution:see chart on catalog page.power requirements:9 v alkaline battery, installed non-functional, user replaceable.

process connections:two 1/8" (3.18 mm) female npt.weight:14.1 oz (400 g).agency approvals:ce.

features

seven user-selectable english and metric units

stores up to 40 readings for later recall

backlight for use in dim areas

digital dampening for low pressure - high resolution logging accuracy

automatic resolution adjustment for finer control

related products

series 490 wet/wet handheld digital manometer

pressure : see chart on catalog page.

diameter : 0.42

condition : new

features : easy to fit, perfect strength

type : series 490a hydronic differential pressure manometers

application : compatible gases & liquids.display type : digital, 0.42, material : stainless steel, color : black

series 476a single pressure & series 478a digital manometer (series 476a and 478a)

series 476a single pressure & series 478a digital manometer

single & dual pressure measurement, electronic zeroing, 1.5% accuracy

the series 476a single pressure differential pressure digital manometer can be used to measure low pressures from -20 to 20 in w.c. With 1.5% fs accuracy. The series 478a single pressure differential pressure digital manometer can be used to measure positive, negative, or differential pressures. Both units are constructed of an extruded aluminum case for exceptional durability.

product applications

verify field instrumentation performance

adjust fuel mixture on combustion systems

modeldescription

476a-0digital manometer, range -20 to 20" w.c.

478a-0digital differential manometer, range -4 to 4" w.c.

478a-1digital differential manometer, range -60 to 60" w.c.

specifications

service:air and compatible gases.

wetted materials:consult factory.

accuracy:1.5% fs @ 72f (22.2c). Includes linearity and repeatability.

pressure hysteresis:0.1% of fs.

pressure limits:5 psig (.34 bar).

temperature limits:0 to 140f (-17.8 to 60c).

compensated temperature limits:32 to 104f (0 to 40c).

thermal effect:0.05% f.s./f.

display:4 digit lcd (.425"h x .234"w digits).

power requirements:9 v alkaline battery, installed non-functional, user replaceable.

process connections:barbed connection for use with 3/16" or 1/4" i.d. Tubing.

weight:10.8 oz (306 g).

agency approvals:ce.

features

one button auto-zero function

auto power off function to conserve battery life

rugged extruded aluminum housing

instant selection of up to nine english/metric units

0.5% fs accuracy

accessories

model numberdescription

a-201rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3/16" id, 9' length.

a-47x-bootrubber boot for manometers (manometer not included).

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application : air and compatible gases.

brand name : dwyer usa

condition : new

usage : air and compatible gases.

features : easy to fit, perfect strength

diameter : 4 digit lcd (.425

display type : digital, 4 digit lcd (.425

material : consult factory.

type : series 476a single pressure & series 478a digital manometer

color : black

Inclined Manometer

dwyer durablock series 250-af gages are precision machined 1" thick solid acrylic plastic, virtually unbreakable and free of distortion. The fluid bore is precision drilled to .0002" to assure life long accuracy. A glass spirit level is built into the body and encapsulated to prevent damage or tampering. The scale is mirror polished chrome plated brass to assure parallax free reading by alignment of the meniscus with its reflection. Safety traps are incorporated in the body to prevent loss of fluid due to pressure surges. Red and green signal flags indicate clearly when a filter change is necessary. Gages are suitable for use in ambient temperatures of -20 to 150f. Connection fittings are positively sealed by "o" rings but easily removed for zeroing or addition of fluid. Furnished complete with instructions.

thick : 5/8"

modeldescription

209-afinclined air filter gage, range .20-0-3.0" w.c., 5-1/2" inclined scale,

250.5-afinclined air filter gage, range .10-0-1.0" w.c., 8" inclined scale,

250-afinclined air filter gage, range .10-0-1.0" w.c., 5-1/2" inclined scale,

251-afinclined air filter gage, range .05-0-.50" w.c., 5-1/2" inclined scale,

252-afinclined air filter gage, range .20-0-2.0" w.c., 8" inclined scale,

350-afinclined air filter gage, range 0-4" w.c., 4-1/2" inclined scale

451-afinclined air filter gage, range 0-1" w.c., 8" inclined scale

452-afinclined air filter gage, range 0-2" w.c., 8" inclined scale, 2 psi max. Pressure.

specifications

for architects and engineers

an air filter gage for measuring the resistance to air flow through the filters shall be installed, one for each bank of filters. The gage shall be of inclined tube differential type (equipped with vent valves for zeroing) shall be of solid acrylic plastic construction with built-in level vial (and over pressure safety traps 250 series only), shall have an adjustable mirror-polished scale, shall be furnished complete with two 5-foot lengths 1/4" tubing, two static pressure tips, mounting hardware, additional bottle of red gage fluid and instructions.

features

high accuracy and easy to use, making it a dependable device for many years of service

easy to read polished inclined scale allows minute pressure differences to be read

no moving parts mean no calibration or nothing to wear out

accessories

model numberdescription

a-310b3-way vent valve, plastic, 1/8" npt to 1/4" metal tubing, 10 psi rating.

a-317gage connector, 1/8" pipe thread opening, less od thd., for slip fit in 3/4" dia opening in 250 series af gages.

a-1011 oz dispenser bottle of red gage fluid, .826 sp. Gr.

a-1024 oz bottle of red gage fluid, .826 sp. Gr.

a-1031 pt bottle of red gage fluid, .826 sp. Gr.

a-1041 qt bottle of red gage fluid, .826 sp. Gr.

a-322gage connector for 1/4" tubing, slip fits in 3/4" opening in 250 series af gages (compression nut and ferrule not included).

a-324compression fitting, brass 1/8" npt to 1/4" metal tubing.

420103-00red scale arrow.

420104-00green scale arrow.

a-210aluminum tubing is recommended for permanent installations. 1/4" od, 5' length, 500 psi maximum pressure @ 200f.

a-603"t" kit, accessory package for using pressure switch in conjunction with an air filter kit equipped magnehelic or series 250 af gages, includes two 1/8" npt to 1/4" tubing compression fittings & two compression tees.

Case Material : Solid Acrylic Plastic

Material : Solid Acrylic Plastic

Type : Inclined Manometer

Application : Industrial Use, Air Filter Gage

Features : Easy To Fit, Perfect Strength

Display Type : Analog

Condition : New

Brand Name : DWYER USA

Housing Material : Solid Acrylic Plastic