Omega Products WT4401-D User Manual

OMEGA’S LABORATORY-GRADE BENCHTOP WIND TUNNEL

WT4401-D

U Precise Motor Control for

Adjusting Flowrates

U NIST Calibration Supplied

with Each Wind Tunnel

U Highly Accurate

to 1% of Reading

U Large 101.6 x 101.6 mm

(4 x 4") Test Chamber

U Highly Stable Delta

Pressure Sensor and Readout Included with Each Wind Tunnel

U Fully Instrumented U Optional Environmental

Monitoring Package of Temp, Humidity, Barometric Pressure and Delta P Available

OMEGA’s state-of-the-art wind tunnel is designed to give a highly uniform ﬂow rate over a 152 mm (6") test section. A powerful 12 amp motor with variable speed from 0 to 10,000 RPM is adjustable to give a particular ﬂowrate by a precise motor control unit. Each wind tunnel is supplied with an NIST traceable certiﬁcate.

Shown calibrating the FMA-902A-V1, sold separately, for more information visit omega.com/fma900a

The uniform ﬂowrate is determined by monitoring a highly repeatable differential pressure sensor which has been calibrated to each individual wind tunnel as a system. Each wind tunnel is supplied with two restrictive plates for achieving optimum low ﬂowrates. The established differential pressure measurements versus ﬂowrates are listed from 25 to 9000 FPM. Calibration sheets are included, which makes calibrating different ﬂow sensors simple.

The differential pressure measurement used to establish known ﬂowrates will be affected by barometric pressure and temperature conditions during testing. Depending on the probe being calibrated, humidity may also be a factor.

OMEGA’s deluxe wind tunnel package is an environmental monitoring system that measures barometric pressure, room temperature, humidity and differential pressure. By monitoring room conditions, standard differential pressures can be converted to actual differential pressure readings to ensure accurate ﬂowrates.

For testing different probes, a ¹⁄₂ NPT connection is available. An assortment of compression ﬁttings is provided to help mount the probe under calibration.

WT4401-D includes deluxe

electronics package for

measuring

temperature,

humidity and

barometric

and differential

pressures.

SPECIFICATIONS

Wind Tunnel

Accuracy: 1% rdg

(2% rdg with restrictive plates) Flow Rates: 25 to 9000 fpm

(0.15 to 45 m/s)

Noise: 95 dBA maximum Size: 1.5 m L x 431.8 mm H (5' x 17")

Motor

Power: 120 Vac Current: 12 amps Speed: 10,000 RPM

Motor Control Box

Power: 120 Vac Speed Adjustment: 10 turn pot. Internal Adjustment: Minimum, Maximum,

acceleration and current limit Size: 140 W x 184 L x 89 mm H

(5.53 x 7.25 x 3.5") Weight: Wind tunnel: 22.5 kg (49.5 lb); Standard elec. 3.2 kg (7 lb); Deluxe elec. 7 kg (15.3 lb)

Monitoring Systems

Standard Package:

PX657 127 mm (5") H pressure sensor and DP41-S-A meter with analog output in benchtop case

O differential

The WT4401-S Wind Tunnel Comes with:

• Wind Tunnel

• Electronics Box

• Two Restrictive Plates

• Motor Controller

• Two 0.6 m (5') Lengths of Silicone Tubing

• One Package of Brass Compression Fittings

with PTFE Ferrules (Sizes

• Six Calibration Report Sheets (3 in Metric Units, 3 in English Units)

• Complete Operator’s Manuals for: DP41-S Indicator; Motor; Controller and Wind Tunnel

⁄

, and

⁄

WT4401-D (Deluxe System) Includes All the Accessories for The WT4401-S Plus:

• Operator’s Manuals for all Included Instrumentaion and Sensors

• Calibration Sheet for the Barometer

The WT4401-S comes with standard electronics box. The

WT4401-D comes with deluxe electronics box. Note: All meters used in either the standard or deluxe electronics

package have a 10 Vdc analog output.

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Dimensions: mm (inch)

Deluxe Package:

Same differential system as standard model, plus HX97-A temperature and humidity sensor, PX02C1-16A5T barometric sensor, PSS-D15B power supply, three DP25-E panel meters, and one DP41B-S panel meter. All equipment is enclosed in a heavy duty, air cooled, benchtop metal case. All 4 meters have 0 to 10 Vdc analog outputs.

Wind tunnels come complete

1⁄8, 3⁄16, 1⁄4

with

and

⁄8" brass

compression ﬁttings with PTFE ferrules, two 1.52 m (5') lengths of silicone tubing, operator’s manual with NIST calibration data and pressure sensor with benchtop meter.

The intake air ﬂow passage to this precise wind tunnel is a ﬁberglassconstructed bafﬂe. The honeycomb bafﬂe design insures constant and evenly distributed air intake. The design minimizes turbulent air ﬂow created by movement in front of the intake. The

WT4401 rear

of clear, thick-wall plastic for easy viewing. In back of this test section, the motor pulls the air through the wind tunnel. The motor and intake proﬁles

WT4401 front bafﬂe

rear portion of the intake bafﬂe has a proﬁle design that keeps the stream uniform, while decreasing the area to a

101.6 x

101.6 mm (4 x 4") cross- section.

The test chamber is

101.6 x 101.6 x 152 mm (4 x 4 x 6") and is constructed

utilize ﬁberglass construction, which minimizes airﬂow distortion.

A deluxe monitoring package keeps track of ambient conditions as well as the precise differential pressure measurement. The monitoring and instruments are all packaged inside a single powerful housing. Each sensor has an analog output for use with a strip chart recorder or computer data logging system. Humidity, temperature and barometric sensors are enclosed in the benchtop case for monitoring atmospheric conditions which can inﬂuence the exact air speed.

Flow Ranges Wind Tunnel Conﬁguration FPM M/S No restrictive plates 1000 to 9000 FPM 5.0 to 45 M/S

Restrictive plate A 250 to 1250 FPM 1.25 to 6.3 M/S Restrictive plate B 25 to 350 FPM 0.15 to 1.77 M/S

sensors

The differential pressure cell is connected to the wind tunnel via silicone tubing. The entrance and test chambers’ pressures are monitored, which determines true air speed.

Standard

and Deluxe

Packages Establish

Flowrates from

25 to 9000 FPM

To Order Visit omega.com/wt4401 for Pricing and Details

Model No. Description WT4401-S Wind tunnel with differential pressure monitor WT4401-D Wind tunnel deluxe package (barometric pressure,

WT4401-S-CAL Re-calibration, standard wind tunnel WT4401-D-CAL Re-calibration, deluxe wind tunnel

TVS-1004 Velocity and temperature measurement system (4 sensors) HHF42 Hot wire anemometer FMA-902A-V1 General purpose air velocity transducer, 0 to 1000 FPM

SA1-K Type K self adhesive thermocouples with stripped ends

SA1-RTD-B 100Ω self adhesive RTD temperature sensors with stripped

SA2C-K Type K, curved surface, molded silicon self adhesive

SA2F-K Type K, ﬂat surface, molded silicon self adhesive

ML4C-143-10 Non-reversible OMEGALABEL® temperature monitors with

Comes complete with wind tunnel and everything you need to calibrate probes quickly. Visit omega.com for the complete listing of all accessories included.

For 220 Vac, add sufﬁx “-220V” to model number, no additional charge. Ordering Examples: WT4401-D, deluxe wind tunnel package, SA2C-K Type K

molded silicon self adhesive thermocouple, and FMA-902A-V1, air velocity transducer. WT4401, standard wind tunnel package with HHF42 hotwire anemometer.

temperature, humidity and differential pressure monitoring system)

(0 to 5 V output)

(5-pack)

ends (3-pack)

thermocouple

temperature ratings of 143, 149, 154, and 160°C (10-pack)

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