Omega 471B-1, 473B-1, 485B-1 User guide

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MODELS 471B-1/473B-1/485B-1 | HANDHELD TEST INSTRUMENTS

471B-1

473B-1

485B-1

BENEFITS/FEATURES

• Universal base handheld compatible with Dwyer AP1 thermo-anemometer, RP1 thermo-hygrometer, and VP1 100 mm thermo-

anemometer wired probes (sold separately)

• Visible in any condition due to high contrast and backlit LCD display

• Able to store up to 99 readings for later evaluation

• Easy to transport when paired with the rugged aluminum case or protective soft case

DESCRIPTIONAPPLICATIONS

• Residential balancing

• Commercial air balancing

• HVAC inspections

• Industrial process and dust collection system verication

Models 471B-1/473B-1/485B-1 Handheld Test Instruments are versatile and compact units that quickly and easily measure a variety of air quality standards in imperial or metric units. Model 471B-1 is provided with the Dwyer AP1 thermo-

anemometer probe and is able to measure air velocity or volumetric air ow, as well

as air temperature. Model 473B-1 is provided with Dwyer VP1 100 mm vane thermo-

anemometer probe and is able to measure air velocity or volumetric air ow, as well

as air temperature and humidity. Model 485B-1 is provided with Dwyer RP1 thermohygrometer probe and is able to measure relative humidity and air temperature.

AP1, RP1, and VP1 probes are automatically recognized when plugged into the handheld, and can be interchanged without needing to adjust calibration

SPECIFICATIONS

Service Dry, clean air.

Temperature Limits Process: -20 to 212°F (-29 to 100°C); Ambient: 5 to 125°F (-15 to 51°C).

Display 4.5 digit backlit display.

Air Velocity Range 471B-1: 45 to 6000 FPM (0.23 to 30 m/s); 473B-1: 40 to 5000 FPM (0.32 to 25 m/s); 485B-1: N/A.

Air Velocity Accuracy 471B-1: ±3% FS; 473B-1: ±1.5% of reading ±20 FPM (±0.1 m/s) [0.25 to 10 m/s], ±1.5% of reading ±40 FPM (±0.2

m/s) [10 to 20 m/s], ±1.5% of reading ±60 FPM (±0.3 m/s) [20 to 25 m/s]; 485B-1: N/A.

Volumetric Air Flow Range 471B-1/473B-1: 19,999 in selected ow units; 485B-1: N/A.

Temperature Range 471B-1: -40 to 212°F (-40 to 100°C); 473B-1: -20 to 212°F (-29 to 100°C); 485B-1: -20 to 140°F (-28 to 60°C).

Temperature Accuracy 471B-1: ±0.5°F (±0.28°C) [32 to 122°F], ±1.5°F (±0.83°C) [Rest of range]; 473B-1/485B-1: ±0.9°F @ 77°F (±0.5°C

@ 25°C).

Relative Humidity Range 471B-1: N/A; 473B-1/485B-1: 0 to 100% RH.

Relative Humidity Accuracy 471B-1: N/A; 473B-1/485B-1: ±2% RH @ 77°C (25°C) [10 to 90% RH].

Probe Length 8˝ (203 mm).

Cable Length 28˝ (71 cm) retracted; 6´ (183 cm) extended.

Power Requirements 9 V alkaline battery, installed non-functional, user replaceable.

Weight 471B-1: 16 oz (454 g); 473B-1: 18.4 oz (521 g); 485B-1: 16 oz (454 g).

Agency Approvals CE.

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DIMENSIONS

16-1

5/8

14-23/64

[425.62]

4-13/64

[106.65]

1/64

[410.61]

6-11/64

6-1/32

[153.25]

471B-1 473B-1 485B-1

[156.59]

2-13/16

[71.44]

16-3/4

6-1/32

[153.16]

HOW TO ORDER

Use the bold characters from the chart below to construct a product code.

473B -1 -NIST

SERIES

471B: Hot wire thermo-anemometer test instrument 473B: 100 mm vane thermo-anemometer test instrument 485B: Thermo-hygrometer test instrument

6-5/32

[156.52]

2-13/16 [71.44]

[15.87]

[364.92]

6-5/32

6-1/32

[153.16]

[156.52]

2-13/16

[71.44]

OPTIONS

-COC: Certicate of calibration (473B only)

-FC: Factory calibration (473B only)

-NIST: NIST traceable calibration certicate

PROBE LENGTH

-1: 8˝ (203 mm)

ACCESSORIES

Model Description A-47X-BOOT A-VPX-CKIT AP1 RP1 UHH-C2 VP1

Protective magnetic rubber boot Vane hood kit Hot wire thermo-anemometer probe with coiled cable Thermo-hygrometer probe with coiled cable Hard carrying case 100 mm vane thermo-anemometer probe with coiled cable

DWYER INSTRUMENTS, INC.

Printed in U.S.A. 6/21 DS-471B-1_473B-1_485B-1 Rev. 2

Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.