1. www.hvac.vn Miscellaneous Test Equipment Combustion, Tachometers, Hygrometers The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2014 Dwyer Instruments, Inc.

2. www.hvac.vn Introduction – Model 450A Monitors ambient carbon monoxide levels Dual-line, back-lit LCD screen displays current CO and maximum CO level since last reset Audible alarm for levels above 25 PPM Compact size and includes carrying case with belt loop to use as personal CO alarm

3. www.hvac.vn General Specifications Range: CO: 0 to 999 PPM ± 20% 100 PPM of reading 170 mm x 43 mm physical size Battery operated with 3 AAA alkaline batteries

4. www.hvac.vn Introduction – Model 1205B Monitors carbon monoxide and carbon dioxide in ducts or rooms Large LCD screen displays CO and CO2 Stores 255 time stamped sets Can output measurements to a serial printer Rotary dial for parameter selection on the display

5. www.hvac.vn General Specifications Range: CO: 0 to 1000 PPM ± 5% CO2: 200 to 4000 PPM ± 5% Probe: 200 mm insertion length Battery operated or line voltage power supply

6. www.hvac.vn Introduction – Model 1207A Allows for easy adjustment of boilers for optimum energy efficiency Large LCD screen displays four parameters Stores 255 time stamped sets Can output measurements to a serial printer Ready to use in Natural Gas, Light Oil, Propane, Butane, LPG, and Wood Pellet Applications

7. www.hvac.vn General Specifications Range: O2: 0 to 21% ± 0.2% CO: 0 to 2000 PPM ± 5% CO2: 0 to 30% ± 0.3% Flue and Net Temp: 0 to 600°C ± 0.3% Efficiency: 0 to 99.9% ± 1% Excess Air: 0 to 250% ± 0.2% Probe: 200 mm insertion length Battery operated or line voltage power supply

8. www.hvac.vn Applications Measuring flue gases Calibration of boiler systems Combustion tests Monitoring indoor air quality

9. www.hvac.vn Introduction – Model TAC-L Portable Digital Tachometer Measures rotational speed Reads up to 508 mm Includes LCD with backlit display

10. www.hvac.vn General Specifications TAC-L Accuracy: ±0.05% Range Non-Contact (RPM): 2.5 to 99,999 RPM Contact (RPM): 0.1 to 19,999 RPM Non Contact Measuring Distance: 50 to 500 mm Sample Time: 0.8 seconds

11. www.hvac.vn Introduction – Model TAC3 Ergonomic Design 5 digit alphanumeric LCD Easy to switch between English and Metric units Includes NIST certification Can include remote optical sensor to take readings in hard to reach locations

12. www.hvac.vn General Specifications – TAC3 Accuracy: ± 0.05% Display: Dual LCD display Measurement Distance: up to 7.6 m and up to 70° from perpendicular Battery Powered

13. www.hvac.vn Applications Measure Rotational speed of: Saw blades Grinders Engines Motors Powder and bulk conveyor belts HVAC fan motors

14. www.hvac.vn Introduction – Model 471B-1 Handheld instrument used for measuring relative humidity and temperature Can calculate dew point and wet bulb temperature Stores up to 99 readings with the non-volatile memory function

15. www.hvac.vn General Specifications Display: 4.5 digit LCD Range RH: 0 to 100% (non-condensing) Temperature: -20 to 140°F Accuracy RH: ±2% FS over 10 to 90% RH @ 25°C Temperature: ±0.54°C @ 25°C Weight: 16 oz

16. www.hvac.vn General Specifications Probe length: 200 mm Power Requirements 9V alkaline battery, installed, non-functional, user replaceable Agency Approvals: CE

17. www.hvac.vn Introduction – Model TH2-10 Handheld instrument used for measuring relative humidity and temperature Can calculate dew point and wet bulb temperature Stores up to 99 readings with the non-volatile memory function

18. www.hvac.vn General Specifications Display: 4.5 digit LCD Range RH: 0 to 100% (non-condensing) Temperature: -28.9 to 60°C Accuracy RH: ±2% FS over 10 to 90% RH @ 25°C Temperature: ±0.54°C @ 25°C Weight: 16 oz