Anemometer à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ DT-619 ÊÒÁÒöÇÑ´¤èÒ¤ÇÒÁàÃçÇÅÁ ÍسËÀÙÁÔÅÁ ÍѵÃÒÅÁ CFM/CMM ªèǧÇÑ´¤ÇÒÁàÃçÇÅÁ 0.40 ¶Ö§ 30 àÁµÃ/ÇÔ¹Ò·Õ(àÅ×͡˹èÇÂä´é ¡Á/ªÁ,¿Øµ/¹Ò·ÕÏ ªèǧÇÑ´ÍѵÃÒÅÁ 0 ¶Ö§ 9999 CFM/CMM ÍسËÀÙÁÔ -10 ¶Ö§ 60C ÊÒÁÒöºÑ¹·Ö¡¢¹Ò´¢Í§¾×é¹·Õè˹éҵѴä´é¶Ö§ 8 ¤èÒ (µÒÃÒ§àÁµÃ , µÒÃÒ§¿Øµ) ÊÒÁÒöÍèÒ¹¤èÒà©ÅÕè 20 ¤èÒ ¢Í§¡ÒÃÇÑ´ÍѵÃÒÅÁ à«ç¹à«ÍÃìẺ㺾Ѵ ¢¹Ò´àÊé¹¼èÒ¹ÈÙ¹Âì¡ÅÒ§ 72 ÁÁ ẺáçàÊÕ´·Ò¹µèÓ ¾ÃéÍÁ¿Ñ§ªÑè¹ ¤éÒ§¤èÒ , ºÑ¹·Ö¡¤èÒÊÙ§ÊØ´ µèÓÊØ´ , »Ô´à¤Ã×èͧÍѵâ¹ÁÑµÔ DT-619CFM/CMM Thermo Anemometer The CFM/CMM Thermo Anemometer instrument measures Air Velocity, Air Flow (volume) and Temperature. The large, easy-to-read backlit LCD includes primary and secondary displays plus numerous status indicators. The meter is shipped fully tested and calibrated and with proper use will provide years of reliable service. Features: 1. Air Velocity Measurements (Single Point) 2. Air Velocity Averaging Mode 3. Air Flow Measurements (CMM / CFM) 4. Air Flow Averaging Mode 5. Data Hold (Air Velocity/Air Flow) 6. MAX/MIN/AVG Record (Air Velocity/Air Flow) 7. Automatic Power OFF Circuit Custom LSI microprocessor circuit Display Dual function 0.5" (13 mm) 4-digit LCD Sampling rate 1 reading per second approx. Sensors Air velocity/flow sensor: Conventional angled vane arms with low-friction ball bearing Temperature sensor: NTC-type precision thermistor Automatic Power off Auto shut off after 20 minutes to preserve battery life Operating Temperature 32ºF to 122ºF (0ºC to 50ºC) Storage Temperature 14 to 140ºF (-10 to 60ºC) Operating Humidity Storage Humidity Operating Altitude 2000 meters (7000ft) maximum Battery One 9 volt (NEDA 1604) battery Battery life 80 hours approx. (if the Backlight is used continuously, battery life will be reduced significantly) Battery Current 8.3 mA DC approx. Weight 1.6 lbs. (725g) including battery & probe Dimensions Main instrument: 7.0 x 2.9 x1.2" (178 x 74 x 33mm) Sensor Head: 2.75” (70mm) Diameter Specifications: Air Velocity Range Resolution Accuracy m/s (meters per sec) 0.40-30.00 m/s 0.01m/s ±(3% + 0.20 m/s) km/h (kilometers/hour) 1.4-108.0 km/h 0.1km/h ±(3% + 0.8 km/hr) ft/min (feet per minute) 80–5900 ft/min 1ft/min ±(3% + 40 ft/m) mph (miles per hour) 0.9–67.0 mph 0.1mph ±(3% + 0.4 MPH) knots (nautical MPH) 0.8 to 58.0 knots 0.1knots ±(3% + 0.4 knots) Air Flow Range Resolution Area CMM (cubic meters/min) 0-999900 m3/min 0.001 to 100 0 .000 to 999.9m2 CFM (cubic ft/min) 0-999900 ft3/min 0.001 to 100 0.000 to 999.9ft2 Air Temperature Range Resolution Accuracy 32-122ºF (0-50ºC) 0.1ºF/ºC 4.0ºF (2.0ºC) Air Flow Meter Air Velocity Meter Anemometer CEM CFM CMM DT-619 m/s à¤Ã×èͧÇÑ´ Flow ÅÁ à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ