User's Manual CFM/CMM Thermo-Anemometer Model -PMA90
Introduction Keypad Congratulations on your purchase of the Thermo-Anemometer. This 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. t t t Meter Description t t t 1. Meter 2. LCD Display 3. Power On/Off 4. AVG 5. UNIT 6. MAX/MIN 7. NEXT 8. HOLD 9.
Display Layout Operation Connecting the Vane MAX (top of LCD): Max Hold function engaged for the Air Temperature function HOLD (top of LCD): Data Hold function engaged for the Air Temperature function VEL: indicates that meter is in air velocity mode FLOW: indicates that meter is in air flow mode MAX (bottom of LCD): Max Hold for the IR Temperature and RH function HOLD (bottom of LCD): Data Hold for the IR Temperature function and RH function o o C / F: Temperature uni
. Repeat steps 2 - 3 until the desired number of points have been measured. 5. To return to standard velocity measuring mode press and hold AVG button until meter beeps twice. Note: In the standard velocity measuring mode, press the AVG button once to recall the previous average. The average will be cleared when you enter the Averaging Mode again. Air Flow Measurements (CMM / CFM) 1. Turn on the meter using the 2.
Data Hold (Air Velocity/Air Flow) 1. While taking measurements, press the HOLD button to freeze the air velocity/air flow reading. 2. The HOLD indicator will appear in the bottom of the LCD display. 3. Press HOLD again to return to normal operation. 3. Note that AUTO POWER OFF is re-enabled each time the meter is turned on. 4. Also note that AUTO POWER OFF is disabled in CFM/CMM or Average mode. Battery Replacement When appears on the LCD, the 9V battery must be replaced. 1. Disconnect the sensor. 2.
Specifications Air Velocity Battery Current 8.3 mA DC approx. Weight 1.6 lbs. (725g) including battery & probe Range Resolution Accuracy m/s (meters per sec) 0.40 - 30.00 m/s 0.01 m/s ± (3% + 0.20 m/s) km/h (kilometers/hour) 1.4 - 108.0 km/h 0.1 km/h ± (3% + 0.8 km/hr) ft/min (feet per minute) 80 – 5900 ft/min 1 ft/min ± (3% + 40 ft/m) mph (miles per hour) 0.9 – 67.0 mph 0.1 mph ± (3% + 0.4 MPH) Useful Equations and Conversions knots (nautical MPH) 0.8 to 58.0 knots 0.
