... integrated company. Our products include laser distance meter,infrared thermometer, anemometer, sound level meter, noise meter, vibration meter, ultrasonic thickness gauge, film/coating thickness ... ~8.5KHzmeasuring range30~130, 40~90, 50~100, 60~110, 80~130frequency weightingA(simulative ear)sampling frequencytwice/smicrophone1/2 inch capacitive ...