8 Recommend Battery 2 pieces of 1.5V alkaline battery
9 Performance parameter
9.1 Working frequency of ultrasonic Working frequency of ultrasonic is 3.0MHz, ±10%nominal standard
9.2 Integrated sensitive 200mm distance
from probe,integrated sensitive≥90db
9.3 Display range:50-230bpm(±2bpm)
10 Recommended Coupling Medium
10.1. Stimulation to Skin: No
10.2. Total Germ Quantity: <1000units/g
10.3. Dung Escherichia Coli, Pseudomonas Aeruginosa and Staphylococcus
Aureus: No
10.4. Acoustic Velocity: 1520-1620m/s
10.5. Acoustic Impedance: 1.5-1.7x106Pa.s/m
10.6. Acoustic Attenuation:
<0.05dB/(cm.MHz)
10.7. Viscosity: >15Pa.S
10.8. PH Value: 5.5-8
11 Material Group: I
12 Pollution Degree: II
13 Operating Altitude: <2000m
14 Acoustic output parameters Working frequency 3.0MHz (1)p-42.0KPa (2)Iob:9.09mW/cm2 (3)Ispta:43.82mW/cm2