Jiakang Flow Measurement Discs
Jiakang Flow Measurement Discs

Jiakang Flow Measurement Discs

JiaKang Flow Measurement DiscsUltrasonic Element to Flow Measurement

Due to its characteristics, such as tiny size and low power usage. The ultrasonic flow detection sensor is used in the flow detection of gases, liquids, and other media due to its long life and lack of pressure loss. We can offer an ultrasonic element with high sensitivity, strong thermal stability, and great output linearity.

Main Parameters

Part Number HTCY
External Diameter φ8~φ50mm
Dielectric Loss tgδ ≤2.0%
Relative Dielectric Constantξ33T/ξ0 2300、2800、3200
Piezoelectric Strain Constant(d33)(C/N) 430×10-12、540×10-12、600×10-12
Resonant Frequency 40kHz～4MHz
Electrode Type A/B/C
Electrode Material silver/gold
Recommended Material P-668, P-678, P-672
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Main Materials

Electrical Data Symbol Main Materials
P-659 P-660 P-663 P-664 P-666 P-667 P-668 P-669 P-672 P-673 P-676 P-678 P-679 P-690
Piezo-electric coupling coefficient kp 0.58 0.70 0.67 0.67 0.78 0.10 0.68 0.62 0.70 0.68 0.7 0.72 0.65 0.74
k31 0.32 0.39 0.38 0.37 0.42 0.39 0.35 0.41 0.39 0.45 0.42 0.38 0.40
k33 0.60 0.73 0.70 0.70 0.78 0.70 0.68 0.72 0.70 0.80 0.72 0.70 0.75
kt 0.42 0.46 0.45 0.45 0.50 0.45 0.46 0.44 0.46 0.46 0.50 0.47 0.46 0.48
Relative dielectric constant εT33 / ε0 1100 3200 2200 2800 4500 180 2300 1400 3400 2200 6000 2750 1600 3800
Piezo-electric charge constant

d33×10-12C/N

 280 700 400 480 780 70 430 250 600 430 850 540 320 710

d31×10-12C/N

 -120 -350 -200 -350 -230 -130 -280 -230 -420 -260 -150 -360
Mechanical quality factor Qm 100 60 80 500 60 2500 90 1000 80 90 60 80 1000 70
Frequency constant

fr·d     kHz·cm

 230 190 200 220 180 200 230 190 200 180 190 230 190

fr·t     kHz·cm

 210 200 200 225 200 225 200 200
Temp charac-teristics

| TKfr | (-20℃~80℃)
×10-6 / ℃

 100 260 300 120 400 30 150 100 300 100 400 200 100 260

| TKCT | (-20℃~80℃)
×10-6 / ℃

 1500 4500 5000 2500 6000 1800 1500 4000 2000 6000 3000 1500 4000