Flow Measurement Discs-Piezo Ceramic Rings /Discs-Transducers and Sensors-Products-Zhejiang Jiakang Electronics Co., Ltd.

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Ultrasonic Flow Transducers
- Ultrasonic Gas Flow Transducers
- Ultrasonic Liquid Flow Transducers
Piezo Ceramic Rings /Discs
Piezoelectric Actuators
- Piezo Bimorphs
- Piezo Ceramic Sheets
Ultrasonic Humidifier
- Ultrasonic Humidifier Components
Others

Series: Flow Measurement Piezo Disc

Applications：ultrasonic flow measurement

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Detail Introduction

Ultrasonic Element for Flow Measurement

Due to its traits, such as small size, low power consumption. long life, no pressure loss and other characteristics, ultrasonic flow detection sensor is widely used in various types of gases, liquids and other media flow detection. We can provide the ultrasonic element with high sensitivity, good thermal stability, and excellent 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

Electrical Data	Symbol	Main Materials
Electrical Data	Symbol	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
Piezoelectric coupling coefficien	k_p	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
	k_t	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	ε^T₃₃/ ε₀	1100	3200	2200	2800	4500	180	2300	1400	3400	2200	6000	2750	1600	3800
Piezoelectric charge constant	d₃₃×10^-12C/N	280	700	400	480	780	70	430	250	600	430	850	540	320	710
Piezoelectric charge constant	d₃₁×10^-12C/N	-120	-350		-200	-350		-230	-130	-280	-230	-420	-260	-150	-360
Mechanical quality factor	Q_m	100	60	80	500	60	2500	90	1000	80	90	60	80	1000	70
Frequency constant	f_r·d kH_z·cm	230	190	200	220	180		200	230	190	200	180	190	230	190
Frequency constant	f_r·t kH_z·cm	210	200	200				225	200		225			200	200
Temperature characteristics	\| TKf_r\| (-20℃~80℃) ×10^-6 / ℃	100	260	300	120	400	30	150	100	300	100	400	200	100	260
Temperature characteristics	\| TKC^T\| (-20℃~80℃) ×10^-6 / ℃	1500	4500	5000	2500	6000		1800	1500	4000	2000	6000	3000	1500	4000
Curie temperature	T_c	320	220	220	230	180	450	355	340	230	325	140	280	330	210
Dielectric loss	tgδ（%）	1.20	1.80	2.00	0.50	2.60	0.70	2.00	0.30	2.30	2.00	2.60	1.50	0.40	1.80
Dielectric loss	tgδ（400V/mm，%）								1.00					1.00

For fast evaluation, please refer to Texas Instrument evaluation board to match with our transducers or

discs: https://www.ti.com/tool/EVM430-FR6047