NH1000 1.0mm Needle Hydrophone,High Sensitivity PVDF,0.1MHz-20MHz

NH1000 1.0mm Needle Hydrophone,High Sensitivity PVDF,0.1MHz-20MHz Details：

NH1000 1.0mm Needle Hydrophone, High Sensitivity PVDF Ultrasonic Hydrophone 0.1MHz-20MHz Product Overview

The NH1000 1.0mm Needle Hydrophone is a high-sensitivity acoustic measuring device with PVDF (Polyvinylidene Fluoride) piezoelectric sensor. It works with submersible preamplifier and DC coupler to form a complete testing system.

Compliant with IEC 62127-3 standard, its frequency range covers 0.1MHz~20MHz, and it is optimized for 0.5MHz~10MHz applications. Featuring 1.0mm diameter sensor element, it can detect ultra-weak acoustic signal as low as 71 Pa. The average sensitivity reaches 850 mV/MPa from 2MHz to 12MHz with tolerance within ±3 dB.

Lightweight (1.64g) and fully submersible, it withstands hydrostatic pressure up to 2m water depth. Ideal for medical ultrasonic calibration, ultrasonic field measurement, laboratory acoustic research and industrial ultrasonic testing.

Product feature:

1.Ultra High Sensitivity
Average sensitivity 850 mV/MPa (2MHz~12MHz), capable of capturing weak signal down to 71 Pa for precise low-level acoustic measurement.

2.Wide & Optimized Frequency Band
Frequency range 0.1MHz~20MHz, specially optimized for 0.5MHz~10MHz to fit mainstream ultrasonic tests.
3.Stable Performance & High Accuracy
Sensitivity tolerance within ±3 dB. Calibrated to IEC 62127-3, standardized measurement uncertainty ensures reliable test results.
4.Durable Material & Wide Adaptability
Premium PVDF sensor. Operating temperature: 5℃~50℃. Fully submersible, water resistant and anti-scaling.
5.Wide Dynamic Range & Easy Installation
Max safe pressure up to 10 MPa, output impedance 50 Ω. Quick setup with matched preamplifier.

Specification

Item	Specification
Model Number	NH1000
Sensor Element Diameter	1.0 mm
Sensor Element Thickness	28 μm
Hydrophone Net Weight	1.64 g
Transduction Method	Piezoelectric Conversion
Sensor Material	Polyvinylidene Fluoride (PVDF)
Mean Sensitivity (2 MHz ~ 12 MHz)	850 mV/MPa
Sensitivity Variation between Units	± 3 dB
Operating Frequency Band	0.1 MHz ~ 20 MHz
Optimized Frequency Range	0.5 MHz ~ 10 MHz
Measurement Uncertainty (0.1 MHz ~ 1 MHz)	9 %
Measurement Uncertainty (1 MHz ~ 8 MHz)	14 %
Measurement Uncertainty (9 MHz ~ 20 MHz)	18 %
Minimum Detectable Acoustic Pressure	71 Pa
Amplifier Saturation Pressure	820 kPa
Maximum Safe Mechanical Pressure	10 MPa
System Output Impedance	50 Ω
Operating / Storage Temperature	5 ℃ ~ 50 ℃
Critical Damage Temperature	Above 60 ℃
Sensitivity Temperature Drift	+0.6 % per ℃ temperature rise
Maximum Withstand Water Depth	2 m
Recommended Calibration Cycle	Full calibration every 12 months, monthly routine check
Execution Standard	IEC 62127-3
Installation Requirement	Needle tip facing directly to acoustic source

Operation Notes:

Installation: Keep the needle tip facing directly towards the acoustic source during operation.
Water Use: Fully submersible for up to 2m water depth. Regular cleaning is required if using tap water; deionized water is recommended.
Medium Restriction: Keep away from concentrated acid, alkali and strong organic solvents to prevent corrosion.
Calibration: Full calibration every 12 months, monthly sensitivity check with reference source.
Temperature Warning: Do not exceed 60℃ (permanent damage). Sensitivity increases by 0.6% per 1℃ rise.

FAQ

What accessories are needed?
It must be used with submersible preamplifier, DC coupler and power supply.
What is the minimum detectable acoustic pressure?
It can detect weak signal down to 71 Pa for high-precision measurement.
What is the maximum working pressure?
Max safe mechanical pressure is 10 MPa. Amplifier nonlinearity occurs above 820 kPa.
Calibration cycle?
Full calibration every 12 months, routine inspection every month.