丹麥Reson水聽器，TC4014，TC40系列。
丹麥Teledyne Reson TC4013提供1Hz至170kHz的可用頻率范圍，并且相對于其尺寸具有高靈敏度。此外，它在高達高頻的水平和垂直平面上提供均勻的全向靈敏度。這是一款出色的傳感器，可在寬頻范圍內進行聲音測量和校準。它也可以用作全向參考投影儀。
此款水聽器的整體特性使其非常適用于實驗室和工業用途。
丹麥Teledyne Reson水聽器，TC4013提供1Hz至170kHz的可用頻率范圍，并且相對于其尺寸具有高靈敏度。此外，它在高達高頻的水平和垂直平面上提供了均勻的全向靈敏度。TC4013是一款在寬頻率范圍內進行聲音測量和校準的優秀傳感器。它也可以用作全向參考投影儀。
TC4013的整體特性使其非常適用于實驗室和工業用途。
NBR是指丁腈橡膠。NBR橡膠首先耐海水和淡水，但也耐油。它對汽油的耐受性有限，對大多數酸的耐受性也有限，并且會被堿、強酸、鹵代烴（三氯乙烯）、硝基烴（硝基苯、苯胺）、磷酸酯液壓油、酮類（MEK、丙酮）、區域和汽車制動液所破壞。電纜長度：標準長度6m。可根據要求提供可選電纜長度
The TC4013 offers a usable frequency range of 1Hz to 170kHz and a high sensitivity relative to its size. It furthermore provides uniform omnidirectional sensitivities in both horizontal and vertical planes up to high frequencies. The TC4013 is an excellent transducer for making absolute sound measurements and calibrations within a broad frequency range. It can also be applied as an omnidirectional reference projector.
The overall characteristics make TC4013 extremely applicable for laboratory as well as industrial uses.
NBR NBR means Nitrile Rubber The NBR rubber is first of all resistant to sea and fresh water but also resistant to oil. It is limited resistant to petrol, limited resistant to most acids and will be destroyed by base, strong acids, halogenated hydrocarbons (carbon tetrachloride, trichlo roethylene), nitro hydrocarbons (nitrobenzene, aniline), phos phate ester hydraulic fluids, Ketones (MEK, acetone), Ozone and automotive brake fluid. Cable length: Standard length 6m. Optional cable lengths available on request
TECHNICAL SPECIFICATIONS：
Usable frequency range: 1Hz to 170kHz
Receiving sensitivity: -211dB ±3dB re 1V/µPa
Transmitting sensitivity: 130dB ±3dB re 1µPa/V at 1m at 100kHz
Horizontal directivity pattern: Omnidirectional ±2dB at 100kHz
Vertical directivity pattern: 270° ±3dB at 100kHz
Nominal capacitance: 3.4nF Operating depth: 700m
Survival depth: 1000m
Operating temperature range: -2°C to +80°C
Storage temperature range: -40°C to +80°C
Weight (in air): 75g Encapsulating material: Special formulated
