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SPECIFICATIONS：
| Type | CASI-120S |
| Higher sound pressure sensitivity (1Hz) | 0.9mv/Pa, 0.5Pa-15kPa |
| Lower sound pressure sensitivity (1Hz) | 70mv/Pa, 4mPa-200Pa |
| Higher sound pressure range (1Hz) | ≥174dB |
| Total harmonic distortion (THD) | ≤2%@1Hz/10kPa |
| Dynamic range(1Hz) | 4mPa-10kPa (128dB) |
| -3dB bandwidth： | 0.008Hz-60Hz（25000 frequency times）, 0.0033Hz-220Hz（68000 frequency times） |
| Dual output voltage：difference | 1 & 75 times |
| Pressure derivative sensitivity( 1Hz)： | ≤2mV/Pa/s |
| Output voltage range：difference | ±10v（power ±12V）or ±18V（power±24V） |
| Zero air pressure offset： | 0.2‰hPa FS |
| Zero temperature offset： | ≤0.3%/K,FS |
| Zero regression： | auto |
| Output impedance: | 2×150Ω,suggest load>10kΩ，capacitance <100nF，inductive <10mH |
| Long time stability： | <0.2dB，over 0.5h，>1000h/dB（150℃ dry air） |
| Temperature ratio： | 0.1%/k |
| Wet ratio： | <0.1dB，100%RH |
| Seismic sensitivity： | ≤0.1V/(m/s2)@1Hz，35dB SPL ref. 1 m/s2 |
| Magnetic sensitivity： | ≤10dB SPL，50Hz,80A/m |
| Self noise level (1Hz)： | ≤0.1mPa(0.1Hz-50Hz，14dB SPL,-80dB Pa2/Hz ref 1Pa) |
| Self noise voltage(1Hz) | ≤0.023mv(300 times，-110dB/PSD) |
| Signal to noise ratio(1Hz)： | 118dB |
| Operation temperature： | -40℃～+75℃ |
| Storage temperature： | -55℃～+85℃ |
| Working wet： | 99% non condensation |
| Power supply voltage： | ±12V or±24V |
| Reverse power supply Protection: | 40V |
| Operating current： | ≤20mA@±24V |
| Consumption: | ≤0.98W |
| Body size： | height 158mm×diameter Ф148mm |
| Weight： | 4.7kg |
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