RPA-11 is an explosion proof amplifier and is intended for use with acoustic-emission system Ranis-11E, the supply voltage 8 V.Amplifieris mounted inside a sealed aluminum housingt hat provides protection rating at IP65 against dust and moisture.

At the bottom of the housing the strong magnet is mounted over electrical insulator. The isolatoris necessary to isolate the circuit ground from the bodyof the object under test. Magnet provides a clamping force up to14 kg on steel magnetic surfaces.



Gain 24 dB (for 50 Ohm load)
Bandwidth (-3дБ) 8-500 kHz
Input impedance 10 MOhm║20 pF
Output impedance 50 Ohm
Output range 3.4Vpp into 50 Ohm
Noise 2*<3.2uV (shorted input) at 95-300kHz
2*<3,2uV(220 pF at input) at 95-300kHz
Built-in filters 4-th order Bessel LPF and HPF
Slope 24 dB/octave
Power supply 8 VDC, 11* <13ma(no signal)
23* < 26 ma (max. Signal, 50 Ohm load)
Dimensions 63×57×34(with magnet, but without BNC)
Mass 240 g
Operating temperature range - 40°С to +70°С
Input protection Max 1A, 100us

* - typical value