The ERM210 from Thorlabs Inc is a Polarization Extinction Ratio Meter that operates at a wavelength of 400 nm - 700 nm. It delivers a maximum input power of 13 dBm and has a peak wavelength of 700 nm. This polarization extinction ratio meter has a PER of up to 40 dB with a resolution 0.1 dB and an accuracy of less than 0.5 dB. It has a polarization angular resolution of 0.1 degrees (display) & 0.01 degrees (USB) and polarization angle accuracy below 0.5 degrees. This polarization extinction ratio meter has a measuring speed of 10 Hz and includes 2.42-inch OLED display for efficient operation.

The ERM210 has a monitor voltage output range of up to 5 V (high-Z) with a conversion factor of 0.1 V/dB and measurement accuracy of ± 10 mV & ± 50 mV. It has a power on warm up time of 15 min and can be controlled via a USB interface. This polarization extinction ratio meter requires an AC supply of 110 V - 220 V and is available in a module 153.2 mm x 85.4 mm x 188.8 mm. It is ideal for pharmaceutical, medical, military, research, and development applications.