Sirius SI23, with laser sighting, delivers high-resolution fixed focus optics with small spot size, digital RS232 or RS485 communication interfaces, analog 4-20 mA output, and very fast (5ms) speed of response. Optical and electronic parts are enclosed in a rugged, stainless steel housing. Sirius SI23, which utilizes a short wavelength spectral response of 2 to 2.6u, is ideal for induction heating, metal heat-treat processes, kilns, vacuum furnaces, research and development applications, welding and composite temperatures above 50°C. It allows for improved repeatability and accuracy because it operates at shorter wavelengths. The high-performance Sirius SI23 is offered with PSCWin software for recording, analysis and adjustment of all pyrometer parameters. Accessories include a water-cooling jacket, air purge, scanning mirror, adjustable mounting bracket and swivel base mount.