High Performance Thermoelectric Coolers C4877, C4878 Series

The C4877 series and C4878 series are thermoelectric coolers constructed with enhanced electrostatic and magnetic shielding (C4877 Series). This minimizes the influence of external noise on the photomultiplier tube and thus significantly improves photometric accuracy. These coolers offer user friendly functions such as easy temperature control and pilot lamp blanking. The C4877 series is designed for use with 51 mm (2") or 38 mm (1-1/2") diameter head-on photomultiplier tubes, and the C4878 series for 

FEATUREs
● Thermoelectric cooling using Peltier elements
● About -30 °C cooling temperature (with +20 °C cooling water)
● Evacuated, double-pane window with heater for frost prevention
● Built-in electrostatic and magnetic shielding (C4877 Series)
● Water shut-off protection to guard the Peltier elements
● Stable operation due to a regulated power supply

Thermoelectric Coolers C659 Series

The C659 series is a thermoelectric cooler designed to reduce photomultiplier tube dark current and to enhance the photomultiplier tube lower detection limit. When used with a photomultiplier tube having an Ag-O-Cs photocathode in DC mode, the dark current can be reduced to 1/200 of its normal level at room temperature.

Features
● Thermoelectric cooling using Peltier elements
● Evacuated, double-pane window with heater for frost prevention
● Water shut-off protection to guard Peltier elements
● Built-in magnetic shield