ER 4131VT & ER 4141VT

The Digital Temperature Control Systems

The Digital Temperature Control System, ER 4131VT, makes use of liquid or gaseous nitrogen as coolant. The accessible temperature range is 100 K to 500 K. The base system consists of the following parts:

Quartz Dewar
ER 169DIS Dewar Insert Holder
Digital Temperature and Gas Flow Control Unit
Thermocouple
Transfer Dewar
10 L storage dewar
Nitrogen Evaporator Heater Assembly

With the dewar insert holder, the dewar is mounted to an X-Band waveguide-type cavity. The sample is inserted into the quarz dewar. Sample exchange at any temperature is a standard feature of this system. The digital control unit monitors and controls the temperature measured with the thermocouple close to sample's position. The target temperature is reached and stabilized via PID temperature control (proportional, integral and derivative). The control unit is fully remote controlable via the acquisition software Xepr or WinEPR Acquisition of the ELEXSYS and EMX spectrometer series. A Manual Control Unit (ER 4131-1030) is available for manual control of the heater and the gas flow.

ER 4118CV Dewar

The ER 4118CV series of dewars seamlessly operate with the ER 4131VT digital temperature control systems. They are the choice for nitrogen-based temperature experiments on our Flexline series and Q-Band resonators. The ER 4118CV are available as glass or metall-coated dewar with window.

ER 4141VT-M Metal-Transferline Option

To further enhance the hold time and ease of operation, the ER 4141VT-M is offered. This temperature system includes a large 25 L storage dewar and a metal transfer line.

ER 4141VT-CSP Resonator Upgrade for Operation up to 700 K

Sometimes, 500 K for the standard set-up is not enough and the 1273 K of the ER 4114HT system is too much. Then, the ER 4141VT-CSP Resonator Upgrade Option is the way to go. This option will boost the upper temperature limit of your High-Sensitivity or Super High-Sensitivity Resonator by 200 K to 700 K!