Features

• 10 Segment Bar graph
• Constant / pulsed time on
• Pre-settable level trip
• Variable AC Mains in
  

The AS Scientific Helium Level Indicator together with the appropriate probe, provides a means of measuring the level of liquid helium in a container. When the probe is immersed in the liquid helium, a voltage is developed across the probe which is inversely proportional to the depth of the liquid. This proportionality is indicated by means of a 10 segment bar graph measured as a percentage level. The AS Scientific Helium Level Probe consists of a very thin superconducting wire housed inside a stainless steel tube. At ambient temperature, the resistance of the wire is high. The Level Indicator provides an approximate current of 100 mA to the probe.

Specification

Mechanical:

• Standard Eurocard housed in KM6-11 module

Electrical:

• Mains Input: Standard - 240 Volts A.C. 50Hz - Nominal - 90 - 260 Volts A.C. 50Hz
• Relay Contact - 250V 5 A
• Probe: Standard - 66 m x 0.08" st.tube - Niomax superconducting wire, resistance 130ohms