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Features include:
- CE-Marked.
- Simultaneous display of LHe and LN2 levels (with 2-channel option).
- Separate control output for each channel.
- Flexible computer control via the standard RS-232 interface (IEEE-488.2 available).
- LabVIEW® drivers available at no extra charge.
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The LM-500 Liquid Cryogen Level Monitor is a compact instrument featuring all commonly requested functions controlled via the front-panel keypad. The simple keypad features keys with good tactile response (no membrane switches). Computer control is also easily managed via the standard RS-232 interface or an optional IEEE-488.2 interface.
The easy to read 2-line vacuum fluorescent display clearly indicates liquid cryogen level and all menu choices. The display represents the latest technology and features a wide viewing angle, high brightness, and long life.
The 2-channel option offers great flexibility. Following are configuration choices for the 2-channel option:
- Both channels monitor separate liquid helium sensors
- Both channels monitor separate capacitance-based sensors (LN2, LNG, etc)
- One channel monitors a single liquid helium sensor and the second channel monitors a single capacitance-based sensor.
Other options include analog output (either 0-1 volt or 4-20 mA), IEEE-488.2 interface, and rack mountable cabinet. LabVIEW® drivers are available at no additional charge. Click here to download LabVIEW® drivers for the LM-500.
Other Cryomagnetics' instruments include the Model TM-600 Cryogenic Temperature Monitor and the Model GM-700 Hall Effect Gaussmeter.
Standard Features
| Bright two line vacuum fluorescent display |
RS-232 interface |
| Sample and hold operation (1min to 99hrs) |
Manual update or continuous operation |
| Sensor de-ice Cycle (LHe only) |
LHe sensor filament burnout protection |
| Sensor calibration via front panel menu |
Can drive sensors up to 200cm active |
| Control output with high and low setpoints (Open collector output standard, TTL output available by changing a jumper on the circuit board) |
Level indication in centimeters, inches, or percent |
| Audible alarm |
Adjustable constant current source |
Optional Features
| Option 001: Analog Output |
| Option 002: IEEE-488.2 Interface |
| Option 003: Two Sensor Readout with separate High and Low controller setpoints. Configurable to monitor either two each LHe or capacitance-based liquid level sensors, or one of each. |
| Option 004: 19" Rack Mountable Cabinet. Up to (3) LM-500's or any combination of Model LM-500's, Model TM-600's, or Model GM-700's can be mounted side-by-side in one 3.5" high rack. |
| Option 005: Line Voltage Controller Output |
Check out our liquid helium level sensors and capacitance-based liquid level sensors
Please click on the following
links for more information:
