Lake Shore Cryogenics

This section contains specific documentation on the Lake Shore Cryogenics instruments that are implemented. If you are interested in an instrument not included, please consider adding the instrument. lakeshore3xx is a general class for Lake Shore temperature controllers of the series 3xx (like 325, 331, 334, 336, 340, 350).

LakeShore Channel Classes

Several Lakeshore instruments are channel based and make use of the Channel Interface. For temperature monitoring and controller instruments the following common Channel Classes are utilized:

class pymeasure.instruments.lakeshore.lakeshore_base.LakeShoreTemperatureChannel(parent, id, **kwargs)

Bases: Channel

Temperature input channel on a lakeshore temperature monitor. Reads the temperature in kelvin, celsius, or sensor units. Also provides a method to block the program until a given stable temperature is reached.

property celcius: Get celsius attribute with celcius (sic) property.

Deprecated since version 0.14.0: Use celsius instead.

property celsius: Any: Get the temperature in celsius from a channel.

property kelvin: Any: Get the temperature in kelvin from a channel.

property sensor: Any: Get the temperature in sensor units from a channel.

wait_for_temperature(target, unit='kelvin', accuracy=0.1, interval=1, timeout=360, should_stop=<function LakeShoreTemperatureChannel.<lambda>>)

Blocks the program, waiting for the temperature to reach the target within the accuracy (%), checking this each interval time in seconds.

Parameters:

target – Target temperature in kelvin, celsius, or sensor units.
unit – ‘kelvin’, ‘celsius’, or ‘sensor’ specifying the unit for queried temperature values. (default: 'kelvin')
accuracy – An acceptable percentage deviation between the target and temperature. (default: 0.1)
interval – Interval time in seconds between queries. (default: 1)
timeout – A timeout in seconds after which an exception is raised (default: 360)
should_stop – A function that returns True if waiting should stop, by default this always returns False (default: <function LakeShoreTemperatureChannel.<lambda> at 0x72939dcd1900>)

class pymeasure.instruments.lakeshore.lakeshore_base.LakeShoreHeaterChannel(parent, id, **kwargs)

Bases: Channel

Heater output channel on a lakeshore temperature controller. Provides properties to query the output power in percent of the max, set the manual output power, heater range, and PID temperature setpoint.

property mout: Any: Control manual heater output in percent.

property output: Any: Get the heater output in percent of the max.

property range: Any: Control heater range, which can take the values: off, low, medium, and high.

property setpoint: Any: Control the setpoint temperature in the preferred units of the control loop sensor.