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The Business of Science
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E
1000 Dual Channel Cryogenic Temperature
Monitor
Overview
Overview
Overview
Overview
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Continuous visual update of two temperature sensors (channels) using backlit LCD display
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Drives two temperature diodes, intended for cryogenic temperature measurement
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Diode temperature curve selection from four pre-defined curves
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Supports one user-defined, programmable diode curve
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Six programmable setpoint relays (three per sensor/channel)
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Two 0 – 10 V analog outputs for temperature monitoring (one per sensor/channel)
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Provides an RS-232 serial port for a PLC or PC digital interface
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Independent control of two outputs
Description
Description
Description
Description
The E1000 Dual Channel Temperature Monitor drives two diode temperature sensors, and provides a visual
display of the temperature on a backlit LCD module. The intended applications of the E1000 include
controlling two separate cryopumps or cryocoolers simultaneously, by using one diode (channel) for each
coldhead. The E1000 also has the unique capability to control the temperature of a water pump to a user
specified temperature from90 to 130K. While in the Water pump mode, the coldhead power will be
stopped when the water pump reaches the selected off temperature and resume pumping when the upper
temperature is reached. The high resolution measurement sensors provide noise rejection to deliver precise,
accurate temperature readings. The diode curves are user selectable from four (4) pre-defined curves
providing support for common diodes. In addition, a user-programmable curve is available for non-
supported diodes. Temperature conversion is provided by a 10
µ
A constant current source using a spline
interpolation (piecewise polynomial).
