Lake Shore Model 330 Autotuning Temperature Controller User’s Manual
Introduction 1-1
CHAPTER 1
INTRODUCTION
1.0 GENERAL
Lake Shore Cryotronics, Inc. designed and manufactures the Model 330 Autotuning Temperature Controller in
the United States of America. It is a microprocessor-based instrument with digital control of a variable current
output. Features include:
• Four Primary Sensor Configurations (can be ordered in any combination):
– Silicon Diode Model 330-1X
– Platinum Resistor 100 Ω Model 330-2X
– GaAlAs Diode Model 330-3X
– Thermocouple Model 330-4X
• Thermometry:
– Dual Sensor Inputs
– Isolated current sources allow true 4-wire sensor readings.
– Isolated digital and analog power supplies improve sensor readings and quiet heater output
– Nonvolatile Memory Space store up to 21 sensor calibration curves
– SoftCal™ improves system accuracy with simple one to three point calibrations by user
• Five Tuning Modes:
– Autotuning P
– Autotuning PI
– Autotuning PID
– Manual
– Zone (Ten Temperature Zones)
• Control:
– Control Stability to ±2.5 mK
– Three Term PID Control Loop
– 25 or 50 Watt (Maximum), with 2 lower power ranges in decade steps
– Setpoint Ramping
• Interface:
– 4.5-Digit LED Display for High Visibility
– Dual Display of Sensor Temperature in K, °C, or sensor units in volts, ohms
– Setpoint Display
– Continuous Display of Heater Output in 5% increments of the heater range selected
– IEEE-488 and Serial Interface (RS-232C Electrical Format)
We welcome comments concerning this manual. Although we try to keep it free from errors, some may occur.
When reporting specific problems, describe it briefly and include the applicable paragraph, figure, table, and
page number. Send comments to Lake Shore Cryotronics, Attn: Technical Publications, 575 McCorkle Blvd.,
Westerville, Ohio 43082-8888. This manual is subject to change without notice.
Due to our commitment to continuous product improvement, we may modify the Model 330 software with time.
Some changes result from Customer feedback regarding operation on various cryogenic systems. Please
contact us with any observations or suggestions regarding the use of this controller. Also, please return
warranty card to ensure receipt of software updates.
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