Lakeshore 332 User Manual page 48

Initial Setup and System Checkout Procedure (Continued)
NOTE: For rated accuracy, the instrument should warm up for at least 30 minutes.
10. The default input settings are "Silicon Diodes" on Inputs A and B, with Input A controlling using the
"Curve 01 DT-470." These settings can be verified by pressing the Input Setup key and following
the instructions in Paragraph 4.4.
11. The default control mode is "Manual PID" where the Proportional, Integral, and Derivative (PID)
settings are entered by the user. The default settings are P = 50, I = 20, and D = 0. These settings
can be verified and/or adjusted by pressing the PID/MHP key and following the instructions in
Paragraph 4.8.
12. For an experiment running at liquid nitrogen temperature, a setpoint of 77 K is good for testing
purposes. Press the Setpoint key. Press the "7" key twice, then press the Enter key. Details of
setpoint setting are discussed in Paragraph 4.11.
13. The default setting for the heater is "Off." To turn the heater on, press the Heater Range key. Press
the s or t key until "Low" is displayed. Press the Enter key. Depending on your actual setup, you
may need to apply more current to the heater, which is accomplished by selecting either the "Med"
or "High" range. Details of heater settings are discussed in Paragraph 4.13.
NOTE: If any problems appear, immediately press the Heater Off key. If any error messages are
displayed, refer to Paragraph 8.9 for details.
The Model 332 should now be controlling the temperature in the experimental setup at the setpoint
temperature. Once this initial checkout procedure is successfully completed, the unit is ready for normal
operation. We recommend all users thoroughly read Chapter 4 – Operation before attempting to use
the Model 332 in an actual experiment or application.
3-12
Lake Shore Model 332 Temperature Controller User's Manual
À− 77.35½−Á− 75.35½
 77.000½−−−−0%−Off
À− 77.05½−Á− 75.10½
 77.000½−−−50%−Low
Installation