Lake Shore Model 218 Temperature Monitor User’s Manual
Introduction
1-1
CHAPTER 1
INTRODUCTION
1.0 GENERAL
The Model 218 is an eight input temperature monitor that can be used with diode or resistive
temperature sensors. The measurement input was designed for the demands of cryogenic temperature
measurement. The monitor’s low noise, high resolution and wide operating range make it ideal for
noncryogenic applications as well.
There are two versions of the Model 218, the Model 218S and Model 218E. Both versions have the
same sensor measurement and display capabilities but include different interfaces.
The
Model 218S
has many interface features intended for system integration and automated data
collection that make it useful for cryogenic and noncryogenic applications. The Model 218S includes
two computer interfaces, IEEE-488 and serial. Data logging memory and printer capability are included
to help automate data collection. Two analog voltage outputs, an alarm feature and eight relays
enhance system integration.
The
Model 218E
is configured to have a lower selling price but maintains the same level of
performance. It includes a serial computer interface, data logging memory and printer capability. The
alarm feature is also present on the Model 218E, but there are no relays. The 218E has all the features
and specifications of the 218S except IEEE-488 interface, analog voltage outputs and relays.
