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Lake Shore 218S User Manual

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Revision 2.2 P/N 119-007 03 July 2012
Includes Coverage For:
Model 218S and Model 218E
Lake Shore Cryotronics, Inc.
575 McCorkle Blvd.
Westerville, Ohio 43082-8888 USA
Internet Addresses:
sales@lakeshore.com
service@lakeshore.com
Visit Our Website:
www.lakeshore.com
Fax: (614) 891-1392
Telephone: (614) 891-2243
Methods and apparatus disclosed and described herein have been developed solely on company funds of Lake
Shore Cryotronics, Inc. No government or other contractual support or relationship whatsoever has existed which in
any way affects or mitigates proprietary rights of Lake Shore Cryotronics, Inc. in these developments. Methods and
apparatus disclosed herein may be subject to U.S. Patents existing or applied for. Lake Shore Cryotronics, Inc.
reserves the right to add, improve, modify, or withdraw functions, design modifications, or products at any time
without notice. Lake Shore shall not be liable for errors contained herein or for incidental or consequential damages in
connection with furnishing, performance, or use of this material.
User’s Manual
Model 218
Tem
p
erature Monitor

Table of Contents

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Lake Shore 218S Specifications

General IconGeneral
Control Outputs (Heater)1
Control Outputs (Analog)1
Input Channels8
Sensor Input TypeDiode, RTD, Thermocouple
Computer InterfaceIEEE-488, RS-232
Temperature Stability0.01 K
Sensor TypesDiode, RTD, Thermocouple
Control Outputs1 Heater, 2 Analog
Output TypeAnalog, Heater
Communication InterfaceIEEE-488, RS-232
Power Supply100 to 240 VAC, 50/60 Hz
Dimensions89 mm

Summary

INTRODUCTION

GENERAL

Provides an overview of the Model 218 temperature monitor and its.

MODEL 218 FEATURES

Details the key features of the Model 218, including sensor measurement.

MODEL 218 SPECIFICATIONS

Lists the technical specifications for the Model 218, covering hardware and.

SAFETY

Covers essential safety precautions for operating and handling the Model 218.

SENSOR CONSIDERATIONS

GENERAL

Introduces the importance of selecting the proper sensor for temperature monitoring.

TEMPERATURE SENSOR SELECTION

Discusses factors for choosing temperature sensors, including range and.

CALIBRATED SENSORS

Explains options for calibrated sensors and their benefits for accuracy.

SENSOR INSTALLATION

Provides detailed instructions on sensor installation, covering materials and.

INSTALLATION

GENERAL

Provides general information and procedures for installing the Model 218.

INSPECTION AND UNPACKING

Instructions for inspecting the instrument upon receipt and unpacking.

REPACKAGING FOR SHIPMENT

Procedure for safely repackaging the instrument for return or.

REAR PANEL DEFINITION

Details the connectors and assemblies found on the rear panel of the.

Sensor Inputs

Covers sensor input connectors, pinouts, and wiring for the Model 218.

TERMINAL BLOCK (MODEL 218S ONLY)

Describes the terminal block connections for relays and analog outputs on.

OPERATION

GENERAL

Introduces the chapter covering the Model 218 front panel operations.

DISPLAY SCREEN DESCRIPTION

Explains the layout and functions of the Model 218's LCD display.

KEYPAD DESCRIPTION

Details the functions of each key on the Model 218's front panel keypad.

INPUT TYPE

Describes how to select the sensor type for input groups on the Model.

CURVE SELECT

Explains how to assign a temperature response curve to a sensor input.

MATH

Covers math features like Max/Min, Linear equation, and filtering.

ANALOG OUTPUTS (MODEL 218S ONLY)

Details the configuration and operation of analog voltage outputs on.

ALARMS SETUP AND OPERATION

Explains how to set up and operate high and low alarms for each input.

ALARM RESET

Describes how to reset latched alarms on the Model 218.

RELAY SETUP (MODEL 218S ONLY)

Details how to configure relays for alarm or manual control on the Model.

LOCKING THE KEYPAD

Explains how to use the keypad lock feature to prevent accidental changes.

RESETTING MODEL 218 TO DEFAULTS

Procedure for resetting all Model 218 parameters to factory defaults.

SPECIAL FEATURES

GENERAL

Introduces special features not used during normal operation.

FRONT PANEL CURVE ENTRY

Instructions for entering and managing custom temperature response curves.

SOFTCAL™

Details the SoftCal™ algorithms for inexpensive sensor calibrations.

DATA LOGGING

Information on using the Model 218's internal memory for data logging.

PRINTING

Describes how to connect a printer and print data from the Model 218.

REMOTE OPERATION

GENERAL

Introduces operational instructions for the computer interfaces.

IEEE-488 INTERFACE

Details the IEEE-488 interface capabilities and setup.

SERIAL INTERFACE OVERVIEW

Describes the serial interface, its features, and connection requirements.

Trouble Shooting

Provides guidance for troubleshooting common communication issues.

IEEE-488/SERIAL INTERFACE COMMANDS

Lists and describes commands for controlling the instrument remotely.

ALARM

Commands for configuring and querying input alarm parameters.

ANALOG

Commands for configuring and querying analog output parameters.

SCAL Generate SoftCal™ Curve

Command to generate a SoftCal™ curve from calibration data.

SRDG? Query Sensor Units Reading for a Single Input or all Inputs

Queries sensor units reading for single or all inputs.

SERVICE

GENERAL

Provides general service information and contact details for issues.

GENERAL MAINTENANCE PRECAUTIONS

General safety precautions to observe during maintenance procedures.

ELECTROSTATIC DISCHARGE

Information on preventing damage from electrostatic discharge (ESD).

FUSE DRAWER

Describes the fuse drawer and its role in line voltage selection.

LINE VOLTAGE SELECTION

Procedure for changing the instrument's line voltage selector.

FUSE REPLACEMENT

Instructions for safely replacing line fuses in the instrument.

SENSOR INPUT CONNECTOR AND PINOUT

Details the pinout for the sensor input connectors on the rear panel.

IEEE-488 INTERFACE CONNECTOR (MODEL 218S ONLY)

Describes the IEEE-488 interface connector and its wiring.

SERIAL INTERFACE CABLE AND ADAPTERS

Provides information on serial interface cables and adapters.

TOP OF ENCLOSURE REMOVE AND REPLACE PROCEDURE

Instructions for removing and replacing the top enclosure.

EPROM AND NOVRAM REPLACEMENT

Procedure for replacing the EPROM and NOVRAM ICs.

ERROR MESSAGES

Lists and explains error messages that may appear during operation.

CALIBRATION PROCEDURE

Detailed steps for calibrating sensor inputs and analog outputs.

CALIBRATION SPECIFIC INTERFACE COMMANDS

Lists interface commands used for calibration procedures.

ACCESSORIES

GENERAL

Introduces information on models, options, and accessories.

MODELS

Lists the available Model 218 model numbers and their descriptions.

OPTIONS

Lists available options for the Model 218, such as CalCurve™.

ACCESSORIES

Lists accessories available for the Model 218.

Lake Shore Cryogenic Wire

Details the types of cryogenic wire sold by Lake Shore.

Apiezon® “N” Grease

Describes Apiezon® “N” Grease for cryogenic applications.

Indium Foil

Describes Indium Foil used for sealing in cryogenic applications.

Clamp-On Ferrite Noise Filter

Instructions for adding ferrite noise filters to sensor cables.

RM-1/2 Rack-Mount Kit

Details the kit for mounting a half-rack unit in a 19-inch rack.

RM-2 Kit

Details the kit for mounting two half-rack units in a 19-inch rack.

APPENDIX A

CURVE TABLES

Provides curve tables applicable to the Model 218 Temperature Monitor.

GENERAL

Introduces the appendix containing curve tables for the Model 218.

Standard DT-470 Diode Curve

Table of breakpoints and temperature values for the DT-470 diode.

Other Standard Diode and Platinum Curves

Curve tables for other standard diode and platinum sensors.

Standard DT-670 Diode Curve

Table of breakpoints and temperature values for the DT-670 diode.

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