Lakeshore DRC-93C User Manual

USER’S MANUAL

Model

DRC-93C

Tem peratu re Controller

Obsolete

This manual describes an obsolete Lake Shore product. This manual is a copy from our archives

and may not exactly match your instrument. Lake Shore assumes no responsibility for this manual

matching your exact hardware revision or operational procedures. Lake Shore is not responsible

for any repairs made

to

the instrument based on information from this manual.

Notice:

Lakeshore.

Lake Shore Cryotronics, Inc. 575

McCorkle Blvd.

Westerville, Ohio 43082-8888 USA E-Mail Addresses:

sales@lakeshore.com service@Iakeshore.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 rights of Lake Shore Cryotronics, Inc. in these developments. Methods and apparatus disclosed herein may be subject to existing or applied for. Lake Shore Cryotronics, modifications, or products at any time without notice. Lake Shore shall not be liable consequential damages in connection with furnishing, performance, or use of this material.

Obsolete

or

other contractual support

Manual

or

relationship whatsoever has existed which in any way affects or mitigates proprietary

Inc. reserves the right to add, improve, modify, or withdraw functions, design

for

errors

contained herein or for incidental or

U.S.

March

Patents

1988

SERIAL

MB

DB

I

N

S

T

R U C

MODEL DRC-93C

TEMPERATURE CONTROLLER

T

I

O

N

M

A N U A

NUMBER

SOFTWARE SOFTWARE

L

Input Card Configuration

9210-3

-6 6

9215-15

-150 150

9220-3

-6

-P2

-P3

-R1

93

05

9317C 9318C

8223 RS-232C

Standard 3 volt Configuration

Volt Diode Configuration

Standard

15

Nanofarad Capacitance Input

Nanofarad Configuration

Standard 3 volt Configuration

6

Volt Configuration

100

ohm

platinum conversion module

1000

27

ohm

platinum conversion module

ohm

Rh-Fe conversion module Thermocouple Input Card Ultra-low

(0.3K)

Germanium input Card Germanium/Carbon Glass Input Card No Input Card

Interface

Input

A

Input

Precision Option

8001 8002

B

(s)

8225 8229 9126

Analog Output Interface Scanner Input Option

(0-10

volt) Output Power Option

W6

High Resolution Set Point

This manual applies directly to instruments with Serial Number

COPYRIGHT

17000

1988,

and higher.

Lake Shore Cryotronics, Inc.

Westerville, Ohio U.S.A.

0

WARRANTY

Lake Shore Cryotronics, Inc., the manufacturer, warrants this product to the owner for a period of

12

months from the date of shipment.

During the

warranty period, under authorized return of instruments or component parts to Lake Shore freight prepaid, the company will repair, or at its

be

option replace, any part found to

defective in material or workmanship, without charge to the Owner for parts, service labor or associated customary shipping cost.

Replacement or repaired parts will

be warranted for only the unexpired portion of the original warranty. All products are thoroughly tested and calibrated to published

specifications prior to shipment. Calibration Certifications are offered

for six month periods only.

re-certification service is offered by Lake Shore Cryotronics,

Where such documentation must be updated, a

Inc. at a

reasonable cost.

LIMITATION

OF

WARRANTY

This warranty does not apply to defects resulting from improper or

inadequate maintenance, unauthorized modification or misuse, operation outside of the environmental specifications for any product or part or buyer-supplied software or interfacing.

THIS WARRANTY IS

INCLUDING MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WHICH EXPRESSLY EXCLUDED.

TO

RESPECT

THIS PRODUCT

INCIDENTAL OR CONSEQUENTIAL DAMAGES

IN

LIEU OF

ANY

THE

OWNER AGREES

SHALL

OTHER WARRANTIES, EXPRESSED OR IMPLIED,

THAT

BE

SET

ARE

EXPRESSLY EXCLUDED.

CERTIFICATION

LAKE

FORTH

SHORE'S LIABILITY WITH

IN THIS WARRANTY,

ARE

AND

Lake Shore Cryotronics, Inc. certifies that this product has been

inspected and tested in accordance with its published specifications and that this product met its published specifications at the time of

shipment. The accuracy and calibration of this product at the time of shipment are

traceable to the United States National Bureau of Standards.

COPYRIGHT

3/88

LSCI

TABLE

Model DRC-93C Temperature Controller

OF

CONTENTS

SECTION

1.1

1.2

1.3

1.4

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

INTRODUCTION DESCRIPTION. SPECIFICATIONS

OPTIONS..

SECTION

INTRODUCTION INITIAL INSPECTION

PREPARATION FOR USE

2.3.1

2.3.2

2.3.3

2.3.4

2.3.5

2.3.6

2.3.7 J3

2.3.8

2.3.9

REMOTE SENSOR ID Connector

IEEE-488 INTERFACE Connector OPTIONS.. ENVIRONMENTAL REQUIREMENTS

2.7.1

2.7.2

REPACKAGING FOR SHIPMENT

I

-

GENERAL INFORMATION

........................

.......................

.........................

II

-

INSTALLATION

........................

.....................

Power Requirements Power Cord. Grounding Requirements Bench Use Rack Mounting Sensor Input Connections

Sensor Output Monitors SENSOR ID Switches Heater Power

2.3.9.1

2.3.9.2

.........................

Operating Temperature

Humidity/Altitude

.....................

......................

....................

.....................

MAX

HEATER POWER Limit

Current or Power Output Display

..................

................

...............

..............

..................

...........

.......

.................

................

.................

................

..................

1-1

1-3 1-3

2-1 2-1 2-1 2-1 2-1 2-1

2-2 2-2

2-2 2-3 2-3 2-4

2-4 2-4 2-4 2-5 2-5 2-5 2-5 2 -5 2-5

SECTION

3.1

3.2

3.3

3.4

COPYRIGHT

INTRODUCTION INSTRUMENT CONFIGURATION

3.2.1

3.2.2

3.2.3

3.2.4

CURVE ENTRY..

PRECISION OPTIONS

3.4.1

3.4.2

3.4.3

III - OPERATING INSTRUCTIONS

.........................

...................

Input Card Configurations Single Input Card Dual Input Cards

Old Version Input Cards

...................

....................

........................

.......................

The Model The Model The Model

3/88

LSCI

8000

8001

8002-05

Precision Option Precision Option

Precision option

...............

................

............

...........

3-1 3-1

3-1 3-1 3-1 3-1

3-1 3-2

3-2 3-2 3-2

i

TABLE OF CONTENTS. CONT'D

3.5

3.6

3.7

3.8

CONTROL FUNDAMENTALS CONTROLS AND INDICATORS

FRONT

POWER ON

3.7.1

3.7.2

3.7.3

3.7.2

TEMPERATURE BLOCK

3.8.1

3.8.2

3.8.3 8229

3.8.4

3.8.5

3.8.6

3.8.7

3.8.8

3.8.9

...........................

Power Up Sequence Power-up Status Blue Legend Keys Black Legend Keys

Sample and Control Sensor Inputs

Upper and Lower SENSOR Number

Scanner Input Option

SCAN

The SCAN Dwell Time Upper and Lower Display Units

3.8.6.1

3.8.6.2

Display Resolution

3.8.7.1

Filtering the A and B Inputs Math Functions

Function

Units Select Sensor Units Mode

3.8.6.2.1Voltage

3.8.6.2.2

3.8.6.2.3

Temperature Display Resolution Set

.....................

.......................

.....................

....................

PANEL DESCRIPTION

...................

....................

...................

............

.............

...............

..................

.............

.................

...............

Units Resistance Units Capacitance Units

............

..........

...................

......

..............

3-2 3-2

3-2 3-2 3-3 3-3 3-5

3-5 3-5 3-5 3-6 3-6 3-6 3-6 3-6 3-7 3-7 3-7 3-7 3-7 3-8 3-9 3-9

3.9

ii COPYRIGHT

SENSOR

3.9.1

3.9.2

3.9.3

CURVE

Standard and Precision Option Curves

3.9.1.1

3.9.1.2

3.9.1.3

3.9.1.4

External Scanners Models

3.9.2.1

3.9.2.2

3.9.2.3

Programming Curves from the Front Panel

3.9.3.1

3.9.3.2

3.9.3.3

3.9.3.4

SELECTION

....................

..........

The Precision Option Display of Accessed Curve Number Addition Changing the Curve used by a Sensor

Selection of the The Correlation Table Modifying the Correlation Table from the Front Panel

Accessing Stored Curve Data Entering New Curves Editing Existing Curve Data Summary of Curve Programming from the Front Panel

of

8229

Scanner Option

8085

REMOTE

................

..................

.............

POSITION DATA

.............

..........

..............

..........

.......

........

......

.....

........

3/88

3-10 3-10 3-10 3-10 3-11 3-11 3-11 3-11 3-12

3-12 3-13 3-13 3-14 3-15

3-15

LSCI

TABLE OF CONTENTS, CONT'D

3.10

3.11 HEATER POWER

3.12 LOCAL/REMOTE

3.13 REMOTE SENSOR ID

3.14 HEATER

4-1. IEEE-488 INTERFACE

SET

POINT

3.10.1 SETPOINT

3.11.2 GAIN

3.11.3 RATE.

3.11.4 RESET

3.11.5

AND

..........................

MANUAL

CONTROL

BLOCK

........................

.........................

HEATER POWER

.........................

%

3.11.1 HEATER

3.11.2 The HEATER

3.12.1

3.12.2 REMOTE

SECTION IV - REMOTE OPERATION

LOCAL

CURRENT

........................

POWER

BLOCK

RANGE

......................

.........................

REAR

LIMIT

PANEL DESCRIPTION

.......................

.....................

..................

.................

3-16 3-16 3-16 3-16 3-17 3-17

3-17 3-17 3-17

3-19 3-19 3-19

3-19 3-19

4-1

4.2 GENERAL IEEE SPECIFICATIONS

4.3 INTERFACE CAPABILITIES

4.4 DRC-93C IEEE-488 ADDRESS SWITCH

4.4.1 Terminating Characters (delimiters) 4-3

4.4.2 Talker and/or Listener Configuration 4-3

4.4.3 The IEEE-488 INTERFACE bus address 4-5

4.5 IEEE-488

4.5.1 The Uniline Commands

4.5.2 The Universal Commands

4.5.3 The Addressed Commands

4.5.4 The Unaddress Commands

4.5.5 Device-Dependent Commands

4.5.6 Talker and Listener Status

4.6 PROGRAMMING INSTRUCTIONS

4.6.1 Commands and Requests

4.7 INSTRUMENT SETUP

4.7.1

4.7.2

BUS

COMMANDS

EOI Status

Interface Mode - The MN1 Command

4.7.2.1 Local

....................

-

The ZN1 Command

....................

AND

...................

................

..................

................

AND

REQUESTS 4-7

OPERATION 4-1

...............

..........

4-2 4-3

.........

..........

4-5 4-5

...............

..............

4-5 4-5 4-6

4-6 4-6

4-7 4-7

...........

.............

...........

4

-7

4 -7 4-7

COPYRIGHT 3/88 LSCI

iii

TABLE OF CONTENTS, CONT'D

4.7.2.2 Remote 4-7

4.7.2.3 Local Lockout 4-9

4.7.3 Terminating Characters - The

4.7.4 Clear

4.7.5 The “W2” Data String

4.7.6 The

4.8 SECTION OF QUANTITIES FOR

-

UNITS.

4.8.1

4.8.2 Units for Sample Display

4.8.3 Control Sensor Selection

4.8.4 Sample Sensor Selection

4.8.5 Resolution for The Control and Sample

4.8.6 Selection of Deviation for Control and Sample

4.8.7 Selection

4.8.8 4-12

4.8.9 The A and B ID Information

4.8.10 The

SENSORS.

Units for Control Display and Set Point

The F4CON, F4COFF, F4SON and F4SOFF Commands The F50N, F5OFF and F5CLR Commands

Sensor Curve # Selection - The NC1N1N2N3 Command

........................

“WI”

“WD”

Data String

The FOC1 Command

The F3CN1 and F3SN1 Commands

of

The AC1C2 and BC1C2 Commands Data String

....................

RESOLUTIONS

MATH

Functions

................

TN,

Command

.......

.................

THE

CONTROL

AND

DEVIATION (Table 4-7)

AND

SAMPLE

-

DISPLAYS

...

..............

-

The FlC1 Command

-

The F2CC1N1 Command

-

The F2SC1N1 Command

.....

....

-

........

-

.....

ON.

OFF and CLEAR

-

..........

...

-

........

.................

4-9 4-9

4-11 4-11

4-11 4-11 4-11

4-11 4-12 4-12

4-12 4-12

4.9

4.10

4.11

THE

CONTROL COMMANDS

4.9.1 The Set Point Value

4.9.2 The

4.9.3 Setting the GAIN (Proportional) - The P Command

4.9.4 Setting the RESET (Integral) - The I Command

4.9.5 Setting the

4.9.6 Heater Range

4.9.7

4.9.8 The “W3” Data String

THE

SCANNER

4.10.1

4.10.2 Setting the Dwell Time

4.10.3 Enabling the Scan Function

4.10.4 Holding the Scan Function

4.10.5 The

THE

SERVICE REQUEST. STATUS REGISTER. STATUS REPORTS

AND

THE

4.11.1 The Service Request

4.11.2 The Status Register and Status Reports

“WP”

%

Manual Heater Power - The H Command

SCAN

The YAN1N2N3 and YBON2N3 Commands

WY"

STATUS REGISTER

4.11.2.1 Status Reports

4.11.2.2 Status Report 2

Request Data String

INPUT

Programming Instructions

Data String

Display and Control Data Ready

....................

-

The S Command

.........

.............

RATE

(Derivative) - The D Command

-

The R Command

.............

.................

CARD

...................

.............

-

..........

-

The

YS

Command

-

The

YH

Command

.................

MASK

................

.................

0

and

1

-

The Control Channel Limit

.....

........

.....

......

........

.......

...

....

.

4-12 4-12 4-16 4-16 4-16 4-16 4-16 4-16 4-16

4-16 4-16

4-16 4-17 4-18 4-18

4-18 4-19 4-19

4-19 4-19

iv

COPYRIGHT 3/88 LSCI

TABLE

4.11.2.3 Status Report 3-Display Sensor Channel Change 4-19

4.11.2.4 Status Report 5

4.11.2.5 When operating without the Service Request

4.11.3 The Status Register Mask - The QC1C2 Command

4.11.3.1 Status Register Mask Bits 0 and 1 Display and Control Data Ready Enables

4.11.3.2 Status Register Mask Bit 2

The Control Channel Limit Enable

4.11.3.3 Status Register Mask Bit Display Sensor Channel Change Enable

4.11.3.4 Status Register Mask Bit

Overload/Error Indicator Enable

4.11.3.5 Examples for setting Mask

4.11.3.6 Status Register Mask at Power Up

4.11.3.7 The “WQ” Data String

OF

CONTENTS. CONT'D

-

Overload/Error Indicator

-

......

3

-

5

-

.......

..........

......

............

.

.....

...

....

4-20 4-20

4-20 4-21

4-21 4-21 4-21

4-21 4-23

4-23

4.12 SAVING AND RESTORING EXECUTABLE (INTERNAL)

4.12.1 Requesting a Program Step for Saving - WEN1N2 Command

4.12.2 Transmitting a Program Step to the 93C The EN N2

4.12.3 Examples

4.12.3.1 Program to Request and Store Program

4.12.3.2 Program to Restore Program Step

4.12.3.3 National Instruments GWBASIC and BASICA IBM

4.12.3.4 National Instruments GWBASIC and

4.12.3.5 National Instruments QUICK BASIC IBM

4.12.3.6 National Instruments QUICK BASIC IBM

4.13 COMMAND OPERATIONS

4.14

OUTPUT

4.14.1 The “WS”

4.14.2 The “WO” Data String

DATA STATEMENTS

of

Executable (Internal) Program Steps Step

10 using the HP86B Example Example Example Example

,

“WC” and

Saving and Restoring

......................

C1

#

-C60 Command

1

thru

10 using the HP86B

...........

.............

of

WEN1N2 Request

of

E Command

of

WEN1N2 Request

of

E Command

.............

...................

“WP”

Data Strings

.................

PROGRAMS

.....

-

.....

......

#

1 thru

..........

BASICA

..........

.........

IBM

4-23 4-23

4-23 4-24

4-24 4-25 4-25 4-26 4-26 4-27 4-28 4-28

4-28 4-28

4.15 SAMPLE PROGRAMMING

4.15.1HP86B Keyboard Interactive Program

4.15.2 National Instruments GWBASICA or BASICA IBM Example

4.15.3 National Instruments QUICK BASIC IBM Example

Bus

4.15.4 HP86B

4.16 SENSOR

4.16.1

4.16.2 The XDN1N2 Command

COPYRIGHT 3/88 LSCI

CURVE

The

XDT Comand

Commands Program

PROGRAMMING INSTRUCTIONS

.....................

..........

.....

..............

............

...................

..................

.

4-30 4-30 4-30 4-31 4-31

4-32

4-33

V

TABLE

OF

CONTENTS, CONT'D

4.16.3

4.16.4

4.16.5

4.16.6

4.16.7

SECTION

5.1

5.2

5.3

5.4

5.5

5.6

INTRODUCTION

GENERAL

FUSE REPLACEMENT LINE VOLTAGE SELECTION PERFORMANCE VERIFICATION

5.5.1

5.5.2

CALIBRATION.

5.6.1

5.6.2

5.6.3

5.6.4

The XDA Command The

XCN1N2

The

XEN1N2

The

XKN1N2*

The

XAC1C2=N1N2*

V

-

MAINTENANCE

Command Command

Command

...................

..................

.................

and

XBC1C2=N1N2*

........................

MAINTENANCE..

...................

......................

...................

..................

Performance Verification Connector Performance Verification Procedure

.........................

Input Card Calibration Set Point Voltage Calibration Calibration

Calibration

of

GAIN, RATE and RESET

of

Power Output

................

Commands

......

..........

............

.........

.............

4-36 4-36

4-37 4-37 4-37

5-1 5-1 5-1 5-1 5-2

5-2 5-2

5-2 5-2 5-2 5-3

5-3

5.7

SECTION

6.1

6.2

6.3

6.4

6.5

vi COPYRIGHT

TROUBLESHOOTING.

VI

-

PROGRAMMING

INSTRODUCTION PROGRAM STEPS

PROGRAM

SUMMARY

INTERNAL

6.5.1

6.5.2

6.5.3

6.5.4

6.5.5

6.5.6

6.5.7

6.5.8

STEP FORMAT OF

PROGRAM

Starting the Program Edit Mode

Program Step Selection

Entering the Program Command and REPEAT COUNT or Entering the Setpoint, Gain, Rate and Reset Entering Other Parameters Entering the Timer Value

Entering

Ending or Aborting the Programming Mode

........................

AND

COMMANDS

.......................

INSTRUCTIONS

SIZE

...................

.....................

ENTRY

...................

............

................

RAMP

COUNT

JUMP

..............

VECTOR,

..............

...............

the

Program

Step

into

Memory

........

.......

.....

3/88

5-4

6-1 6-1 6-1 6-1 6-3

6-3 6-3

6-4 6-4

6-4

6-4 6-4 6-4

LSCI

TABLE

OF

CONTENTS, CONT'D

6.6

6.7 CLEARING

6.8

SECTION

APPENDIX

RUNNING

EXAMPLES

6.8.1 Example

6.8.2 Example #2 - Ramp and

6.8.3 Example

6.8.4

Example #4 - Repeat

VII

-

A

-

B

-

C

-

THE

PROGRAM.

ALL

INTERNAL PROGRAM MEMORY

....................

............

..........................

#1

-

#3

ACCESSORIES,

Standard

Sensor

Error

Curve

Code

Ramp and

-

Repeated Setpoint Ramp Up, Soak,

and Ramp

Limit

INPUT

Data

Information

Summary

of

CARDS

Soak

Down

10

..............

with Gain Ramping

Example

Cycles

AND

#3

with a

...........

OPTIONS

.....

6-4

6-5 6-5

6-5

6-6

6-7

6-8

COPYRIGHT

3/88

LSCI vii

LIST

OF

TABLES AND ILLUSTRATIONS

SECTION

Table

SECTION

Table Figure 2-1. Table 2-2. Figure 2-2. Table 2-3. J3 MONITORS Connections. Table 2-4.

SECTION

Figure Table Table

Table

Table 3-4. Correlation Table for Curve Figure

Table 3-6. Pin Assignments for the J5 REMOTE SENSOR ID Connector

1-1.

2-1.

3-1.

3-1. 3-2.

3-3.

3-2.

I

-

GENERAL INFORMATION

Specifications, Model DRC-91C Temperature Controller

II

-

INSTALLATION

Line Voltage Selection

Typical Rack Configuration

INPUT Connections for J1 INPUT A and J2 INPUT Sensor Connections

................

..............

B

..................

...............

REMOTE SENSOR ID Connector Assignments

III

-

OPERATING INSTRUCTIONS

DRC-93C Temperature Controller - Front Panel System Resolution Versus Sensor Sensitivity Standard Curve Information Sensor Curve Table Information Precision Option Table

from REMOTE POSITION DATA DRC-93C Temperature Controller - Rear Panel

..............

-

................

#

..............

........

.....

...

.

3-10

3-13

3-18

3-19

1-4

2-1 2-2

2-2

2-2 2-3 2-4

3-4

3-8

SECTION IV - REMOTE OPERATION

Table 4-1. Interface Functions.

Figure 4-1. IEEE-488 Address Switch for the DRC-93C Table 4-2. Allowable Address Codes for the DRC-93C Table 4-3. IEEE-488 Table 4-4. DRC-93C Command Summary of Instrument Setup Table 4-5. DRC-93C Summary of Output Requests

Table 4-6. DRC-93C Interface Setup Commands and Request Status Table 4-7. DRC-93C Command Summary for Instrument Setup Table 4-7. DRC-93C Request Summary for Instrument Setup Table 4-8. C1 and C2 in A ID and Table 4-9. DRC-93C Command Summary for Setpoint Setup Table 4-10 DRC-93C Command/Request Summary for Control Setup Table 4-11 DRC-93C Command/Request Summary for Scanner Setup

Figure 4-2. 93C Status Register Table 4-12 Commands to Fix the Status Register Mask Table 4-13 93C Command/Request Summary for Status Register Mask Table 4-14 DRC-93C Command/Request Summary for Program Step Table

viii COPYRIGHT

4-15

DRC-93C Output Data Requests

Bus

Commands

.................

.......

................

.....

..........

.....

B

ID, the SENSOR ID's.

.....

......

MASK

and Status Register Format

.......

...

.............

. . .

.

. .

3/88

4-2

4-3 4-4

4-6 4-8 4-9

4-10 4-13 4-14 4-14 4-15 4-17 4-18 4-22 4-22 4-23 4-24 4-29

LSCI

TABLES OF TABLES

AND

ILLUSTRATIONS,

CONT'D

Table Table

SECTION VI - PROGRAMMING INSTRUCTIONS

Table

4-16

4-17

4-18

4-19

6-1. 6-2.

Sensor Sensor

XDN1N2 Conversion

Programmer

PROGRAMMING COMMANDS..

Curve Curve

Sensor

of

Summary.

Commands

Information

Curve

Raw

output

Units

.................

and

Description

Table

Format

Data

...............

Output

for

the

........

Format

..........

XC Command

.....

...

4-34 4-35 4-35

4-38

6-1

6-2

COPYRIGHT

3/88

LSCI

ix

1.1

INTRODUCTION

SECTION

GENERAL INFORMATION

Arsenide

I

(9210-6

or 9220-6) diodes,

platinum or rhodium-iron resistors

The information contained in this

(9220

series), germanium or carbon

operations manual pertains to the glass resistors (9317C, 9318C), or

installation, operation, remote capacitance sensors (9215).

programming, options and acces-

sories for the Lake Shore Cryotro- With or without the 8229 Scanner nics, Inc. Model DRC-93C Tempera- Card, the DRC-93C can be set to ture Controller. This manual also scan automatically with an incontains troubleshooting and dividual dwell time of calibration procedures, schematics, seconds per channel

or

1

to

99

stepped to

component layouts and replaceable any available input and held there.

parts lists. Setting the dwell time to zero

causes a particular channel to be

This section contains general skipped. If all dwell times are

information for the Lake Shore zero, the instrument stays on the Cryotronics, Inc. DRC-93C Tempera- channel selected. ture Controller. Included is an

instrument description, specifica- The DRC-93C gives a direct reading tions, instrument identification, in temperature when used with any option and accessory information. DT-470 Series Temperature Sensor.

All DT-470 Sensors follow the same

1.2

DESCRIPTION

temperature response curve. Four bands of tracking accuracy are

The DRC-93C Temperature Controller available. Refer to DT-470

is a microprocessor based instru- technical data for details.

ment which provides true analog

control. It is capable of scanning Diode sensor voltages are digitized

multiple sensor inputs and display- to a resolution

ing temperature with up to of resolution in K, OC or sensor units (volts,

5

digits with full scale dependent on input

OF

or card configuration. The tempera-

ohms

or

ture display has a resolution

nanofarads) to five digits. capability of

kelvin and

0.001

of

100

0.01

kelvin above

kelvin below

microvolts

100

The DRC-93C can be used with either kelvin.

1

or 2 input cards. When two input

cards are used, these cards can be For greater precision individual different to allow two separate sensor calibrations can be accommotypes of sensors to be used with dated with the

8001

Precision

the controller. Calibration Option which programs

the instrument with calibration

The dual sensor input with the data for a specific Sensor. The

optional

8229

Scanner Conversion algorithm within the instrument Card expand the input capability of interpolates between data points to the DRC-93C to up to

6

input an interpolation accuracy which sensors. Depending on the input exceeds 0.01K over the entire option selected, the DRC-93C temperature range of the Precision

handles silicon

(9210-3

or

9220-3)

option. The

16

bit analog-to-

or the patented Gallium-Aluminum- digital converter is accurate to

COPYRIGHT

3/88

LSCI 1-1

Section

1

Model

DRC-93C

plus or minus the least significant tion accuracy, the software bit, which for the

470

series interpolation accuracy and the

sensor results in an uncertainty of calculation of the resistance

lmK

below 28K and

with a transitional region between the order of

45mK

above

40K

results in an overall accuracy on

10mK.

these two temperatures. Therefore, at temperatures below overall system accuracy, the the instrument accuracy (1lmK) and can

28K,

sum

the These input option cards are easily

of installed by the user; thus, units

be

changed or upgraded to

that of the calibration itself satisfy changing requirements.

(Lake Shore calibrations are typically better than 20mK within The ample memory space provided in this region) is

system accuracy gradually moderates curves to

to a typical value of

40K.

See the Lake Shore

&

30mK. Above

+75mK

28K,

the DRC-93C allows several response

be

stored in the instru-

above ment. Depending on the complexity

IDW

of the curves, up to 25 can be

Temperature Calibration Service programmed into the unit. The brochure for additional discussion active curve is selected either

of calibration accuracy. from the front panel or over the

remote interface.

The Model DRC-93C can also be used

with the

9220

input card which The data for calibrated sensors can

handles both diodes and positive be stored in the instrument as an

temperature coefficient metallic

8001

Precision Option or by the resistors., i.e., platinum or customer via the front panel or rhodium-iron resistors. The DIN remote interfaces. These curves curve is standard within the can contain up to

99

sensor

instrument and is called up temperature data points. With the automatically unless a positive standard precision option format of temperature coefficient precision

31

data points and an

18

character option curve is selected for that information line, up to twenty input. The accuracy of the reading curves can be stored. is dictated by the sensor and its conformity to the DIN curve. The Although data points are stored as tolerance on these devices

is

given a table, the interpolation on the technical data sheet for the algorithm used results in the Lake Shore

PLATINUM

RTD's. The equivalent of a high order

combined accuracy of the instrument Chebychev polynomial calculation in and a calibrated resistor with a the converting of the input

precision option is on the order of voltage (or resistance) to tempera-

40mK

sensor (above inum) option

over the useful range of the ture. This is done by means of a

.

40K

Note that a precision Lake Shore Cryotronics.

is

required for a rhodium-

for the plat- proprietary algorithm developed at

iron to read correctly in tempera- An averaging algorithm can be ture

.

selected to average up to ten temperature readings. This mode

The Model DRC-93C with the 9318C eliminates noise within the system germanium/carbon-glass input card analogous to averaging with a

results in the most accurate system digital voltmeter. This averaging

below

50K

in temperature.

For both

mode can be disabled from the front

sensors, a precision option is panel or over the remote interface required to read in temperature. for a given input if the customer Near

4K,

the overall accuracy of prefers not to average readings.

the system, including the calibra-

1-2

COPYRIGHT

3/88

LSCI

Model

DRC-93C

Section

I

The control set point is also changing the setting. displayed on the front panel and can be set from the front panel. The maximum power can also be The set point automatically takes limited by using the rheostat on

on the units selected for the the rear panel. Power can be control sensor. In the units mode reduced on the the set point can digits with the range of defined by

be

set to five value between

of a factor of ten in power.

MAX

scale to any

and a reduction

the control sensor input card. The standard set point temperature can When greater output power is be set to temperature is converted to an stage can provide equivalent voltage with a resolution of

100

0.1

degree. This required, the optional W60 output

microvolts out of

3

25

ohm

load.

60

watts into a

volts full scale. The optional An IEEE-488 interface is standard High Resolution Set point expands in the DRC-93C. This interface can the set point resolution to degrees

100.

expanded to

100

and

0.001

degrees below front-panel functions. When two

The equivalent voltage is input cards are used, data from

25

microvolts out of

0.01

be

3

both inputs

used to remotely control all

is

available via the volts full scale. This results in interface. a settability of approximately kelvin above

40K

and

0.001

0.01

kelvin

1.3

SPECIFICATIONS

below 28K for the DT-470 series

sensors. Instrument specifications are

listed in Table

1.1.

These The control section of the DRC-93C specifications are the performance provides three-term temperature standards or limits against which control. Proportional

integral

(RATE)

range from

990

to 1 range. The options for the DRC-93C

(RESET)

and derivative

are individually set with a

0.1

to

99

resulting in a

(GAIN),

the instrument is tested.

1.4

OPTIONS

Controller are listed in Section

Heater power output

of

the DRC-93C

VII. Temperature Controller is a maximum of

50

used.

watts when a

A

digital bar graph on the into the DRC-93C. The options are

50

ohm

heater is Three option ports are designed

front panel displays the output as field installable by the user. a percentage of output range

selected. Thus, the user can con- 822x-series options can be factory veniently monitor power applied to installed in the DRC-93C or fieldhis system. which require lower heater power,

To

accommodate systems installed at a later the. The

8223

RS-232C Interface Option the maximum output can be at- operates similar to the IEEE-488 tenuated in four steps of a decade interface. With the display in

each. Three resistance ranges are temperature units, the Model 8225 available; 0-25, 25-35 and

Ohms.

35-50

Analog Output option is available

to provide a linearized analog output of 10mV/K independent of the

The desired range is selected by a display temperature units chosen.

slide switch on the rear panel. If the display

is

in sensor units,

The power must be off for this the output for diodes is lV/V; for

selection, since the transformer output is shorted momentarily by

100 1000

ohm

platinum, 10mV/ohm; for

platinum, lmV/ohm; for

COPYRIGHT

3/88

LSCI 1-3

Section

I

Model

DRC-93C

rhodium-iron, capacitance units, 100mV/nF and channels of sensor input to the

100mv/ohm;

and for Option provides four additional

“A”

10mV/nF. Since the 9317C and 9318C input. The A input is channel A vary over such a large range of with the additional inputs desigresistance, use of the

8225

with nated

1-4

with the selection these two input cads is limited to indicated on the display. 10mV/K. The Model

Table Input characteristics: Resolution: Inputs:

B.

The

1.1.

Two

8229

Sensor Inputs, A and

8229

Specifications,

Scanner

Model

DRC-93C Temperature Controller

Display resolution is

0.001K

(0.0001K

below

100K, 0.01K

10K

above

100K

for 9317C

Scanner Conversion Resistance Sensor Input Card). Option provides for four additional Resolution can be user-limited to channels of Sensor Input. Display sensor can be selected from front considerations apply for

1K,

0.1K

or

0.01K.

Same resolution

°C

and °F. panel or interface, or display can Changes made by front panel keys or be set to scan between sensor over interface. inputs. Dwell the per channel can

0

be set independently from to

99

seconds. Input characteris- Sensor Input Card and Sensor. See

(skip)

tics are a function of Sensor Input

Temperature

Accuracy:

Input Options available.

Dependent on

Option Installed. The DRC-93C can accomodate two input options which allows the

A

input and the B input Sensor Input Card and Sensor.

Temperature Range:

Dependent of

to each be assigned their own input card. This allows concurrent use

Temperature Control:

of different sensor types, dependent on the user's application.

Set Point:

Keypad selection as a

numeric value, as a step change

Sensors:

Ordered Separately. DRC- from prior value, or incrementally

93C will handle all types of via up/down counter. All keypad diodes; germanium, carbon glass, operations can be duplicated with carbon, etc. negative temperature optional interfaces. coefficient resistors; thermistors; platinum, rhodium-iron, etc.

Set Point Resolution:

Selection in

metallic resistors as well as kelvin, Celsius, fahrenheit or

capacitance thermometers with Sensor Units. Temperature to

0.1

proper choice of input option in corresponding units; in Sensor

cards. See the Lake Shore Units, 0.1mV in voltage,

0.01

ohms

Cryotronics, Inc. Sensor catalog but limited to five digits in

for details on the above Sensors. resistance and

of

15

nanofarads

Display Readout:

out of scale) in capacitance. May also be

150

nanofarads for second

0.001

nanofarads out

(0.01

nanofarads

set over the interface.

Display:

Sensor reading in Sensor Units

(Volts,

temperature in

5-digit LED Display

Ohms

or Nanofarads) or on Sensor, its temperature and the

K,

°C, or OF shown resultant Sensor “gain”, i.e.,

of

Typical Controllability:

Dependent

with annunciators. sensitivity. Typically better than

1mK

in a properly designed system

below 30K and 5mK above 30K using a

1-4

COPYRIGHT

3/88

LSCI

Model

DRC-93C

Section

1

Diode

thermistor, due to

sensitivity, may result in controllability approaching

above ture range in certain systems and germanium below

0.1mK

Sensor. But, for example,

200K

over

its

a

narrow

10K

may control to temperature coefficient conf ig-

large Option

0.5mK

tempera-

in another system.

a

diode sensor voltage. For

a

give buffered output of sensor; for

buffer

a

voltage; for

urations

sensor voltage output

Control

(GAIN),

derivative

(0.0

tablished

to

Modes:

integral

(RATE).

99.

of internally

Proportional For

(RESET)

Set

numerically

range) or incremented via

and capacitance value; for

9318C,

es-

Response

front-panel keypad. Continuous than two-digit display of each Manual

available

selected

Manual modes can

rently.

be

Heater

(1A,

ranges can

Mode

via keypad. Auto

All

duplicated

output:

50V)

standard. Five output

allows

heater

0

to

power to

be

used concur- range change to

keypad. operations can accuracy.

thru

be

interfaces.

Up

selected

to

either

front-panel or interface provide approximate

reductions

Optional

of

60

maximum power output. on/off). Allows input of curve

watt

output available.

decade

Rear panel maximum current

for

MAX

scale.

Heater

continuously shows

or power output

range

output

with

Monitor:

heater

as

a

resolution of

BAR

percentage of package.

100%

50

mode.

of Lagrangian curves result in update

be

and

watts

non-Lagrangian calculations.

times

Three

IEEE-488

control of set-point, gain, rate,

reset,

from range. Provides output of display

and

in units chosen, units and

step front panel functions (except power

data

limit

display

internal ramping programs.

Dimensions,

102mm

current 4in. x 13in.) Style

1%.

Power:

Control

Input

remote interfaces)

Sensor:

(selected

Either

Sensor

VAC

from front panel or instrument off),

.

watts.

diode

configurations

-6

is

0.458 9220

(-P2,

-P3,

(-3,-6)

diode

configuration,

times

sensor

Option positive

-R1)

,

buffer

times

9215,

signal

is

proportional to

9317C

monitor not of use.

time

1

second to rated accuracy for

(electronics):

between one and two seconds.

readings on channel change or

Interface:

units and

reach

Allows remote

heater

rated

power

for calibrated sensors and

high x

Net

90-110,

(selected

Weight:

330mm

weight 8kg

105-125,

via

432m

deep (17in.

L,

or

rear

50

panel

or

wide

full-rack

(17

1b.).

210-250

60

Hz,

9220

is

-10.

or

Less

all

x

with

75

General:

Sensor

Voltage

Monitor: For

Option, buffered output of

COPYRIGHT

3/88

LSCI

each

9210

Accessories

Supplied: Mating connector for sensor/monitor connector, instruction manual.

1-5

repackaging instructions.

2.2

INITIAL

INSPECTION

This instrument was electrically, mechanically and functionally in-

spected prior to shipment. It should be free from mechanical damage, and in perfect working

Verify that the AC Line Voltage Selection Wheel (Figure 3-2,Key

located on the rear panel Model DRC-93C is set to the voltage to be used (Table that the proper fuse

is

of

the

AC

2-1)

installed before inserting the power cord and turning on the instrument.

1)

and

Line Voltage (Volts)

COPYRIGHT

100

220

240

3/88

120

Operating Range (Volts)

90-105

108-126 198-231

216-252

Fuse (A)

2

-

SB

2

-

SB

1

-

SB

1

-

SB

LSCI 2-1

Section

II

Model

DRC-93C

2.3.4

Bench

Figure

Use

2-1.

Typical

The DRC-93C is shipped with plastic

“feet” and a tilt stand installed

and is ready for use as a bench

instrument. The front of the instrument may be elevated for convenient operation and viewing by extending the tilt stand.

2.3.5

Rack Mounting

The DRC-93C can be installed in a standard

19

inch instrument rack by using the optional RM-3F or RM-3FH rack mounting kit.

A

typical

RM-

3F-H kit installation is shown in

Figure

2.3.6

The DRC-93C has

2-1.

Sensor

Input

Connections

two

rear panel

5-

pin input connectors for sensors. The lead connection definition for the sensor(s) is given in Table

and

is shown in Figure

Table

for

J1

2-2.

Input

INPUT

A

and

Terminal

A

B

D

E

+

-

+

H

2-2.

Connections

J2

Input

Description Current Out

Current Return Voltage Sense Voltage Sense

Shield

2-2

B

Rack

Configuration

The use of a four lead connectio

arrangement (a) is required for

four lead sensor.

Figure

A

(+I)

E

(+V)

e.g. Germanium, Carbon-

D (-V)

B

(-I)

A

(+I)

E

(+V)

e.g. Platinum, Silicon

D (-V)

B

(-I)

A

(+I)

E

(+V)

e.g. Silicon Diode

D

(-V)

B

(-I)

2-2.

(a)

Sensor

4

Lead Sensor,

4

Lead Hook-up

Connections

Glass, Rhodium-Iron

(b) 2 Lead Sensor,

4

Lead Hook-up

Diode

(c)

2

Lead Sensor

2

Lead Hook-up

S

E

N

S

O

R

S

E

N

S

O

R

S

E

N

S

O

R

The use of a four wire connection

(Figure

2-2a

and b) is highly re-

2

-2

COPYRIGHT

3/88

LSCI

Model

DRC-93C

Section

II

commended for resistive elements to

Table

2-3. J3

MONITORS

Connections avoid introducing IR drops in the voltage sensing pair which trans-

Terminal

Description

lates into a temperature measure-

ment error. An alternate two line wiring method

(Terminals

her,

B

for the

A

and

E

shorted toget-

and D shorted) may be used

DT-470

and

TG-120

series

diodes in less critical applica-

A

B

C

D

E

F

H

Voltage Output (Input

A)

Voltage Output (Input B)

10

mV/K Analog Output Ground for Analog Output Setpoint Output Ground

(A,

B,

Setpoint)

(Optional Shield) tions where lead resistance is small and small readout errors can

be

tolerated (c). Measurement

2.3.9

Heater

Power

errors due to lead resistance for a two lead hook-up can

using; §T

10

microamperes, R is the total sor(s) ground(s) to preclude the

=

IR/[dV/dT] where I is electrically isolated from the sen-

be

calculated The heater output leads should be

lead resistance; dV/dT is the diode possibility of any of the heater sensitivity and §T is the measure- current affecting the sensor input

ment error. For example, R

ohms with dV/dT

=

2.5

=

250

signal. The heater leads should

milli- not

run

coincident with the sensor

volts/kelvin results in a tempera- leads due to the possibility of

ture error of

1

kelvin.

Two

wire capacitive pick-up between the two connections are not recommended for sets of leads. If they are in other sensor types. close proximity, they should be

wound

so

as to cross the sensor

The Lake Shore Cryotronics, Inc. leads at ninety degrees if at all

QUAD-LEAD™

36

Gauge Cryogenic wire possible.

is ideal for connections to the sensor since the four leads are run The heater output is a current together and color-coded. The wire drive and does not have to be

is

Phosphor Bronze with a Formvar fused. The DRC-93C is designed to

insulation and Butryral bonding power a between the

four

leads. Color cod- heater output. If a smaller resis-

50

ohm

heater for maximum

ing is red, green, clear and blue tance is used, the maximum heater on the four leads which makes it power corresponds to the heater extremely easy to determine one resistance, i.e., wire from another. watts.

A

larger heater can also be

10

ohms

yields

10

used. Since the compliance voltage

2-3.7 J3

Buffered voltage outputs for both watts

Sensor

Output

MONITORS

is

50

volts; a

100

ohm

heater will

allow a maximum power output of

[

(50)

2/100].

25

Sensor Input A and B are available

A

on the J3 connector on the back

slide switch on the back panel

panel of the instrument. The volt- sets the available output power

age from the Model

8225

Output Option is present

connector also. The connector pin switch

assignments are given in Table

Analog dependent on the value

on

this heater resistance. This slide

2-3.

must

the instrument turned

only

be changed with

off

since it

of

the

shorts the windings of the output

COPYRIGHT

3/88

LSCI

2-3

Section

II

Model

DRC-93C

transformer between positions. The setting range of the switch

should coincide with the heater resistance to minimize power dissipated within the DRC-93C. Three setting ranges are available:

25,

25-35

An

optional output power stage

(W60) of

and

35

to 50

60

watts is available for

ohms.

10-

the DRC-93C. The W60 is rated at

1.5

volts

A

amperes at approximately

50

(into

ohm,

50

25

ohm

watt

load).

(1/4"

dia.

x

43

1"

long) cartridge heater is available as well as a

dia.

A

x

1”

30

gauge stranded copper lead

25

ohm,

25 watt

(3/8"

long) cartridge heater.

wire (ND-30) is recommended for connecting to the heater.

2.3.9.1

Make sure that the

MAX

HEATER

POWER

MAX

Limit

HEATER POWER

limit potentiometer is turned fully clockwise during the setup of the

instrument available on the

if

desired.

2.3.9.2

so

Current

that full power

MAX

power scale,

or

Power

Output

is

Display The HEATER

read either

%

meter can be set to

%

of output power or

%

of output current. The internal DIP switch setting (switch trols whether the meter reads in

1)

con-

%

current (closed) or % power (open). The DRC-93C is shipped to read in

%

power.

2.4

REMOTE

SENSOR

ID

Connector

The REMOTE SENSOR ID connector, J5, on the rear panel receives POSITION DATA from a Model

8084

or

8085

Sensor Scanner or a Model SW-10A Ten-Sensor Selector Switch. The

REMOTE SENSOR ID Interconnecting

Cable and REMOTE SENSOR ID connector assignments are given in Table

2-4.

Table

2-4.

REMOTE

Connector

SENSOR

Assignments

ID

REMOTE SENSOR ID Connector Pin

10

8

6

4

14

12

Function Bit 0 (BO-LSB)

Bit

1

(B1)

Bit

2

(B2)

Bit

3

(B3)

4

Bit

(B4-MSB)

Digital Ground

The POSITION DATA is the binary

representation of the remote posi-

2-4

tion. Table

gives the POSITION DATA binary combinations and equivalent hexadecimal remote position. The remote position input can be used to select specific sensor curve tables stored in the DRC-93C. The correlation between remote position and sensor curve is

given in Section

2.5

IEEE-488

III.

INTERFACE

Connector

The IEEE-488 Connector on the back

in

of the DRC-93C is

full compli-

ance with the IEEE Standard

488-1978.

The connector has metric

threaded mounting studs, visually

indicated by the color black.

Metric threaded cable lockscrews

(also black) must

an

IEEE-488 interface cable to the

instrument. Model

be

used to secure

8072

IEEE-488 Interconnect Cables (one meter long) are available from Lake

Shore.

2-4

COPYRIGHT

3/88

LSCI

Model

2.6

Options

DRC-93c

2.7

ENVIRONMENTAL

Section

REQUIREMENTS

II

2 . 6.1 8223 Rs-232C

Interface.

WARNING

Provides remote operation of the same parameters as the The

RS-232C

interface option is described in Section manual including connections.

2.6.2 8225

Analog

Output.

analog output proportional to kel-

IEEE-488.

VII

Provides

of this

To

prevent

shock

the instrument

excess

2.7.1

hazards,

moisture.

Operating Temperature

electrical

do

to

not

rain

fire

expose

or

vin temperature f display sensor

(10mV/K)

tance. The

described in Section

manual.

2.6.3 8229

at

<10

ohms

8225

Scanner

output resis- In order to meet and maintain the

Analog Output is specifications in Table

VII

of this

DRC-93C

should be operated at an

1-1,

ambient temperature range of

Input Option.

5°C.

outside the range of

The unit may be operated

15-35°C

the

23°C

with

±

Adds four additional channels to less accuracy. the “A” input. Scans up to six

sensors with programmable dwell times. The described in Section

Section

VII

8229

Scanner Option is

III

and The

of this manual. and no humidity or altitude speci-

2.7. 2

Humidity/Altitude

DRC-93C

is for laboratory use

f ications have been determined for

2.6.4

The

High

Resolution

Set

Point

this unit.

expands the set point resolution to

0.01

kelvin below voltage is expanded volts out of

kelvin above

100K.

3

volts full scale.

100K

and

0.001

The equivalent

to

25

micro-

2.8

REPACKAGING

If

the Model

FOR

DRC-93C

SHIPMENT

appears to be

This results is a setability of operating incorrectly, refer to the

approximately

and

0.001

DT-470

series sensors. there is a fault with the instru-

0.01

kelvin above

kelvin below

28K

40K

for the

Troubleshooting Guide in Section

5.7.

If

the tests indicate that

ment, contact Lake Shore or a fac-

2.6.5 8001

tom programming of specific Sensor

calibration curve

Precision Option.

(s)

at factory. before returning the instrument.

Cus-

tory representative for a returned

Goods

Authorization

(RGA)

number

Provides highest degree of readout

accuracy. when returning an instrument for

service, photocopy and complete the

2.6.6

deliver

approximately

ohm

installed option.

The

W60

60

watts at

Output Option

1.5

43

volts into a

will Service

Form

found at the beginning

amperes at of Appendix A. The form must be

25

filled in to ensure efficient solu-

load. This is a factory tion of the problem. The following

information must be provided before

Lake Shore will attempt any repair.

COPYRIGHT

3/88 LSCI 2-5

Section

1.

Instrument Model and Serial

2.

User

II

‘

s

Name, Company, Address,

#s

and Phone Number

3.

Malfunction Symptoms

4.

Description

5.

Returned

If

the

original carton is avail-

of

Goods

system

Authorization No.

able, repack the instrument in a plastic bag, place it in the carton using original spacers to protect protruding controls. Seal the

carton with strong paper or nylon

tape. Affix shipping labels and

“FRAGILE”

If

the original carton is not

warnings.

available, pack the instrument similar to the above,, procedure,

being careful to use spacers or

suitable packing material on all sides

of

the instrument.

Model

DRC-93C

2-6

COPYRIGHT

3/88

LSCI

3.1

INTRODUCTION

SECTION

OPERATING INSTRUCTIONS

III

e.g., both a diode thermometer and a resistance thermometer can be used

This section contains information on the two inputs. Another possibil-

and instructions concerning the ity with the 9318C and

9220

Options operation of the Model DRC-93C Temp- would be the presence of a GR-200A erature Controller. Included is a Series Germanium Sensor as well as a description of the front and rear

PT-100

Series Platinum Resistance

panel controls and indicators. Sensor. Both inputs are updated

independently, which allows them

both to be displayed or queried

3.2

INSTRUMENT

CONFIGURATION

under

IEEE-488

or RS-232C control.

The addition of an optional 8229

3.2.1

Input

Card

Configurations

Sensor Scanner Card adds capability

4

for

additional inputs to the

A

The Model DRC-93C can be used with channel resulting in up to 5 sensors

either one or two input cards. The of the same type being allowed using input cards available for use with the A input card.

the DRC-93C are summarized in Section

I.

The input cards available

3.2.4

Old

Version

Input

Cards

allow the 93C to be used with almost any type of cryogenic sensor. Input The

8210,

8211 diode input cards can cards can be mixed, allowing two be used in the 93C as well as the different sensor types to be used

8219

series resistance input card.

with the DRC-93C. The installation of these cards is

3.2.2

Single

Input

Card

covered in Section

manual. Note that there are Dip

7-3

of

this

Switch settings on the main board

When only one input card is present which must be set in order for these

within the unit, it occupies the older cards to work properly.

INPUT

CARD

#1

slot of the DRC-93C

mainframe and is connected to the

Sensor

A

input of the controller.

3.3

CURVE

ENTRY

Only one sensor can be used with the controller under these conditions.

3.2.3

Dual

Input

Cards

When two input cards are present in curve entry via the

the unit, the input card that oc- Section cupies the INPUT CARD

routed to the Sensor

#1

slot is

A

input and the The curve is stored in a battery

input card that occupies the INPUT back-up non-volatile

CARD

B

#2

slot is routed to the Sensor which can be read and written an

input. Consequently, both sensors unlimited number

are energized at all times.

The DRC-93C allows the user to enter his

own

front panel

terface. Section

sensor calibration via the

or

over the remote in-

3.9.3

discusses

front panel and

IV

covers entry over the

IEEE-488

or RS-232C interfaces.

RAM

of

times. The num-

(NOVRAM)

ber of data points stored per curve can be between

2

and 97; two being

The second input card allows the the lower limit which defines a

instrument to mix sensor types, straight line.

COPYRIGHT

3/88

3-1

Section

3.4

III

PRECISION OPTIONS

Model

DRC-93C

and with which input the sensor will

be associated if remote operation is

3.4.1

option

The

Model

8000

Precision

used.

3.5

CONTROL

FUNDAMENTALS

There are three types of Precision Options available for the DRC-93C. An application note entitled

The Model generates the data table

8000

Precision Option “Fundamentals for Usage of Cryogenic

from a Lake Temperature Controllers" is included

Shore calibrated sensor. The upper as an appendix in this manual and limit of data points is again 97, should

be

read in detail if you are

with a typical calibration ranging not familiar with cryogenic temperabetween

30

and

40

points, depending ture controllers.

on sensor type and temperature range

for the calibration. The data and

accuracy of the fit is supplied to

3.6

CONTROLS

AND

INDICATORS

the user as a separate document. This information can then be entered Figures

3-1

and

3-2

identify the by the user via the front panel or DRC-93C displays, annunciators, conover the computer interface. trols, and connectors. The iden-

tification of each item is keyed to

3.4.2

option

The

Model

8001

Precision

the appropriate figure.

Lake Shore can also generate custom

FRONT

PANEL

DESCRIPTION

sensor response curves from the individual sensor calibrations as

3.7

POWER

ON

indicated above and store them in the DRC-93C via the

8001

Precision Before connecting AC power to the

Option prior to shipment. The data DRC-93C, make sure the rear panel and accuracy of the fit is then voltage selector is set

to

corre-

supplied to the user in an Appendix spond to the available power line of this manual. voltage. Be certain the correct

fuse is installed in the instrument.

3.4.3 The Model 8002-05

option

The

8002

Precision Option is used Immediately on

when the customer already DRC-93C and wants new sensor cali- follows

Precision

owns

a

3.7.1

runs

Power

Up

Sequence

POWER

ON the DRC-93C

through a power up sequence as

:

bration data stored in the instru-

1.

ment. LSCI stores the calibration data in a PROM chip

and

sends the

programmed chip to the customer. The PROM is then installed in the bar graph turn on to test

Light Test

All

digits, annunciators, and the

the

DRC-93C by the customer. lights. Note that additional calibrations The TEMPERATURE Block indicates

can be added to the instrument at a +8.8.8.8.8. in both the upper, later time by specifying with the

sensor calibration at time of order, CONTROL Block indicates the serial number of the instrument GAIN, RATE, and

lower and setpoint windows. The

RESET

8.8.

windows. The

in the

3

-2

COPYRIGHT

3/88

Model

DRC-93C

Section

III

HEATER

100%.

SENSORS

POWER

Bar Graph indicates (switch

The UPPER and

have

8.

The indicators for dating is enabled (switch 2 on) at

LOWER

2)

controls whether or not

DISPLAY the settings are updated. The up-

the six sets of UNITS for both the the factory prior to shipment. Upper and Lower displays are displayed to the far left of the front panel. The control

(CTRL)

annun-

3.7.3

Blue

Legend

Keys

ciators are between the SENSOR an-

OFF

nunciators. The RANGE from

MAX

annunciators are below the Bar one of the grey keys of the keypad

graph and the

(programming) and

LOCAL,

REMOTE, PROG with Blue Legends (also labelled

INT

(internal

program) to the far right of the described by the blue legend is

to At the beginning of an operation, if

0-

9,

and

.)

is pressed, the function

im-

front panel. mediately displayed or carried out.

These functions are SENSOR, UNITS,

2.

Instrument Name and IEEE Address

CURVE#,

MATH,

RSLTN, FILTER, CONTROL,

MAX, MIN, MAXDEV.

DEV,

Next the unit displays LSCI in the Upper Display, -93C- in the Setpoint The

Display and the IEEE-488 interface address in the Lower Display.

factory set IEEE address of

For a

12

the quantity continuously.

MATH,

be held down

CURVE#,

MAX,

display would indicate Add12. This ample, if the

address can obviously be changed by is pressed, the display will

MIN,

in

RSLTN

RSLTN,

FILTER,

DEV,

and MAXDEV keys must order to observe the

For ex-

(resolution) key

im-

the user and verification of that mediately show the resolution aschange is always given on power-up. signed to the Upper and Lower Dis-

Note that this address is only read plays. When the key is let up,

by the instrument on power-up operation will return to normal

operation with the displays showing

3.

Input Card Configuration temperature, voltage, etc.

The unit then displays the input cards associated with the inputs on the upper and the lower displays.

The CONTROL, SENSOR,

UNITS,

RSLTN, FILTER, DEV, and provide operations that can be

CURVE#,

MATH

keys

changed by the user. The (up)

4.

Normal

Operation and (down) keys are used in con-

junction with these Blue Legend keys

The unit then goes into normal to alter the quantity with the

operation. key referring to the Upper Display

and the key referring to the

3.7.2

Power-up

Status

Lower Displays. In order to change one of these quantities it is neces-

A

provision has been made to store sary to hold the Blue Legend key parameter changes in the DRC-93C down while hitting the (up) key memory (NOVRAM)

.

The sample and or (down) key. The key will control units, as well as the curve change the entry of the Upper disnumbers and scan dwell times can be play and the key will change the stored as power-up settings. When Lower display. enabled, any time the parameter is changed, either in the LOCAL or REMOTE mode, the NOVRAM is updated. The internal DIP switch setting

COPYRIGHT

3/88

3-3

Section

III

Model

DRC-93C

Figure

Upper

1.

and

laver Displays

Sensor reading in temperature four orders of magnitude.

(Kelvin, Celsius, or Fahren- Includes power OFF position.

heit), or sensor units (Voltage, Resistance, Capacitance)

2.

3.

Sensor No.

Annunciators indicating units

of Sensor (K,

Set

Point

4.

CTRL

(control) Arrow

ciator indicating whether the keys. sensor in the Upper or Lower

Display is the control sensor. functions of SENSOR,

5.

Display of Set Point in temper- FILTER, MATH, ature (kelvin, celsius, or (ReSoLuTioN) , DEV (DEViation)

fahrenheit), or sensor units

(voltage, resistance or capaci- (MINinum), and MAXDEV (MAXimum

tance) in the units Control Sensor (as indicated by

CTRL

Arrow). use with keypad

Control Display

6.

7.

8.

9.

GAIN (proportional) display. ciator.

RATE

RESET

HEATER

(derivative) display.

(integral) display.

CURRENT

Bar Graph in percent of full scale.

Figure

3-1-

(A,

b,

F,

or HEATER POWER annunciator.

3-1. DRC-93C

Front Panel

1,

C,

Model

Front

2,

DRC-93C

Panel Description

3,

4).

V,

N). Rate, Reset, Setpoint, and

Annun-

of

the DEViat ion)

Temperature

10.

.

Keyboard

11.

12.

13.

14.

15.

16.

17.

18.

19.

Controller

controller

Full Scale selection of HEATER

CURRENT

or

HEATER

POWER

for

Control Data input keys (Gain,

Manual Heater).

(Up) and

PROG

and

(Programming),

Sign), TIME,

(Down)

and

keys.

(SCAN

POINT

#

Decimal Keypad with Blue Legend

CURVE#,

UNITS,

RSLTN

,

CONTROL,

CLEAR and ENTER functions for

5,

6,

and minus sign. Return-to-LOCAL key with annun-

REMOTE

INT (INTernal Program) Key with POWER ON-OFF switch

7,

MAX

8,

(MAXimum),

0,

1,

2,

9,

decimal point

3, 4,

key with annunciator.

MIN

3

-4

COPYRIGHT

3/88

Model

DRC-93C

Section

III

3.7.4

When one of the Black Legend keys

(GAIN, RATE, RESET, SETPOINT,

Black

Legend

Keys

MANUAL

3.

Units (K, C, F,

4.

A

5

digit display with sign

5.

An

indicator in the upper left

V,

N)

hand corner of the sign to

HEATER, TIME, or POINT#) is pressed signal FILTER ON.

it is not to be held down released immediately. A Control arrow

(CTRL)

to the far

left of the TEMPERATURE block points The quantity described by the key to the Controlling Sensor. will begin to flash indicating that

it can

The keypad

be

changed.

(0-9

and

.)

is then used

to enter the new value. Negative

quantities are preceded by the minus

key. The

ENTER

key completes the operation and inserts the new The choice value. The

CLEAR

key will cancel iated with the Control Sensor or the

The Setpoint Display is discussed in Section

3.8.1

Inputs

3.10

Sample

of

with the CONTROL Block.

and

Control

Sensor

which input is assoc-

the entry and return the instrument Sample Sensor is determined by the

to normal operation.

CONTROL key cated by the

When the (up) and (down) keys If the

CTRL

of

the keypad and indi-

CTRL

annunciator arrow.

Arrow points up then the are used after selecting a Black Upper Display with its associated Legend key the key will increment SENSOR Number and UNITS are the and the key decrement the quanti- Control sensor. The Lower Display

ty. Detailed operation

will be discussed in the sections associated

dealing with the specific Black Similarly, if the Legend functions.

of

these keys is then the Sample Sensor with its

SENSOR

down then the

number and UNITS.

CTRL

Arrow points

Lower Display and its associated SENSOR and UNITS is the Control Sensor and the Upper Display

SUMMARY:

ONLY

POINT

GAIN,

POWER)

KEYS

DESCRIBED

ENTER

TIVE

THE

CONJUNCTION

CHANGE

THE

WHEN

RATE,

IS

WILL

AND

WHEN

KEY

THE

KEYPAD

NUMBERS

A

DISPLAY

RESET,

FLASHING

CARRY

BY

THE

CLEAR

A

KEY

QUANTITY

AND

WITH

QUANTITY

BLUE

(0-9

0-9

OR MANUAL HEATER

OUT

BLUE

ARE

KEY

BEING

AND

.)

AND

DECIMAL

(SETPOINT,

OTHERWISE

THE

FUNCTION

LEGEND.

ONLY

IS

ARE

LEGEND

EFFEC-

FLASHING.

USED

KEYS

REQUESTED.

ARE,

THE

IN

To

is the Sample Sensor.

3.8.2

The selection

the Upper Display is changed

Upper

and

of

Lower

SENSOR

A

or B inputs for

Number

by

holding in the SENSOR key and pres-

sing the (Up) key. The selection of A or B inputs for

the Lower Display is changed by

holding

in the SENSOR key and pres-

sing the (Down) Key.

3.8

TEMPERATURE

The

TEMPERATURE

the Upper Display, Setpoint Display

BLOCK

The

A

input is distinguished by a

uppercase letter

A

in the Sensor

block consists of window and the B input by a lower-

case

b

in the Sensor window.

and the Lower Display. The Upper

and Lower Displays each have While the SENSOR key is held down,

1.

SENSOR Number

2.

(SCAN) indicator in the show the card types being used

the Upper and Lower Displays will

by

upper left hand corner of the the displayed sensor. The GAIN,

SENSOR Number

COPYRIGHT

RATE, and

3/88 3-5

RESET

windows are blank.

Section

III

Model

DRC-93C

They are used to indicate REMOTE and presses the key. Both keys

be

POSITION DATA when an External Scan- can then ner (Models

tached (see Section

8084

or

3.9.2).

8085)

are at- the Upper Display will flash in-

dicating that it can be changed by the keypad

When the

8229

Scanner Conversion the instrument with the ENTER key. Option is not present the display Hitting the toggles between the

A

and

B

input ENTER key will cancel the entry and

released. The dwell in

(0-9)

CLEAR

and entered into

key before the

cards. return the instrument to normal

operation.

3.8.3 8229

Scanner

Input

Option

To change the dwell shown in the

With the addition of the Model

8229

Scanner Input Option, four more that the

inputs are added

to

the A channel ployed.

Lower Display is the same except

SCAN

and keys are em-

input. These additional inputs are

1,

2,

3,

designated

and

SENSOR window. addition to using the keypad

4

in the When the dwell is being changed, in

(0-9)

there are two other methods to mod-

With the scanner conversion option ify the dwell displayed. The first

present, the SENSOR key and (Up) method is to increment the dwell key increments the Upper Display with the key and decrement it

inputs in the sequence etc. Similarly for the Lower Dis- dwell is displayed hitting the

A-1-2-3-4-b-A

with the key. When the desired

ENTER

play with the SENSOR key and key will store that dwell in the in-

(Down)

key. strument and return to normal ope-

ration. The second method in which

The

8229

covered in Section VII.

Scanner Input option is the entry can be changed is by using

the keypad to enter an amount which is to be added or subtracted from

3.8.4

SCAN

Function

the previous value. Hitting the key will add the amount and the

The

SCAN

ment to step between the two inputs two methods can

function allows the instru- key will subtract the amount. The

be

used at will. with a scan rate independently set The ENTER key will enter the final between

each input.

zero automatically skips the channel

only

scanner option is present, inputs

(1-4)

tion

0

(Skip) and

99

seconds for value into the instrument or the

Setting a dwell time to CLEAR key will cancel the operation

when in the SCAN mode. If the

are included in the

and

each has its

SCAN

own

dwell time

func-

at any time.

3.8.6

3.8.6.1Units

Upper

and

Select

Lower

Display

Units

which is set independently.

The units of the Upper Display is

3.8.5

The

SCAN

Dwell

Time

changed by holding down the UNITS

key and pressing the (Up) key The dwell time for the Sensor inputs until the units desired are obtainassociated with the Upper and Lower ed.

Display can be displayed by pressing

the units of the Upper Display cycle

Each time the key is pressed

the key down for more than one clockwise. The units which do not

second. The display will read dt-00 pertain to the input card selected for a dwell time of

it is desired to change the dwell only one of the sensor units

0

seconds. If are automatically skipped, i . e.

,

(V,

shown in the upper display, the user or nF) is possible depending on continues to hold down the SCAN key which sensor input card

is

present

3-6

COPYRIGHT

3/88

Model

DRC-93C

Section

III

within the instrument. Similarly the 9317C, 9318C, and the 9220-P2,the units of the Lower Display are P3, and -R1 configurations as well

changed by holding down the UNITS as the older 8219-P2, the 8219-P3

key and pressing the

(Down)

key. and 8219-R1 cards. The display

range and resolution for the 9317C

For any input card

except

the DRC-93C will read temperature is

the

9215,

is

0.000

to to

9999.9

99999

ohms; the 9318C

ohms.

Note that

regardless of whether a curve is the resistance automatically ranges stored within the instrument which from

corresponds to the temperature sen-

-----

--.---

to

---

--

----

as the resistance increases in

.

-

to

sor being interrogated. For diodes, value. If the input resistance ex-

germanium, carbon glass, and all ceeds the resistance range for the

other negative temperature depen- card, an overload condition is dence sensors; the default curve is present and is indicated by

Curve the DT-500-DRC sensors.

00

which is the D curve for the display.

For a posi-

OL

on

tive temperature dependence tempera- The display ranges and resolutions

ture sensor such as platinum and for the 9220-P2 (and 8219-P2), rhodium-iron, the default curve Curve

03

which is the standard

DIN curve for platinum. This de-

fault will only occur

if

a curve of

is

3750

P3 (and

8219-P3)

8219-R1) are

0.0

to

2999.9

ohms

respectively. Again, if a

and 9220-R1 (and

0.00

and

to

0.000

299.99

to

9220-

ohms,

99.999

opposite temperature dependence has resistance exceeding full scale is been inadvertently selected by the applied to the input,

user. In the case of the

9215

card,

indicated on the display.

OL

is

temperature units are not allowed due to the inability of this sensor

3.8.6.2.3

Capacitance

Units

to hold a calibration upon cycling.

The capacitance mode is allowed for

3.8.6.2

3.8.6.2.1Voltage

The voltage mode is allowed for the farads, respectively.

9210-3 9220-3

as the older version cards. In the voltage mode, the display has a resolution of

livolt with the full scale range dependent on the input card volts for the

the

Sensor

Units

Mode

Units figurations. The display range is

and

8210

-6

configurations and the

-6

configurations, the excess of the configured maximum is

-6

configurations as well indicated by

8210

-3

configurations and range from 1 kelvin to 1 millikelvin

card and 6.5535 volts for (0.1

and

0.1

(2.9999

8211

mil-

8211

the

configured in the -15 or

0.000

3.8.7

9215

Input Card which can be

to

30.000

or

OL

on the display.

Display Resolution

-150

150.00

An

con-

nano-

input in

The Model DRC-93C allows the user to set his display resolution over the

millikelvin

for the 9317C input

card). The temperature is rounded input card). The actual Input Card to the least significant digit of resolution is

0.1

millivolts, respectively. If a Since the temperature display

0.05

millivolts and the resolution range selected.

voltage exceeding full scale is ap- resolution is dependent on both the

plied to the displayed input an sensor units (voltage, resistance or overload condition is present and is capacitance) resolution of the Input

OL

indicated by

on the display. Card as well as the sensor sensitiv-

ity, temperature resolution is grea-

3.8.6.2.2

The Resistance mode

Resistance

Units

is

allowed for summary of “system” resolution,

tly dependent on the sensor. Refer

to

Table 3-1 for a representative

COPYRIGHT

3/88

3

-7

Lakeshore DRC-93C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual