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Lakeshore 211 User Manual

Temperature monitor serial numbers 21a0000 and subsequent
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Temperature Monitor
Serial Numbers 21A0000 and Subsequent
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.
Rev. 1.6
User's Manual
Model 211
Lake Shore Cryotronics, Inc.
575 McCorkle Boulevard
Westerville, Ohio 43082-8888 USA
E-Mail Addresses:
sales@lakeshore.com
service@lakeshore.com
Visit Our Website:
www.lakeshore.com
Fax: (614) 891-1392
Telephone: (614) 891-2243
P/N 119-043
02 March 2011

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  • Page 1 User’s Manual Model 211 Temperature Monitor Serial Numbers 21A0000 and Subsequent Lake Shore Cryotronics, Inc. 575 McCorkle Boulevard Westerville, Ohio 43082-8888 USA E-Mail 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.
  • Page 2 Lake Shore Model 211 User’s Manual LIMITED WARRANTY STATEMENT – WARRANTY PERIOD: ONE (1) YEAR 1. Lake Shore warrants that this Lake Shore product (the ―Product‖) will be free from defects in materials and workmanship for the Warranty Period specified above (the ―Warranty Period‖). If Lake Shore receives...
  • Page 3 • Do not tightly bundle cables that carry different types of signals. FIRMWARE LIMITATIONS Lake Shore has worked to ensure that the Model 211 firmware is as free of errors as possible, and that the results you obtain from the instrument are accurate and reliable. However, as with any computer-based software, the possibility of errors exists.
  • Page 4 Lake Shore Model 211 User’s Manual This Page Intentionally Left Blank...

  • Page 5: Table Of Contents

    Lake Shore Model 211 User’s Manual TABLE OF CONTENTS Chapter/Paragraph Title Page INTRODUCTION ..............1-1 GENERAL .................. 1-1 DESCRIPTION ................1-1 SPECIFICATIONS ..............1-3 SAFETY SUMMARY ..............1-8 SAFETY SYMBOLS ..............1-9 INSTALLATION ..............2-1 GENERAL .................. 2-1 INSPECTION AND UNPACKING ..........2-1 REAR PANEL DEFINITION .............
  • Page 6 ANALOG OUTPUT SETUP ............3-8 ANALOG OUTPUT TO TEMPERATURE CONVERSION ..3-9 3.10 LOCKING AND UNLOCKING THE KEYPAD ..... 3-10 3.11 RESETTING THE MODEL 211 TO DEFAULT VALUES ..3-10 3.12 CHECKING CODE DATE REVISION ........3-10 3.13 CURVE ENTRY AND STORAGE .......... 3-11 3.13.1 Curve Header Parameters ............
  • Page 7 Appendix B REGULATORY DECLARATIONS ......A-5 B1.0 General ..................A-5 B1.1 Model 211 CE Declaration of Conformity ......... A-6 B1.2 Model 211 RoHS Declaration of Conformity......A-7 B1.3 Power Supply CE Declaration, P/N 109-132 ......A-8 B1.4 Power Supply RoHS Declaration, P/N 109-132 ......A-9 B1.5 CE Declarations for Discontinued Power Supplies ....
  • Page 8 LIST OF ILLUSTRATIONS Figure No. Title Page Figure 1-1. Model 211 Front Panel ............1-1 Figure 2-1. Model 211 Rear Panel ............. 2-2 Figure 2-2. Power Connector ..............2-3 Figure 2-3. Input/Output Connector ............2-4 Figure 2-4. Panel Mounting Details ............2-9 Figure 2-5.

  • Page 9: Introduction

    Alarms, relays, user-configurable analog voltage or current output, and a serial interface are standard features on the Model 211. Backed by the Lake Shore tradition of excellence in cryogenic and precision temperature...

  • Page 10: Table 1-1. Temperature Range Of Typical Lake Shore Sensors

    211 is valuable as a stand-alone monitor and is easily integrated into other systems. Setup and every instrument function can be performed via serial interface or the front panel of the Model 211. High and low alarms can be used in latching mode for error limit detection and in non-latching mode in conjunction with relays to perform simple on-off control functions.

  • Page 11: Specifications

    Lake Shore Model 211 User’s Manual SPECIFICATIONS Thermometry Number of Inputs: 1 Measurement Type: 4-lead differential Excitation: Constant current, 10 µA or 1 mA Isolation: Measurement is not isolated from chassis ground A/D Resolution: 24-bit Input Accuracy: Sensor dependent; refer to Table 1-2 Measurement Resolution: Sensor dependent;...
  • Page 12 Lake Shore Model 211 User’s Manual Interface (Continued) Relays: Number: 2 Contacts: Normally Open (NO), Normally Closed (NC), and Common (C) Contact Rating: 30 VDC at 1 A Settings: manually off, manually on, follows alarms Connector: DB-25 (shares input connector)
  • Page 13 Description 211S Model 211 temperature monitor, single channel 211N Model 211 with no power supply Accessories included with the Model 211 Temperature Monitor 109-132 100-240 V, 6 W power supply (universal input, interchangeable input plugs) G-106-253 Sensor input mating connector (DB-25)

  • Page 14: Table 1-2. Sensor Input Performance Chart

    Lake Shore Model 211 User’s Manual Table 1-2. Sensor Input Performance Chart Sensor Type Silicon Diode GaAlAs Diode Negative Negative Temperature Coefficient volts (V) volts (V) Sensor Units 0 – 2.5 V 0 – 7.5 V Input Range Sensor Excitation 10 µA ±0.01%...
  • Page 15 Lake Shore Model 211 User’s Manual Table 1-2. Sensor Input Performance Chart (Continued)  Platinum RTD  Cernox™ RTD 1000 Platinum RTD  Full Scale Positive Positive Negative    ohms ( ohms ( ohms (   ...

  • Page 16: Safety Summary

    The Model 211 is designed for indoor use only. Improper use of the instrument may pose a hazard to the operator and surrounding area. The power supply included with the Model 211 meets or exceeds the European Union Standard, EN-60950.

  • Page 17: Safety Symbols

    Lake Shore Model 211 User’s Manual SAFETY SYMBOLS Introduction...
  • Page 18 Lake Shore Model 211 User’s Manual This Page Intentionally Left Blank 1-10 Introduction...

  • Page 19: Installation

    Check off each item on the packing list as it is unpacked. Instruments may be shipped as several parts. The items included with the Model 211 are listed as follows. Items Included with Model 211 Temperature Monitor: ...

  • Page 20: Rear Panel Definition

    Paragraph 5.2. REAR PANEL DEFINITION This paragraph describes the connectors on the rear panel of the Model 211. See Figure 2-1. Readers are referred to paragraphs that contain installation instructions and connector pin-outs for each feature. A summary of connector pin-outs is provided in Paragraph 5.5.

  • Page 21: External Power Supply

    Figure 2-2. Power Connector EXTERNAL POWER SUPPLY The Model 211 comes with the universal input power supply, Lake Shore P/N 109-132. It can accept input voltages from 100 to 240 VAC (±10%), 50 to 60 Hz. For input power, it has interchangeable plugs to accommodate power receptacles in different countries.

  • Page 22: Input/Output Connector

    2.6.1 Input/Output Connector Sensors are connected to the Model 211 through the Input/Output connector on the rear panel of the instrument. The Input/Output connector is also used for the analog output and relay connections. Refer to Figure 2-3 for pin descriptions.

  • Page 23: Shielding Sensor Leads

    The Model 211 has the best noise performance when the chassis is tied to earth ground. This connection should be made at only one point so as to avoid ground loops.

  • Page 24: Sensor Polarity

    Lake Shore Model 211 User’s Manual 2.6.5 Sensor Polarity Lake Shore sensors ship with instructions that indicate which sensor leads are which. It is important to follow these instructions for plus and minus leads (polarity) as well as voltage and current when applicable. Diode sensors do not operate in the wrong polarity.

  • Page 25: 2-Lead Sensor Measurement

    Lake Shore Model 211 User’s Manual 2.6.7 2-Lead Sensor Measurement Sometimes a crowded cryogenic system forces users to read sensors in a 2-lead configuration because there are not enough feedthroughs or room for lead wires. If this is the case, plus voltage to plus current and minus voltage to minus current leads are attached at the back of the instrument or at the vacuum feedthrough.

  • Page 26: Analog Output

    Lake Shore Model 211 User’s Manual ANALOG OUTPUT The Analog Output available on the rear panel of the Model 211 can be configured as either a voltage or current output that can be used for monitor and control applications. Its most basic function is a temperature monitor where it puts out a voltage or current that is proportional to temperature.

  • Page 27: Panel Mounting

    PANEL MOUNTING The Model 211 can be easily panel mounted using the panel mount brackets included. The Model 211 fits in a 91 × 44 mm (3.6 × 1.7 in) cutout. To ⁄ panel-mount the instrument, unplug the unit and use a -inch hex wrench to remove the two set screws holding the brackets in place.

  • Page 28: Figure 2-5. 2111 And 2112 Panel Mount Adapters

    Lake Shore Model 211 User’s Manual Figure 2-5. 2111 and 2112 Panel Mount Adapters 2-10 Installation...

  • Page 29: Operation

    Chapter 4. INSTRUMENT POWER The Model 211 is powered on by plugging in the power supply. There is no power switch on the instrument. When the Model 211 is powered on, every segment on the display will illuminate for a few seconds to indicate instrument initialization.

  • Page 30: Led Annunciators And Display Messages

    Lake Shore Model 211 User’s Manual 211_Display.eps Figure 3-1. Model 211 Display LED ANNUNCIATORS AND DISPLAY MESSAGES The display units are indicated using LED annunciators below the right side of the main display. LED Annunciators °C The display units are in degrees Celsius.

  • Page 31: Keypad Definition

    KEYPAD DEFINITION The Model 211 has four keys on the front panel to setup instrument functions. A list of front panel setup operations is shown in the Model 211 Menu Structure located on the inside back cover of this manual.

  • Page 32: Input Setup

    3.5.1 Input Type The Model 211 supports a variety of temperature sensors sold by Lake Shore and other manufactures. An appropriate sensor type must be selected for the input. Refer to Table 3-1 for a list of common sensor types. If a particular sensor is not listed in the Input Type selection, look at Table 3-1 to find a sensor with similar range and excitation.

  • Page 33: Curve Selection

    CalCurve option can be stored as the user curve at the factory or by the customer. The complete list of standard curves built in to the Model 211 is provided in Table 3-2. Curve tables are listed in Appendix A of this manual.

  • Page 34: Display Units Selection

    When the desired unit is highlighted, press the Enter key. ALARM SETUP AND OPERATION The input of the Model 211 has high and low alarm capability. Temperature reading data in kelvin can be compared to the alarm setpoint values. A...

  • Page 35: Relay Setup

    RELAY SETUP There are two relays on the Model 211 numbered 1 and 2. They are most commonly thought of as alarm relays, but they may be manually controlled. The relays are rated for 30 VDC and 1 A. The terminals are in the Input/Output connector on the Model 211 rear panel.

  • Page 36: Analog Output Setup

    Lake Shore Model 211 User’s Manual ANALOG OUTPUT SETUP The Model 211 has a single analog output. It is normally configured to provide an analog signal proportional to temperature to a strip chart recorder or separate data acquisition system. Pins 6 and 18 on the DB-25 Input/Output connector are used for the analog output.

  • Page 37: Analog Output To Temperature Conversion

    Lake Shore Model 211 User’s Manual Analog Output Setup (Continued) Table 3-3. Analog Table 3-4. Analog Output Output Range Scales Scales In Sensor Units Range High Input High Number Output Output Type Output Output 20 K Silicon Diode 10 V...

  • Page 38: 3.10 Locking And Unlocking The Keypad

    Table 3-6. Resetting to default values does not affect the user curve or the calibration data. To reset the Model 211 to default values, press and hold both the s or t keys for 10 seconds. All of the LED digits will illuminate when the memory has been reset.

  • Page 39: 3.13 Curve Entry And Storage

    Standard curves cannot be changed by the user, and reserved locations are not available for user curves. The Model 211 has one user curve location. The user curve can only be entered using the serial interface. Refer to Paragraph 4.2 for the serial interface curve commands.

  • Page 40: Curve Breakpoints

    The breakpoints should be entered with the sensor units value increasing as point number increases. There should not be any breakpoint locations left blank in the middle of a curve. The search routine in the Model 211 interprets a blank breakpoint as the end of the curve.

  • Page 41: Remote Operation

    Paragraph 4.2. SERIAL INTERFACE OVERVIEW The serial interface used in the Model 211 is commonly referred to as an RS-232C interface. RS-232C is a standard of the Electronics Industries Association (EIA) that describes one of the most common interfaces between computers and electronic equipment.

  • Page 42: Hardware Support

    4.1.2 Hardware Support The Model 211 interface hardware supports the following features. Asynchronous timing is used for the individual bit data within a character. This timing requires start and stop bits as part of each character so the transmitter and receiver can resynchronize between each character. Half duplex transmission allows the instrument to be either a transmitter or a receiver of data but not at the same time.

  • Page 43: Character Format

    Lake Shore Model 211 User’s Manual 4.1.3 Character Format A character is the smallest piece of information that can be transmitted by the interface. Each character is 10 bits long and contains data bits, bits for character timing and an error detection bit. The instrument uses 7 bits for data in the ASCII format.

  • Page 44: Message Flow Control

    Lake Shore Model 211 User’s Manual Message Strings (Continued) A command string is issued by the computer and instructs the instrument to perform a function or change a parameter setting. The format is <command mnemonic><space><parameter data><terminators>. Command mnemonics are listed in Paragraph 4.2. Parameters necessary for each one are described in Paragraph 4.2.1.

  • Page 45: Serial Interface Basic Program

    Lake Shore Model 211 User’s Manual Message Flow Control (Continued) NOTE: The serial interface will not function during front panel setup operations. Do not use the front panel during serial communications. Failure to follow these rules may result in inability to establish communication with the instrument or intermittent failures in communication.

  • Page 46: Table 4-2. Serial Interface Program Control Properties

    Lake Shore Model 211 User’s Manual Visual Basic Serial Interface Program Setup (Continued) In the Properties window, use the dropdown list to select between the different controls of the current project. 10. Set the properties of the controls as defined in Table 4-2.
  • Page 47 Lake Shore Model 211 User’s Manual Visual Basic Serial Interface Program Setup (Continued) 12. Add code (provided in Table 4-3). In the Code Editor window, under the Object dropdown list, select (General). Add the statement: Public gSend as Boolean Double Click on cmdSend. Add code segment under Private Sub cmdSend_Click( ) as shown in Table 4-3.

  • Page 48: Table 4-3. Visual Basic Serial Interface Program

    Lake Shore Model 211 User’s Manual Table 4-3. Visual Basic Serial Interface Program Public gSend As Boolean 'Global used for Send button state Private Sub cmdSend_Click() 'Routine to handle Send button press gSend = True 'Set Flag to True End Sub...
  • Page 49 Lake Shore Model 211 User’s Manual Table 4-3. Visual Basic Serial Interface Program (Continued) frmSerial.MSComm1.Output = strCommand & Term ' Send command to instrument If InStr(strCommand, "?") <> 0 Then 'Check to see if query While (ZeroCount < 20) And (strHold <> Chr$(10)) 'Wait for response If frmSerial.MSComm1.InBufferCount = 0 Then...

  • Page 50: Program Operation

    Lake Shore Model 211 User’s Manual 4.1.6.2 Program Operation Once the program is running, try the following commands and observe the response of the instrument. Input from the user is shown in bold and terminators are added by the program. The word [term] indicates the required terminators included with the response.

  • Page 51: Serial Interface Command Summary

    Lake Shore Model 211 User’s Manual Trouble Shooting (Continued) Send only one simple command at a time until communication is established. Be sure to spell commands correctly and use proper syntax. Old Installation No Longer Working Power instrument off then on again to see if it is a soft failure.
  • Page 52 Lake Shore Model 211 User’s Manual Serial Interface Command Summary (Continued) Query.jpg Key: Begins common interface command. Required to identify queries. aa… String of alphanumeric characters. nn… String of number characters that may include a decimal point. [term] Terminator characters.

  • Page 53: Table 4-4. Interface Commands (Alphabetical Listing)

    Lake Shore Model 211 User’s Manual Table 4-4. Interface Commands (Alphabetical Listing) Command Function Page QIDN? Identification Query ..............14 QRST Reset Instrument Command............14 ALARM Input Alarm Parameter Command ..........14 ALARM? Input Alarm Parameter Query ............15 ALMRST Alarm Reset Status Command .............

  • Page 54: Interface Commands (In Alphabetical Order)

    Lake Shore Model 211 User’s Manual 4.2.1 Interface Commands (In Alphabetical Order) *IDN? Identification Query *IDN?[term] Input: Returned: <manufacturer>,<model>,<serial>,<date>[term] Format: aaaa,aaaaaaaa,aaaaaaa,mmddyy <manufacture> Manufacturer ID <model> Instrument model number <serial> Serial number <date> Instrument firmware revision date LSCI,MODEL211,21A0000,022607 Example: *RST Reset Instrument Command...

  • Page 55: Alarm? Input Alarm Parameter Query

    Lake Shore Model 211 User’s Manual ALARM? Input Alarm Parameter Query ALARM?[term] Input: Returned: <off/on>, <high value>, <low value>, <deadband>, <latch enable> [term] Format: n,+nnn.n,+nnn.n,+nn.n,n (Refer to command for description) ALMRST Reset Alarm Status Command ALMRST[term] Input: Remarks: Clears both the high and low status of the alarm, including latching alarm.

  • Page 56: Brigt Display Brightness Command

    Lake Shore Model 211 User’s Manual BRIGT Display Brightness Command BRIGT <bright>[term] Input: Format: <bright> Sets display brightness. Valid entries: 0 – 15, 0 = least bright, 15 = most bright. Default = 8. BRIGT? Display Brightness Query BRIGT?[term] Input: Returned: <bright>[term]...

  • Page 57: Crvhdr? Curve Header Query

    Lake Shore Model 211 User’s Manual Curve Header Command (Continued) CRVHDR 21,DT-470,00011134,2,325.0,1[term] – Example: Configures User Curve 21 with a name of DT-470, serial number of 00011134, data format of volts versus kelvin, upper temperature limit of 325 K, and negative coefficient.

  • Page 58: Dflt Factory Defaults Command

    Lake Shore Model 211 User’s Manual DFLT Factory Defaults Command DFLT 99[term] Input: Remarks: Sets all configuration values to factory defaults and resets the instrument. The "99" is included to prevent accidentally setting the unit to defaults. DISPFLD Displayed Field Command DISPFLD <source>[term]...

  • Page 59: Incrv Input Curve Number Command

    Lake Shore Model 211 User’s Manual INCRV Input Curve Number Command INCRV <curve number>[term] Input: Format: <curve number> Specifies which curve the input uses. If specified curve parameters do not match the input, the curve number defaults to 0. Valid entries: 0 = none, 1 – 20 = standard curves, 21 = user curve.

  • Page 60: Krdg? Kelvin Reading Query

    Lake Shore Model 211 User’s Manual KRDG? kelvin Reading Query KRDG?[term] Input: Returned: <kelvin value>[term] Format: +nnnnnn Remarks: Also see the RDGST? command. LOCK Front Panel Keypad Lock Command LOCK <state>[term] Input: Format: <state> 0 = Unlocked, 1 = Locked Remarks: Locks out all front panel entries.

  • Page 61: Relay Relay Control Parameter Command

    Lake Shore Model 211 User’s Manual RELAY Relay Control Parameter Command RELAY <relay number>, <mode>[term] Input: Format: <relay number> Specifies which relay to configure: 1 = low alarm relay, 2 = high alarm relay. <mode> Specifies relay mode. 0 = Off, 1 = On, 2 = Alarms.
  • Page 62 Lake Shore Model 211 User’s Manual This Page Intentionally Left Blank 4-22 Remote Operation...

  • Page 63: Service

    CHAPTER 5 SERVICE GENERAL This chapter provides basic service information for the Model 211 Temperature Monitor. Customer service of the product is limited to the information presented in this chapter. Factory trained service personnel should be consulted if the instrument requires repair.

  • Page 64: Returning Products To Lake Shore

    Lake Shore Model 211 User’s Manual RETURNING PRODUCTS TO LAKE SHORE If it is necessary to return the Model 211 or accessories for recalibration, repair or replacement, an RGA number must be obtained from a factory representative or from the Lake Shore web site. Do not return a product to Lake Shore without an RGA number.

  • Page 65: Limit Errors

    Lake Shore Model 211 User’s Manual Instrument Hardware Errors (Continued) Err 03 Indicates the instrument has lost its calibration. To continue using the instrument in an uncalibrated state, press the Enter key after the Error 03 message appears. The Error 03 message is not cleared and will be displayed again on power up until the unit is calibrated.

  • Page 66: Connector Definitions

    Lake Shore Model 211 User’s Manual CONNECTOR DEFINITIONS The POWER, INPUT/OUTPUT, and RS-232 (DTE) connectors are defined in Figures 5-1 through 5-3. – Connector Accepts a Barrel Plug 5.5mm OD x 2.1mm ID x 9.9 mm L. Figure 5-1. Power Connector DB-25 P-211-2-3.bmp...

  • Page 67: Figure 5-3. Rs-232 (Dte) Connector

    Lake Shore Model 211 User’s Manual Connector Definitions (Continued) DE-9 Serial Connector.bmp Model 211 Temperature Monitor Typical Computers DE-9P (DTE) DB-25P (DTE) DE-9P (DTE) Description Description Description No Connection TD (out) DCD (in) Receive Data (RD in) RD (in) RD (in)

  • Page 68: Serial Interface Cable Wiring

    Serial Interface Cable Wiring The following are suggested cable wiring diagrams for connecting the Model 211 serial interface to various customer personal computers (PCs). NOTE: Same as null modem cable design except PC CTS is provided from the Model 211 on DTR.

  • Page 69: Calibration Procedure

    211 to compensate for input offset and gain errors. 5.6.2.1 Sensor Input Calibration Setup and Serial Communication Verification Allow the 211 to warm up for at least 1 hour with the input configured  for Silicon diode and a 250 k resistor standard attached to the input.

  • Page 70: Μa Current Source Calibration And 1 Ma Current Source Verification

    To determine the input offset and gain errors when the input is configured for each of the input types and provide offset and gain calibration constants back to the 211. Refer to CALZ and CALG commands in Paragraph 5.6.4. Process Configure the input for the type to be calibrated.

  • Page 71: Table 5-1. Calibration Table For Resistive Ranges

    Select resistor standard for the range being calibrated from Table 5-1 and accurately determine value of the resistor to the tolerance shown. Attach the resistor standard to the 211 sensor input. Be sure to connect the resistor using proper 4-lead connection techniques.

  • Page 72: Analog Output Calibration And Verification

    5.6.3 Analog Output Calibration and Verification The 211 has one analog output which requires calibration. Both the voltage and current modes of the output need to be calibrated separately. Zero offset and gain errors are calibrated out by programming offset and gain constants to the instrument.

  • Page 73: Analog Output Current Mode Calibration

    Analog Output Current Mode Calibration Purpose To determine the analog output current mode offset and gain errors and provide offset and gain calibration constants back to the 211. Process Reset the calibration constants to their default values using the CALZ and CALG commands.
  • Page 74 Lake Shore Model 211 User’s Manual Analog Output Current Mode Calibration (Continued) Read the output voltage with the DMM. Divide this number by the measured resistor value and record this zero output (ZERO) value. Set the analog output to +100% (20 mA).

  • Page 75: Calibration Specific Interface Commands

    Lake Shore Model 211 User’s Manual 5.6.4 Calibration Specific Interface Commands ANALOG Analog Output Parameter Command ANALOG <mode>, <range>[term] Input: Format: n,n <mode> Specifies analog output voltage mode, current mode, voltage calibration mode, or current calibration mode. 0 = Voltage mode...
  • Page 76 Lake Shore Model 211 User’s Manual CALG Gain Calibration Constant Command CALG <input>, <type>, <value>[term] Input: Format: n,n,+n.nnnnn <input> Specifies input or analog output the gain calibration constant will be provided to. Valid entries are 1 for input and 2 for the analog output.
  • Page 77 Lake Shore Model 211 User’s Manual CALSAVE Calibration Save Command CALSAVE[term] Input: Remarks: Finalizes the calibration procedure. This command calculates and stores a checksum of the calibration memory. This checksum is used on power up to determine if the instrument is calibrated properly. If this command is not sent after a calibration, the instrument will display an "Err 03"...
  • Page 78 Lake Shore Model 211 User’s Manual This Page Intentionally Left Blank 5-16 Service...

  • Page 79: Options And Accessories

    Rubber feet G-110-110* 2111 Panel mount adapter for one Model 211 into 105 mm wide × 132 mm high (4.1 × 5.2 in) mounting plate. See Fig. 2-5. 2112 Panel mount adapter for two Model 211s into 105 mm wide × 132 mm high (4.1 ×...

  • Page 80: Wires

    Lake Shore Model 211 User’s Manual WIRES Common cryogenic wire available from Lake Shore. Other wire and installation accessories are also available. Cable Description 9001-005 Quad-Twist™ Cryogenic Wire. Two twisted pairs, phosphor-bronze wire, 36 AWG, 0.127 mm (0.005 in) diameter.

  • Page 81: Appendix Acurve Tables

    Lake Shore Model 211 User’s Manual APPENDIX A CURVE TABLES A1.0 GENERAL The following curve tables are applicable to the Model 211 temperature monitor. Curve 1 DT-470 Silicon Diode ..........Table A-1 Curve 2 DT-670 Silicon Diode ..........Table A-2 Curve 3 CTI Curve C Silicon Diode ..........

  • Page 82: Table A-2. Lake Shore Dt-670 Silicon Diode

    Lake Shore Model 211 User’s Manual Table A-2. Lake Shore DT-670 Silicon Diode Break- Temp. Break- Temp. Break- Temp. Volts Volts Volts point point point 500.0 0.090570 87.0 1.01064 20.2 1.19475 491.0 0.110239 81.0 1.02125 17.10 1.24208 479.5 0.136555 75.0 1.03167...

  • Page 83: Table A-3. Cti Curve C Silicon Diode

    Lake Shore Model 211 User’s Manual Table A-3. CTI Curve C Silicon Diode Breakpoint Temp. (K) Volts 320.0 0.2968 305.0 0.3382 295.0 0.3640 285.0 0.3911 280.0 0.4050 270.0 0.4341 250.0 0.4896 195.0 0.6408 165.0 0.7255 140.0 0.7971 130.0 0.8245 125.0 0.8376...

  • Page 84: Table A-4. Lake Shore Pt-100/-1000 Platinum Rtd Curves

    Lake Shore Model 211 User’s Manual Table A-4. Lake Shore PT-100/-1000 Platinum RTD Curves Break- PT-100 PT-1000 point Temp. (K) Temp. (K) Ohms ( Ohms ( 030.0 3.820 030.0 38.20 032.0 4.235 032.0 42.35 036.0 5.146 036.0 51.46 038.0 5.650 038.0...

  • Page 85: Regulatory Declarations

    Model 211 Temperature Controller beginning with serial number 21A0000 and subsequent as well as its power supply. Paragraphs B1.1 and B1.2 refer to the CE and RoHS declarations respectively for the Model 211 alone. Paragraphs B1.3 and B1.6 refer to the CE and RoHS declarations respectively for the unit’s power supply.

  • Page 86: B1.1 Model 211 Ce Declaration Of Conformity

    Lake Shore Model 211 User’s Manual B1.1 MODEL 211 CE DECLARATION OF CONFORMITY Regulatory Declarations...

  • Page 87: B1.2 Model 211 Rohs Declaration Of Conformity

    RoHS directive. However, in recognition that RoHS compliance is in the best interest of our customers, employees and the environment, Lake Shore has redesigned the Model 211 to eliminate the hazardous substances covered in the RoHS directive.
  • Page 88 Lake Shore Model 211 User’s Manual B1.3 POWER SUPPLY CE DECLARATION, PART NUMBER 109-132 Regulatory Declarations...
  • Page 89 Lake Shore Model 211 User’s Manual B1.4 POWER SUPPLY ROHS DECLARATION, PART NUMBER 109-132 Regulatory Declarations...

  • Page 90: B1.5 Ce Declarations For Discontinued Power Supplies

    Lake Shore Model 211 User’s Manual B1.5 CE DECLARATIONS FOR DISCONTINUED POWER SUPPLIES A-10 Regulatory Declarations...
  • Page 91 Lake Shore Model 211 User’s Manual Regulatory Declarations A-11...

  • Page 92: B1.6 Rohs Declarations For Discontinued Power Supplies

    Lake Shore Model 211 User’s Manual B1.6 ROHS DECLARATIONS FOR DISCONTINUED POWER SUPPLIES A-12 Regulatory Declarations...
  • Page 93 Lake Shore Model 211 User’s Manual Regulatory Declarations A-13...
  • Page 94 Lake Shore Model 211 User’s Manual This Page Intentionally Left Blank A-14 Regulatory Declarations...

  • Page 95: Appendix Cmenu Structure

    Lake Shore Model 211 User’s Manual APPENDIX C MENU STRUCTURE Menu Structure A-13...
  • Page 96 Lake Shore is a technology leader in the development of cryogenic temperature sensors, precision low temperature measurement and control instrumentation, and magnetic measurement and test systems. Since 1968, Lake Shore physicists, material scientists, and engineers have dedicated themselves to the development of tomorrow’s technology today.

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