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Lake Shore Model 332 Temperature Controller User’s Manual

Control Setup (Continued)

The control setpoint can be displayed and set in temperature or sensor units. Changing setpoint units
does not change operation of the controller, only the way the setpoint is displayed and entered. A valid
curve must be assigned to the control input to use temperature units. To change setpoint units press
the

Control Setup

key and press

Enter

until the following display appears.

Select for Loop 1 °®
SP Units Temp K

Use the

s

or

t

key to cycle through the following setpoint units: Temp K, Temp C, and Sensor, where

K = kelvin, C = degrees Celsius, and Sensor = volts (V) or ohms (

Ω

). Press the

Enter

key.

The Model 332 has two control modes, Closed loop and Open Loop. Closed-loop control, often called
feedback control, is described in Paragraph 2.6 of this manual. During closed-loop control operation the
Control Input, Setpoint, Heater Range, PID and Manual Heater Power (MHP) output parameters are
active. Open-loop control mode allows the user to directly set the heater output for Loop 1, control
output for Loop 2 with the MHP Output parameter. During Open-loop control only the heater range and
MHP Output parameters are active. To change Control Mode press the

Control Setup

key and press

Enter

until the following display appears.

Select for Loop 1 °®
Control Mode Closed

The Power Up setting refers to how the control output will respond after the instrument is powered
down. Power Up Enable means the controller will power up with the control output in the same state it
was before power was turned off. Power Up Disable means the controller will always power up with the
heater off no matter how it was set when power was turned off. To change the Power Up parameter
press the Control Setup key and press Enter until the following display appears.

Select for Loop 1 °®
Power Up Disable

Use the

s

or

t

key to toggle between Power Up Enable or Disable. Press the

Enter

key.

The Model 332 will display the heater output as either percent of full scale current or percent of full
scale power for the heater range selected for Loop 1. For Loop 2 the control output is always reported
in percent of full scale voltage and this parameter will not appear in the Control Setup menu. This
parameter affects the heater output display and the scale of the Manual Heater Power (MHP) output
parameter for Loop 1. The MHP Output scale is always the same as the control output display. To
change control output units press the

Control Setup

key and press

Enter

until the following display

appears.

Select for Loop 1 °®
Heater Out Power

Use the

s

or

t

key to toggle between Heater Out Power or Current. Press the

Enter

key.

4-16

Operation

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Содержание 332

Страница 1: ...d 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 w...

Страница 2: ...iability for incidental or consequential damages so the above limitation may not apply to you LIMITED WARRANTY STATEMENT Continued 9 EXCEPT TO THE EXTENT ALLOWED BY APPLICABLE LAW THE TERMS OF THIS LI...

Страница 3: ...USA hereby declare that the equipment specified conforms to the following Directives and Standards Application of Council Directives 73 23 EEC 89 336 EEC Standards to which Conformity is declared EN61...

Страница 4: ...and interface cables attached If the installation and operating instructions in the User s Manual are followed there should be no degradation in EMC performance This instrument is not intended for us...

Страница 5: ...s 2 5 2 3 2 Sensor Location 2 5 2 3 3 Thermal Conductivity 2 5 2 3 4 Contact Area 2 5 2 3 5 Contact Pressure 2 6 2 3 6 Lead Wire 2 6 2 3 7 Lead Soldering 2 7 2 3 8 Heat Sinking Leads 2 7 2 3 9 Thermal...

Страница 6: ...7 1 Loop 1 Output 3 8 3 7 2 Loop 1 Heater Output Connector 3 8 3 7 3 Loop 1 Heater Output Wiring 3 8 3 7 4 Loop 1 Heater Output Noise 3 9 3 7 5 Loop 2 Output 3 9 3 7 6 Loop 2 Output Resistance 3 9 3 7...

Страница 7: ...S 4 29 4 15 1 Alarms 4 29 4 15 2 Relays 4 31 4 16 ANALOG OUTPUT 4 32 4 16 1 Analog Output In Input Mode 4 32 4 16 2 Analog Output In Manual Mode 4 34 4 16 3 Analog Output In Loop 2 Mode 4 35 4 17 LOCK...

Страница 8: ...rial Interface Example Programs 6 17 6 2 7 1 Visual Basic Serial Interface Program Setup 6 17 6 2 7 2 Quick Basic Serial Interface Program Setup 6 20 6 2 7 3 Program Operation 6 21 6 2 8 Troubleshooti...

Страница 9: ...3 2 3 2 Line Input Assembly 3 3 3 3 Diode Resistor Input Connector 3 4 3 4 Thermocouple Input Definition and Common Connector Polarities 3 7 3 5 RELAYS and ANALOG OUTPUT Terminal Block 3 10 4 1 Model...

Страница 10: ...rial Interface Specifications 6 15 6 5 Serial Interface Program Control Properties 6 18 6 6 Visual Basic Serial Interface Program 6 19 6 7 Quick Basic Serial Interface Program 6 20 6 8 Command Summary...

Страница 11: ...s Thermocouples z Five Tuning Modes Autotuning P Autotuning PI Autotuning PID Manual Zone 10 Temperature Zones z Two Temperature Control Loops Loop 1 50 W Output Loop 2 10 W Output z Bright Large Char...

Страница 12: ...user curves can be loaded into non volatile memory via computer interface or the instrument front panel A built in SoftCal algorithm can also be used to generate curves for silicon diodes and platinu...

Страница 13: ...the tuning process Interface Most functions on the instrument front panel can also be performed via computer interface The Model 332 is equipped with a parallel IEEE 488 interface as well as a serial...

Страница 14: ...t reproducibility they are useful as a thermometry standard They follow a standard curve above 70 K and are interchangeable in many applications but are not useful at cryogenic temperatures below 20 K...

Страница 15: ...K 1 25 mV K at 77 K 2 85 mV K at 300 K 3 15 mV K at 475 K 0 19 K at 30 K 0 42 K at 77 K 0 39 K at 300 K 0 36 K at 800 K 80 K at 4 2 K 4 K at 20 K 1 06 K at 40 K Measurement Resolution Sensor Units Te...

Страница 16: ...see Table 1 3 10 K at 2 K 4 10 K at 4 2 K 3 1 2 mK at 77 K 2 2 3 mK at 300 K 1 Auto Range see Table 1 3 10 K at 1 4 K 3 20 K at 4 2 K 2 3 6 mK at 77 K 2 4 5 mK at 300 K 1 Electronic Accuracy Sensor Un...

Страница 17: ...at 4 2 K 10 mK at 300 K 11 mK at 1500 K Electronic Accuracy Sensor Units Temperature Equivalents 1 V 0 05 of reading 288 mK at 4 2 K 58 mK at 300 K 1 V 0 05 of reading 4 6 K at 4 2 K 38 mK at 300 K 72...

Страница 18: ...of Inputs 2 Input Configuration Each input is factory configured as either Diode RTD or Thermocouple Diode RTD Thermocouple Measurement Type Four lead differential with current reversal Two lead room...

Страница 19: ...Power 50 10 Heater Noise 1 kHz RMS 50 V 0 017 of output voltage 0 3 mV Isolation Optical isolation between output and other circuits None Heater Connector Dual banana Detachable terminal block Loop 1...

Страница 20: ...ts Linear Equation Settings Input Source Top of scale Bottom of scale or manual Range 10 V Resolution 0 3 mV Accuracy 2 5 mV Maximum Output Power 1 W jumper selected Minimum Load Resistance 100 short...

Страница 21: ...phases of instrument operation service and repair Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and inten...

Страница 22: ...not remove instrument covers Refer component replacement and internal adjustments to qualified maintenance personnel Do not replace components with power cable connected To avoid injuries always disc...

Страница 23: ...her too high or too low Manufacturer recommendations should always be followed Sensor sensitivity is also dependent on temperature and can limit the useful range of a sensor It is important not to spe...

Страница 24: ...rces Install the sensor properly following guidelines in Paragraph 2 3 Have the sensor and instrument periodically recalibrated or in some other way null the time dependent errors Use a sensor calibra...

Страница 25: ...d a temperature response curve Refer to Paragraph 2 2 4 The Model 332 can also perform a SoftCal calibration The user must provide one two or three known temperature reference points The range and acc...

Страница 26: ...aded in it Users download CalCurve breakpoint pairs in ACSII format from a floppy disk Users install a NOVRAM with CalCurve breakpoint pairs loaded in it To increase accuracy perform a SoftCal with th...

Страница 27: ...nsor in an already crowded cryostat is never easy There are less problems if the entire load and sample holder are at the same temperature Unfortunately this not the case in many systems Temperature g...

Страница 28: ...e must be added to the sensor for proper heat sinking and connecting to a bulk head connector at the vacuum boundary The lead wire must be a good electrical conductor but should not be a good thermal...

Страница 29: ...e so some cooling power must be directed to the shield to keep it near the load temperature If the cooling system does not include an integrated radiation shield or one cannot be easily made one alter...

Страница 30: ...r the sensor leads should be included so that any heat leaking in does not warm the load when the heater is not running The lead wires should be twisted to minimize noise coupling between the heater a...

Страница 31: ...ontrol loop the controller must be retuned As an example a thermal mass acts differently at different temperatures The specific heat of the load material is a major factor in thermal mass and the spec...

Страница 32: ...of the integral setting In the Model 332 the integral term is not set in seconds like some other systems The integral setting can be derived by dividing 1000 by the integral seconds Isetting 1000 Ise...

Страница 33: ...Lake Shore Model 332 Temperature Controller User s Manual P 331 2 3 bmp Figure 2 3 Examples of PID Control Cooling System Design 2 11...

Страница 34: ...e heater ranges for good control over their full temperature Lower heater ranges are normally needed for lower temperature The Model 332 is of no use controlling at or below the temperature reached wh...

Страница 35: ...e the temperature act differently than changes that lower the temperature If it was not possible to measure the oscillation period of the load during proportional setting start with an integral settin...

Страница 36: ...e a problem System nonlinearity is a problem for both AutoTune and manual tuning It is most commonly noticed when controlling near the maximum or minimum temperature of a temperature control system It...

Страница 37: ...sor s accessories and manual were received Please use the packing list and the spaces provided to check off each item as the instrument is unpacked Inspect for damage Be sure to inventory all componen...

Страница 38: ...any rear panel connections This is especially critical when making sensor to instrument connections 60V MAX 60V MAX 120 RS 232 DTE 100 120V 220 240V 1 6 A T 250V 0 75 A T 250V 100 120 220 240 V 10 6 V...

Страница 39: ...The line fuse is an important safety feature of the Model 332 If a fuse ever fails it is important to replace it with the value and type indicated on the rear panel for the line voltage setting The l...

Страница 40: ...in 3 of the connectors The Model 330 provides a constant 1 mA sensor excitation current on Pin 3 and 10 A current on Pin 5 The Model 340 provides both 1 mA and 10 A excitation current on Pin 5 and con...

Страница 41: ...connector is in contact with the chassis so the cable shield should never touch the outer shell of the connector 3 5 4 Sensor Polarity Lake Shore sensors are shipped with instructions that indicate wh...

Страница 42: ...7 K the sensitivity of a silicon diode is lower so the error would be close to 50 mK Again this may not be a problem for every user 3 5 7 Lowering Measurement Noise Good instrument hardware setup tech...

Страница 43: ...D Type T Copper vs Copper Nickel Copper BLU Constantan RED Chromel AuFe 0 03 Chromel Gold Chromel AuFe 0 07 Chromel Gold Figure 3 4 Thermocouple Input Definition and Common Connector Polarities 3 6 2...

Страница 44: ...nd LO terminals The ground terminal is reserved for shielding the heater leads when necessary HEATER OUTPUT HEATER OUTPUT HI HI LO LO 60V MAX 3 7 3 Loop 1 Heater Output Wiring Heater output current is...

Страница 45: ...all It is not recommended because the additional load on instrument power supplies causes noise on internal circuits The second control loop has fewer features than the first including software protec...

Страница 46: ...de the instrument It is not recommended to attach the analog output ground to a ground outside the instrument The output should be read by an instrument with an isolated or differential input wherever...

Страница 47: ...8 3 3 Ensure the power switch is in the off O position CAUTION The sensor must be connected to the rear of the unit before applying power to the Temperature Controller Damage to the sensor may occur...

Страница 48: ...oses Press the Setpoint key Press the 7 key twice then press the Enter key Details of setpoint setting are discussed in Paragraph 4 11 77 35 75 35 77 000 0 Off 13 The default setting for the heater is...

Страница 49: ...aragraphs See Figure 4 1 AutoTune Allows selection of closed loop tuning mode AutoTune PID PI P Manual PID or Zone for the currently selected loop Refer to Paragraph 4 9 Loop Toggles the front panel d...

Страница 50: ...the readings Refer to Paragraphs 4 1 4 4 1 5 and 4 3 Press and hold to set display brightness Refer to Paragraph 4 18 Math Allows the user to configure the math features Max Min linear equation and fi...

Страница 51: ...soon as the key is pressed e g Loop Heater Off and Remote Local Setting Selection Allows the user to select from a list of values During a selection sequence the s or t key are used to select a param...

Страница 52: ...in C Celsius Sensor V mV or Input A Input B None No Display Input Reading Source Same choices as Display Location 1 Same choices as Display Location 1 Same choices as Display Location 1 Setpoint Units...

Страница 53: ...SPLAY FORMAT AND SOURCE UNITS SELECTION In the normal display the display is divided into four user configurable areas that can provide temperature readings setpoint display and heater status Figure 4...

Страница 54: ...e process is the same for the other three display locations However additional choices are provided for Display Location 3 and 4 being Setpoint and Heater Out respectively In the following example we...

Страница 55: ...sitive NTC RTD 75mV 75 75 1 mA Negative Temperature Coefficient NTC RTD 75 mV Max log K Negative Cernox High Temperature Cernox Carbon Glass Germanium Rox and Thermox NTC RTD 75mV 750 750 100 A NTC RT...

Страница 56: ...A Type Platinum Use the s or t key to cycle through the sensor types shown in Table 4 1 until Platinum is displayed Press the Enter key Select for InputA Platinum 100 250 Use the s or t key to cycle t...

Страница 57: ...oss a piece of voltage lead Thermal EMF voltages must exist because the sensor is almost never the same temperature as the instrument They can be minimized by careful wiring making sure the voltage le...

Страница 58: ...the Enter key Proceed to Paragraph 4 4 4 1 to select a room temperature compensation or press the Escape key to return to the normal display 4 4 4 1 Room Temperature Compensation Room temperature com...

Страница 59: ...procedure was performed Yes Perform the room temperature calibration procedure that follows Calibration Procedure 1 Attach a thermocouple sensor or direct short across the input terminals of the therm...

Страница 60: ...type selected Refer to Table 4 1 NOTE The sensor reading of the instrument can always be displayed in sensor units If a temperature response curve is selected for an input its readings may also be dis...

Страница 61: ...any appropriate User Curves stored in Curve Numbers 21 thru 41 Data points for resistor curves are detailed in Tables D 4 thru D 6 in Appendix D Press the Input Setup key Press the Enter key until yo...

Страница 62: ...in a fully integrated package Loop 2 Loop 2 the auxiliary control loop shares most of the operational features of loop 1 but uses the 10 W analog voltage output as its control output By itself loop 2...

Страница 63: ...ed loop control and must be set to zero if not wanted Heater range must also be considered as part of tuning when using control Loop 1 Manual PID Tuning Manual tuning is the most basic tuning method T...

Страница 64: ...p key and press Enter until the following display appears Select for Loop 1 Control Mode Closed The Power Up setting refers to how the control output will respond after the instrument is powered down...

Страница 65: ...is entered using the numeric keypad which includes the numbers 0 9 and decimal point Proportional has a range of 0 1 to 1000 with a default of 50 Press the Enter key then the Escape key to return to...

Страница 66: ...Escape key to return to the normal display 4 8 4 Setting Manual Heater Power MHP Output Manual Heater Power MHP output is a manual setting of control output It can function in two different ways depe...

Страница 67: ...slightly longer to stabilize after setpoint change than Auto PID Expect some overshoot or undershoot of the setpoint and stable temperature control at the setpoint value Auto PID Sets values for P I...

Страница 68: ...r will use the new setting while it is in the same zone and update to the zone table settings when the setpoint is changed to a value outside that zone To enter parameter values into the zone table pr...

Страница 69: ...er key to accept the new setting You will see the next display Enter for Zone 01 Manual Out 0 00 The MHP Output setting is entered using the numeric keypad which includes the numbers 0 9 and decimal p...

Страница 70: ...Heater Range Off Low Med High Proportional 0 1 1000 Integral 0 1 1000 Derivative 0 200 MHP Output 0 100 Heater Range Off Low Med High Proportional 0 1 1000 Integral 0 1 1000 Derivative 0 200 MHP Outpu...

Страница 71: ...changes from the number entered when Enter is pressed it is likely the setpoint exceeds the above limit or is inappropriate for the sensor type Once control setup parameters are configured Paragraph 4...

Страница 72: ...LED will blink while ramping is in progress If you wish to pause a ramp press the Setpoint key then immediately press the Enter key This stops the ramp at the current setpoint but leaves the ramping f...

Страница 73: ...strument Specifications Heater theory of operation is provided in Paragraph 2 4 Heater Selection and Installation Various Heater installation considerations are provided in Paragraph 3 7 Heater Output...

Страница 74: ...The following paragraphs detail the math settings in order of appearance 4 14 1 Max Min The Max Min feature captures and stores the highest Max and lowest Min reading taken since the last reset The f...

Страница 75: ...ndependently Number represents a number entered by the user X can be set to an input reading in sensor units or temperature in kelvin or Celsius SP1 represents setpoint of Loop 1 and similarly for oth...

Страница 76: ...larger number of points does more smoothing but also slows the instruments response to real changes in temperature The default number of filter points is 8 which settles in approximately 50 readings o...

Страница 77: ...Pressing the Alarm key clears latched alarms Non Latching Alarms Often tied to relay operation to control part of a system or experiment The alarm state follows the reading value The dead band parame...

Страница 78: ...he High Alarm Point is entered using the numeric keypad which includes the numbers 0 9 and decimal point For this example enter 100 K Press the Enter key Select for Alm A Alarm Latching Off Use the s...

Страница 79: ...B Alarm B Alarm Follows Input B Off Manual Off Relay remains in the normal state On Manual On Relay remains in the active state A Alarm Relay will follow Input A alarms Both Alarms Relay active when e...

Страница 80: ...0 The output is short protected so the instrument is not harmed if the heater resistance is too small It is not recommended because the additional load on instrument power supplies causes noise on int...

Страница 81: ...ess the Enter key Enter for AnOut 10V Value 100 The 10 V value is entered using the numeric keypad which includes the numbers 0 9 and decimal point For this example we will enter 100 K Press the Enter...

Страница 82: ...utput 10 V Output Manual Mode 100 0 0 V 100 0 User Entry For this example we will choose Bipolar Mode On Press the Enter key Enter for AnOut Manual Out 50 The desired fixed output you want as a percen...

Страница 83: ...be viewed but most cannot be changed from the front panel Alarm Reset and Heater Off are the only keypad functions that remain active when the keypad is locked A 3 digit keypad lock code locks and un...

Страница 84: ...IEEE 488 Interface Address and Terminators and select the Model 330 Emulation Mode To set the Serial Interface Baud rate press the Interface key Select With Baud 9600 Use the s or t key to cycle throu...

Страница 85: ...reens to appear Select With Sample Channel A Use the s or t key to toggle between Sample Channel A or B The default setting is A Press the Enter key You will see the following display Select With Samp...

Страница 86: ...ion 3 Setpoint Display Location 4 Heater Output Display Brightness 75 Heater Heater Range Off Input Setup Diode Resistor Configuration Input Type Silicon Diode Curve DT 470 Input Setup Thermocouple Co...

Страница 87: ...number of available curve locations SoftCal generated curves are stored in user curve locations 5 1 1 Curve Header Parameters Each curve has a set of parameters that are used for identification and t...

Страница 88: ...nal resolution is ignored 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...

Страница 89: ...ith every curve When controlling in temperature the setpoint cannot exceed the limit entered with the curve for the control sensor The default is 375 K Set to 9999 K if no limit is required Coeff The...

Страница 90: ...t Curve 21 User Use the s or t key to cycle through the various curves Curve numbers 21 thru 41 are used to copy or create new curves You can also view but not modify the standard curve numbers 01 thr...

Страница 91: ...proper place in breakpoint sequence NOTE Typing over an existing reading or temperature will replace that value when you press the Enter key To delete a breakpoint go to point and enter all zeros for...

Страница 92: ...y to cancel or the Enter key to erase the selected user curve You now return to the normal display 5 2 3 Copy Curve Temperature curves can be copied from one location inside the Model 332 to another T...

Страница 93: ...hase a SoftCal calibrated sensor from Lake Shore There are advantages to both methods c User When the user can provide stable calibration temperatures with the sensor installed SoftCal calibration eli...

Страница 94: ...tCal Accuracy With Silicon Diode Sensors A SoftCal calibration is only as good as the accuracy of the calibration points The accuracies listed for SoftCal assume 0 01 K for 4 2 K liquid helium 0 05 K...

Страница 95: ...e 50 K to 100 K are not allowed Point 2 Calibration data point near room temperature 305 K Temperatures outside 200 K to 350 K are not allowed Point 3 Calibration data point at a higher temperature 48...

Страница 96: ...py Use the s or t key to select the user curve location where the SoftCal curve will be stored You can choose any of the user curve locations 21 thru 41 Press the Enter key Serial 0123456789 Use the n...

Страница 97: ...83v 302 500 NOTE If Point 3 is not being used press the Enter key with both settings at their default value to complete the SoftCal calibration Use the numerical keypad to enter the measured data poin...

Страница 98: ...Lake Shore Model 332 Temperature Controller User s Manual 5 12 Advanced Operation This Page Intentionally Left Blank...

Страница 99: ...A TALKER transmits data onto the bus to other devices A LISTENER receives data from other devices through the bus The BUS CONTROLLER designates to the devices on the bus which function to perform The...

Страница 100: ...upports several command types These commands are divided into three groups 1 Bus Control Refer to Paragraph 6 1 2 1 a Universal 1 Uniline 2 Multiline b Addressed Bus Control 2 Common Refer to Paragrap...

Страница 101: ...ragraph 6 3 and summarized in Table 6 8 6 1 2 4 Message Strings A message string is a group of characters assembled to perform an interface function There are three types of message strings commands q...

Страница 102: ...Register is set If disabled the Status Byte Register can still be read by the BUS CONTROLLER by means of a serial poll SPE to examine the status reports but the BUS CONTROLLER will not be interrupted...

Страница 103: ...of the instrument The first program was written in Visual Basic Refer to Paragraph 6 1 4 1 for instructions on how to setup the program The Visual Basic code is provided in Table 6 2 The second progr...

Страница 104: ...Lake Shore Model 332 Temperature Controller User s Manual Figure 6 1 GPIB Setting Configuration Figure 6 2 DEV 12 Device Template Configuration 6 6 Remote Operation...

Страница 105: ...Visual Basic 1 Start VB6 2 Choose Standard EXE and select Open 3 Resize form window to desired size 4 On the Project Menu select Add Module select the Existing tab then navigate to the location on yo...

Страница 106: ...bject dropdown list select General Add the statement Public gSend as Boolean b Double Click on cmdSend Add code segment under Private Sub cmdSend_Click as shown in Table 6 2 c In the Code Editor windo...

Страница 107: ...nd button pressed gSend False Set Flag as False strCommand frmIEEE txtCommand Text Get Command strReturn Clear response display strCommand UCase strCommand Set all characters to upper case If strComma...

Страница 108: ...R LF 6 1 4 4 Quick Basic Program The IEEE 488 interface program in Table 6 3 works with QuickBasic 4 0 4 5 or Qbasic on an IBM PC or compatible running DOS or in a DOS window It assumes your IEEE 488...

Страница 109: ...the GPIB Valid primary addresses range from 0 to 30 00H to 1EH Adding 32 to the primary address forms the Listen Address LA Adding 64 to the primary address forms the Talk Address TA EXAMPLE Selectin...

Страница 110: ...its to the instrument and displays any response If no query is sent the instrument responds to the last query received Type EXIT to exit the program REM INCLUDE c gpib pc qbasic qbdecl bas Link to IEE...

Страница 111: ...be returned Incorrectly spelled commands and queries are ignored Commands and queries and should have a space separating the command and associated parameters Leading zeros and zeros following a deci...

Страница 112: ...connected to the instrument with a straight through cable As an example Pin 3 of the DTE connector holds the transmit line and Pin 3 of the DCE connector holds the receive line so the functions comple...

Страница 113: ...rough user programs the instrument issues responses Two or more command strings can be chained together in one communication but they must be separated by a semi colon Only one query is permitted per...

Страница 114: ...issuing queries or queries and commands together the user program should Properly format and transmit the query including terminators as one string Prepare to receive a response immediately Receive t...

Страница 115: ...on an IBM PC or compatible with a Pentium class processor A Pentium 90 or higher is recommended running Windows 95 or better with a serial interface It uses the COM1 communications port at 9600 Baud U...

Страница 116: ...lean b Double Click on cmdSend Add code segment under Private Sub cmdSend_Click as shown in Table 6 6 c In the Code Editor window under the Object dropdown list select Form Make sure the Procedure dro...

Страница 117: ...ue Loop until Send button pressed gSend False Set Flag as false strCommand frmSerial txtCommand Text Get Command strReturn Clear response display strCommand UCase strCommand Set all characters to uppe...

Страница 118: ...Program CLS Clear screen PRINT SERIAL COMMUNICATION PROGRAM PRINT TIMEOUT 2000 Read timeout may need more BAUD 9600 TERM CHR 13 CHR 10 Terminators are CR LF OPEN COM1 BAUD O 7 1 RS FOR RANDOM AS 1 LE...

Страница 119: ...tly spelled query without a nothing will be returned Incorrectly spelled commands and queries are ignored Commands and queries and should have a space separating the command and associated parameters...

Страница 120: ...curves 21 41 user curves Specify input A or B Sample Query Format Query name Brief description of query Form of the query input INCRV Input Input Curve Number Query INCRV input term a input Syntax of...

Страница 121: ...ode Query 31 FILTER Input Filter Parameter Cmd 31 FILTER Input Filter Parameter Query 31 Command Function Page HTR Heater Output Query 32 HTRST Heater Status Query 32 IEEE IEEE Interface Parameter Cmd...

Страница 122: ...a list of event flags Example To enable event flags 0 3 4 and 7 send the command QESE 143 term 143 is the sum of the bit weighting for each bit Bit Bit Weighting Event Name 0 1 OPC 3 8 DDE 4 16 EXE 7...

Страница 123: ...sents the enable disable mask of the corresponding status flag bit in the Status Byte Register To enable a status flag bit send the command QSRE with the sum of the bit weighting for each desired bit...

Страница 124: ...rm low value Sets the value the source is checked against to activate low alarm deadband Sets the value that the source must change outside of an alarm condition to deactivate an unlatched alarm latch...

Страница 125: ...the data at which the analog output reaches 100 output if bipolar or 0 output if positive only manual value If mode is 2 this parameter is the output of the analog output Example ANALOG 0 1 A 1 100 0...

Страница 126: ...t term Format n Refer to command for description CMODE Control Loop Mode Command Input CMODE loop mode term Format n n loop Specifies which loop to configure 1 or 2 mode Specifies the control mode Val...

Страница 127: ...er Example CRVHDR 21 DT 470 00011134 2 325 0 1 term 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 neg...

Страница 128: ...in current or power Valid entries 1 current or 2 power Example CSET 1 A 1 1 term Control Loop 1 controls off of Input A with setpoint in kelvin CSET Control Loop Parameter Query Input CSET loop term...

Страница 129: ...ote commands ACUR ACUR BCUR BCUR The following Model 330 commands are not supported in 330 Emulation Mode CUID CURV CURV ECUR KCUR and SCAL EMUL 330 Emulation Mode Query Input EMUL term Returned off o...

Страница 130: ...current terminator the instrument uses EOI mode uses CR LF as the new terminator and responds to address 4 IEEE IEEE 488 Interface Parameter Query Input IEEE term Returned terminator EOI enable addre...

Страница 131: ...compensation if input is thermocouple Always 0 if input is a diode Remarks Sensor type NTC RTD 75mV 7 5k listed twice to maintain compatibility with Model 331 INTYPE command Example INTYPE A 0 0 term...

Страница 132: ...ce Valid entries 1 a value 2 SP1 3 SP1 4 SP2 5 SP2 varB value Specifies a value for b in the equation if B source is 1 Example LINEAR A 1 1 0 1 3 term The linear data for Input A is calculated from th...

Страница 133: ...source Specifies input data to process through max min Valid entries 1 kelvin 2 Celsius 3 sensor units 4 linear data Example MNMX B 3 term Input B min max function is on and processes data from the in...

Страница 134: ...r 2 Returned value Format nnnnnn term Refer to command for description PID Control Loop PID Values Command Input PID loop P value I value D value term Format n nnnnnn nnnnnn nnnnnn loop Specifies loop...

Страница 135: ...current setpoint to the target setpoint at 10 5 K minute RAMP Control Setpoint Ramp Parameter Query Input RAMP loop Format n loop Specifies which loop to query 1 or 2 Returned off on rate value term F...

Страница 136: ...ecifies relay mode 0 Off 1 On 2 Alarms input alarm Specifies which input alarm activates the relay when the relay is in alarm mode A or B alarm type Specifies the input alarm type that activates the r...

Страница 137: ...U3 value Specifies third sensor units point Remarks Generates a SoftCal curve Refer to Paragraph 5 3 Example SCAL 1 21 1234567890 4 2 1 6260 77 32 1 0205 300 0 0 5189 term Generates a three point Soft...

Страница 138: ...fies the top temperature of this zone P value Specifies the P for this zone 0 1 to 1000 I value Specifies the I for this zone 0 1 to 1000 D value Specifies the D for this zone 0 to 200 mout value Spec...

Страница 139: ...d universal European line cord and fuses for 220 240 setting 7 2 OPTIONS The list of Model 332 options is provided as follows Model Description Of Options 8000 CalCurve on CD or E Mail The Model 8000...

Страница 140: ...ble down to cryogenic temperatures Indium can be used to create solder bumps for microelectronic chip attachments and also as gaskets for pressure and vacuum sealing purposes ID 10 31 Indium Disks are...

Страница 141: ...7 4 VGE 7031 IMI 7031 Varnish formerly GE 7031 Varnish 1 pint can IMI 7031 Insulating Varnish and Adhesive possesses electrical and bonding properties which when combined with its chemical resistance...

Страница 142: ...h and Low terminals on the controller must be connected to the High and Low terminals marked From Controller on the Model 3003 The binding posts or a dual banana plug can be used to connect to the mod...

Страница 143: ...Lake Shore Model 332 Temperature Controller User s Manual C 331 7 3 eps Figure 7 3 Model RM 1 2 Rack Mount Kit Options and Accessories 7 5...

Страница 144: ...n head screws from side of instrument 2 Place Instrument on shelf 3 Use 5 64 inch 2 mm hex key to reinstall two 6 32 x 1 4 black button head screws through side of rack into corresponding holes in the...

Страница 145: ...f only a few hundred volts may damage electronic components such as semiconductors thick and thin film resistors and piezoelectric crystals during testing handling repair or assembly Discharge voltage...

Страница 146: ...he voltage indicator in the window of the line input assembly 10 Connect the instrument power cord 11 Turn the line power switch On l 120 100 120 220 240 V 10 6 Voltage 50 60 Hz 150 VA MAX 100 120V 22...

Страница 147: ...r Output Relays and Analog Output and RS 232 connectors are defined in Figures 8 2 thru 8 5 For thermocouple connector details refer to Figure 3 4 I I V V C331 8 2 eps Pin Symbol Description 1 I Curre...

Страница 148: ...oltage Output Lo Figure 8 4 RELAYS and ANALOG OUPUT Terminal Block 1 2 3 4 5 6 7 8 9 RS 232 DTE F 331 8 5 eps Model 332 Temperature Controller Typical Computers DE 9P DTE DB 25P DTE DE 9P DTE Pin Desc...

Страница 149: ...out 7 DTR tied to 4 8 CTS in 8 NC 1 DCD in Model 332 to PC Serial Interface PC with DB 25P Model 332 DE 9P Standard Null Modem Cable DE 9S to DB 25S PC DB 25P 5 GND 7 GND 2 RD in 2 TD out 3 TD out 3 R...

Страница 150: ...n and signal names as viewed from the Model 332 rear panel 11 12 10 9 8 7 6 5 4 3 2 1 23 24 22 21 20 19 18 17 16 15 14 13 IEEE 488 INTERFACE SH1 AH1 T5 L4 SR1 RL1 PP0 DC1 DT0 C0 E1 C 331 8 6 eps PIN S...

Страница 151: ...at may potentially require replacement The location of the ICs is shown in Figure 8 7 Input Microcontroller U16 Contains software that configures the inputs takes readings and performs control functio...

Страница 152: ...gnators JMP1 thru JMP8 CAUTION Only JMP4 JMP7 and JMP8 should be changed by the user Please consult with Lake Shore before changing any of the other jumpers Reference Designator Silkscreen Default Des...

Страница 153: ...or over the high end of the curve T Under Input at or under the low end of the curve HTR Open No heater load is connected to the rear panel heater terminals Most commonly repaired by checking the hea...

Страница 154: ...Lake Shore Model 332 Temperature Controller User s Manual P 332 8 7 bmp Figure 8 7 Location Of Internal Components 8 10 Service...

Страница 155: ...7 is ideal for this purpose DE 9 to DE 9 cable Pin to pin connections on all 9 pins Female connectors on both ends DE 9 null modem adapter Test and Measurement Equipment Digital Multimeter DMM with mi...

Страница 156: ...t and gain errors Calibration Process 8 10 2 1 Sensor Input Calibration Setup and Serial Communication Verification Allow the Model 332 to warm up for at least one hour with 100 k resistors attached t...

Страница 157: ...e DMM to read VDC and attach to the resistor 16 Verify the voltage across to resistor to be within 0 3 of the value calculated in Step 14 8 10 2 3 Diode Input Ranges Calibration Purpose To determine t...

Страница 158: ...and provide offset and gain calibration constants back to the Model 332 This step will calibrate all resistive ranges with reversing both on and off Process 1 Configure the input for the resistive ra...

Страница 159: ...m 500 499 0 027 On 11 Platinum 1000 5 k 0 520 Off 4 Platinum 1000 5 k 0 520 On 12 NTC RTD 75 75 0 015 Off 14 NTC RTD 75 75 0 015 On 17 NTC RTD 750 750 0 155 Off 15 NTC RTD 750 750 0 155 On 18 NTC RTD...

Страница 160: ...A 6 0 0122 6 Connect input to standard and DMM with cable described in Paragraph 8 10 1 7 Set the voltage reference to provide the calibration voltage shown in Table 8 3 Using the DMM measure the vol...

Страница 161: ...put negative terminal 3 Set the analog output to manual mode bipolar mode on manual output of 100 Read the output voltage with the DMM to a tolerance of 0 0010 VDC and record this negative full scale...

Страница 162: ...ery Input CALG input type term Format a nn input A B or V type 0 7 or 10 19 Returned value term Format nnnnnnn Refer to command for description CALREAD Six Digit Input Reading Query Input CALREAD inpu...

Страница 163: ...term Remarks Saves all CALZ and CALG calibration constants to the E2 prom CALZ Zero Offset Calibration Constant Command Input CALZ input type value term Format a nn nnnnnnn input Specifies which input...

Страница 164: ...Lake Shore Model 332 Temperature Controller User s Manual 8 20 Service This Page Intentionally Left Blank...

Страница 165: ...11 38 0 00397 0 1007 9 0 1144 2 906 19 0 0359 0 9116 29 0 0113 0 2859 39 0 00353 0 08969 10 0 1019 2 588 20 0 0338 0 8118 30 0 0100 0 2546 40 0 00314 0 07987 ambient temperature The temperature of the...

Страница 166: ...tance temperature detector based on a ceramic oxy nitride resistance material CGR Carbon Glass Resistor cgs system of units A system in which the basic units are the centimeter gram and second 2 Cheby...

Страница 167: ...c data exchange DDE A method of interprocess communication which passes data between processes and synchronized events DDE uses shared memory to exchange data between applications and a protocol to sy...

Страница 168: ...ing The addressable parallel bus specification is defined by the IEEE initial permeability The permeability determined at H 0 and B 0 initial susceptibility The susceptibility determined at H 0 and M...

Страница 169: ...medium to an applied field H The relationship is given by the following equation B 0 H M for SI and B H 4 M for cgs where H magnetic field strength M magnetization and 0 permeability of free space 4...

Страница 170: ...function of the dependent variable positive temperature coefficient PTC Refers to the sign of the temperature sensitivity For example the resistance of a PTC sensor increases with increasing temperat...

Страница 171: ...rage is taken over one complete cycle Also known as effective value 1 room temperature compensation Thermocouples are a differential measurement device Their signal represents the difference in temper...

Страница 172: ...from a difference in temperature at two points along a circuit as in the Seebeck effect 1 thermocouple A pair of dissimilar conductors so joined at two points that an electromotive force is developed...

Страница 173: ...onomer Fahrenheit Abbreviation F A temperature scale that registers the freezing point of water as 32 F and the boiling point as 212 F under normal atmospheric pressure Originally devised by Gabriel F...

Страница 174: ...48 116 67 243 67 153 15 120 240 151 11 122 04 239 67 150 93 122 22 238 150 123 15 230 145 56 127 59 229 67 145 37 127 78 225 67 143 15 130 220 140 133 15 219 67 139 82 133 33 210 134 44 138 71 209 67...

Страница 175: ...quick comparison between LHe and LN2 is provided in Table C 1 Table C 1 Comparison of Liquid Helium and Liquid Nitrogen PROPERTY LIQUID HELIUM LIQUID NITROGEN Boiling Point 1 atm in K Thermal Conducti...

Страница 176: ...ry effort to protect eyes and skin from accidental contact with liquid or the cold gas issuing from it Protect your eyes with full face shield or chemical splash goggles Safety glasses even with side...

Страница 177: ...09062 0 10191 0 11356 0 12547 0 13759 0 14985 0 16221 0 17464 0 18710 0 19961 0 22463 0 24964 0 27456 0 28701 0 32417 0 36111 0 41005 0 44647 0 45860 0 50691 0 51892 0 55494 0 60275 0 63842 0 67389 0...

Страница 178: ...4506 1 36423 1 38361 1 40454 1 42732 1 45206 1 48578 1 53523 1 56684 1 58358 1 59690 1 60756 1 62125 1 62945 1 63516 1 63943 1 64261 1 64430 20 2 17 10 15 90 14 90 14 00 13 15 12 35 11 55 10 75 10 00...

Страница 179: ...00 0 3 820 4 235 5 146 5 650 6 170 6 726 7 909 9 924 12 180 15 015 19 223 23 525 32 081 46 648 62 980 75 044 98 784 116 270 131 616 148 652 165 466 182 035 198 386 216 256 232 106 247 712 261 391 276...

Страница 180: ...6 3 05322 3 05466 3 05618 3 05780 3 05952 3 06135 3 06330 3 06537 3 06760 3 06968 3 07190 3 07428 3 07685 3 07922 3 08175 3 08447 3 08786 3 09150 3 09485 3 09791 3 10191 3 10638 3 11078 3 11558 3 1208...

Страница 181: ...62 63 64 65 66 3 40482 3 40688 3 40905 3 41134 3 41377 3 41606 3 41848 3 42105 3 42380 3 42637 3 42910 3 43202 3 43515 3 43853 3 44230 3 44593 3 44984 3 45355 3 45734 3 46180 3 46632 3 47012 3 47357...

Страница 182: ...5 110 5 113 5 116 5 119 5 122 5 125 5 128 5 131 5 134 5 137 5 140 5 144 147 5 151 154 5 158 161 5 165 168 5 172 176 180 184 188 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113...

Страница 183: ...00 6 582330 6 442220 6 299900 6 155400 6 008740 5 859960 5 687430 5 512090 5 334130 5 153520 4 970330 4 784590 4 596330 4 405600 4 212440 3 992330 3 769140 3 543070 3 314120 3 082340 2 847790 2 610520...

Страница 184: ...913940 3 821970 3 728520 3 633620 3 537260 3 439460 3 340240 3 239610 3 122930 3 004370 2 884040 2 761910 2 638010 2 512340 2 384920 2 255770 2 124900 1 992320 1 858060 1 705090 1 549970 1 392820 1 2...

Страница 185: ...6 35 8 15 9 75 12 5 16 95 19 3 22 2 26 29 1 31 3 34 5 36 3 49 8 55 4 60 5 65 5 70 5 76 80 85 5 89 5 90 5 94 95 5 100 110 120 130 140 150 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52...

Страница 186: ...80 2 877550 2 776950 2 675700 2 563610 2 450770 2 337230 2 223010 2 097700 1 971630 1 844890 1 706840 1 568040 1 428520 1 277520 1 114900 0 940599 0 754604 0 556906 0 358437 0 170179 0 041150 0 152699...

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