MODEL 335 TEMPERATURE CONTROLLER
Contents
1. 0 0906 V 5 391V 1 422 V 0 8978 V 0 3778 V 3 6600 20 38 Q 110 35 0 185 668 Q 2322 40 1248 2 0 277 320 30 392 Q 26566 0 3507 2 Q 205 67 Q 45 03 0 18225 0 449 0 940 270 15288 0 16890 2530 2 80 103900 0 584 60 14 330 8 550 37010 2005 0 13700 1049 0 5862 9 uV 1075 3 pV 13325 pV 499938 3 uV gt Control stability of the electronics only in an ideal thermal system Non HT version maximum temperature 325 K 7 Accuracy specification does not include errors from room temperature compensation eC www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com 12 49 mV K 1 73 mV K 2 3 mV K 2 12 mV K 13 1 mV K 1 92 mV K 2 4 mV K 2 22 mV K 97 5 mV K 1 24 mV K 2 85 mV K 3 15 mV K 0 191 O K 0 423 Q K 0 387 Q K 0 378 Q K 10785 Q K 2665 2 Q K 32 209 Q K 0 0654 Q K 48449 Q K 1120 8 Q K 2 4116 Q K 0 0829 Q K 193453 Q K 581 Q K 26 6 Q K 0 024 Q K 26868 Q K 862 Q K 62 0 Q K 0 021 Q K 520000 Q K 422 3 Q K 0 098 Q K 0 0094 Q K 5478 Q K 667 Q K 80 3 Q K 1 06 Q K 15 6 pV K 40 6 uV K 41 7 pV K 36 006 pV K 0 8 mK 5 8 mK 4 4mK 4 8 mK 0 8 mK 5 2 mK 4 2 mK 4 5 mK 0 2 mK 16 mK 7mK 6 3 mK 5 3 MK 2 4 mK 2 6 mK 2 7 mK 6 uK 17 uK 62 uK 16 mK 15 uK 152 uK 830 uK 12 mK 3 UK 33 uK 38 uK 8 4 mK 19 uK 62 uK 32 uK 9 6 mK 12 uK 52 uK 2 mK 22 mK 32 uK 90 uK 590 uK 39 mK 26 mK 10 mK 10 mK 122. Heater output display Numeric display in percent of full scale for power or current Heater output resolution 1 Display annunciators Control input alarm tuning LED annunciators Remote alarm control outputs Keypad 25 key silicone elastomer keypad Front panel features Front panel curve entry display brightness control and keypad lock out Interface EEE 488 2 Capabilities SH1 AH1 T5 L4 SR1 RL1 PPO DC1 DTO CO E1 Readingrate To 10 rdg s on each input Software support LabVIEW driver contact Lake Shore for availability USB Function Emulates a standard RS 232 serial port Baud rate 57 600 Connector B type USB connector Readingrate To 10 rdg s on each input Software support LabVIEW driver contact Lake Shore for availability Special interface features Model 331 332 command emulation mode Alarms Number 2 high and low for each input Data source Temperature or sensor units Settings Source high setpoint low setpoint deadband latching or non latching audible on off and visible on off Actuators Display annunciator beeper and relays Relays Number 2 Contacts Normally open NO normally closed NC and common C Contactrating 30VDCat3A Operation Activate relays on high low or both alarms for any input or manual mode Connector Detachable terminal block General Ambient temperature 15 C to 35 C at rated specifications 5 C to 40 C at reduced specifications Power requirement 100 120 220 24
3. sensor You ll never again have to be concerned with temperature sensor over or under errors and measurement continuity issues The intuitive front panel layout and keypad logic bright vacuum fluorescent display and LED indicators enhance the user friendly front panel interface ofthe Model 335 Four standard display modes are offered to accommodate different instrument configurations and user preferences Say goodbye to sticky notes and hand written labels as the ability to custom label sensor inputs eliminates the guesswork in remembering or determining the location to which a sensor input is associated These features combined with USB and IEEE 488 interfaces and intuitive menu structure and logic supports efficiency and ease of use As a replacement to our popular Model 331 and 332 temperature controllers the Model 335 offers software emulation modes for literal drop in compatibility The commands you are accustomed to sending to the Model 331 and 332 will either be interpreted directly or translated to the most appropriate Model 335 setting The Model 335 comes standard equipped with all of the functionality of the controllers it replaces but offers additional features that save you time and money With the Model 335 you get a temperature controller you control from the world leader in cryogenic thermometry www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Sen
4. 0 VAC 10 50 or 60 Hz 210 VA Size 217 mm W x 90 mm Hx 317 mm D 8 5 in x 3 5 in x 14 5 in half rack 7 6 kg 16 8 Ib CE mark Weight Approval ee www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com LakeShore Lake Shore Cryotronics Inc 575 McCorkle Boulevard Westerville OH 43082 8888 USA Tel 614 891 2244 Fax 614 818 1600 e mail info lakeshore com www lakeshore com Established in 1968 Lake Shore Cryotronics Inc isan international leader in developing innovative measurement and control solutions Founded by Dr John M Swartz a former professor of electrical engineering at the Ohio State University and his brother David Lake Shore produces equipment for the measurement of cryogenic temperatures magnetic fields and the characterization of the physical properties of materials in temperature and magnetic environments VAC 100 VAC 120 VAC 120 ALL VAC 220 VAC 240 2 diode RTD inputs and 2 control outputs 2 thermocouple input option for Model 335 Instrument configured for 100 VAC with U S power cord Instrument configured for 120 VAC with U S power cord Instrument configured for 120 VAC with U S power cord and universal Euro line cord and fuses for 220 240 VAC setting Instrument configured for 220 VAC with universal Euro line cord Instrument configured for 240 VAC with universal Euro line cord Other country line cords available consult Lake
5. 1 2244 fax 614 818 1600 e mail info lakeshore com Typical Sensor Performance Electronic control stability temperature equivalents Electronic accuracy temperature equivalents Measurement resolution temperature equivalents Example Lake Shore sensor voltage Temperature Nominal Typical resistance sensor sensitivity Temperature accuracy including electronic accuracy CalCurve and calibrated sensor Silicon Diode Silicon Diode GaAlAs Diode 100 Q Platinum RTD 500 0 Full Scale Cernox Cernox Germanium Germanium Carbon Glass Rox Thermocouple 50 mV 3060 4 Typical sensor sensitivities were taken from representative calibrations for the sensor listed DT 670 CO 13 with 1 4H calibration DT 470 SD 13 with 1 4H calibration TG 120 SD with 1 4H calibration PT 103 with 14 calibration CX 1010 SD with 0 3L calibration CX 1050 SD HT with 1 4M calibration GR 300 AA with 0 3D calibration GR 1400 AA with 1 4D calibration CGR 1 500 with 1 4L calibration RX 102A AA with 0 3B calibration Type K 1 4K 77K 300 K 500K 1 4K 77K 300K 475K 1 4K TIK 300K 475K 30K 77K 300K 500K 0 3 K 0 5 K 4 2K 300K 1 4K 4 2K 77K 420K 0 35 K 1 4K 4 2K 100 K 1 8K 4 2K 10K 100 K 1 4K 4 2K 77K 300 K 0 5K 1 4K 4 2K 40K 75K 300K 600 K 1505 K 1 664 V 1 028 V 0 5597 V 0 0907 V 1 6981 V 1 0203 V 0 5189 V
6. 35 autotuning method calculates PID parameters and provides feedback to help build zone tables The setpoint ramp feature provides smooth continuous setpoint changes and predictable approaches to setpoint without the worry of overshoot or excessive settling times The instrument s zone tuning feature automatically switches temperature sensor inputs when your temperature range goes beyond the useable range of a given sensor This feature combined with the instrument s ability to scale the sensor excitation through ten pre loaded current settings allows the Model 335 to provide continuous measurement and control from 300 mK to 1505 K Both control outputs are variable DC current sources referenced to chassis ground As a factory default outputs 1 and 2 provide 50 Wand 25 W of continuous power respectively both to a 50 Q or 25 Q load For increased functionality output 2 can also be set to voltage mode When set to voltage mode it functions as a 10 V analog output while still providing 1 W of heater power and full closed loop PID control capability While in this mode output 1 can provide up to 75 W of heater power to a 25 Q load Model 335 Rear Panel Connections 0 0 HI L7AMmax LO o o 1amax LO 55 ae net B aa xa 10V 30VDC 3A ouT2 RELAY 1 RELAY 2 Temperature limit settings for inputs are provided as a safeguard against system damage Each input is assigned a temperature limit and if any in
7. Not Recommended Germanium GR 1400 AA 1 8 K to 100 K Not Recommended Carbon Glass CGR 1 500 1 4 Kto 325 K T gt 2K amp BS19T Carbon Glass CGR 1 1000 1 7 K to 325 K T gt 2K amp BS19T Carbon Glass CGR 1 2000 2 Kto 325 K T gt 2K amp BS19T Rox RX 102 0 3 K to 40 K T gt 2K amp BS10T Rox RX 103 1 4 Kto 40 K T gt 2K amp BS10T Rox RX 202 0 3 K to 40 K T gt 2K amp BS10T Thermocouples Type K 9006 006 3 2 Kto 1505 K Not Recommended 3060 F Type E 9006 004 3 2 Kto 934K Not Recommended Chromel 9006 002 1 2 Kto 610 K Not Recommended AuFe 0 07 7 Non HT version maximum temperature 325 K Low temperature limited by input resistance range 3 Low temperature specified with self heating error lt 5 mK Silicon diodes are the best choice for general cryogenic use from 1 4 K to above room temperature Silicon diodes are economical to use because they follow a standard curve and are interchangeable in many applications They are not suitable for use in ionizing radiation or magnetic fields Cernox thin film RTDs offer high sensitivity and low magnetic field induced errors over the 0 3 K to 420 K temperature range Cernox sensors require calibration Platinum RTDs offer high uniform sensitivity from 30 K to over 800 K With excellent reproducibility they are useful as thermometry standards They follow a standard curve above 70 K and are interchangeable in many applications rr www lakeshore com Lake Shore Cryotronics Inc 614 89
8. Q 0 002 1 0 Q 0 04 10 mQ 0 001 of rdg 9C 300 mQ 0 004 of rd of rd of rd 00 to 30 kO 300 nA 100 mQ 450 mQ 0 002 2 0 Q 0 04 30 mQ 0 0015 of rdg C 900 mQ 0 004 of rdg of rdg of rdg 00 to 100 kO 100 nA 10 1 5 Q 0 005 10 00 0 04 100 mQ 0 002 ofrdg C 3 Q 0 01 of rdg of rdg of rdg Thermocouple Positive 50 mV NA 0 1 uV 0 4 uV 1 uV 0 05 0 1 uV 0 001 of rdg C 0 8 uV of rdg 1 Control stability of the electronics only in ideal thermal system Current source error has negligible effect on measurement accuracy Diode input excitation can be set to 1 mA Current source error is removed during calibration gt Accuracy specification does not include errors from room temperature compensation Accuracy at Tea typically 23 5 C 41 5 C Sensor Input Configuration Thermometry Thermocouple Measurement type 4 lead differential 2 lead differential room temperature compensated Excitation Constant current with current NA reversal for RTDs Supported sensors Diodes Silicon GaAlAs Most thermocouple types RTDs 100 Q Platinum 1000 Q Platinum Germanium Carbon Glass Cernox and Rox Standard curves DT 470 DT 670 DT 500 D Type E Type K Type T DT 500 E1 PT 100 PT 1000 AuFe 0 07 vs Cr RX 102A RX 202A AuFe 0 03 vs Cr Input connector 6 pin DIN Screw terminals in a ceramic isothermal block 6 Number of inputs 2 Input configuration Isolation A D resolut
9. Shore 106 009 G 106 233 G 106 773 MAN 335 6201 8001 335 CAL 335 CERT CAL 335 DATA 112 177 112 178 Heater output connector dual banana jack Sensor input mating connector 6 pin DIN plug 2 included Terminal block 8 pin Calibration certificate Model 335 user manual 1 m 3 3 ft long IEEE 488 GPIB computer interface cable assembly CalCurve factory installed the breakpoint table from a calibrated sensor stored in the instrument extra charge for additional sensor curves Instrument recalibration with certificate Instrument recalibration with certificate and data Cable assembly for 2 sensors and 2 heaters 335 10 ft Cable assembly for 2 sensors and 2 heaters 335 20 ft
10. V 10V Heater load for max power 250 500 100 Q Heater load range 100 to 1000 100 Q min short circuit protected Ranges 3 decade steps in power N A Heater noise 0 12 pA RMS 0 3 mV RMS Heater connector Dual banana Detachable terminal block Grounding Output referenced to chassis ground Safety limits Curve temperature power up heater off short circuit protection Warm up heater mode settings output 2 only Warm up percentage 0 to 100 with 1 resolution Warmupmode_ Continuous control or auto off Monitor output settings output 2 voltage only Scale User selected Data source Temperature or sensor units Settings Input source top of scale bottom of scale or manual Update rate 10 s Range 10V Resolution 16 bit 0 3 mV Accuracy 2 5 mV Noise 0 3 mV RMS Minimum load resistance 100 Q short circuit protected Connector Detachable terminal block Front Panel Display 2 line by 20 character 9 mm character height vacuum fluorescent display Number of reading displays 1to4 Display units K C V mV Q Reading source Temperature sensor units max and min Display update rate 2 rdg s Temperature display resolution 0 001 from 0 to 99 9999 0 01 from 100 to 999 999 0 1 above 1000 Sensor units display resolution Sensor dependent to 5 digits Other displays Sensor name setpoint heater range heater output and PID Setpoint setting resolution Same as display resolution actual resolution is sensor dependent
11. Wg lt 25 TEMPERATURE CONTROLLER Remote Alarm SETPOINT InputSetup OutputSetup Display Setup Curve Entry interface Remote Local MAO amp RampRate ZoneSettings Autotune Alarm Relays Max Min Reset COA OoO VS ENTER akeShore Model 335 Temperature Controller E Operates down to 300 mK with appropriate NTC RTD sensors E Two sensor inputs Two configurable PID control loops providing 50 W and 25Wor75Wand1w E Autotuning automatically calculates PID parameters E Automatically switch sensor inputs using zones to allow continuous measurement and control from 300 mK to 1505 K E Custom display set up allows you to label each sensor input M USB and IEEE 488 interfaces E Supports diode RTD and thermocouple temperature sensors M Sensor excitation current reversal eliminates thermal EMF errors for resistance sensors E 10 V analog voltage output alarms and relays RampRate ZoneSettings Autotune 335 Temperature Controller ee Remote led Alarm SET N id E I InputSetup OutputSetup DisplaySetup Curve Entry Cs Remote Local OL ange Ses 1 ee 28 Alarm CJ Tei Introduction Designed with the user and ease of use in mind the Model 335 temperature controller offers many user configurable features and advanced functions that until now have been reserved for more expensive high end temperature controllers The Model 335 is the first two channel temperature controller avai
12. cs Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Configurable Display The Model 335 offers a bright vacuum fluorescent display that simultaneously displays up to four readings You can display both control loops or if you need to monitor just one input you can display just that one in greater detail Or you can custom configure each display location to suit your experiment Data from any input can be assigned to any of the locations and your choice of temperature sensor units can be displayed For added convenience you can also custom label each senor input eliminating the guesswork in remembering or determining the location to whicha sensor input is associated Two Input One Loop Display with Labels Standard display option featuring two inputs and associated outputs Custom Display with Labels Reading locations can be user configured to accommodate application needs Here the input names are shown above the measurement readings along with the designated input letters Intuitive Menu Structure Logical navigation allows you to spend more time on research and less time on setup Model 3060 Thermocouple Input Option The field installable Model 3060 thermocouple input option adds thermocouple functionality to both inputs While the option can be easily removed this is not necessary as the Standard inputs remain fully functional when they are not being used to measure thermocouple temperatu
13. de Negative OVto2 5V 10 pA 0 05 3 100 V 10 pV 80 pV 0 005 10 uV 0 0005 of rdg C 20 uV of rd OVto10V 10 pA 0 05 3 100 uV 20 uV 80 uV 0 01 20 uV 0 0005 of rdg C 40 uV of rdg PTC RTD Positive 00Qto100 1 mA 0 1mQ 0 2mQ 0 002 Q 0 01 mQ 0 001 of rdg C 0 4 mQ 0 01 of rdg 0Qto300 1 mA 0 1mQ 0 2 mQ 0 002 O 0 03 mQ 0 001 of rdg C 0 4 mQ 0 01 of rdg 0Oto1000 1 mA 1mOQ 2mQ 0 004 Q 0 1 mQ 0 001 of rdg C 4 mQ 0 01 of rdg 00 to3000 1mA 1mQ 2 mQ 0 004 Q 0 3 MQ 0 001 of rdg C 4 mQ 0 01 of rdg 0Oto1kO 1 mA 10 mQ 20 mQ 0 04 Q 0 02 1 mQ 0 001 of rdg C 40 mQ of rdg 0Qto3kQ 1 mA 10 mQ 20mQ 0 04 Q 0 02 3 mO 0 001 of rdg C 40 mQ of rdg 00 to10kO 1 mA 100 mQ 200 mQ 0 4 O 0 02 10 mQ 0 001 of rdg C 400 mQ of rdg NTC RTD Negative 00Oto100Q 1 mA 0 1mQ 0 15 mQ 0 002 Q 0 01 mQ 0 001 of rdg C 0 3 mQ 10 mV 0 06 of rdg 00 to300 300 pA 0 1m0Q 0 45 mQ 0 002 O 0 03 mQ 0 0015 of rdg C 0 9 mQ 0 06 of rdg 00to 1000 100 pA 1mQ 1 5mQ 0 01 Q 0 04 0 1 mQ 0 001 of rdg C 3 mO of rdg 00 to 3000 30 pA 1mQ 4 5mQ 0 01 Q 0 04 0 3 mQ 0 0015 of rdg C 9 mQ of rdg 0ONto1kO 10 pA 10 mQ 15 mQ 0 002 0 1 Q 0 04 1 mQ 0 001 of rdg C 30 mQ 0 004 of rdg of rdg of rdg 00 to3kO 3 pA 10 mQ 45 mO 0 002 0 10 0 04 3 mO 0 0015 of rdg C 90 mQ 0 004 of rdg of rdg of rdg 00 to10kO 1 pA 100 mQ 150 m
14. ermocouples Non volatile memory can also store up to 39 200 point CalCurves for Lake Shore calibrated temperature sensors or user curves A built in SoftCal algorithm can be used to generate curves for silicon diodes and platinum RTDs that can be stored as user curves Temperature sensor calibration data can be easily loaded into the Model 335 temperature controller and manipulated using the Lake Shore curve handler software program Sensor input connectors Terminal block analog outputs relays USB interface EEE 488 interface Line input assembly O Output 2 heater Output 1 heater Thermocouple option inputs Temperature Control Providing a total of 75 W of heater power the Model 335 is the most powerful half rack temperature controller available Designed to deliver very clean heater power precise temperature control is ensured throughout your full scale temperature range for excellent measurement reliability efficiency and throughput Two independent PID control outputs can be configured to supply 50 Wand 25 Wor 75 W and 1 W of heater power Precise control output is calculated based on your temperature setpoint and feedback from the control sensor Wide tuning parameters accommodate most cryogenic cooling systems and many high temperature ovens commonly used in laboratories PID values can be manually set for fine control or the improved autotuning feature can automate the tuning process The Model 3
15. ion Input accuracy Inputs can be configured from the front panel to accept any of the Supported input types Thermocouple inputs require an optional input card that can be installed in the field Once installed the thermocouple input can be selected from the front panel like any other input type Sensor inputs optically isolated from other circuits but not each other 24 bit Sensor dependent refer to Input Specifications table Measurement resolution Sensor dependent refer to Input Specifications table Maximum updaterate 10 rdg s on each input 5 rdg s when configured as 100 kQ NTC RTD with reversal on Autorange Automatically selects appropriate NTC RTD or PTC RTD range User curves Room for 39 200 point CalCurves or user curves SoftCal Improves accuracy of DT 470 diode to 0 25 K from 30 K to 375 K improves accuracy of platinum RTDs to 0 25 K from 70 K to 325 K stored as user curves Math Maximum and minimum Filter Averages 2 to 64 input readings rrr www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Control Control outputs 2 Heater outputs Control type Closed loop digital PID with manual heater output or open loop warm up mode output 2 only Update rate 10 s Tuning Autotune one loop at a time PID PID zones Control stability Sensor dependent see Input Specifications table PID control settings Proportional gain Oto 1000 with 0 1 setting resolution In
16. lable with user configurable heater outputs delivering a total of 75 W of low noise heater power 50 W and 25 W or 75 W and 1 W With that much heater power packed into an affordable half rack sized instrument the Model 335 gives you more power and control than ever Control outputs are equipped with both hardware and software features allowing you and not your temperature controller to easily control your experiments Output one functions as a current output while output two can be configured in either current or voltage mode With output two in voltage mode it functions as a 10 V analog output while still providing 1 W of heater power and full closed loop proportional integral derivative PID control capability Alarms and relays are included to help automate secondary control functions The improved autotuning feature ofthe Model 335 can be used to automatically calculate PID control parameters so you spend less time tuning your controller and more time conducting experiments The Model 335 supports the industry s most advanced line of cryogenic temperature sensors as manufactured by Lake Shore including diodes resistance temperature detectors RTDs and thermocouples The controllers zone tuning feature allows you to measure and control temperatures seamlessly from 300 mK to over 1 500 K This feature automatically switches temperature sensor inputs when your temperature range goes beyond the useable range of a given
17. mK 13 mK 76 mK 47 mK 40 mK 13 mK 69 mK 45 mK 38 mK 7 mK 180 mK 60 mK 38 mK 13 mK 10 mK 39 mK 60 mK 0 1 mK 0 2 mK 3 8 mK 339 mK 0 3 mK 2 1 mK 38 mK 338 mK 48 uK 481 uK 1 8 mK 152 mK 302 uK 900 uK 1 8 mK 177 mK 0 1 mK 0 8 mK 108 mK 760 mK 0 5 mK 1 4 mK 8 mK 500 mK 0 25 K7 0 038 K7 0 184 K 0 73 K 25 mK 98 mK 79 mK 90 mK 25 mK 91 mK 77 mK 88 mK 19 mK 202 mK 92 mK 88 mK 23 mK 22 mK 62 mK 106 mK 3 6 mK 4 7 mK 8 8 mK 414 mK 5 3 mK 7 1 mK 54 mK 403 mK 4 2 mK 4 7 mK 6 8 mK 175 mK 4 5 mK 5 1 mK 6 8 mK 200 mK 4 1 mK 4 8 mK 133 mK 865 mK 5 mK 6 4 mK 24 mK 537 mK Calibration not available from Lake Shore 1 6 mK 11 6 mK 8 8 mK 9 6 mK 1 6 mK 10 4 mK 8 4 mK 9 mK 0 4 mK 32 mK 14 mK 13 mK 10 6 mK 4 8 mK 5 2 mK 5 4 mK 12 uK 34 uK 124 uK 32 mK 30 uK 304 uK 1 6 mK 24 mK 6 uK 66UK 74 uK 16 8 mK 38 uK 124 uK 64 uK 19 2 mK 24 uK 104 uK 4 mK 44 mK 64 uK 180 uK 1 2 mK 78 mK 52 mK 20 mK 20 mK 24 mK Model 335 Specifications Input Specifications 0 Input range Excitation current Display resolution Measurement resolution Electronic control stability Electronic accuracy Measurement temperature coefficient Dio
18. put exceeds that limit both control channels are automatically disabled Interface The Model 335 is standard equipped with universal serial bus USB and parallel IEEE 488 interfaces In addition to gathering data nearly every function of the instrument can be controlled via computer interface You can download the Lake Shore curve handler software program to your computer to easily enter and manipulate sensor calibration curves for storage in the instrument s non volatile memory The USB interface emulates an RS 232C serial port ata fixed 57 600 baud rate but with the physical plug ins of a USB It also allows you to download firmware upgrades ensuring the most current firmware version is loaded into your instrument without having to physically change your instrument Both sensor inputs are equipped with a high and low alarm which offers latching and non latching operation The two relays can be used in conjunction with the alarms to alert you of a fault condition and perform simple on off control Relays can be assigned to any alarm or operated manually The 10 V analog voltage output can be configured to send a voltage proportional to temperature to a strip chart recorder or data acquisition system You may select the scale and data sent to the output including temperature or sensor units A i A y A e 4 ge K ay V gt a a Tm sera z songs on i z a www lakeshore com Lake Shore Cryotroni
19. re sensors Calibration for the option is stored on the card so it can be installed in the field and used with multiple Model 335 temperature controllers without recalibration 4 Sensor Selection Sensor Temperature Range sensors sold separately Model Useful range Magnetic field use Diodes Silicon Diode DT 670 SD 1 4 K to 500 K T260K amp BS3T Silicon Diode DT 670E BR 30 K to 500 K T260K amp BS3T Silicon Diode DT 414 1 4K to 375K T260K amp BS3T Silicon Diode DT 421 1 4K to 325K T260K amp BS3T Silicon Diode DT 470 SD 1 4 K to 500 K T260K amp BS3T Silicon Diode DT 471 SD 10 K to 500 K T260K amp BS3T GaAlAs Diode TG 120 P 1 4K to 325K To4 2K amp BS5T GaAlAs Diode TG 120 PL 1 4K to 325K To4 2K amp BS5T GaAlAs Diode TG 120 SD 1 4 K to 500 K T gt 4 2K amp B lt 5T Positive Temperature 100 Q Platinum PT 102 3 14 K to 873 K T gt 40K amp B lt 2 5T Coefficient RTDs 100 0 Platinum PT 111 14 K to 673 K T gt 40K amp BS2 5T Rhodium lron RF 800 4 1 4 K to 500 K T gt 77 K amp BS8T Rhodium lron RF 100T U 1 4K to 325K T gt 77K amp BS8T Negative Cernox CX 1010 0 3 Kto 325 K T gt 2K amp BS19T Temperature Cernox CX 1030 HT 0 3 Kto 420 K T gt 2K amp BS19T Coefficient RTDs Cernox CX 1050 HT 1 4 Kto 420K T gt 2K amp BS19T Cernox CX 1070 HT 4 K to 420 K T gt 2K amp B lt 19T Cernox CX 1080 HT 20 K to 420 K T gt 2K amp B lt 19T Germanium GR 300 AA 0 35 K to 100 K
20. sor Inputs The Model 335 offers two standard sensor inputs that are compatible with diode and RTD temperature sensors The field installable Model 3060 option adds thermocouple functionality to both inputs Sensor inputs feature a high resolution 24 bit analog to digital converter and each of the two powered outputs function as separate current sources Both sensor inputs are optically isolated from other circuits to reduce noise and to deliver repeatable sensor measurements Current reversal eliminates thermal electromagnetic field EMF errors in resistance sensors Ten excitation currents facilitate temperature measurement and control down to 300 mK using appropriate negative temperature coefficient NTC RTDs Autorange mode automatically scales excitation current in NTC RTDs to reduce self heating at low temperatures as sensor resistance changes by many orders of magnitude Temperatures down to 1 4 K can be measured and controlled using silicon or GaAlAs diodes Software selects the appropriate excitation current and signal gain levels when the sensor type is entered via the instrument front panel To increase your productivity the unique zone setting feature automatically switches sensor inputs enabling you to measure temperatures from 300 mK to over 1 500 K without interrupting your experiment The Model 335 includes standard temperature sensor response curves for silicon diodes platinum RTDs ruthenium oxide RTDs and th
21. tegral reset 1 to 1000 1000 s with 0 1 setting resolution Derivative rate 1to200 with 1 resolution Manual output O to 100 with 0 01 setting resolution Zone control 10 temperature zones with P D manual heater out heater range control channel ramp rate Setpoint ramping 0 1 K min to 100 K min Output 1 Type Variable DC current source Control modes Closed loop digital PID with manual output or open loop D A resolution 16 bit 25 Q setting 50 Q setting Max power 75 W 50 W 50W Max current 1 73A 1 41 A 1A Voltage compliance min 43 3 V 35 4 V 50V Heater load for max power 250 250 500 Heater load range 10 1 to 100 O Ranges 3 decade steps in power Heater noise 0 12 pA RMS dominated by line frequency and its harmonics Heater connector Dual banana Grounding Output referenced to chassis ground Safety limits Curve temperature power up heater off short circuit protection 75 W only available when output 2 is in voltage mode Output 2 Type Variable DC current source or voltage source Current mode Voltage mode Control modes Closed loop digital PID with Closed loop digital PID with manual output zone open loop manual output zone open loop warm up monitor out D A resolution 15 bit 16 bit bipolar 15 bit unipolar 25Qsetting 50 Q setting N A Max power 25W 25W 1W Max current 1A 0 71A 100 mA Voltage compliance min 25V 35 4
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