Model 340 Temperature Controller
Contents
1. Sensor Input Excitation Display Measurement Electronic Electronic Temperature Range Current Resolution Resolution Accuracy Control Coefficient Stability Diode negative OR 102 5 V 10 uA 0 05 10 uV 10 uV 80 uV 0 005 of rdg 20 uV 340 3462 negative 0 Vto7 5V 10 uA 0 05 10 uV 10 uV 80 uV 0 01 of rdg 20 uV PTC RTD positive 0 Q to 250 Q 1 mA 1 mQ 1 mQ 0 002 Q 0 01 of rdg 2 MQ 340 3462 positive 0 Q to 500 Q 1 mA 1 mQ 1 mQ 0 002 Q 0 01 of rdg 2 MQ positive 0 Q to 2500 Q 0 1 mA 10 MQ 10 MQ 0 03 Q 0 02 of rdg 20 MQ NTC RTD negative 0Qto10Q 100 uA 100 uQ 1mQ 0 02 rng 0 1 rdg 2 MQ 1 mV negative 0 Q to 30Q 30 uA 100 uQ 3 MQ 0 02 rng 0 1 rdg 6 MQ 340 3462 negative 0 Q to 100 Q 10 uA 1 mQ 10 MQ 0 02 rng 0 1 rdg 20 mQ negative 0 Q to 300 Q 3 uA 1 mQ 30 MQ 0 02 rng 0 1 rdg 60 mQ negative 0 Qto 1 kQ 1 A 10 mQ 0 1 Q 0 02 rng 0 1 rdg 020 negative 0 Q to 3 KQ 300 nA 10 MQ 030 0 02 rng 0 1 rdg 0 6 Q negative 0 Q to 10 kQ 100 nA 0 1 Q 1Q 0 02 rng 0 1 rdg 2 Q negative 0 Q to 30 KQ 30 nA 0 1 Q SQ 0 02 rng 0 1 rdg 6Q NTC RTD negative 0 Q to 30 Q 300 uA 100 uQ 300 uQ 0 02 rng 0 05 rdg 600 uQ 10 mV negative 0 Q to 100 Q 100 uA 1 mQ 1 mQ 0 02 rng 0 05 rdg 2 MQ 340 3462 negative 0 Q to 300 Q 30 uA 1 mQ 3 MQ 0 02 rng 0 05 rdg 6 MQ negative 0 Q to 1 kQ 10 uA 10 MQ 10 MQ 0 02 rng 0 05 rdg 20 MQ negative 0 Q to 3 KQ 3 uA 10 MQ 30 MQ 0 02 rng 0 05 rdg 60 MQ negative 0 Q t2. 116 uK with 1 4L 4 2K 584 6 Q 422 3 Q K 24 uK 1 2 mK 5 2 mK 48 uK calibration T K 14 33 Q 0 098 Q K 3 1 mK 140 mK 165 mK 6 2 mK 300 K 8 55 Q 0 0094 Q K 32 mK SIMEK 12 K 64 mK Rox RX 102A AA 0 5 K 3701 Q 5478 Q K 19 uK 0 7 mK 5 2 MK 38 uK with 0 3B 1 4K 2005 Q 667 Q K 45 uK 2 4 mK 7 4 mK 90 uK calibration 4 2 K 1370 Q 80 3 Q K 375 uK 16 mK 32 mK 750 uK 40K 1049 Q 1 06 Q K 29 mK 1 1K 1 2 K 58 mK Thermocouple Type K 75K 5862 9 uV 15 6 uV K 26 mK al ayy Calibration not available 52 mK 50 mV 300 K 1075 3 uV 40 6 uV K 10 mK 0 038 K from Lake Shore 20 mK 3464 600 K 13325 uV 41 7 uV K 10 mK 0 184 K 20 mK 1505 K 49998 3 uV 36 006 uV K 12 mK 0 73 K 24 mK Capacitance CS 501GR 42K 6 nF 27 pF K 7 4 mK 2 08 K Calibration not available 14 8 mK 150 nF 77K 9 1 nF 52 pF K 3 9 mK 1 14K from Lake Shore 7 8 mK 3465 200 K 19 2 nF 174 pF K 1 mK 0 4K 2 mK 7 Typical sensor sensitivities were taken from representative calibrations for the sensor listed 8 Control stability of the electronics only in an ideal thermal system Non HT version maximum temperature 325 K 10 Accuracy specification does not include errors from room temperature compensation www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 340 Temperature Controller Specifications Input Specifications
3. 6 mK 60 mK 92 mK 7 2 mK 475 K 0 3778 V 3 15 mV K oe mK 38 mK 88 mK 6 4 mK 100 Platinum RTD PT 103 with 30 K 3 660 Q 0 191 Q K 5 3 mK 13 mK 23 mK 10 6 mK 500 Q Full Scale 14J calibration 77K 20 38 Q 0 423 Q K 2 4 mK 10 mK 22 mK 4 8 mK 300 K 110 35 Q 0 387 Q K 2 6 mK 34 mK 57 mK 5 2 mK 500 K 185 668 Q 0 378 Q K 2 7 mK 55 mK 101 mK 5 4 mK Cernox CX 1010 SD 0 3 K 2322 4 Q 10785 Q K 3 uK 0 2 mK 3 7 mK 6 uK with 0 3L 0 5 K 1248 2 Q 2665 2 Q K 12 uK 0 5 mK 5 mK 24 uK calibration 4 2 K 211 32 Q 32 209 Q K 94 uK 6 2 mK 11 2 mK 188 uK 300 K 30 392 Q 0 0654 Q K 15 mK 540 mK 580 mK 30 mK Cernox CX 1050 SD HT 1 4K 26566 Q 48449 kQ K 6 uK 0 4 mK 5 4 mK 12 uK with 1 4M 4 2K 3507 2 Q 1120 8 kQ K 90 uK 3 4 mK 8 4 mK 180 uK calibration 10K 205 67 Q 2 4116 Q K 1 3 mK 68 mK 84 mK 2 6 mK 420 K 45 03 Q 0 0829 Q K 12 mK 520 mK 585 mK 24 mK Germanium GR 200A 250 0 5 K 29970 Q 221000 Q K 14 uK 0 2 mK 4 5 mK 28 uK with 0 5D 1 4K 1376 Q 2220 Q K 140 uK 0 9 mK 4 9 mK 280 uK calibration 4 2 K 198 9 Q 68 9 Q K 440 uK 3 8 mK 7 8 mK 880 uK 100 K 2 969 Q 0 025 Q K 40 mK 200 mK 216 mK 80 mK Germanium GR 200A 500 1 4K 8257 Q 19400 KO K 52 uK 0 6 mK 4 6 mK 104 uK with 0 5D 4 2 K 520 Q 245 kQ K 410 uK 3 0 mK 7 mK 820 uK calibration 10K 88 41 Q 19 5 Q K 515 uK 5 6 mK 10 6 mK 1 03 mK 100 K 1 751 Q 0 014 Q K 72 mK 270 mK 286 mK 114 mK Carbon Glass CGR 1 500 1 4K 103900 Q 520000 Q K 58 uK 0 6 mK 4 6 mK
4. 68 Cernox CX 1070 HT 15K to420K2 T gt 2K amp B lt 19T Cernox CX 1080 HT 50K to 420K T gt 2K amp B lt 19T Germanium GR 200A B 1000 2 2 K to 100 K Not Recommended Germanium GR 200A B 1500 2 6 K to 100 K Not Recommended Germanium GR 200A B 2500 3 1 K to 100 K Not Recommended Carbon Glass CGR 1 500 4 K to 325 K T gt 2K amp B lt 19T Carbon Glass CGR 1 1000 5 K to 325 K5 T gt 2K amp B lt 19T Carbon Glass CGR 1 2000 6 K to 325 K T gt 2K amp B lt 19T Rox RX 102A 1 4 K to 40 K T gt 2K amp B lt 10T www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 89 Instruments Silicon diodes are the best choice for general cryogenic use from 1 4 K to above room temperature 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 Single excitation current may limit the low temperature range of NTC resistors 3 Non HT version maximum temperature 325 K 4 Low temp
5. 86 Instruments Model 340 Temperature Controller Model 340 Temperature Controller Turniry a 10 3401k Setp 10 340 Hest 4 6 8 T Loop 1 Senzor A K il 340 Temperature Controller i i i Alarm Gara emu BS um 12679 5 aes aes eS eB Soe cee wn bee wo wa i 138 0 Hout m fe TMM mm w z C Hexar M la Wa 4 pz EA Help HE Semon Loop 3 Rasti Bani Optans E m e ea Tlm Features M Operates down to 100 mK with appropriate NTC RTD sensors Two sensor inputs expandable to ten sensor inputs Supports diode RTD Capacitance and thermocouple sensors Sensor excitation current reversal eliminates thermal EMF errors Two autotuning control loops 100 W and 1 W TEEE 488 and RS 232C interfaces analog outputs digital I 0 and alarm relays www lakeshore com Lake Shore Cryotronics Inc Product Description The Model 340 is our most advanced temperature controller and offers unsurpassed resolution accuracy and stability for temperature measurement and control applications to as low as 100 mK Operating with diodes platinum RTDs and negative temperature coefficient NTC resistor sensors the Model 340 is expandable to ten sensor inputs or to operate with thermocouple or capacitance sensors It has two control loops with the first loop powered to 100 W Sensor Inputs The Model 340 features two inputs with high resolution 24 bit analog to digital conver
6. Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com
7. Silicon Diode DT 421 1 4 K to 325 K T gt 60K amp B lt 3T Silicon Diode DT 470 SD 1 4 K to 500 K T gt 60K amp B lt 3T Silicon Diode DT 471 SD 10 K to 500 K T gt 60K amp B lt 3T GaAlAs Diode TG 120 P 1 4 K to 325 K T gt 42K amp B lt 5T GaAlAs Diode TG 120 PL 1 4Kt0325K T gt 42K amp B lt 5T GaAlAs Diode TG 120 SD 14Kto500K T gt 42K amp B lt 5T Positive Temperature 100 Q Platinum PT 102 3 14 K to 873 K Coefficient RTDs 100 Q Platinum PT 111 14Kt0673K T gt 40K amp B lt 2 5T 340 3462 Rhodium Iron RF 800 4 1 4 K to 500 K T gt 77K amp B lt 8T Rhodium lron RF 100T U 1 4 K to 325 K T gt 77K amp B lt 8T Negative Cernox CX 1010 0 3 K to 325K T gt 2K amp B lt 19T Temperature Cernox CX 1030 HT 0 3 K to 420 K T gt 2K amp B lt 19T Coefficient RTDs Cernox CX 1050 HT 1 4Kto 420K T gt 2K amp B lt 19T 340 3462 Cernox CX 1070 HT 4 K to 420 K3 T gt 2K amp B lt 19T Cernox CX 1080 HT 20K to 420 K 3 T gt 2K amp B lt 19T Germanium GR 200A 30 0 1 K to 5 Kk Not Recommended Germanium GR 200A 50 0 2 K to 40 K5 Not Recommended Germanium GR 200A 100 0 3 K to 100 K Not Recommended Germanium GR 200A 250 0 5 K to 100 K Not Recommended Germanium GR 200A B 500 1 4 K to 100 K Not Recommended Germanium GR 200A B 1000 1 4 K to 100 K Not Recommended Germanium GR 200A B 1500 1 4 K to 100 K Not Recommended Germanium GR 200A B 2500 1 4 K to 100 K Not Recommended Carbon Glass CGR 1 500 1 4 K to 325 K T gt 2K amp B lt 19T Carbon Glass CGR 1 1000 1 7Kto325K T gt 2K
8. amp B lt 19T Carbon Glass CGR 1 2000 2 K to 325 K T gt 2K amp B lt 19T Rox RX 102 0 1 K to 40 K T gt 2K8 amp B lt 10T Rox RX 103 1 4 K to 40 K T gt 2K amp B lt 10T Rox RX 202 0 1 K to 40 K T gt 2K amp B lt 10T Thermocouples Type K 9006 006 3 2 Kto 1505 K Not Recommended 3464 Type E 9006 004 3 2 K to 934 K Not Recommended Chromel AuFe 0 07 9006 002 1 2 K to 610 K Not Recommended Capacitance CS 501 1 4 K to 290 K Not Recommended 3465 Diodes Silicon Diode DT 670 SD 1 4 K to 500 K T gt 60K amp B lt 3T 3468 Silicon Diode DT 670E BR 30 K to 500 K T gt 60K amp B lt 3T Silicon Diode DT 414 1 4 K to 375 K T gt 60K amp B lt 3T Silicon Diode DT 421 1 4 K to 325 K T gt 60K amp B lt 3T Silicon Diode DT 470 SD 1 4 K to 500 K T gt 60K amp B lt 3T Silicon Diode DT 471 SD 10 K to 500 K T gt 60K amp B lt 3T GaAlAs Diode TG 120 P 1 4Kt0 325K T gt 42K amp B lt 5T GaAlAs Diode TG 120 PL 1 4Kt0 325K T gt 42K amp B lt 5T GaAlAs Diode TG 120 SD 14Kto500K T gt 42K amp B lt 5T Positive Temperature 100 Q Platinum PT 102 3 14Kto 800K T gt 40K amp B lt 2 5T Coefficient RTDs 100 Q Platinum PT 111 14Kt0673K T gt 40K amp B lt 2 5T 3468 Rhodium lron RF 800 4 1 4 K to 500 K T gt 77K amp B lt 8T Rhodium lron RF 100T U 1 4 K to 325 K T gt 77K amp B lt 8T Negative Cernox CX 1010 2 K to 325 K5 T gt 2K amp B lt 19T Temperature Cernox CX 1030 HT 3 5 K to 420 K3 T gt 2K amp BS19T Coefficient RTDs Cernox CX 1050 HT 4 K to 420 K T gt 2K amp B lt 19T 34
9. er and relays Relays Number 2 Contacts Normally open NO normally closed NC and common Contact Rating 30 VDC at 2 A Operation Activate relays on high or low alarms for any input or manual off on Connector Detachable terminal block Analog voltage outputs when not used as control loop 2 output Number 2 Scale User selected Update rate 20 readings per s Data source Temperature Sensor Units and Linear Equation Settings Input Source Top of Scale Bottom of Scale or Manual Range 10 Resolution 1 25 mV Accuracy 2 5 mV Max output power 1 W Min load resistance 100 Q short circuit protected Source impedance 0 01 Q Digital 1 0 5 inputs and 5 outputs TTL voltage level compatible Data card PC card Type Il slot used for curve transfer setup storage and data logging General Ambient temp range 20 C to 30 C 68 F to 86 F for specified accuracy 15 C to 35 C 59 F to 95 F for reduced accuracy Power requirements 100 120 220 240 VAC 5 10 50 or 60 Hz 190 VA Size 432mm W x 89 mm H x 368 mm D 17 in x 3 5in x 14 5 in full rack 8 kg 17 6 Ib approx CE mark Weight Approval fax 614 818 1600 e mail info lakeshore com Model 340 Temperature Controller Extending Temperature Controller Heater Power It is often necessary to extend the heater power of Ordering Information a cryogenic temperature controller to conduct Part number Description experiments above room temperature T
10. erature limited by input resistance range gt Low temperature specified with self heating error lt 5 mK 6 Low temperature specified with self heating error lt 12 mK fax 614 818 1600 e mail info lakeshore com 90 Instruments Sensor Selection Typical Sensor Performance see Appendix F for sample calculations of typical sensor performance Model 340 Temperature Controller Example Temp Nominal Typical Measurement Electronic Temperature Electronic Control Lake Shore Resistance Sensor Resolution Accuracy Accuracy including Stability Sensor Voltage Sensitivity Temperature Temperature Electronic Accuracy Temperature Equivalents Equivalents CalCurve and Equivalents 340 3462 Calibrated Sensor Silicon Diode DT 670 C0 13 1 4K 1 664 V 12 49 mV K 0 8 mK 13 mK 25 mK 1 6 mK with 1 4H 77K 1 028 V 1 73 mV K 5 8 mK 76 mK 98 mK 11 6 mK calibration 300 K 0 5597 V 2 3 mV K 4 4 mK 47 mK 79 mK 8 8 mK 500 K 0 0907 V 2 12 mV K 4 8 mK 40 mK 90 mK 9 6 mK Silicon Diode DT 470 SD 13 1 4K 1 6981 V 13 1 mV K 0 8 mK 13 mK 25 mK 1 6 mK with 1 4H 77K 1 0203 V 1 92 mV K 5 2 mK 69 mK 91 mK 10 4 mK calibration 300 K 0 5189 V 2 4 mV K 4 2 mK 45 mK 77 mK 8 4 mK 475 K 0 0906 V 2 22 mV K 4 5 mK 38 mK 88 mK 9 mK GaAlAs Diode TG 120 SD 1 4K 5 391 V 97 5 mV K 0 1 mK 7 mK 19 mK 0 2 mK with 1 4H 77K 1 422 V 1 24 mV K 8 1 mK 180 mK 202 mK 16 2 mK calibration 300 K 0 8978 V 2 85 mV K 3
11. ges in setpoint This feature permits faster experiment cycles since data can be taken as the system is changing in temperature It can also be used to make a more predictable approach to a setpoint temperature The zone feature can automatically change control parameter values for operation over a large temperature range Values for ten different temperature zones can be loaded into the instrument which will select the next appropriate zone value on setpoint change IEEE 488 INTERFACE SH1 AH1T5 L4 SR1 RL1 PPO DC1 DTO CO E1 DATA CARD SERIAL VO 7 Line Input Assembly Data Card Heater Fuse Heater Output Option Slots Digital I 0 www lakeshore com Lake Shore Cryotronics Inc DIGITAL VO IEEE 488 Interface Serial RS 232C 1 0 614 891 2244 Instruments 87 The Model 340 can run a set of instrument instructions called an internal program Each program represents the temperature changes needed to conduct a user s experiment The setpoint can be changed or ramped up and down and other controller parameters can be programmed For simple experiments the internal program eliminates the need for computer control It is also common for the internal program to be used along with the computer interface so the computer is not slowed down by temperature control overhead Several math features are included to improve usability and aid in setting up experiments It is often u
12. his diagram illustrates a practical way to increase the control 340 2 diode resistor inputs temperature controller output of the Model 340 to several hundred watts Select a power configuration A programming resistor R m is placed across the VAC 100 Instrument configured for 100 VAC with U S power cord VAC 120 ALL Instrument configured for 120 VAC with U S power cord heater output current changes a changing voltage and universal Euro line cord and fuses for 220 240 VAC setting is generated across Ro That voltage is used to VAC 220 Instrument configured for 220 VAC with universal program a large external power supply Nee should Euro line cord Euro line cord can be used The control output of loop 2 on the Other country line cords available consult Lake Shore Model 340 is a voltage thus it can be connected directly to the external power supply without R Accessories included G 106 009 Heater output connector dual banana jack 106 233 Two sensor mating connector 6 pin DIN plugs used for sensor inputs pae E E a e i aa accepts up to 12 AWG wire 2001 4 wire RJ11 cable assembly 4 6 m 14 ft long 240 ONLY used with RS 232C interface Ri heater 2003 RJ11 to DE 9 adapter adapts RJ11 receptacle to acne female DE 9 connector connects Model 340 to customer computer rear RS 232C serial port Calibration certificate MAN 340 Model 340 user manual 3003 Heater Output Conditioner The heater output conditioner is a pa
13. ividual sensor around a few known temperature reference points e mail info lakeshore com Model 340 Temperature Controller Temperature Control The Model 340 offers two proportional integral derivative PID control loops A PID control algorithm calculates control output based on temperature setpoint and feedback from the control sensor Wide tuning parameters accommodate most cryogenic cooling systems and many small high temperature ovens Control output is generated by a high resolution digital to analog converter for smooth continuous control The user can manually set the PID values or the autotuning feature of the Model 340 can automate the tuning process The main heater output for the Model 340 is a well regulated variable DC current source Heater output is optically isolated from other circuits to reduce interference and ground loops Heater output can provide up to 100 W of variable DC power to control Loop 1 Features have been added to the Model 340 to minimize the possibility of overheating delicate sensors and wiring in cryostats These features include setpoint temperature limit heater current range limit internal heater diagnostics and a fuse in the heater output wiring The Model 340 also has the ability to run a second independent control loop intended to reduce the temperature gradients in one cooling system rather than to run two different cooling systems The setpoint ramp feature allows smooth continuous chan
14. mocouple and capacitance are optional and sold as additional input cards Isolation Sensor inputs optically isolated from other circuits but not from Measurement 4 lead differential 2 lead 4 lead each other type room temperature A D resolution 24 bit analog to digital compensated Input accuracy sensor dependent refer to Input Specifications table Excitation Constant current with NA 4 88 kHz Measurement resolution Sensor dependent refer to Input Specifications table current reversal for RTDs 1 V square wave Maximum update rate Up to 20 readings per s on an input 40 readings per s on all inputs ae Autorange Automatically selects appropriate NTC RTD range Supported Diodes Silicon GaAlAs Most thermocouple CS 501GR a sensors RTDs 100 Q Platinum types User curves Forty 200 point CalCurves or user Curves 1000 Platinum SoftCal Improves accuracy of DT 470 diode or platinum RTD sensors GeenanlimCarion Clase Math Maximum and minimum of input readings and linear equation Cernox and Rox Filt i i iet di i er Averages input readings to quiet display settable time constant T DT 470 DT 500D ieee Wek Wet ee curves DT 670 PT 100 AuFe 0 07 vs Cr PT 1000 RX 102A AuFe 0 03 vs Cr RX 202A Input 6 pin DIN Ceramic isothermal 6 pin DIN connector block www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Control Control loops 2 Control type Closed l
15. nce Heater Maximum Current Resistance Range 1A 0 5 A 0 25 A 5 A 3 2 1 9 4 3 2 1 5 A 3 2 1 www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 Model 340 Temperature Controller Front Panel Display Graphic LCD with fluorescent backlight No of reading displays 1 to 8 Display units Temperature in K C or sensor units Temp display resolution 0 0001 K below 10 K 0 001 K above 10 K Sensor units Sensor dependent to 6 digits display resolution Setpoint setting Same as display resolution resolution actual resolution is sensor dependent Heater output display Numeric display in percent of full scale for power or current bar graph display of heater output available Heater output resolution 0 1 numeric or 2 graphical Keypad Numeric plus special function Front panel features Front panel curve entry display brightness control and keypad lock out Interfaces IEEE 488 2 interface Features SH1 AH1 T5 L4 SR1 RL1 PPO DC1 DTO CO E1 Reading rate To 20 readings per s Software support National Instruments LabVIEW driver Serial interface Electrical format RS 232C Max baudrate 19 200 baud Connector RJ 11 Reading rate To 20 readings per s Alarms Number Two high and low for each installed input Data source Temperature Sensor Units and Linear Equation Settings Source High and Low Setpoint Latching or Non Latching and Audible On Off Actuators Display annunciator beep
16. new readings for all eight inputs twice each second The 3468 inputs are not recommended for temperature control because the reading rate is too slow to allow good stability A variety of sensor types are supported by the Model 3468 but not as many as the standard inputs Diode and platinum configurations have similar specifications to the standard inputs reduced only slightly to account for multiplexing However the NTC RTD configuration is quite different than the standard inputs The option has a limited resistance range of 7 5 kQ with a fixed current excitation of 10 pA This limitation significantly reduces the low temperature range of the inputs The option also does not support current reversal to reduce the effect of thermal EMF voltages The original standard inputs remain fully functional allowing the Model 340 to measure 10 sensors when the option is installed www lakeshore com Lake Shore Cryotronics Inc 614 891 2244 fax 614 818 1600 e mail info lakeshore com Model 340 Temperature Controller Sensor Temperature Range sensors sold separately Model Useful Range Magnetic Field Use Diodes Silicon Diode DT 670 SD 1 4 K to 500 K T gt 60K amp B lt 3T 340 3462 Silicon Diode DT 670E BR 30 K to 500 K T gt 60K amp B lt 3T Silicon Diode DT 414 1 4K to 375 K T gt 60K amp B lt 3T
17. o 10 KQ 1 uA 0 1 Q 0 1 Q 0 02 rng 0 05 rdg 0 2 Q negative 0 Q to 30 kQ 300 nA 0 1 Q 0 3 Q 0 02 rng 0 05 rdg 0 6 Q negative 0 Q to 100 kQ 100 nA 1Q SQ 0 02 rng 0 05 rdg 6Q negative 0 Q to 300 kQ 30 nA 1Q 30 Q 0 02 rng 0 25 rdg 60 Q Thermocouple positive 125 MV NA 0 1 uV 0 2 uV 1 UV 0 05 of rdg 0 4 uV 3464 positive 50 mV NA 0 1 uV 0 4 uV 1 uV 0 05 of rdg 0 8 uV Capacitance positive or negative 0 nF to 150 nF 4 88 kHz 10 pF 2 0 pF 50 pF 0 1 of rdg 4 0 pF 3465 1 V square wave positive or negative 0 nF to 15 nF 4 88 kHz 1 pF 0 2 pF 50 pF 0 1 of rdg 0 4 pF 1 V square wave Diode negative 0 V to 2 5 V 10 uA 0 01 100 uV 20 uV 160 uV 0 01 of rdg 40 uV 3468 negative 0 Vto 7 5 V 10 uA 0 01 100 uV 20 uV 160 uV 0 02 of rdg 40 uV PTC RTD positive 0 Q to 250 Q 1 mA 0 3 10 MQ 2 MQ 0 004 Q 0 02 of rdg 4 mQ 3468 positive 0 Q to 500 Q 1 mA 0 3 10 mQ 2 MQ 0 004 Q 0 02 of rdg 4 mQ positive 0 Q to 5000 Q 1 mA 0 3 100 mQ 20 MQ 0 06 Q 0 04 of rdg 40 mQ NTC RTD negative 0 Q to 7500 Q 10 uA 0 01 100 mQ 50 MQ 0 01 Q 0 04 of rdg 0 1 Q 3468 11 Control stability of the electronics only in an ideal thermal system 1 Accuracy specification does not include errors from room temperature compensation Sensor Input Configuration Diode RTD Thermocouple Thermometry Number of inputs Input configuration 2 included additional inputs optional Each input is factory configured as diode RTD Ther
18. oop digital PID with manual heater power output or open loop Autotune one loop at a time manual PID zones Sensor dependent to 2x measurement resolution in an ideal thermal system Tuning Control stability PID control settings Proportional gain 0 to 1000 with 0 1 setting resolution Integral reset 1 to 1000 with 0 1 setting resolution Derivative rate 1 to 1000s with 1 s resolution Manual output 0 to 100 with 0 01 setting resolution Zone control 10 temperature zones with P 1 D manual heater power out and heater range 0 1 K per min to 100 K per min Setpoint limit curve temp limits heater output slope limit heater range limit power up heater off and short circuit protection Setpoint ramping Safety limits Heater Output Specifications Heater output type Variable DC current source Variable DC voltage Heater output D A resolution 18 bit 14 bit Max heater power 100 W 1W Max heater output current 2A 0 1A Heater output compliance 50 V 10 V Heater source impedance NA 0 01 Q Heater output ranges 5 decade steps in power 1 Heater load type Resistive Resistive Heater load range 10 Q to 100 Q recommended 100 Q minimum Heater load for max power 25 Q 100 Q Heater noise lt 1 kHz RMS 50 uV 0 001 of output voltage lt 0 3 mV Isolation Optical isolation between None output and other circuits Heater connector Dual banana BNC Loop 1 Full Scale Heater Power at Typical Resista
19. seful to have reading filters and maximum and minimum calculations easily available on the front panel The Model 340 also computes a linear equation on reading data to allow flexibility in how the display represents experimental inputs Interface The Model 340 can be fully involved in computer controlled experiments It is equipped with IEEE 488 and RS 232C interfaces Either interface can send settings to the Model 340 and collect reading data from it Even the analog outputs relays and Digital I O can be controlled by computer interface The Model 340 has several features to make it more valuable as part of a larger measuring system Two analog voltage outputs can be used to report a voltage that is proportional to the temperature of an input The outputs can be controlled manually as a voltage source for any other application Two relays can be used with the alarm setpoints in latching mode for error detection or in nonlatching mode for simple on and off control Digital I O can be used with an external scanner or manually 341230 CE Z RELAYS o L HI NC CNO NC CNO amp amp ANALOG ANALOG OUT 1 OUT 2 amp Relays Analog Outputs Standard Sensor Inputs fax 614 818 1600 e mail info lakeshore com 88 Instruments Model 340 Temperature Controller Configurable Display The Model 340 includes a graphic LCD with fluorescent backlight display that is fully config
20. sor on the card manages the A D and communication with the Model 340 Allows the Model 340 to read four sensors and use any of them as a control sensor 3464 Dual Thermocouple Input Option Card Adds two new thermocouple inputs to the Model 340 appearing on the display as C and D The card has separate A Ds and excitation for each sensor A microprocessor on the card manages the A D and communication with the Model 340 Thermocouple inputs range from cryogenic temperature to 1000 C with built in room temperature compensation Curves for thermocouple types E K and AuFe 0 07 vs Cr are included The user can add other types 3465 Single Capacitance Input Option Card Adds a new capacitance input to the Model 340 appearing on the display as C The card has separate A D and excitation for the sensor A microprocessor on the card manages the A D and communication with the Model 340 The 3465 is intended to control temperature in strong magnetic fields using a Lake Shore Model CS 501 capacitance temperature sensor 3468 Eight Channel Input Option Card Adds eight sensor inputs to the Model 340 The optional inputs are broken into two groups of four and appear on the display as C1 C4 for Input C D1 D4 for Input D The 3468 includes two A D converters one for each group of four inputs and individual excitation for each sensor Each input group must use the same sensor type but the two groups can be different The multiplexed inputs provide
21. ssive filter which oa and N seit hare o DB 25 adapter further reduces the already low Model 340 heater output 2003 RJ11 to DE 9 adapter noise The typical insertion loss for the Model 3003 is 20 dB 3003 Heater output conditioner at or above line frequency and gt 40 dB at or above double 3462 2 channel card for additional standard sensors line frequency A 144 mm W x 72 mm H x 165 mm D 3464 2 channel card for thermocouple sensors 5 7 in x 2 8 in x 6 5 in panel mount enclosure houses this S eA E E p 3468 8 channel scanner card for silicon diodes option and it weighs 1 6 kg 3 5 lb PTC and NTC RTD sensors 3507 2SH Cable assembly for 2 sensors and 1 heater 8001 340 CalCurve factory installed the breakpoint table from a Calibrated sensor stored in the instrument 8072 IEEE 488 computer interface interconnect cable assembly CAL 340 CERT Instrument calibration with certificate CAL 3462 CERT 3462 card recalibration with certificate CAL 3464 CERT 3464 card recalibration with certificate CAL 3465 CERT 3465 card recalibration with certificate CAL 3468 CERT 3468 card recalibration with certificate HTR 25 25 Q 25 W cartridge heater HTR 50 50 Q 50 W cartridge heater RM 1 Rack mounting kit roe ee y FROM CONTROLLER TO HEATER CAUT AHIS af saat co MUST BE HI JI CONNECTED TO HI TERMINAL OF A THE CONTROLLER J E LakeShore 3003 Heater Output Conditioner www lakeshore com Lake Shore Cryotronics
22. ter and low noise circuit design providing temperature readings with resolution as low as 0 1 mK at 4 2 K Sensors are optically isolated from other instrument functions for quiet and repeatable sensor measurements 614 891 2244 fax 614 818 1600 Appropriate sensor excitation and input gain can be selected from the front panel An autorange mode keeps the power in NIC resistors low to reduce self heating as sensor resistance changes by many orders of magnitude Automatic current reversal with rounded square wave excitation for NTC resistors eliminates the effect of thermal EMF Standard temperature response curves for silicon diodes platinum RTDs and many thermocouples are included Up to twenty 200 point CalCurves for Lake Shore calibrated sensors or user curves can be loaded into non volatile memory via a computer interface or the instrument front panel CalCurves can be installed at the factory when purchased with a Model 340 or they can be field installed using the data card slot A built in SoftCal algorithm can also be used to generate curves for silicon diodes and platinum RTDs for storage as user curves 1 The Lake Shore SoftCal algorithm for silicon diode and platinum RTD sensors is a good solution for applications that need more accuracy than a standard sensor curve but do not warrant traditional calibration SoftCal uses the predictability of a standard curve to improve the accuracy of an ind
23. urable and can display up to eight readings R ri F Alarm S f m NA This shows a variation of the display with a large loop 1 heater output graphic bar where the PID parameters are not displayed but the heater output is more prominent lmniii biser iassi ERES The user can display 1 to 8 readings from any of the available inputs The units available are the sensor units of mV V Q kQ nF or temperature units of C or K Results of the math feature can also be selected mret INPUT SETUP l Eri zi ky gas Tuorped Coerox herm Come Of Sersaor Unit 9 Teme Coeff Hetl oe 2D Eee haters lnU val a eee k i Ef 1 bl a i E W py ey eE om f en F L ee oe E rial I The user can select the sensor type and the controller will automatically select the sensor units excitation and range If special type is selected the user can choose any available excitation and input range Additional Inputs Available For Model 340 The following optional inputs are available for the Model 340 Only one can be installed at a time and the standard inputs stay in the instrument and remain fully functional Calibration for the option is stored on the card so it can be installed in the field without recalibration 3462 Dual Standard Input Option Card Adds two standard inputs to the Model 340 appearing on the display as C and D The card has separate A Ds and excitation for each sensor A microproces
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