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  4. 336
  5. User Manual

Lakeshore 336 User Manual

Summary of 336

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    Model 336 temperature controller limited warranty statement warranty period: three (3) years 1.Lake shore warrants that products manufactured by lake shore (the "product") will be free from defects in materials and workmanship for three years from the date of purchaser's physical receipt of the prod...

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    Model 336 temperature controller.

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    Model 336 temperature controller.

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    Model 336 temperature controller 2.6.5  system non-linearity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2.7  pid control   . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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    Model 336 temperature controller chapter 5 advanced operation 5.1  general   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5.2  autotune . ...

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    Model 336 temperature controller chapter 8 service 8.1  general   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  153 8.2  usb troubleshooting  . ...

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    2 c hapter 1: introduction model 336 temperature controller another innovative first from lake shore, the ability to custom label sensor inputs eliminates the guesswork in remembering or determining the location to which a sensor input is associated. As we strive to maintain increasingly demanding w...

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    4 c hapter 1: introduction model 336 temperature controller 1.1.4 configurable display the model 336 offers a bright, graphic liquid crystal display with an led backlight that simultaneously displays up to 8 readings. You can show all 4 loops, or if you need to monitor 1 input, you can display just ...

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    6 c hapter 1: introduction model 336 temperature controller example lake shore sensor temperature nominal resistance/ voltage typical sensor sensitivity 4 measurement resolution: temperature equivalents electronic accuracy: temperature equivalents temperature accuracy including electronic accuracy, ...

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    8 c hapter 1: introduction model 336 temperature controller 1.3.2 sensor input configuration 1.3.3 thermometry thermocouple option model 3060 sensor tempera- ture coeffi- cient input range excitation current display resolution measurement resolution electronic accuracy (at 25 °c) measurement tempera...

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    10 c hapter 1: introduction model 336 temperature controller 1.3.4.2 unpowered analog outputs (outputs 3 and 4) 1.3.5 front panel control type closed loop pid, pid zones, warm up heater mode, manual output or monitor out tuning autotune (one loop at a time), pid, pid zones control stability sensor d...

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    12 c hapter 1: introduction model 336 temperature controller 1.4 safety summary and symbols observe these general safety precautions during all phases of instrument operation, service, and repair. Failure to comply with these precautions or with specific warn- ings elsewhere in this manual violates ...

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    14 c hapter 1: introduction model 336 temperature controller.

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    16 c hapter 2: cooling system design and temperature control model 336 temperature controller 2.2.3 environmental conditions the experimental environment is also important when choosing a sensor. Environ- mental factors such as high vacuum, magnetic field, corrosive chemicals, or even radiation can ...

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    18 c hapter 2: cooling system design and temperature control model 336 temperature controller there are two versions of the curve handler™ application. The fully featured version is a 32-bit microsoft windows™ application that must be installed on a windows™ pc. This version works with the ieee-488 ...

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    20 c hapter 2: cooling system design and temperature control model 336 temperature controller 2.4.7 lead soldering when you solder additional wire to short sensor leads, be careful not to overheat the sensor. A thermal anchor such as a metal wire clamp or alligator clip will anchor the leads and pro...

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    22 c hapter 2: cooling system design and temperature control model 336 temperature controller it is possible to choose a heater value that results in a maximum power greater than the power rating of 50 w for output 2, but doing so can cause the model 336 to work improp- erly. In this situation the m...

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    24 c hapter 2: cooling system design and temperature control model 336 temperature controller the cooling power of most cooling sources also changes with load temperature. This is very important when operating at temperatures near the highest or lowest tem- perature that a system can reach. Nonlinea...

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    26 c hapter 2: cooling system design and temperature control model 336 temperature controller figure 2-2 examples of pid control.

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    28 c hapter 2: cooling system design and temperature control model 336 temperature controller 7. Gradually increase the proportional setting by doubling it each time. At each new setting, allow time for the temperature of the load to stabilize. 8. Repeat step 7 until you reach a setting in which the...

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    30 c hapter 2: cooling system design and temperature control model 336 temperature controller 2.10 zone tuning once the pid tuning parameters have been chosen for a given setpoint, the whole process may have to be done again for other setpoints significantly far away that have different tuning needs...

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    32 c hapter 3: installation model 336 temperature controller always turn off the instrument before making any rear panel connections. This is espe- cially critical when making sensor to instrument connections. 3.4 line input assembly this section describes how to properly connect the model 336 to li...

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    34 c hapter 3: installation model 336 temperature controller 3.5.2 sensor lead cable the sensor lead cable used outside the cooling system can be much different from what is used inside. Between the instrument and vacuum shroud, heat leak is not a concern. In this case, choose cabling to minimize er...

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    36 c hapter 3: installation model 336 temperature controller 3.5.7 lowering measurement noise good instrument hardware setup technique is one of the least expensive ways to reduce measurement noise. The suggestions fall into two categories: (1) do not let noise from the outside enter into the measur...

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    38 c hapter 3: installation model 336 temperature controller remove all insulation, then tighten the screws on the thermocouple wires. Keep the ceramic terminal blocks away from heat sources including sunlight and shield them from fans or room drafts. 3.7.2 thermocouple installation thermocouples ar...

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    40 c hapter 3: installation model 336 temperature controller 3.8.5.1 choosing a power supply d voltage programmable: the power supply must be voltage programmable so that outputs 3 or 4 (control output) can control it. Ideally the supply’s programming input should have a range of 0 to 10 v that corr...

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    42 c hapter 3: installation model 336 temperature controller.

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    44 c hapter 4: operation model 336 temperature controller 4.2 front panel description this section provides a description of the front panel controls and indicators for the model 336. 4.2.1 keypad definitions the keypad is divided into two sections. The direct operation section includes all keys to ...

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    46 c hapter 4: operation model 336 temperature controller display annunciators : include symbols for sensor inputs and their respective tempera- tures and units. 4.2.3 general keypad operation there are five basic keypad operations: direct operation, menu navigation, number entry, alpha-numeric entr...

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    48 c hapter 4: operation model 336 temperature controller 4.3.1.2 all inputs mode all inputs mode provides a limited amount of information about each of the sensor inputs. Similar to the four loop mode, each quadrant of the display is dedicated to one sensor input with the input letter being display...

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    50 c hapter 4: operation model 336 temperature controller d input and units: each available display location has an associated input and units setting. The input parameter determines which sensor will be used as the input of the displayed data. The input can be any of the four sensor inputs, or none...

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    52 c hapter 4: operation model 336 temperature controller 4.4.1 diode sensor input setup diode sensors include the silicon and the gallium aluminum arsenide sensors detailed in table 4-7. Input ranges are selectable to 0–2.5 v or 0–10 v, and standard excitation current is 10 µa. As an alternative to...

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    54 c hapter 4: operation model 336 temperature controller 4.4.6 thermocouple sensor input setup (model 3060 only) when a model 3060 thermocouple option is installed in the model 336, a setting of thermocouple becomes available under the sensor type parameter in the input setup menu. The standard dio...

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    56 c hapter 4: operation model 336 temperature controller 4.4.7.2 temperature coefficient selection capacitance sensors can have both a positive and negative temperature coefficient (slope). They have a positive temperature coefficient at very low temperatures and a negative temperature coefficient ...

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    58 c hapter 4: operation model 336 temperature controller during normal operation, only the curves that share the input type you have selected are displayed. If the curve you wish to select does not appear in the selection sequence make sure the curve format matches the recommended format for the in...

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    60 c hapter 4: operation model 336 temperature controller 4.4.11 input name to increase usability and reduce confusion, the model 336 provides a means of assigning a name to each of the four sensor inputs. The designated input name is used on the front panel display whenever possible to indicate whi...

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    62 c hapter 4: operation model 336 temperature controller example 1: a 50 ) , 30 w heater is connected to output 1. User max current should be set to the smaller of the two or 0.77 a. In this example, the desired 30 w of power is available to the heater. Example 2: a 75 ) , 50 w heater is connected ...

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    64 c hapter 4: operation model 336 temperature controller in closed loop pid mode, the controller will accept user-entered proportional, inte- gral, and derivative parameters to provide 3-term pid control. Manual output can be used during closed loop control to add to the calculated pid control outp...

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    66 c hapter 4: operation model 336 temperature controller 4.5.1.5.4 derivative (d) the derivative parameter (sometimes called rate) is the d part of the pid control equation. The derivative time constant should normally be somewhere between p and 1/i the integral time in seconds, if used at all. As ...

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    68 c hapter 4: operation model 336 temperature controller 4.5.1.5.7 setpoint ramping the model 336 can generate a smooth setpoint ramp when the setpoint units are expressed in temperature. You can set a ramp rate in degrees per minute with a range of 0 to 100 and a resolution of 0.1. Once the rampin...

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    70 c hapter 4: operation model 336 temperature controller 4.5.1.5.9 all off the all off key is provided as a means of shutting down all control outputs with one key. It is equivalent to setting the heater range parameter of all outputs to off. This function is always active even if the keypad is loc...

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    72 c hapter 4: operation model 336 temperature controller.

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    74 c hapter 5: advanced operation model 336 temperature controller menu navigation: autotune q input ( a, b, c, d ) q (autotune p, autotune pi, autotune pid) stage description purpose for stage reason for failure possible solution 0 testing initial conditions determine if autotuning can be initiated...

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    76 c hapter 5: advanced operation model 336 temperature controller menu navigation: zones q output ( 1 or 2 ) q zones q (1 to 10) interface command: zone figure 5-1 record of zone settings heater range a off a low control input a default proportional (0.1–1000) integral (0.1–1000) derivative (0–200)...

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    78 c hapter 5: advanced operation model 336 temperature controller 5.5.2 warm up control the warm up control parameter determines what happens when the control set- point is reached. The options are: d auto-off : once the heater range is set to on, the warm up percentage voltage is applied to the ou...

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    80 c hapter 5: advanced operation model 336 temperature controller 5.7 alarms and relays 5.7.1 alarms each input of the model 336 has high and low alarm capability. Input reading data from any source can be compared to the alarm setpoint values. A reading higher than the high alarm setpoint triggers...

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    82 c hapter 5: advanced operation model 336 temperature controller 5.7.2 relays there are two relays on the model 336 numbered 1 and 2. They are most commonly thought of as alarm relays, butthey may be manually controlled also. Relay assign- ments are configurable as shown in figure 5-6. Two relays ...

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    84 c hapter 5: advanced operation model 336 temperature controller setting resolution is also six digits in sensor units. The curve format parameter defines the range and resolution in sensor units as shown in table 5-3. The sensor type determines the practical setting resolution. Table 5-4 lists re...

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    86 c hapter 5: advanced operation model 336 temperature controller 5.9.1.2 add a new breakpoint pair the last breakpoint of a curve is signified by the first pair that contains a 0 value for both the temperature and sensor portions. Curves are limited to 200 breakpoint pairs, so if 200 pairs already...

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    88 c hapter 5: advanced operation model 336 temperature controller 5.10 softcal™ the model 336 allows you to perform inexpensive sensor calibrations with a set of algorithms called softcal™. The two softcal™ algorithms in the model 336 work with dt-400 series silicon diode sensors and platinum senso...

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    90 c hapter 5: advanced operation model 336 temperature controller 5.10.3 softcal™ with platinum sensors the platinum sensor is a well-accepted temperature standard because of its consis- tent and repeatable temperature response above 30 k. Softcal™ gives platinum sen- sors better accuracy than thei...

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    92 c hapter 5: advanced operation model 336 temperature controller.

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    94 c hapter 6: computer interface operation model 336 temperature controller 6.2.1 changing ieee-488 interface parameters the ieee-488 address must be set from the front panel before communication with the instrument can be established. Menu navigation: interface q enabled q ieee-488 interface q iee...

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    96 c hapter 6: computer interface operation model 336 temperature controller 6.2.4 status system overview the model 336 implements a status system compliant with the ieee-488.2 standard. The status system provides a method of recording and reporting instrument informa- tion and is typically used to ...

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    98 c hapter 6: computer interface operation model 336 temperature controller 6.2.4.4 status byte register the status byte register, typically referred to as the status byte, is a non-latching, read-only register that contains all of the summary bits from the register sets. The status of the summary ...

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    100 c hapter 6: computer interface operation model 336 temperature controller 6.2.5.2 operation event register set the operation event register reports the interface related instrument events listed below. Any or all of these events may be reported in the operation event summary bit through the enab...

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    102 c hapter 6: computer interface operation model 336 temperature controller 6.2.6.2 service request enable register the service request enable register is programmed by the user and determines which summary bits of the status byte may set bit 6 (rqs/mss) to generate a service request. Enable bits ...

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    104 c hapter 6: computer interface operation model 336 temperature controller 6.3 usb interface the model 336 usb interface provides a convenient way to connect to most modern computers, as a usb interface is provided on nearly all new pcs as of the writing of this manual. The usb interface is imple...

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    106 c hapter 6: computer interface operation model 336 temperature controller 3. It is recommended to keep the same default folder. Take note of this folder loca- tion and click next . 4. An “extraction complete” message will be displayed. Click to clear the show extracted files checkbox, and click ...

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    108 c hapter 6: computer interface operation model 336 temperature controller 6.3.4.1 character format a character is the smallest piece of information that can be transmitted by the inter- face. Each character is ten bits long and contains data bits, bits for character timing, and an error detectio...

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    110 c hapter 6: computer interface operation model 336 temperature controller are zeros. This means that the first 24 bits of the static-ip address (192.168.0) represent the subnet, and the last 8 bits (12) represent the device. D gateway address: a gateway is a network traffic routing device that i...

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    112 c hapter 6: computer interface operation model 336 temperature controller the model 336 can be configured to communicate with a primary and a secondary dns server using the primary dns address and the secondary dns address parame- ters. Multiple dns servers are sometimes used for redundancy, but...

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    114 c hapter 6: computer interface operation model 336 temperature controller d module error: the model 336 has lost contact with the ethernet module; this may indicate a damaged ethernet module d acquiring address: the model 336 is attempting to configure the ip address parameters using the enabled...

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    116 c hapter 6: computer interface operation model 336 temperature controller ethernet configuration page: provides a means of reconfiguring the ethernet config- uration parameters of the model 336. Ethernet status page: provides status and statistics related to the current ethernet connection. Util...

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    118 c hapter 6: computer interface operation model 336 temperature controller to store the curve to a user curve location in the model 336: click write to instru- ment. The write curve to instrument dialog box appears. Select a user curve location to write the loaded temperature curve to, and click ...

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    120 c hapter 6: computer interface operation model 336 temperature controller 6.5.4 embedded chart recorder the embedded chart recorder utility is provided to allow users to easily acquire and chart data from the model 336. The chart recorder utility can simultaneously chart and log any combination ...

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    122 c hapter 6: computer interface operation model 336 temperature controller control: provides easy access to the control functions of the instrument. The p, i, d, manual output, setpoint, and heater range settings can be configured here for each control loop on the instrument. The current configur...

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    124 c hapter 6: computer interface operation model 336 temperature controller command function page command function page cls clear interface cmd 125 intsel? Interface select query 135 ese event status enable register cmd 125 intype input type parameter cmd 136 ese? Event status enable register quer...

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    126 c hapter 6: computer interface operation model 336 temperature controller idn? Identification query input idn?[term] returned ,,/, [term] format s[4],s[8],s[7]/s[7],n.N manufacturer id instrument model number instrument serial number option card serial number instrument firmware version example ...

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    128 c hapter 6: computer interface operation model 336 temperature controller alarm? Input alarm parameter query input alarm? [term] format a a–d returned ,,,,,, [term] format n,±nnnnnn,±nnnnnn,+nnnnnn,n,n,n (refer to command for description) alarmst? Input alarm status query input alarmst? [term] f...

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    130 c hapter 6: computer interface operation model 336 temperature controller crdg? Celsius reading query input crdg? [term] format a specifies input to query: a-d (d1–d5 for 3062 option) returned or if all inputs are queried: ,,, format ±nnnnnnn[term] or if all inputs are queried: ±nnnnn,±nnnnn,±nn...

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    132 c hapter 6: computer interface operation model 336 temperature controller dispfld custom mode display field command input dispfld ,,[term] format n,n,n specifies field (display location) to configure: 1–8. Specifies item to display in the field: 0 = none, 1 = input a, 2 = input b, 3 = input c, 4...

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    134 c hapter 6: computer interface operation model 336 temperature controller htrset? Heater setup query input htrset? [term] format n specifies which heater output to query: 1 or 2. Returned ,,,[term] format n,n,+n.Nnn,n htrst? Heater status query input htrst? [term] format n specifies which heater...

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    136 c hapter 6: computer interface operation model 336 temperature controller intype input type parameter command input intype ,,,, tion>, [term] format a,n,n,n,n,n specifies input to configure: a–d (d1–d5 for 3062 option) specifies input sensor type: 0 = disabled 1 = diode 2 = platinum rtd 3 = ntc ...

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    138 c hapter 6: computer interface operation model 336 temperature controller mnmxrst minimum and maximum function reset command input mnmxrst[term] remarks resets the minimum and maximum data for all inputs. Mode remote interface mode command input mode [term] format n 0 = local, 1 = remote, 2 = re...

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    140 c hapter 6: computer interface operation model 336 temperature controller opstr? Operational status register query input opstr? [term] returned [term] format nnn remarks the integers returned represent the sum of the bit weighting of the operational sta- tus bits. These status bits are latched w...

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    142 c hapter 6: computer interface operation model 336 temperature controller rdgst? Input reading status query input rdgst? [term] format a specifies which input to query: a–d (d1–d5 for 3062 option). Returned [term] format nnn remarks the integer returned represents the sum of the bit weighting of...

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    144 c hapter 6: computer interface operation model 336 temperature controller temp? Thermocouple junction temperature query input temp?[term] returned [term] format +nnnnn remarks temperature is in kelvin. This query returns the temperature of the ceramic thermo- couple block used in the room temper...

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    146 c hapter 6: computer interface operation model 336 temperature controller zone control loop zone table parameter command input zone ,,,,, ,, ,,,,[term] format n,nn,+nnnnn, +nnnnn,+nnnnn,+nnnn,+nnnnn, n,n, +nnnn [term] specifies which heater output to configure: 1 or 2. Specifies which zone in th...

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    148 c hapter 7: options and accessories model 336 temperature controller cal-336-data † instrument recalibration with certificate and data. Es-2-20 stycast® epoxy 2850-ft, catalyst 9 (20 packets, 2 g each). Stycast® is a common, highly versa- tile, nonconductive epoxy resin system for cryogenic use....

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    150 c hapter 7: options and accessories model 336 temperature controller 7.6.1 input option card installation the model 336 input option cards are field-installable. You will need a small phillips- head screwdriver and the 5/64-in hex driver. Follow this procedure to install an input option card. To...

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    152 c hapter 7: options and accessories model 336 temperature controller.

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    154 c hapter 8: service model 336 temperature controller 8.3 ieee interface troubleshooting this section provides ieee interface troubleshooting for issues that arise with new installations, old installations, and intermittent lockups. 8.3.1 new installation 1. Check the instrument address. 2. Alway...

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    156 c hapter 8: service model 336 temperature controller 8.7.1 default values the factory defaults can be reset, and the user curves cleared, using the factory reset menu. To access the factory reset menu, press and hold the escape key for 5 s. Once the menu appears, set either reset to defaults or ...

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    158 c hapter 8: service model 336 temperature controller 8.10 rear panel connector definition the sensor input, heater output, terminal block, usb, ethernet, and ieee-488 con- nectors are defined in figure 8-3 through figure 8-8. For thermocouple connector details refer to figure 3-8. figure 8-3  ...

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    160 c hapter 8: service model 336 temperature controller 8.10.1 ieee-488 interface connector connect to the ieee-488 interface connector on the model 336 rear with cables spec- ified in the ieee-488 standard. The cable has 24 conductors with an outer shield. The connectors are 24-way amphenol 57 ser...

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    162 c hapter 8: service model 336 temperature controller 8.11.2 handling electrostatic discharge sensitive components observe all precautions necessary to prevent damage to esds components before attempting installation. Bring the device and everything that contacts it to ground potential by providi...

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    164 c hapter 8: service model 336 temperature controller 8.13 firmware updates this section provides instructions on updating your firmware. It also provides a table of the updates that have been made thus far. 8.13.1 updating the firmware periodically, lake shore provides updates to instrument firm...

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    166 c hapter 8: service model 336 temperature controller.

  • Page 180

    168 appendices model 336 temperature controller °f °c k °f °c k °f °c k -459.67 -273.15 0 -292 -180 93.15 -129.67 -89.82 183.33 -454 -270 3.15 -290 -178.89 94.26 -120 -84.44 188.71 -450 -267.78 5.37 -289.67 -178.71 94.44 -119.67 -84.44 188.89 -449.67 -267.59 5.56 -280 -173.33 99.82 -117.67 -83.15 19...

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    170 appendices model 336 temperature controller liquid helium and liquid nitrogen are potential asphyxiants and can cause rapid suffoca- tion without warning. Store and use in area with adequate ventilation. Do not vent con- tainer in confined spaces. Do not enter confined spaces where gas may be pr...

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    172 appendices model 336 temperature controller breakpoint volts temp (k) breakpoint volts temp (k) breakpoint volts temp (k) 1 0.090570 500.00 26 1.01064 87.0 51 1.19475 20.2 2 0.110239 491.0 27 1.02125 81.0 52 1.24208 17.10 3 0.136555 479.5 28 1.03167 75.0 53 1.26122 15.90 4 0.179181 461.5 29 1.04...

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    174 appendices model 336 temperature controller breakpoint log ) temp (k) breakpoint log ) temp (k) breakpoint log ) temp (k) 1 3.02081 40.0 36 3.05186 13.50 71 3.17838 2.96 2 3.02133 38.8 37 3.05322 13.10 72 3.18540 2.81 3 3.02184 37.7 38 3.05466 12.70 73 3.19253 2.67 4 3.02237 36.6 39 3.05618 12.3...

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    176 appendices model 336 temperature controller break- point mv temp (k) break- point mv temp (k) break- point mv temp (k) break- point mv temp (k) 1 -6.45774 3.15 48 -6.10828 57.4 95 -2.95792 192 142 18.1482 714.5 2 -6.45733 3.68 49 -6.08343 59.4 96 -2.82629 196 143 19.2959 741.5 3 -6.45688 4.2 50 ...

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    178 appendices model 336 temperature controller breakpoint mv temp (k) breakpoint mv temp (k) breakpoint mv temp (k) 1 -6.257510 3.15 56 -5.424100 84.00 111 0.623032 289.00 2 -6.257060 3.56 57 -5.380600 86.50 112 0.843856 294.50 3 -6.256520 4.00 58 -5.336260 89.00 113 1.067190 300.00 4 -6.255810 4.5...

  • Page 192

    180 appendices model 336 temperature controller breakpoint mv temp (k) breakpoint mv temp (k) breakpoint mv temp (k) 1 -5.279520 3.15 35 -3.340820 115.00 69 1.313400 2 -5.272030 3.78 36 -3.253410 119.50 70 1.511140 341.50 3 -5.263500 4.46 37 -3.165360 124.00 71 1.709250 350.50 4 -5.253730 5.20 38 -3...