Front Panel Curve Entry Operations; Edit Curve - Lakeshore 336 User Manual

84 c 5: Advanced Operation
HAPTER
5.9 Front Panel
Curve Entry
Operations

5.9.1 Edit Curve

Model 336 Temperature Controller
Typical Lake Shore
Sensor Type
Model
Silicon Diode DT-670
GaAlAs Diode TG-120
Platinum 100 PT-100
Platinum 1000 –*
Rhodium-Iron RF-800
Carbon-Glass CGR-1-1000
Cernox™ CX-1050
Germanium GR-200A-100
Rox™ RX-102A
Type K 9006-005
Type E 9006-003
Type T 9006-007
Au-Fe 0.03% –*
Au-Fe 0.07% 9006-001
*Not offered by Lake Shore
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 recommended sen-
sor units resolutions.
Enter the breakpoints with the sensor units value increasing as point number
increases. There should not be any breakpoint locations left blank in the middle of a
curve. The search routine in the Model 336 interprets a blank breakpoint as the end of
the curve.
There are five operations associated with front panel curve entry: Edit curve, View
Curve, Erase Curve, Copy Curve, and SoftCal; as detailed below.
Operation
Edit Curve allows you to edit curves at any user curve location. Stan-
Edit Curve
dard curves cannot be changed.
View Curve allows you to view any curve at any curve location. No
View Curve
curves can be changed.
Erase Curve allows you to delete a curve from any user curve location.
Erase Curve
Standard curves cannot be erased.
Copy Curve allows you to copy a curve from any location to any user
Copy Curve
curve location. Curves cannot be copied into standard curve locations.
SoftCal allows you to create a new temperature curve from a standard
SoftCal
curve and known data points entered by the user.
TABLE 5-5 Front panel curve entry operations
Menu Navigation:
Curve EntryQ(Edit Curve, View Curve, Erase Curve, Copy Curve, SoftCal)
Use the Edit Curve operation to enter a new curve or edit an existing user curve. Only
user curves (21 to 59) can be edited. Entering the identification parameters associ-
ated with the curve is as important as entering the breakpoints. Curve header param-
eters are listed in TABLE 5-3. Typical curve parameters for common sensors are listed
in TABLE 5-4. Read this section completely and gather all necessary data before
beginning the process.
If the curve you wish to enter has similar parameters as an existing curve, first copy the
similar curve (as described in Section 5.2.4) to a new location, then edit the curve to the
desired parameters.
Format Limit (K)
V/K 475
V/K 325
800
)/K
800
)/K
325
)/K
log )/K 325
log )/K 325
log )/K 325
log )/K 40
mV/K 1500
mV/K 930
mV/K 673
mV/K 500
mV/K 610
TABLE 5-4 Typical curve parameters
Description
Temperature Typical Sensor
Coefficient Resolution
Negative 0.00001 V
Negative 0.00001 V
Positive 0.001 )
Positive 0.01 )
Positive 0.001 )
Negative 0.00001 log )
Negative 0.00001 log )
Negative 0.00001 log )
Negative 0.00001 log )
Positive 0.0001 mV
Positive 0.0001 mV
Positive 0.0001 mV
Positive 0.0001 mV
Positive 0.0001 (mV)
Refer to section:
5.9.1
5.9.2
5.9.3
5.9.4
5.10