EasyManuals Logo

Parr Instrument 4838 User Manual

Parr Instrument 4838
26 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #13 background imageLoading...
Page #13 background image
4838 Reactor Controller
13
A sample program to heat to 200 °C as fast a pos-
sible, hold for 2-hrs, and come back down as quickly
as possible:
Variable Value Meaning
ptrn 00 Pattern 0
SP00 200 Setpoint of 200 °C (first step is
a soak by default)
tI00 00:00 Move setpoint to 200 °C im-
mediately
SP01 200 Setpoint of 200 °C
tI01 01:00 Ramp from 200°C to 200 °C
over 1-hrs *
SP02 200 Setpoint of 200 °C
tI02 02:00 Ramp from 200C to 200 °C over
2-hrs **
SP03 25 Setpoint of 25 °C
tI03 00:00 Ramp to setpoint immediate-
ly***
SP04 25 Setpoint of 25 °C
tI04 00:00
SP05 25 Setpoint of 25 °C
tI05 00:00
SP06 25 Setpoint of 25 °C
tI06 00:00
SP07 25 Setpoint of 25 °C
tI07 00:00
PSy0 3 Execute steps 0-3 only****
CyC0 0 Do not re-cycle program
Lin0 off Do not execute another pro-
gram upon completion of this
program
* The physical system will take some time to go from
room temp to 200 °C. Step 01 is presented as a “heat
up” step. The time value in this step should be ad-
justed after the fi rst run is complete and the operator
knows the expected heat up time.
** It is useful to keep this step 02 separate from step
01 so you can adjust step 01 to match the heat up
time.
*** The time is zero, making this a step function in-
stead of a ramp.
**** Steps 4-7 are not executed here.
Appendix: sample programs
A sample program to ramp from 25 °C to 250 °C in
2-hrs:
Variable Value Meaning
ptrn 00 Pattern 0
SP00 25 Setpoint of 25 ºC (first step is a
soak by default)
tI00 00:01 Hold for 1-min
SP01 250 Setpoint of 250 °C
tI01 02:00 Ramp to setpoint in 2 hrs
SP02 250 Setpoint of 250 °C
tI02 00:40 Ramp to setpoint in 40-min*
SP03 25 Setpoint of 250 °C
tI03 00:00 Ramp to setpoint immediately**
SP04 25 Setpoint of 25 °C
tI04 00:00
SP05 25 Setpoint of 25 °C
tI05 00:00
SP06 25 Setpoint of 25 °C
tI06 00:00
SP07 25 Setpoint of 25 °C
tI07 00:00
PSy0 3 Execute steps 0-3 only***
CyC0 0 Do not re-cycle program
Lin0 off Do not execute another program
upon completion
* The beginning and fi nal setpoint are equal, making
this a soak step.
** The time is zero, making this a step function in-
stead of a ramp.
*** Steps 4-7 are not executed here.
**** The SP_0 vaue must be higher than the initial
temperature (PV) of the reactor or the program will
not initiate correctly.

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Parr Instrument 4838 and is the answer not in the manual?

Parr Instrument 4838 Specifications

General IconGeneral
BrandParr Instrument
Model4838
CategoryController
LanguageEnglish

Related product manuals