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4838 Reactor Controller

6

User’s Responsibility

All  Reactors  and  Pressure Vessels  are  designed 
and manufactured with great care to assure safe 
operation when used within their prescribed tem-
perature and pressure limits.  

But… the basic responsibility for safety when us-
ing this equipment rests entirely with the user; who 
must:

1.  Select a reactor or pressure vessel that has the 

capability, pressure rating, corrosion resistance, 
and design features that are suitable for its 
intended use. 

y

n

a

p

m

o

C

 

 engineers will be glad to dis-

cuss available equipment and material options 
with prospective users, but the fi nal responsi-
bility for selecting a reactor or pressure vessel 
that will perform to the user’s satisfaction in any 
particular reaction or test must rest with the user 

In exercising the responsibility for the selection 
of pressure equipment, the prospective user 
is often faced with the choice between over or 
under-designed equipment.  The hazards intro-
duced by under-designed pressure vessels are 
readily apparent, but the penalties that must be 
paid for over-designed apparatus are often over-
looked.    Recognizing  these  criteria,  reac-
tors and pressure vessels are offered in several 
different styles, each designed for convenient 
use in daily operation within certain temperature 
and pressure limits, using gaskets, closures, and 
other elements carefully selected for safe opera-
tion within the limits specifi ed for that design.  
But in order to preserve the validity of these de-
signs, all temperature and pressure limits must 
be observed, and no attempt should be made to 
increase these limits by making alterations or by 
substituting components which are not recom-
mended 

by 

Company.

2.  Install and operate the equipment within a 

suitable barricade, if required, with appropriate 
safety accessories and in full compliance with 
local safety codes and rules.

 

All  standard  pressure  vessels  are  provided 

with either suitable relief device or a means to 
attach one (typically in the form of a plugged 
opening).  When a pressure  vessel is delivered 
without a pressure venting device, it is the cus-
tomer’s responsibility to provide pressure relief 
in order to protect the operator and the equip-
ment from destructive high pressures.  If you 
need more information or need help in selecting 
a  proper  relief  device,  please  contact 
Company.

3.  Establish training procedures to ensure that any 

person handling the equipment knows how to 
use it properly.

4.  Maintain the equipment in good condition and 

establish procedures for periodic testing to be 
sure the vessel remains structurally sound.

Unpack Carefully

Unpack the equipment carefully and check all the 
parts against the packing list.  If shipping damage 
is discovered, report it immediately to the deliver-
ing carriers. Examine the components closely for 
any loose parts or shipping damage and be sure to 
check all layers of packing materials thoroughly so 
as not to overlook any parts which might otherwise 
be discarded.

Summary of Contents for 4838

Page 1: ...4838 Reactor Controller Operating Instruction Manual...

Page 2: ...ry Switches and Indicators 8 Protective Fuses and Relays 8 High Limit Reset 9 Access to the Controller Cabinet 9 Fuses 9 Instructions for the 4838 Reactor Controller Temperature Control Module 10 Comm...

Page 3: ...h of these controllers and describe the several optional control modules which can be added to these ex pandable units The users should study the instruc tions carefully before using any of these cont...

Page 4: ...4838 Controller There are no user serviceable parts inside the prod uct other than what is speci cally called out and discussed in this manual Advanced troubleshooting instructions beyond the scope of...

Page 5: ...l 4838 Controllers operate with aType J Iron Constantan thermocouple The total resistance of the thermo couple and the lead wires should not exceed 100 ohms If the resistance of the thermocouple circu...

Page 6: ...pera tion within the limits speci ed for that design But in order to preserve the validity of these de signs all temperature and pressure limits must be observed and no attempt should be made to incre...

Page 7: ...troller will not be affected by radiant heat Connections Labeled connections are provided on the rear panel of the controller Heating Only The heating output connector is to be used only with Company...

Page 8: ...When the light comes on the user must nd the source of the problem correct it and then manually reset the system using the high limit reset button on the front of the controller The Main Power Switch...

Page 9: ...imit setting This must be manually reset before heating can occur again On Model 4838 Controllers the high temperature limit is preset at the factory to 375 C for most sys tems On these controllers an...

Page 10: ...the value of the setpoint by adjust ing the heater output The setpoint may be adjusted by doing the following 1 Press the up or down arrow until the lower display shows the desired setpoint The lower...

Page 11: ...p and Soak The 4838 Controller has a programming feature which allows more exibility when compared to set point control Rather than controlling temperature to a single set point a ramp and soak progra...

Page 12: ...set key to solidify the change 11 Press set to return to the main screen Note that the lower display of the main screen has changed to show the program step Note The program will attempt to hold the...

Page 13: ...r 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...

Page 14: ...involving reactants corrosive to stainless steel the transducer body can be replaced with an isolator of special alloys which will keep the reactants away from the transducer Users should consult wit...

Page 15: ...As an added safety feature there is also a second ary alarm which will trip the High Limit Reset when breached This secondary alarm provides a redun dant high temperature safety cut off which will sh...

Page 16: ...The soft ware is located on the CD at software _ _ _ Com exe 6 Once copied to the PC open the _ _ _ Com exe le No installation is necessary 7 At the main _ _ _ Com program screen select protocol set P...

Page 17: ...se address 3 and an HTM ETLM will use ad dress 4 5 Click the Save button and save a REC le to an appropriate place on the PC When the chart is generated it will write to this le 6 When you return to t...

Page 18: ...Out1 read only Heater output If using a type J or type K thermocouple SP 0 If using an RTD SP 1 Press and hold down SET for 5 sec Operation Mode Select type value Comment InPt J Input type tPUn C Temp...

Page 19: ...ol mode ON OFF MANUAL PID and PID PROG S HC Heat Heat Cool control ALA1 2 Alarm operates when PV value is higher than SV Value ALH setting SALA OFF System alarm CoSH ON Communication write function th...

Page 20: ...nge tP L 0 Lower limit temperature range CTRL ON OFF Control mode ON OFF MANUAL PID and PID PROG S HC Heat Heat Cool control ALA1 6 Alarm operates when PV value is higher than AL1H value SALA OFF Syst...

Page 21: ...ontrol mode Select heating cooling control or dual loop output control Alarm 1 mode setting Alarm 2 mode setting Only available on PrimaryTemperature Controller Alarm 3 mode setting Only available on...

Page 22: ...function is enabled Lower limit alarm 1 This parameter is available only when ALA1 function is enabled Upper limit alarm 2 This parameter is available only when ALA2 function is enabled Lower limit a...

Page 23: ...control mode or Heating and Cooling control cycle Available in PID control mode Control cycle setting of 2nd output group Available in PID control and Dual Loop output control mode P value of 1st 2nd...

Page 24: ...tension wire type J 25 ft A470E6 Thermocouple extension wire type J 30 ft A470E9 Thermocouple extension wire type J 35 ft A470E10 Thermocouple extension wire type J 40 ft A472E4 Thermocouple type J 5...

Page 25: ...s 30 ft covered A1905E10 Pressure harness 35 ft covered A1905E11 Pressure harness 40 ft covered A1906EP02 Transducer 200 psi A1906EP05 Transducer 500 psi A1906EP10 Transducer 1000 psi A1906EP20 Transd...

Page 26: ...ft A470E10 Thermocouple extension wire 40 ft A472E Thermocouple type J 7 1 2 length A472E2 Thermocouple type J 9 1 2 length A472E3 Thermocouple type J 11 1 2 length A472E4 Thermocouple type J 5 1 2 le...

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