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P a r r I n s t r u m e n t C o m p a n y
4838 Temperature Controller
Model 4838 Controller
For Non-Stirred Vessels, PID, Ramp and Soak, Digital
Communications and Software
Order No.
Voltage, AC
4838EB
115
4838EE
230
Expansion Module
-PDM
Pressure Display Module
-HTM
High Temperature Cut Off Module
-ETLM
External Temperature Limit Module
Connection Cables
Order No.
Description
A1925E4
RS485 to USB Connection Cable, 30 ft.
Parr 4838 Temperature Controller shown with optional High Temperature
Cut Off Module.
A composite identification number to be
used when ordering a 4838 Temperature
Controller can be developed by combining indi-
vidual symbols from the separate sections.
Example: A 4838 Temperature Controller,
115V electrical, with optional Pressure Display
Module would be listed as:
No. 4838EB-PDM
A.
B.
Model
Modules
4848EB -PDM
A
B
C
Series 4838 Ordering Guide
T
he 4838 Temperature Controller is designed
to control the temperature in our line of
non-stirred pressure vessels. No provision is
made for the current or future expansion to
control motor stirring speeds or actuate cool-
ing water. The controller contains the same
Temperature Control Module used in the 4848
Controller and provides identical control and
communications capabilities. A high low heater
feature as well as a lock out relay and reset for
over temperature protection are also included.
The 4838 Controllers can be enhanced with the
addition of either a Pressure Display Module or
a High Temperature Cut Off Module. An External
Temperature Limit Module can be substituted for
the High Temperature Cut Off Module.
Features found on the 4838 Temperature
Controller are:
• PID programming for precise temperature
control and minimum overshoot
• Ramp and soak programming
• Separate heating and cooling control loops
• Full or half power heater option
• Lockout relay and reset for over temperature
protection.
