INSTRUCTION MANUAL
FOR ETR-9200
CONTENTS
Failure of devices, such as the thermocouple-RTD sensor, heater output relay or temperature control can result in
severe damage to a product while in process, melting of the heater or a damaging fire. An over-temperature protec-
tion device must be installed in your process that will remove all power from the heating circuit if the above failure
occurs. We recommend that this device be classified as a safety control and carry FM, U.L. and CSA Listing or
Certification. Failure to install high-limit temperature control protection where a potential hazard exists, could result
in damage to equipment and property, and fatal injury to personnel.
WARNING!
Section 1: INTRODUCTION
This manual contains information for the installation and
operation of the Ogden Model ETR-9200 auto-tuning
micro-processor based controller.
Ease of use is an essential feature on this versatile
controller. Three touch keys are used to select sensor
type, control mode, control parameters, alarm mode,
degree C/F, auto-manual mode, and to lock the para-
meters from the prevention of unauthorized tampering.
Two large 4-digit displays show process and set point
values at a glance. Precise 14 slope sensor lineariza-
tion, self-diagnostic capability, cold junction compensa-
tion and 3-mode PID calculations are automatically exe-
cuted by the single chip microprocessor. The wide
selection of parameters, values, sensor types, set
points, control modes, alarm modes, degrees C/F and
security codes are held in a non-volatile memory and
retained for ten years if the unit is left unpowered.
Batteries are not necessary.
The auto-tuning function determines the correct propor-
tional band, rate and reset values to provide accurate
control with minimal overshoot and temperature oscilla-
tion. This is accomplished without the need for expen-
sive and time consuming procedures for set-up of con-
trol parameters. In case of a power failure or temporary
shutdown, the instrument retains the correct parame-
ters. This instrument also has manual override capabili-
ties that allow the operator to bypass the auto-tuning
parameters. Required fine tuning adjustments can then
be made.
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