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II. GENERAL INTRODUCTION
The Jenco Model 6312DT (DOandTemperature) system, is a
rugged microprocessor based instrument assembled in a
watertight ¼DINcase, designed for use in laboratories and
process control applications.
The model 6312DT microprocessor allows the user to easily
recalibrate the parameters for the probes. The DO system can do
single or dual point calibration, regardless of which dissolved
oxygen display you use. The microprocessor also performs a self-
diagnostic routine every time you turn on the unit providing you
with basic information about the stability of the instrument.
The system simultaneously displays DO, Temperature, relay status
and current output in one LCD graphic screen. The LCD also
includes a backlight for badly lit environments. This system uses
a “polygraphic clark” membrane for the DO and a precise
thermistor for temperature, providing you with accurate readings
for all your measurements.
The model 6312DT is equipped with three programmable high or
low relays for DO and one programmable high or low relay for
temperature; all relays are hysteresis driven. The system also has a
isolated 4-20mA analog output for DO & temperature each, offset
and span configurable for the DO & temperature display.
The model 6312DT comes with a RS485 interface which can easily
let the user log all data with an IBM©PC/AT compatible
computer. For advanced users, the model 6312DT may also be
remotely controlled from main display mode to all
calibration/setting modes.
