User guide

I-E67-84-1B February,2002 2-1
SECTION 2 - ANALYZER FUNCTIONALITY AND
OPERATOR INTERFACE CONTROLS
INTRODUCTION
The beginning of this section contains an
overview of the TB84PH pH/ORP/pION Advantage
Series analyzer functionality and important
information for configuration personnel. The
latter part of this section discusses the
operator interface controls. It includes
descriptions of the analyzer modes and
faceplate controls.
ANALYZER OVERVIEW
The TB84PH Advantage Series analyzer provides
two analog output signals that can be
configured to be proportional to either the
output of any electrochemical sensor having a
DC voltage output between -2000 and +2000 mV
and/or a 3k Balco or Pt100 RTD. This includes
sensors requiring electrometer type detectors
such as pH, ORP, and specific ion (i.e., pION)
sensors. In addition to the two analog
outputs, any of the three integral relay
outputs can be configured as a high or low
setpoint controller, cycle-timer controller,
diagnostic alarm, or cleaner controller. In
this manner, the TB84PH Advantage Series
analyzer provides a means by which to monitor
and control the pH, ORP, pION, or Ion
Concentration of a process fluid.
This analyzer is equipped with internal
diagnostic capabilities allowing for the
detection of any potential problems with the
electronics and operation of firmware.
Diagnostic capability also includes the
detection of sensor integrity such as pH glass
electrode impedance, reference electrode
impedance, ground-loop detection, open and
shorted cabling, process variables out of
range, and incorrect calibration values.