The 870ITPH Intelligent Transmitter converts pH, ORP, or Ion Selective Electrode measurements to a 4 to 20 mA and/or digital output signal depending on the model selected and the
configuration implemented.
The analog only output version (Model 870ITPH-A) supports configuration, calibration, and
diagnostic troubleshooting locally at the front panel. The transmitter has one 4 – 20 mA dc
output which can be software configured (connected) to temperature compensated measurement, uncompensated (absolute) measurement, or temperature.
The digital output version (Model 870ITPH-F) supports configuration, calibration, and
diagnostic troubleshooting locally at the front panel, via the PC10 software anywhere on the
signal leads, or from any Foxboro I/A Series Workstation via an Intelligent Transmitter Fieldbus Module. The digital output version supports either digital only communication or a
hybrid 4-20 mA dc/digital communication as configured. When operating in either of these
modes, the transmitter continuously outputs three digital measurement values: temperature
compensated measurement, uncompensated (absolute) measurement, and temperature. In the
4 – 20 mA mode, you may assign the output to any one of the three measurement parameters.
Quick Start
The purpose of this section is to:
♦ Help you to wire your transmitter.
♦ Familiarize you with the instrument configuration as received from the factory.
♦ Assist you in verifying that your transmitter is in calibration.
♦ Explain normal operation in Measure Mode.