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MODEL 3081 pH/ORP SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
1.1 Features
1.2 Accessories
1.3 Specifications - General for Model 3081 pH/ORP
1.4 Specifications - pH
1.5 Specifications - ORP
1.6 Ordering Information
• CHANGING FROM pH TO ORP operation takes only seconds.
• REMOTE COMMUNICATION IS SIMPLE; use the hand-held infrared remote controller or any
HART® compatible device.
• LARGE TWO LINE DISPLAY shows pH or ORP, temperature, and output signal.
• SIMPLE, INTUITIVE MENUS make programming and calibrating easy.
• AUTOMATIC TWO-POINT BUFFER CALIBRATION reduces errors.
• SOLUTION TEMPERATURE COMPENSATION converts measured pH to the pH at 25°C.
• CONTINUOUS DIAGNOSTICS monitor sensor performance and warn the user of failure (FAULT)
or approaching failure (WARNING).
• ROBUST NEMA 4X ENCLOSURE protects the transmitter from harsh plant environments.
• INTRINSICALLY SAFE DESIGN allows the transmitter to be used in hazardous environments (with
appropriate safety barriers).
• NON-VOLATILE EEPROM MEMORY retains program settings and calibration data during power
failures.
1.1 FEATURES
APPLICATION: The Model 3081pH/ORP Transmitter
with the appropriate pH or ORP sensor measures pH
between 0 and 14 and ORP between -1400 and 1400
millivolts. Converting the transmitter from a pH instru-
ment to an ORP instrument takes only seconds.
REMOTE COMMUNICATIONS: Remote communica-
tions with the Model 3081 pH/ORP transmitter is easy.
The hand-held, push button infrared remote controller
works from as far away as six feet. The transmitter also
belongs to the Rosemount SMART FAMILY®, so it
works with the Model 275 HART® hand-held communi-
cator or with any host that supports the HART protocol.
DISPLAY: The 0.8-inch high LCD main display means
pH and ORP values are easy to read even at a distance.
Secondary variables, temperature and current output,
appear in a 0.3 inch high display.
MENUS: Menu formats for calibration and programming
are simple and intuitive. Prompts guide the user through
the basic procedures. Diagnostic and error messages
appear in plain language. There are no annoying codes
to look up.