Product/Service

Model 5081 Two-Wire Transmitter: pH/ORP, Conductivity, Oxygen, Ozone or Chlorine

Source: Emerson

The Model 5081 family of transmitters can be used to measure pH, ORP, conductivity (using either contacting or toroidal sensors), resistivity, oxygen (ppm and ppb level), free chlorine, total chlorine, and ozone in a variety of process liquids. The 5081 is compatible with most Rosemount sensors

The Model 5081 family of transmitters can be used to measure pH, ORP, conductivity (using either contacting or toroidal sensors), resistivity, oxygen (ppm and ppb level), free chlorine, total chlorine, and ozone in a variety of process liquids. The 5081 is compatible with most Rosemount sensors. See the Specification sections for details.

The transmitter has a rugged, weatherproof, corrosion-resistant enclosure (NEMA 4X and IP65) of epoxy-painted aluminum. The enclosure also meets NEMA 7B explosion-proof standards.

The transmitter has a two-line seven-segment display. The main measurement appears in 0.8" (20 mm) high numerals. The secondary measurement, temperature (and pH if free chlorine is being measured), appears in 0.3" (7 mm) high digits.

Two digital communication protocols are available: HART (model option -HT) and FOUNDATION fieldbus (model option -FF). Digital communications allows access to AMS (Asset Management Solutions). Use AMS to set up and configure the transmitter, read process variables, and troubleshoot problems from a personal computer or host anywhere in the plant.

A handheld infrared remote controller or the HART Model 275 communicator can also be used for programming and calibrating the transmitter. The remote controller works from as far away as six feet.

 

Model 5081 Family of Two-Wire Transmitters
Model 5081–A Amperometric Transmitter
• MEASURES dissolved oxygen (ppm and ppb level), free chlorine, total chlorine, and ozone
• SECOND INPUT FOR A pH SENSOR ALLOWS AUTOMATIC pH CORRECTION for free chlorine measurement. No expensive, messy reagents needed
• AUTOMATIC BUFFER RECOGNITON FOR pH CALIBRATION
Model 5081–P pH/ORP Transmitter
• CHANGING FROM pH to ORP operation takes only seconds
• 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)
Model 5081–C Contacting Conductivity Transmitter
• MEASURES CONDUCTIVITY, RESISTIVITY, OR CUSTOM CURVE VARIABLE
• AUTOMATIC TC RECOGNITION simplifies start up
• AUTOMATIC/MANUAL TEMPERATURE COMPENSATION ensures accurate monitoring and control
• AUTOMATIC COMPENSATION FOR SENSOR CABLE RESISTANCE improves accuracy of high conductivity/ low resistivty measurements *
• BUILT-IN TEMPERATURE COMPENSATION ALGORITHMS include straight slope, ultrapure water, cation conductivity, and no compensation
Model 5081–T Toroidal Conductivity Transmitter
• MEASURES CONDUCTIVITY, PERCENT CONCENTRATION, OR CUSTOM CURVE VARIABLE
• AUTOMATIC TC RECOGNITION simplifies start up
• AUTOMATIC/MANUAL TEMPERATURE COMPENSATION ensures accurate monitoring and control
• BUILT-IN CONCENTRATION CURVES for 0-15% NaOH, 0-16% HCl, 0-30% and 95-99.99% H2SO4
• PROGRAMMABLE REFERENCE TEMPERATURE enables temperature compensation to temperatures other than 25 degrees Celsius
• AUTOMATIC COMPENSATION FOR SENSOR CABLE RESISTANCE improves accuracy of high conductivity measurements *

 

  • CHOICE OF MEASUREMENT: pH, ORP, Contacting or Toroidal Conductivity, Dissolved Oxygen (ppm & ppb), Free Chlorine, Total Chlorine, Ozone
  • CHOICE OF COMMUNICATION PROTOCOL: HART or FOUNDATION fieldbus
  • LARGE, EASY-TO-READ two-line display shows the process measurement and temperature
  • SIMPLE MENU STRUCTURE
  • ROBUST NEMA 4X and NEMA 7B ENCLOSURE
  • INTRINSICALLY SAFE DESIGN allows the transmitter to be used in hazardous environments (with appropriate safety barriers)
  • NON-VOLATILE MEMORY retains program settings and calibration data during power failures