Emerson Rosemount 8732EM, Reference Manual

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Optional discrete input function (AX option)
Externally powered at 5 - 28VDC, 1.4 - 20mA to activate switch closure to indicate either:
Reset Totalizer A (or B or C) Resets Totalizer A (or B or C) value to zero.
Reset All Totals Resets all totalizer values to zero.
Positive Zero Return (PZR) Forces outputs of the transmitter to zero flow.
Security lockout
Security lockout switch on the electronics board can be set to deactivate all LOI and HART-
based communicator functions to protect configuration variables from unwanted or
accidental change.
LOI lockout
The display can be manually locked to prevent unintentional configuration changes. The
display lock can be activated through a HART communication device, or by holding the UP
arrow for 3 seconds and then following the on-screen instructions. When the display lock is
activated, a lock symbol will appear in the lower right hand corner of the display. To
deactivate the display lock, hold the UP arrow for 3 seconds and follow the on-screen
instructions.
Display auto lock can be configured from the LOI with the following settings: OFF, 1
Minute, or 10 Minutes
Sensor compensation
Rosemount sensors are calibrated in a flow lab at the factory and are assigned a calibration
number. The calibration number must be entered into the transmitter, enabling
interchangeability of sensors without calculations or a compromise in standard accuracy.
Transmitters and other manufacturers’ sensors can be calibrated at known process
conditions or at the Rosemount NIST-Traceable Flow Facility. Transmitters calibrated on
site require a two-step procedure to match a known flow rate. This procedure can be
found in the operations manual.
A.2.4 Performance specifications
System specifications are given using the frequency output and with the unit at reference
conditions.
Accuracy
Includes the combined effects of linearity, hysteresis, and repeatability.
Rosemount 8705-M Sensor
• Standard system accuracy:
- ±0.25% of rate ±1.0 mm/sec from 0.04 to 6 ft/s (0.01 to 2 m/s)
- ±0.25% of rate ±1.5 mm/sec above 6 ft/s (2 m/s)
Product Specifications
Reference manual 191