Emerson Process Management 3422 User Manual
Reference, Installation, and Operations Manual
Section 2: Product overview
3-9000-743 Rev S
June 2013
Status Indicators
29
Analog output(s)
A 4-20 mA analog output is provided via the Option Board. The analog output is software
configurable (similar to the frequency outputs) and can represent volumetric flow rate, gas
velocity, sound velocity, energy rate, or mass rate (
configurable (similar to the frequency outputs) and can represent volumetric flow rate, gas
velocity, sound velocity, energy rate, or mass rate (
Two 4-20 mA independently configurable analog outputs are available with the Series 100 Plus
Board installed.
Board installed.
The analog output zero scale offset error is within ±0.1% of full scale and gain error is within
±0.2% of full scale. The total output drift is within ±50 ppm of full scale per °C.
±0.2% of full scale. The total output drift is within ±50 ppm of full scale per °C.
2.5.3
Status Indicators
The meter has several light-emitting diode (LED) status indicators on both the CPU Board and
Option Board for general status and communication status indication.
Option Board for general status and communication status indication.
CPU Board General Status Indicators
The meter indicates the status of the metrology mode and the status of the data transfer from
the Acquisition Board to the CPU Board via LEDs located on the CPU Board (
the Acquisition Board to the CPU Board via LEDs located on the CPU Board (
). Additional LEDs are included for future use.
general status indicators.
AI-1 and AI-2 are electronically isolated, independently configurable to operate in either sink
or source mode and an additional 150 Ohms Loop impedance. Can be connected to HART®
enabled transmitter.
or source mode and an additional 150 Ohms Loop impedance. Can be connected to HART®
enabled transmitter.