RIA15
HART
®
communication
Endress+Hauser 57
15.4 Supported units
The process display unit can be configured in such a way that the unit code which is sent
from the slave in response to the universal command no. 3, is displayed as text, as listed in
the following table (HCF-SPEC 183).
However, since the field available for the unit is limited in the process indicator to a 5-
digit, 14-segment display, it is not possible to display all units completely. Therefore, some
units are displayed as unit codes in the form of UCxxx, where xxx is the unit code number.
In addition, the operating parameter TEXT can be used to create and display an individual
unit text.
Unit code Description Display text
1 Inches of water at 68 °F inH2O
2 Inches of mercury at 0 °C inHG
3 Feet of water at 68 °F FTH2O
4 Millimeters of water at 68 °F mmH2O
5 Millmeters of mercury at 0 °C mmHG
6 Pounds per square inch PSI
7 Bar BAR
8 Millibars mBAR
9 Grams per square centimeter g/cm2
10 Kilograms per square centimeter UC010
11 Pascals Pa
12 Kilopascals kPa
13 Torr TORR
14 Atmospheres ATM
15 Cubic feet per minute UC015
16 Gallons per minute UC016
17 Liters per minute l/min
18 Imperial gallons per minute UC018
19 Cubic meters per hour m3/h
20 Feet per second FT/S
21 Meters per second m/S
22 Gallons per second gal/S
23 Million gallons per day MGD
24 Liters per second l/S
25 Million liters per day MLD
26 Cubic feet per second FT3/S
27 Cubic feet per day FT3/d
28 Cubic meters per second m3/S
29 Cubic meters per day m3/d
30 Imperial gallons per hour UC030
31 Imperial gallons per day UC031
32 Degrees Celsius °C
33 Degrees Fahrenheit °F
34 Degrees Rankine °R
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