Endress+Hauser Proline Prowirl 73 - VALUE, DENSITY VALUE and EXPANSION

Proline Prowirl 73 Description of device functions
Endress+Hauser 149
NATURAL GAS
EQUATION
Prerequisite
The function is only available if NATURAL GAS was selected in the SELECT FLUID
function (ä 143).
If you want to change the fluid selected, we recommend that you only do so via the
Commissioning Quick Setup (ä 51). All the relevant parameters can be adapted to
the new fluid in the Commissioning Quick Setup.
Description
For selecting the standard to be used to calculate the mass flow of the natural gas.
Options
NATURAL GAS AGA NX-19
NATURAL GAS AGA8-DC92
NATURAL GAS ISO 12213-2
NATURAL GAS AGA8 Gross Method 1
NATURAL GAS SGERG-88
Factory setting
NATURAL GAS AGA NX-19
ERROR 
TEMPERATURE
Description
Use this function to enter a temperature value for temperature measurement failure in
the DSC sensor.
If temperature measurement fails, the measuring device continues working with the
temperature value entered here.
The appropriate unit is taken from the UNIT TEMPERATURE function (ä 102).
User input
5-digit floating-point number
Factory setting
20 °C
TEMPERATURE VALUE Prerequisite
The function is only available if USER DEFINED LIQUID was selected in the SELECT
FLUID function (ä 143).
Description
Use this function to enter the fluid temperature for the fluid density entered in the
DENSITY VALUE function (ä 150) to calculate the operating density of user-defined
liquids (for formula for calculation, see SELECT FLUID function).
• The appropriate unit is taken from the UNIT TEMPERATURE function (ä 102).
• We recommend you reset the totalizer if the value in this function is changed.
• A table with sample values for the TEMPERATURE VALUE, DENSITY VALUE and
EXPANSION COEFFICIENT functions is available on ä 158.
!
Note!
This setting does not change the permitted temperature range of the measuring system.
Pay attention to the temperature application limits specified in the product specifications
(ä 84).
User input
5-digit floating-point number
Factory setting
293.15 K (20 °C)
Function description, FLOW COMPUTER group