Functions relevant to custody transfer
Commissioning Instructions for PTB gas approval Proline Promass 84
42
Hauser
7.41
Service & Analysis
Application
Gas measurement
Function name
No.
Description
Configuration
GAS MODE
9200 Use this function to select the gas mode for gas
measurement:
• OFF
• MODE 1 (for methane or natural gas)
• MODE 2 (for gas in GAS TYPE function)
• ETHYLENE
Options: MODE 1
(factory setting)
GAS TYPE
9201 Use this function to select the gas type for gas mode 2:
AIR, NITROGEN, ARGON, HELIUM, CO2, OXYGEN,
METHANE, AMMONIA, OTHER, HYDROGEN, C2H6,
C3H8, C4H10, CL2, HCL, CO, N2O, NO, H2S, SF6,
C3H6, O3.
Options: METHANE
(factory setting)
SOUND VELOCITY
9202 Use this function to select the sound velocity of the gas
selected in the GAS TYPE function at 0 °C.
"
Caution!
The value for the sound velocity must be calculated at 0
°C and input in m/s.
User input: 5-digit
floating point number,
incl. sign
Factory setting:
depending on the
option selected in the
gas type function.
TEMPERATURE
COEFFICIENT OF
SOUND VELOCITY
9203 Use this function to enter the temperature coefficient
for the sound velocity of the gas selected in the GAS
TYPE function.
"
Caution!
The value for the temperature coefficient of the sound
velocity must be input in 1/K.
User input: 5-digit
floating point number,
incl. sign
Factory setting:
depending on the
option selected in the
gas type function.
PRESSURE MODE
9204 Use this function to select the setting for pressure
measuring mode within ethylene gas measurement.
!
Note!
• This function is not available unless the "ETHYLENE"
setting was selected in the GAS MODE function .
• The option selected is also applied to the PRESSURE
MODE function (6500) and vice versa. This means
that there is no need to switch to another block
within the function matrix when configuring
ethylene gas measurement.
• The "MEASURED" option is available only if the
measuring device has a current input.
Options:
OFF
No correction
FIX
The pressure is known
and is constant within
narrow limits. It is
input in the PRESSURE
FUNCTION.
MEASURED
The pressure is
measured externally
and read in via the
current input.
PRESSURE
9204 Use this function to enter the actual process pressure
during measurement.
!
Note!
• This function is not available unless "ETHYLENE"
was selected in the GAS MODE function and "FIX"
was selected in the PRESSURE MODE function.
• The value entered here is also applied to the
PRESSURE function (6501) and vice versa. This
means that there is no need to switch to another
block within the function matrix when configuring
ethylene gas measurement.
• The appropriate unit is taken from the function group
SYSTEM UNITS (see the relevant operating
instructions ).
User input: –1,0133 to
+99999 barg
5-digit floating point
number, incl. sign
Содержание Proline Promass 84
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