Emerson NGA2000 Reference Manual page 119

NGA2000 Reference
TARGETMETHOD
Direction
Binding
Type
Value range
Units
Description
Usage
See also
TEMP_IS
Direction
Binding
Type
Value range
Units
Description
Usage
See also
TEMP_WAS
Direction
Binding
Type
Value range
Units
Description
Usage
See also
Rosemount Analytical Inc. A Division of Emerson Process Management
Bidirectional
None
String
31 characters
None
Unused.
This was supposed to be the desired parameter set into which to copy the current
parameter set. This feature has not been implemented in version 2.2, and in fact has
been overtaken by the PC interface developments. No internal use is made of this
variable.
METHODA etc.
Output
None
NDIR and PMD: 2-element floating point array; FID and CLD: 3-element floating point
array; HFID: 5-element floating point array
See below.
C
Internal temperature measurements.
Case temperature (NDIR, PMD, FID), Converter temperature (CLD).
Detector temperature (NDIR, PMD), Flame temperature (FID), Sensor block
temperature (CLD).
Peltier device temperature (CLD), Preamp temperature (FID).
Sample temperature (HFID).
Oven temperature (HFID).
Real time temperature measurements. The meaning varies with each analyzer, see
above. In the NDIR and PMD the detector temperature is critical, at 61.5°C. In the
CLD, the converter is set to an optimum temperature based on a converter efficiency
test, typically about 350°C. The sensor block in the CLD is critical at 51.5°C, and the
Peltier temperature is also critical at 0°C. The FID flame temperature has to be above
115°C for the flame to be considered to be on, and the preamp temperature is less
critical, although it is normally about 55°C.
TEMP_WAS
Output
None
NDIR and PMD: 2-element floating point array; FID and CLD: 3-element floating-z
point array; HFID: 5-element floating point array
See below.
C
Historical value of internal temperature measurements:
Case temperature (NDIR, PMD, FID), Converter temperature (CLD)
Detector temperature (NDIR, PMD), Flame temperature (CLD).
Peltier device temperature (CLD), Preamp temperature FID).
Sample temperature (HFID).
Oven temperature (HFID).
These are the values of the internal temperature readings at manufacturing check out
time.
TEMP_IS
Reference Manual
748384-C
September 2003
Analyzer Variables 2-57