Teledyne 9110E - Nitrogen Oxides Analyzer - Manual (Page 105)

Model 9110E Instruction Manual Operating Instructions
M9110E Rev B 91
Property Description Default Setting Range
channel values to the RS-232 ports.
COMPACT
REPORT Enables a compact version of the RS-232
reporting with up to five parameters sharing
the same output line.
OFF OFF or ON
CHANNEL
ENABLED Enables or disables the channel. Provides a
convenient means to temporarily disable a
data channel.
ON OFF or ON
CAL HOLD OFF Disables sampling of data parameters while
instrument is in calibration mode.
Note that - when enabled here - there is
also a length of the DAS HOLD OFF after
calibration mode, which is set in the VARS
menu. (Section 6.5.)
OFF OFF or ON
6.10.1.2. iDAS Parameters
Data parameters are types of data that may be measured and stored by the iDAS. For each
TAI analyzer model, the list of available data parameters is different, fully defined and not
customizable. Appendix A-5 lists firmware specific data parameters for the M9110E. The
most common parameters are concentrations of measured gases (NO
X
, NO and NO
2
),
temperatures of heated zones (NO
2
converter, reaction cell, box temperature…), pressures
and flows of the pneumatic subsystem and other diagnostic measurements as well as
calibration data (slope and offset) for each gas.
Most data parameters have associated measurement units, such as mV, ppb, cm³/min, etc.,
although some parameters have no units. The only units that can be changed are those of
the concentration readings according to the SETUP-RANGE settings. Note that the iDAS
does not keep track of the unit of each concentration value and iDAS data files may contain
concentrations in multiple units if the unit was changed during data acquisition.
Each data parameter has user-configurable functions that define how the data are recorded
(Table 0-21).
Table 0-21: iDAS Data Parameter Functions
Function Effect
PARAMETER Instrument-specific parameter name.
SAMPLE MODE INST: Records instantaneous reading.
AVG: Records average reading during reporting interval.
MIN: Records minimum (instantaneous) reading during reporting interval.
MAX: Records maximum (instantaneous) reading during reporting interval.
PRECISION Decimal precision of parameter value(0-4).
STORE NUM. SAMPLES OFF: stores only the average (default).
ON: stores the average and the number of samples in each average for a
parameter. This property is only useful when the AVG sample mode is used.
Note that the number of samples is the same for all parameters in one
channel and needs to be specified only for one of the parameters.
Users can specify up to 50 parameters per data channel (the M9110E has about 30 para-
meters). The number of parameters and channels is also limited by analyzer memory.