4-20 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
Temperature Zones (b2, b1)
b2 b1 Number of zones Zone Number
0 0 None None
0 1 2 1, 4
1 0 3 1, 2, 4
1 1 4 1, 2, 3, 4
The Temperature Zone code denes the number of temperature zones used by the ana-
lyzer, where ‘n’ = 0, 2, 4, 6, or 32. The denition for each bit is:
0 = No temperature control
2 = 2 temperature zones (1, 4)
4 = 3 temperature zones (1, 2, 4)
6 = 4 temperature zones (1, 2, 3, 4)
32 = Temperature zone 3 (heating logic, heater plate)
The code is the decimal equivalent of an 8-bit binary number, which denes the bench type
in regard to the temperature control parameters.
The temperature zones are:
Zone 1 = Sample Line
Zone 2 = Vent Line (or SCU, if used)
Zone 3 = TZone3 – Spare
Zone 4 = Oven Temperature
Filter Position Assignment (b4, b3)
b4 b3 Lamp 1 Lamp 2
0 0 1-3-5 4-6-2
0 1 3-5 4-6-1-2
1 0 1-3-4-5 6-2
b7, b6, b5 – reserved for future use.
F2 2 Samples ** Number of times the PMT signal is measured while a lter is completely within the light
path.
F2 3 Delay ** The time interval from when a lter becomes completely within the light path to the rst
PMT-signal measurement. The interval is shown as multiples of 1.6 microseconds (µs).
F2 4 RpmAvg **The number of Chopper Wheel rotations used to calculate its speed of rotation (RPM).
F2 5 T90 The time (seconds) required for the output signal to reach 90 percent of the nal value after
a step change in the concentration. Larger values reduce the noise level on the output
signal but, at the same time, increase the response time.
F2 6 Outputz The Output Signal Assignment (OSA) code for each current output, where ‘z’ = 1..4. Allows
you to determine which of the calculated results (parameters) will be available as output
signals. These outputs are application-specic. Refer to “Output Signal Assignment (OSA)”
in this chapter for more information.
1 = Output1
2 = Output2
3 = Output3
4 = Output4
To Next Page
Loading...
Need help?
General
