Ametek 900

4-26 | Model 900 ADA / Model 930 Sulfur Pit Analyzers
F5 6 RPM Average speed of the Chopper Wheel (RPM).
F5 7 MDI ab The Microcontroller Board’s Digital Input status code, where ‘a’ and ‘b’ are the status of the
inputs. The analyzer has two external digital inputs that are designed to accept a dry (po-
tential free) contact closure. Input 1 is reserved for future use. Input 2 is for Remote Start of
the Auto-Zero (Calibration) or Remote Start of the Backpurge (optional).
a (Input 1) = Reserved for internal use.
b (Input 2) = Remote Start of Auto-Zero (Calibration)
0 (external contact is open – normal analyzer operation)
1 (external contact is closed – Auto-Zero is initiated after 5-second delay)
or
Remote Start of Backpurge
0 (external contact is open – Backpurge is initiated)
1 (external contact is closed – normal analyzer operation:
the Flow Control mode changes to automatic Analyzer Control)
Code Contact Status
ab Input 1 Input 2
00 Open Open
01 Open Closed
10 Closed Open
11 Closed Closed
F5 8 LmpPz Existing lamp pulse (V) for each lter as generated by the Automatic Lamp Control, where
‘z’ = 1..6.
1 = Filter 1 4 = Filter 4
2 = Filter 2 5 = Filter 5
3 = Filter 3 6 = Filter 6
F5 9 TCyclez Existing temperature control duty cycle for each temperature zone, where ‘z’ = 1..6.
1 = slCycle – Sample Line (default = 0 %)
2 = vlCycle – Vent Line (default = 0 %)
3 = skoCycle – Sulfur Knock-Out (default = 0 %)
4 = celCycle – Analyzer Measuring Cell (default = 100 %)
5 = htrCycle – Heater Plate, Oven (default = 100 %)
6 = prbCycle – ASR900 Sample Probe (default = 0 %)