Teledyne Camera Accessories T100 Manual Do Utilizador
Principles of Operation
Teledyne API - T100 UV Fluorescence SO2 Analyzer
308
13.5.7.3. STATUS LEDS & WATCH DOG CIRCUITRY
Zero/Span and IZS O ptions
Sam ple/C AL Valve
Sam ple/C AL Valve
IZS O ption
Perm eation T ube H eater
Perm eation T ube H eater
D ark Shutter
Sam ple C ham ber H eater
I2C W atchdog LED
Zero/Span and IZS O ptions
Zero/Span Valve
Zero/Span Valve
Figure 13-21: Relay Board Status LED Locations
Thirteen LEDs are located on the analyzer’s relay board to indicate the status of the
analyzer’s heating zones and valves as well as a general operating watchdog indicator.
Table 13-1 shows the state of these LEDs and their respective functionality.
analyzer’s heating zones and valves as well as a general operating watchdog indicator.
Table 13-1 shows the state of these LEDs and their respective functionality.
Table 13-1:
Relay Board Status LED’s
LED
COLOR
FUNCTION
STATUS WHEN LIT
STATUS WHEN UNLIT
D1 RED Watchdog
circuit
Cycles On/Off every 3 seconds under control of the CPU.
D2 YELLOW
Sample chamber
(RCELL) heater
HEATING NOT
HEATING
D3, D4
YELLOW
Unused
N/A
N/A
D5
YELLOW
IZS heater (option)
HEATING
NOT HEATING
D6
YELLOW
Unused
N/A
N/A
D7
GREEN
Zero / Span Valve
Valve open to Span Gas path
Valve open to Zero Gas
(normal state)
D8
GREEN
Sample / Cal Valve
Valve open to
calibration gas path
Valve open to sample gas
inlet on rear panel
(normal state)
D9, D10
GREEN
Unused
N/A
N/A
D11
GREEN
UV Lamp Shutter
Shutter open
Shutter closed
D12-14
GREEN
Unused
N/A
N/A
06807C DCN6650