ABB ProKiln GAC400 Operating Instruction page 17

ProKiln GAC400 PROBE GAS SAMPLING SYSTEM | OI/GAC400-EN REV. A
The process is monitored by the following devices (see Figure 3 for a detailed drawing):
Monitoring Monitoring device
position
F12 Cooling water flow measurements
P1 Pressure switch
T1 Probe sample tube temperature
T2 Probe sample hose temperature
T3 Heated sample connection point
temperature
T10 Cooling panel water tank temperature
T11 Probe cooling water flow-in
temperature measurement
T12 Probe cooling water flow-out
temperature measurement
M1 Probe position reader
Probe flange Inductive position indicator flange
Pos 0 shutter in closed position
Probe flange Inductive position indicator flange
Pos 1 shutter in open position
L1 Capacitive water tank level full
L2 Capacitive water tank level low
L3 Capacitive water tank level alarm
Purpose
• Protects the probe against overheating
• Monitors the cooling water pump for adequate
pump power
Ensures adequate compressed-air reserve
Protects probe against condensation build-up
inside
Protects probe against condensation build-up
inside
Protects probe against condensation build-up
inside
• Monitors the cooling water temperature in the
holding tank
• Monitors the efficiency of the water-cooling
unit
• Is part of monitoring the process heat input to
the probe
• Protects the probe against overheating
Is part of monitoring the process heat input to the
probe
• Calibration zero point for encoder position
• Ensures that rear safe end position is reached
• Monitors the probe position
• Monitoring of probe travel time
• Monitor Motor torque
Ensures the closed flange position is reached
Ensures the open flange position is reached
Monitors when the water tank full level is reached Turns the water refill valve off
Monitors when the water tank low level is reached Turns the water refill valve on
Monitors when the water tank alarm level is
reached
Function
• Triggers the retraction program if minimum
cooling water flow is not reached
• Cooling water pump function check
Locks various follow up functions
Locks various follow up functions
Locks various follow up functions
Locks various follow up functions
• Turns the water-cooling unit fan on/off
• Causes a water-cooling alarm to retract the
probe
• Turns the water-cooling unit tank heat on/off
(optional)
Is used as base temperature for process heat
input
• Can cause a water-cooling alarm to retract the
probe
• Is used as the off-set temperature from
process heat input
• Provides the reference point for the encoder
• Locks various follow up functions
• Triggers the retraction program if probe travel
time or torque is exceeded
Locks various follow up functions
Locks various follow up functions
Causes a water-cooling alarm to retract the probe
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