Union CWD2005 DPC, Руководство по эксплуатации

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CWD2005 DPC
Operation combustion calorimeter
chapter — page: 7—43
7.6.1.1.1.2 Main menu - Options - I/O - Relay output
The digital output can e.g. comprise signals in combination with limit values or op-
eration messages.
Example:
The Wobbe signal in MJ/m³ has an alarm value at 47,000 and 50,000 MJ. The zero
position is high. The relay for the signals described in the following are switched
under the following conditions:
•
Process: The solenoid valve for process gas is open and the flame is burning.
•
Calibrate: The solenoid valve for calibration gas is open and the flame is
burning.
•
Service: Filter change of air filter (the frequency of the frequency converter is
> 48 Hz) or air inlet temperature > 41°C.
•
Filter change: Filter change of air filter (The frequency of the frequency con-
verter is > 48 Hz)
•
Fault: The air filter is heavily soiled. The differential air pressure is thus < 3.5
mbar
•
Operation: The flame is burning.
•
Operation delayed: The flame is burning and the delay time has expired.
•
Over temperature: The flame is too hot. The Wobbe signal is larger than 76
mV, i.e. the temperature increase in the inner pipe of the thermal battery is
more than 50°C.
•
Calibration deviation: In a basic calibration you can set a signal which will trig-
ger and alarm when the deviation to the basic calibration exceeds the alarm
value. This is possible in negative and positive direction.
•
Int. pressure: An alarm is triggered in case of lack of process gas or lack in
the calibration gas line.