LEYBOLD THERMOVAC TTR 101 N, Руководство по эксплуатации

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34 300544655_002_C1 - 11/2016 - © Leybold
Calibration and adjustment
Q:
How often does the transmitter require calibration or Zero adjustment?
A: It depends on the application and pressure range but in many applications user adjustment is never required.
Factors that temporally or permanently can influence the measuring performance is contamination, corrosion, heat
and electronic interference.
Q: Will the transmitter retain user calibration after power is shut off?
A: Yes - all transmitter parameters including calibration data are stored internally in the transmitter nonvolatile
memory.
Service and repair
Q:
Can the sensor element be changed if contaminated?
A: No - the sensor elements cannot be changed without changing its measuring electronics. The transmitter flange
assembly can be exchanged can be exchanged with the replacement part. See chapter 2.3.
Q: A +24 VDC supply voltage has been connected to analog . Is the transmitter damaged?
A: Likely - the analog output is not protected against applying power to the output pin.
Q: Reverse voltage has been connected to power supply input. Is the transmitter damaged?
A: Not likely
– the transmitter power supply circuit has reverse voltage and over voltage protection, however,
Leybold cannot guarantee that the transmitter will not be damaged.
Q: The status light ring is constantly illuminating red?
A: The red status indicates a defect MEMS Pirani sensor element most likely damaged by corrosion or
contamination. It can also occur if electronics malfunction.