Diagnosis / Error Messages; Diagnostic Information; Monitoring Of Operating Data; Operating Hours Statistics - ABB TTH300 Series Operating Instruction
Head-mount temperature transmitter
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Also See for TTH300 Series:
- Operating instruction (76 pages) ,
- Instructions manual (26 pages) ,
- Safety instructions (24 pages)
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TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. E
12 Diagnosis / error messages
Diagnostic information
Monitoring of operating data
The transmitter saves the highest and lowest values for the electronic unit temperature as well as measured values from sensor 1 and
sensor 2 in the non-volatile memory ('Drag Indicator').
Value
Supply voltage
Max. elec. temp.
Min. elec. temp.
Max. reading for sensors 1 / 2
Min. reading for sensors 1 / 2
Reset
Operating hours statistics
Value
Operation Time
Operation Time (Depending on device temperature) The operating hours are categorized according to the measured internal temperature of the transmitter.
Change from one to two columns
Description
Current supply voltage measured at the terminals of the transmitter in volts (± 5 %).
Highest detected internal temperature in °C that the transmitter was subjected to. This value cannot be
reset.
Lowest detected internal temperature in °C that the transmitter was subjected to. This value cannot be
reset.
Largest measured value on Sensor 1 or 2. When changing the sensor type (e.g., Pt100 to thermocouple
type K), the value is reset automatically.
Smallest measured value on Sensor 1 or 2. When changing the sensor type the value is reset automatically.
The drag indicators for the sensor readings are all reset to the current measured value in each case.
Description
Total hours since commissioning that the supply voltage has been switched on for the transmitter.
Due to rounding and frequently switching the device on and off, the total of the individual values may differ
slightly from the value displayed by the counter for operating hours. Values in the fields on the far left and
right indicate operation of the transmitter outside the specified range. In this event, acknowledged
properties of the transmitter might be limited, in particular, with respect to accuracy and service life.
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