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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 Description
Supply voltage
Current supply voltage measured at the terminals of the transmitter in volts (± 5 %).
Max. elec. temp.
Highest detected internal temperature in °C that the transmitter was subjected to. This value cannot be
reset.
Min. elec. temp.
Lowest detected internal temperature in °C that the transmitter was subjected to. This value cannot be
reset.
Max. reading for sensors 1 / 2
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.
Min. reading for sensors 1 / 2
Smallest measured value on Sensor 1 or 2. When changing the sensor type the value is reset automatically.
Reset
The drag indicators for the sensor readings are all reset to the current measured value in each case.
Operating hours statistics
Value Description
Operation Time
Total hours since commissioning that the supply voltage has been switched on for the transmitter.
Operation Time (Depending on device temperature) The operating hours are categorized according to the measured internal temperature of 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.
Change from one to two columns
