TTF300 FIELD-MOUNT TEMPERATURE TRANSMITTER | OI/TTF300-EN REV. I 81
11 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’).
SW-Rev. 01.03)
Current supply voltage mea
sured at the terminals of the transmitter in volts (± 5 %).
-devices from SW-Rev.: 03.00)
Monitoring of the 4 to 20 mA loop current.
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.
1 / 2
Largest measured value on Sensor
1 or 2.When changing the sensor type (e.g., Pt100 to thermocouple type K), the value
1 / 2
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.
Operating hours statistics
Total hours since commissioning that the supply voltage has been switched on for the transmitter.
(according to unit 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 di
ffer 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 li
mited, in
particular, with respect to accuracy and service life.
* For HART devices in tools such as FIM and DTM
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