Siemens SITRANS VP300, Руководство по эксплуатации

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Operate
6.2 Parameter description
SITRANS VP300 with or without HART
118
Operating Instructions, 03/2011, A5E01258666-03
"3.6.8.2 Unit"
Factory setting: °C
Setting options:

°C
 °F
Purpose: Define temperature unit.
Description:
Use this parameter to set the temperature unit "°C" or "°F".
The selected temperature unit then also applies to all other
temperature-related parameters or values.
"3.6.8.3 Threshold 1" to "3.6.8.5 Threshold 3"
Requirements: Monitoring function is activated.
"3.6.8.1 Activation" (Page 117)
Factory setting:
 With "3.6.8.3 Threshold 1": -20.0 °C

With "3.6.8.4 Threshold 2": -30.0 °C
 With "3.6.8.5 Threshold 3": -40.0 °C
Setting range:
 -40.0 ... 90.0 °C

-40.0 ... 194.0 °F
Identical setting range for each threshold.
"3.6.9 Upper limit temperature"
This menu is used to make all settings regarding monitoring of the upper temperature limit.
The actual temperature in the housing interior is measured on a continuous basis and
compared with the corresponding thresholds. If one of the three parameterizable thresholds
exceeds this value during the test, a maintenance message is output by the device.
"3.6.9.1 Activation"
Factory setting: Off
Setting options:

Off

On
Purpose: Monitor upper temperature limit.
Description: When the parameter is active, the positioner monitors the upper
temperature limit in the housing interior on a continuous basis. The
actual temperature is registered by a sensor on the electronic
conductor board. The temperature limit is monitored by three
thresholds. Please check whether the "thresholds" apply to your
application.