10
Figure 4
This is the parameter setting interface of SF6 density relay verification.In
this interface, four parameters can be set, such as upper limit pressure,
detection times, temperature acquisition, signal type, etc.
"Upper limit pressure" refers to the switching pressure value from air inlet to
air outlet when testing the density relay. "Click to select" will display the decile,
percentile and thousandth of the selected value in reverse order. After
selecting one position, rotate the mouse left and right to change from 0 to 9.
The setting range of pressure value is 0.001mpa to 0.999mpa, and the default
value is 0.1MPa.
"Detection times" is used to set the cycle times of inflation and deflation. Click
"select" to select between 1, 2 and 3. The default value is 1.
"Temperature mode" is used to select the temperature acquisition mode of the
system. There are two options: "system" and "input"."System" refers to the
sensor provided by the system to sense the ambient temperature; "input"
refers to the internal temperature of the density relay tested by the user with an
infrared thermometer, and then manually input.The default is system
acquisition. When the cursor moves to temperature acquisition, click Select to
switch between the system and input. When it is input, the cursor will select the
entered temperature value, and then rotate the mouse left and right to set the
temperature value.
"Signal type" is used to select the signal type for test. There are three
options, namely "single signal", "single lock" and "double lock", and "click to
select" to switch back and forth. The three options are described in detail
below.
Single signal:
When selecting a single signal, only one test signal can be
connected to the instrument, and either single alarm, single lock 1 or single
lock 2 can be selected, which is determined by the physical connection and
automatically recognized by the system.