Hioki LR8402-20 - Temperature Measurement Settings (for Rtds)

3.3 Input Channel Settings
58
Follow this procedure to configure resistance temperature detector (RTD) measurement
channels. Make these settings on the [CH] screen.
See: "Key Setting Procedure" (p .53)
Temperature Measurement Settings (for RTDs)
1 Select the input unit (UNIT1 to 4) and channel
(1-1 to 4-15), and check the box to enable the
channel.
2 Select [Rtd].
3 Select the type of RTD to be used.
4 Select the appropriate temperature measure-
ment range.
5 Select the wiring configuration.
Setting options:(  : default setting)
Pt100
, JPt100
Setting options:(  : default setting)
100C
, 500C, 2000C
Setting options:(  : default setting)
3 Wire
3-wire RTD connection configuration
4 Wire 4-wire RTD connection configuration
1
The range setting determines
the measurable temperature
range
Temperature measurement limits
are determined by the measure-
ment range selected for each
sensor.
Temperature Measurement
Ranges
(Temperature measurement
range depends on RTD char-
acteristics)
100C
-100°C to 100°C
500C
-200°C to 500°C
2000C
-200°C to 2000°C
Pt100
-200°C to 800°C
JPt100
-200°C to 500°C
23 4
: On
: Off
5
[C]
1000
800
0
-200
-1000
When the RTD measurement range is exceeded, or when a
measured value far exceeds the range limit (range label)
• Example: Using a type Pt100 RTD with range -200 to +800°C
When a measured value exceeds the measurement range of the
RTD and far exceeds the range limit (range label), the waveform
saturates at the top of the screen, as shown at the right.
• When a measured value far exceeds range limit (range label),
"OVER" or "-OVER" is displayed in place of numerical/cursor val-
ues, and the following values are applied to calculations and data
storage.
Input type Input range +OVER value -OVER value
RTD
100°C 327.67 -327.68
500°C 1638.4 -1638.4
2000°C 3276.7 -3276.8