Temperature Measurement Settings (For Rtds) - Hioki Memory HiLogger LR8401-20 Instruction Manual

60
3.3 Input Channel Settings

Temperature Measurement Settings (for RTDs)

Follow this procedure to configure resistance temperature detector (RTD) measurement
channels. Make these settings on the
"Key Setting Procedure" (p .55)
See:
1
Select the input unit
(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.
Setting options:(
∗
Pt100 , JPt100
4
Select the appropriate temperature measure-
ment range.
Setting options:(
∗
100°C , 500°C, 2000°C
5
Select the wiring configuration.
Setting options:(
∗
3-wire RTD connection configuration
3 Wire
4 Wire 4-wire RTD connection configuration
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
RTD
[CH]
(UNIT1 to 4) and channel
∗
: default setting)
∗
: default setting)
∗
: default setting)
Input range +OVER value
100°C 327.67
500°C 1638.4
2000°C 3276.7
screen.
1
2 3 4
The range setting determines
the measurable temperature
range
100°C
500°C
2000°C
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)
Pt100
JPt100
-OVER value
-327.68
-1638.4
-3276.8
: On
: Off
5
-100°C to 100°C
-200°C to 500°C
-200°C to 2000°C
-200°C to 800°C
-200°C to 500°C
°
[ C]
1000
800
0
-200
-1000