Hioki MEMORY HiLOGGER LR8450 Instruction Manual page 329

Plug-in Module Specifications
Reference junction
compensation
Thermocouple wire
break detection
Data refresh interval
Digital filters
(1) When the number of channels in use is 15 or less
Power
supply
frequency
filter setting
60 Hz
50 Hz
(2) When the number of channels in use is 16 to 30
Power
supply
frequency
filter setting
60 Hz
50 Hz
Find Quality Products Online at:
Internal/external (user-selectable) (during thermocouple measurement)
The system will check for wire breaks at the date refresh intervals during thermocouple
measurement.
On/Off (user-selectable) (set for entire module)
Detection current: 5 μA ±20% (No current flows while acquiring measurement data.)
Setting not available when the data refresh interval is set to 10 ms.
Setting not available when the data refresh interval is set to 20 ms and 16 or more
channels are being used.
10 ms* 1 , 20 ms* 2 , 50 ms, 100 ms, 200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s
*1: Setting available when thermocouple wire break detection is disabled and the number
of channels in use ranges from 1 to 15.
*2: Setting available when thermocouple wire break detection is disabled and the
number of channels in use ranges from 16 to 30. Alternatively, setting available when
thermocouple wire break detection is enabled and the number of channels in use
ranges from 1 to 15.
The digital filter cutoff frequency is automatically set as described in the following table
according to the number of channels in use, data refresh interval, Wire break detection
setting, and power supply frequency filter setting:
Wire
break
detection
10 ms 20 ms
setting
Off 20.8 k 6.94 k
On – 20.8 k
Off 20.8 k 6.94 k
On – 20.8 k
Wire
break
detection
10 ms 20 ms
setting
Off – 20.8 k
On – –
Off – 20.8 k
On – –
GlobalTestSupply
www.
Data refresh interval
50 ms 100 ms 200 ms 500 ms
2.98 k 2.37 k 739
6.94 k 2.98 k 2.37 k
2.98 k 2.37 k 739
6.94 k 2.98 k 2.37 k
Data refresh interval
50 ms 100 ms 200 ms 500 ms
6.94 k 2.98 k 2.37 k
20.8 k 6.94 k 2.98 k
6.94 k 2.98 k 2.37 k
20.8 k 6.94 k 2.98 k
–: Setting not available
1 s 2 s 5 s
60 60 60 60
739 60 60 60
50 50 50 50
739 50 50 50
Unit: Hz
–: Setting not available
1 s 2 s 5 s
739 60 60 60
2.37 k 739 60 60
739 50 50 50
2.37 k 739 50 50
Unit: Hz
.com
sales@GlobalTestSupply.com
10 s
60
60
50
50
10 s
60
60
50
50