Hioki MEMORY HiLOGGER LR8450 Instruction Manual page 344

Accessories
Options
2. Input, output, and measurement specifications
-1. Basic specifications
Number of input
channels
Input terminals
Measurement target
Input type
A/D resolution
Maximum input
voltage
Maximum channel-to-
channel voltage
Maximum rated
terminal-to-ground
voltage
Input resistance
Allowable signal
source resistance
Reference junction
compensation
Thermocouple wire
break detection
Data refresh interval
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15 channels (Set voltage or thermocouple for each channel.)
M3 screw-type terminal block (2 terminals per channel), outfitted with terminal block cover
Voltage
Thermocouples (K, J, E, T, N, R, S, B, C)
Scanning by semiconductor relays, floating unbalanced input
All channels isolated
16 bits
±100 V DC
300 V DC
300 V AC, DC (Measurement Category II)
Between any input channel (+, −) and the enclosure
Anticipated transient overvoltage: 2500 V
Ω
10 M or greater (10 mV f.s. to 2 V f.s. voltage ranges, all thermocouple ranges)
Ω
1 M ±5% (10 V f.s. to 100 V f.s. voltage ranges, 1-5 V f.s. voltage range)
Ω
1 k or less
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.)
10 ms*, 20 ms, 50 ms, 100 ms, 200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s
*: Setting available when thermocouple wire break detection is disabled.
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