Hioki LR8410-20, Instruction Manual

Page: 302 / 364

12.2 LR8510 Wireless Voltage/Temp Unit Specifications
290
Thermocouple

burnout detection
Enable/disable thermocouple burn-out detection at each recording inter-
val.5

A±20% detection current.

No current flow when acquiring measurement data.
(The burnout detection setting cannot be used with a recording interval
of 100 ms.)
Digital filter Off, 50 Hz, 60 Hz (automatically sets the cut-off frequency according to
the recording interval)
Cut-off frequency
Input resistance
1 M

±5% (voltage and thermocouple measurement)
Normal mode rejection

ratio
50dB minimum (with 50 Hz input with 5 s recording interval, and 50 Hz
digital filter enabled)
(with 60 Hz input with 5 s recording interval, and 60 Hz digital filter
enabled)
Common mode

rejection ratio
with 100

maximum signal source impedance
100dB minimum (with 50 Hz or 60 Hz input and digital filter disabled)
140dB minimum
(for 50-Hz input with 5 s recording interval, 50-Hz digital filter enabled,
10 mV f.s. range setting)
(for 60-Hz input with 5 s recording interval, 60-Hz digital filter enabled,
10 mV f.s. range setting)
Maximum input voltage DC±100 V
Max. inter-channel

voltage
DC300 V
Maximum rated voltage

to earth
300 VAC, DC (between each input channel and chassis)
Measurement category II
Anticipated transient overvoltage 2,500 V
Inputs
Digital filter
settings
Burn-
out
detec-
tion
set-
ting
Recording interval
100
ms
200
ms
500
ms
1 s 2 s 5 s 10 s 20 s 30 s to
60 Hz
OFF 1.8 k 0.7 k 60 60 60 60 60 60 60
ON - 1.8 k 0.7 k 60 60 60 60 60 60
50 Hz
OFF 1.8 k 0.7 k 50 50 50 50 50 50 50
ON - 1.8 k 0.7 k 50 50 50 50 50 50
OFF
OFF 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k
ON - 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k 1.8 k
[Unit:Hz]