
Chapter 10 Specifications
142
(2) Measurement Functions
Common mode
rejection ratio
with 100
maximum signal source impedance
100dB minimum (with 50 or 60 Hz input and digital filter disabled)
140dB minimum (with 50 Hz input with 5 s recording interval, and
50 Hz digital filter enabled)
(with 60 Hz input with 2 s recording interval, and
60 Hz digital filter enabled)
Broken wire
detection
(Temperature input) selectable On or Off, approx. 300 nA detection
current
Maximum input
voltage
30 Vrms or 60 V DC (analog input channel)
Maximum rated
voltage to earth
30 Vrms or 60 V DC (between each input channel and chassis, and
between input channels)
Anticipated transient overvoltage 330 V
Pulse input
Non-voltage “a” contact (normally open)
open collector or voltage input
Maximum input
voltage
0 to 10 V DC
Maximum channel-
to-channel voltage
Non-isolated
(channels use the Memory HiLogger common ground)
Maximum rated
voltage to earth
Non-isolated
(channels use the Memory HiLogger common ground)
Detecting level
High: 2.5 V min., Low: 0.9 V max.
Pulse input period
At least 200 µs (both H and L levels at least 100 µs)
Slope
Either rising or falling edge pulse detection can be set for each
channel
Function
Integrated count, revolution variation
Basic Specifications
Recording interval
10, 20, 50, 100, 200 or 500 ms; or 1, 2, 5, 10, 20 or 30 s; or 1, 2, 5,
10, 20 or 30 min; or 1 h
Recording length
(time span)
Any, with continuous recording selectable
Recording repetition
function
Repeatedly measures using the specified recording length
Timer function
Records between specified start and stop times
Specifiable
waveform colors
24 colors
Содержание LR8431
Страница 1: ...EN LR8431 20 MEMORY HiLOGGER Instruction Manual Aug 2015 Revised edition 3 LR8431B980 03 15 08H...
Страница 2: ......
Страница 20: ...Operating Precautions 12...
Страница 44: ...2 5 Zero Adjustment 36...
Страница 74: ...3 7 Viewing All Channel Settings in a List 66...
Страница 88: ...4 5 About Recording Operation 80...
Страница 120: ...6 6 Transferring Data to a Computer USB Drive Mode 112...
Страница 126: ...7 2 Numerical Value Calculation Expressions 118...
Страница 136: ...8 3 Making System Settings 128...
Страница 144: ...9 5 Synchronous Measurements with Multiple Instruments 136...
Страница 154: ...Chapter 10 Specifications 146...
Страница 198: ...Appendix 11 Pulse Input Circuit Diagram A40...
Страница 202: ...Index Index 4...
Страница 203: ......
Страница 204: ...EN LR8431 20 MEMORY HiLOGGER Instruction Manual Aug 2015 Revised edition 3 LR8431B980 03 15 08H...