Yokogawa PC-Based MX100 - Manual (Page 91)

4-3
IM MX100-01E
Specification
3
2
1
4
5
Index
Linear scaling accuracy:
Linear scaling accuracy (digits)
= Measurement accuracy (digits) × expansion rate + 2 digits
(rounded up to the decimal place)
Note that the expansion rate = scaling span (digits) /
measurement span (digits)
(Ex.) Measuring range: 6 VDC (integral time of 16.67 ms or
more)
Measurement span: 1.000 to 5.000 V,
Scaling span: For a setting of 0.000 to 2.000
The measuring accuracy for 5.000 V input is as follows
according to the expression above.
± {(0.05% × 5.000 V + 2 digits) × (2000 / 4000) + 2 digits}
= ± {(0.0025 V + 2 digits) × 0.5 + 2 digits}
= ± 4.25
≈ 5 digits (rounded up to the decimal place)
Thus the measuring accuracy when scaling = ± 5 digits
Remote RJC
When the item to be measured is located at a great distance, you can setup relay
terminals near the item, measure between the relay terminal and the input terminal of
the input module (reference channel) using thermocouples, and use the resultant value
as the reference junction compensation of the temperature measurement. However, the
same thermocouple type is used for reference channels and measured channels.
Alarms
Alarms available on the main module (active even when communication is
disconnected)
*1
Alarm types: Upper limit, lower limit, differential upper limit, and differential
lower limit
Number of settings: 4 levels per channel
Alarm setting range: DCV, thermocouple, RTD, DI, strain, resistance, and scaling
Hysteresis:
Sets the hysteresis width of the alarm occurrence/release.
No. of alarm outputs: 10 to 60 (10 points per DO module)
Output mode:
Alarm, manual *2 , Fail, Error
*1 When connected to PC software, the upper/lower limit alarm and
upper/lower limit on rate-of-change alarms of computation channels
can be performed.
*2 At least 100 ms is required for the response time to detect changes
in output.
The “and” logic cannot be used with the MX100 Standard
Software.
Data Storage
Saves measured data to the CF card on the main module if communication is
disconnected while recording measured data on the PC.
Supported external media:
CF card (up to 2 GB)
Save start condition: When the timeout time elapses after the communication is
disconnected during recording of measured data on the PC
(the timeout time refers to the time from the point when the
communication between the PC and MX100 is disconnected and
acquisition of measured data is stopped to the point when data
storage to the CF card starts; the setting is 60 s)
4.2 Main Module (MX100-E) Specifications