Yokogawa Value Series FX1000 - Manual (Page 10)

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IM 04L21B01-01EN
Overview of Functions
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App
Index
1.1 Input Section
Measurement Channel
• Number of Measurement Channels and Scan Interval
The FX acquires data by sampling measurement channel input signals at the set scan
interval. The table below shows the relationship between the number of measurement
channels and the scan interval
Model
Number of Measurement
Channels
Scan Interval
A/D Converter
Integration Time
FX1002 2
125ms, 250ms AUTO 1 /50Hz/60Hz
FX1004 4
FX1006 6
1s, 2s, 5s
AUTO 1 /50Hz/60Hz/
100ms 2
FX1008 8
FX1010 10
FX1012 12
1 AUTO: The FX automatically switches between 50 Hz and 60 Hz depending on the power
supply frequency.
2 You can only set the integration time to 100 ms on models FX1006 through FX1012.
If you set the integration time to 100 ms, you can only set the scan interval to 2 seconds or
5 seconds.
For the setting procedure, see section 3.1.
• Integration Time of the A/D Converter
The FX uses an A/D converter to convert sampled analog signals to digital signals.
By setting the integration time of the A/D converter to match the time period
corresponding to one cycle of the power supply or an integer multiple of one cycle, the
power supply frequency noise can be effectively eliminated.
• Because 100 ms is an integer multiple of 16.7 ms and 20 ms, this setting can be used to
eliminate the power frequency noise for both frequencies, 50 Hz and 60 Hz.
For the setting procedure, see section 3.1.
Input Type and Computation
You can make measurements using the following input types.
Input Type Description
DC voltage You can measure DC voltages in the range of ±20 mV to ±50 V.
DC current
You can measure a DC current signal by converting it to a voltage signal using a shunt 1
resistor attached to the input terminal. The converted signal can be measured within the DC
voltage range (see above).
Thermocouple
You can measure temperatures corresponding to these thermocouple types: R, S, B, K, E, J,
T, N, W, L, U, and WRe3-25. It is also possible to measure using other thermocouples, such
as PR40-20 and PLATINEL. 2
RTD
You can measure temperatures using RTD types Pt100 and JPt100.
It is also possible to measure using other RTD types such as Pt50 and Ni100.
2
ON/OFF input
You can display contact input or voltage input signals correlated to 0% or 100% of the
display range.
Contact input: A closed contact is on (1). An open contact is off (0).
Voltage input: Less than 2.4 V is off (0). 2.4 V or more is on (1).
Pulse input 3 You can count pulses. Use the dedicated input terminal.
AC voltage and current 4 You can measure the power and electric energy. Use the dedicated input terminal.
Logarithmic DC voltage 5 Use the Log scale to display and record the physical quantity.
1 Item sold separately. For example, you can use a 250 Ω shunt resistor to convert a 4 to
20 mA signal to a 1 to 5 V signal.
2 /N3F option
3 /PM1 option
4 /PWR1 option
5 /LG1 option
Chapter 1 Overview of Functions