Yokogawa DAQWORX Bedienungsanleitung PDF herunterladen (Seite 52)

2-22

IM WX103-01E

• The reference channel is a measurement channel (channel existing on the

measurement channel page) with the Monitor check box selected.

• The range of the reference channel and that of the corresponding measurement

channel are the same.

• The channel is in the same unit (MX100).

Setting the Time Constant of the First-Order Lag Filter (Valid Only When

the Input Mode Is Set to Something Other than DI)

A first-order lag filter is available. Select from the Filter list box, the time constant N (time

until 63.2% of the output value is reached) for the case when the measurement interval

(Monitor interval in the settings) is set to 1 s. Time constants when the measurement

interval is set to a value other than 1 s follow the equation below.

Time constant = measurement interval × N (where N = 5, 10, 20, 25, 40, 50, or 100)

The table below lists the relationship.

Measurement Interval (s) Selectable Time Constants (s)

0.01 0.05 0.1 0.2 0.25 0.4 0.5 1

0.05 0.25 0.5 1 1.25 2 2.5 5

0.1 0.5 1 2 2.5 4 5 10

0.2 1 2 4 5 8 10 20

0.5 2.5 5 10 12.5 20 25 50

1 5 10 20 25 40 50 100

2 10 20 40 50 80 100 200

5 25 50 100 125 200 250 500

10 50 100 200 250 400 500 1000

20 100 200 400 500 800 1000 2000

30 150 300 600 750 1200 1500 3000

60 300 600 1200 1500 2400 3000 6000

Input

63.2% of the output value

Output curve when

the filter is used

Time constant in the table above

Setting the Burnout

When the input mode is set to TC, you can set the burnout detection behavior. (This

setting is possible when the input mode is set to a mode other than DI, but the setting

takes effect only when the mode is TC.) If set to Up, the measured value is fixed to

+OVER when a burnout is detected (condition in which the input signal level exceeds

the upper limit of the measurement range). If set to Down, the measured value is fixed

to – OVER (condition in which the input signal level exceeds the lower limit of the

measurement range). To not detect burnouts, select Off (default).

Setting the RJC

When the input mode is TC, select whether to use the internal reference junction

compensation function of the input module or an external reference junction

compensation function. (This setting is possible when the input mode is set to a mode

other than DI, but the setting takes effect only when the mode is TC.) When using the

external reference junction compensation function, set an appropriate reference junction

compensation voltage (Volt in the setup) in the range of –20000 µV to 20000 µV. For

example, if the reference junction temperature of the external reference compensation is

°C, set the reference compensation junction voltage to the thermoelectromotive force

of the 0-°C reference of T

°C.

2.4 Setting the Measurement Conditions (Measurement Channel Settings)

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