GRAPHTEC MT100 User Manual page 59

Settings and Measurement
CHECKPOINT
• Calculation results will be displayed in "V" (Volts).
If you calculate "100 mV + 100 mV", the result will be displayed as "0.2".
To display the result as "200 mV", change the scaling settings.
• The formula to calculate humidity using dry and wet bulb temperatures is as follows:
Logic and Pulse settings
This screen allows you to set conditions for digital inputs.
Logic/Pulse
<When digital input is "logic">
Filter
<When digital input is "pulse">
Input
Filter
Slope
EU
3-20
td : dry bulb temperature (1 ch)
tw : wet bulb temperature (2 ch)
K : constant (0.000662, when wet bulb is not frozen)
P : barometric pressure (101325)
E(t) : saturated vapor pressure at temperature t (JIS standard)
Setting items
Selects the process method performed on digital input.
Off
Logic
Pulse
Sets the filter for logic input.
Off
ON
Sets the pulse measurement mode.
Off
Revol.
Counts
Inst.
Sets the filter for pulse input.
Off
ON
Sets the slope (direction) to count the number of pulses.
H
L
Sets scales for pulse measurement values.
Description
Digital input will not be measured.
Processes digital input as logic signals.
Processes digital input as pulsesignals.
Disables the hardware filter.
Enables the hardware filter. Filter function can be effective when
measurements areperformed in noisy environments.
Filter is approximately 30 Hz (- 3dB).
Pulse input will not be measured.
Counts the number of pulses per second, multiply it by 60, and
captures that value as rpm values.
Captures the cumulative number of pulses for each sampling interval
from the start of measurement.
Captures the number of pulses for each sampling interval.
Disables the hardware filter.
Enables the hardware filter.† Filter function can be effective when
measurements areperformed in noisy environments.
Filter is approximately 30 Hz (-3dB).
Counts the rising pulses.
Counts the falling pulses.