Max/Min; Reset; Auto-Switch Off; Measurement - Fluke Comark N8004 Manuel D'utilisation

3.5
MAX
MIN
This button scrolls through the display of the Maximum, Mini-
mum and current humidity and temperature. It also cycles
through the Maximum and Minimum values in dewpoint and
hold modes.
3.6

RESET

Resets Maximum and Minimum to Current value. This function
occurs automatically at switch-on.
The reset button copies the current value into the Maximum and
Minimum stores, but it does not alter the selection for display.
3.7
The N8000 series can be configured either to switch off
automatically five minutes after the last button operation or to
remain permanently on until manually switched off.
This mode is indicated on the display by the AUTO symbol.
When this is visible the instrument will auto power down.
To change from one mode option to the other, switch the instru-
ment OFF, then with the °C/°F button depressed switch the
instrument ON again.
4.

MEASUREMENT

Although the humidity sensor is virtually insensitive to temperature over
the normal operating range, temperature itself affects Relative Humidity.
This and other factors are discussed at a later point. This dependence
(typically 0.5%RH for 0.1°C (0.2°F) temperature change) means that
when taking a cold probe into a warmer atmosphere, RH readings will
initially be high and conversely when a warm probe is taken into a cold
atmosphere, readings will initially be low.
To ensure accurate readings the user should wait until the display is
stable.
14

MAX/MIN

RESET

AUTO-SWITCH OFF