RH300-en-GB_v1.7 9/16
4
Taking External (Type K probe) Measurements
Plug in the optional external Type K temperature probe.
1. Pressing the
T/DP/T1
button toggles the lower left display between T1 (Air
temperature), T1-T2 (
∆
T), and DP (Dew point) measurements.
2.
Pressing the
∆
/
WB/T2
button toggles the lower right display between T2 (Type K),
T2-DP (Type K temperature-Dew Point), and WB (Wet Bulb).
Selecting temperature units of measure (C/F)
Press and hold the
o
C/
o
F
button momentarily to toggle the temperature units.
Minimum (MIN) Maximum (MAX) Function
The MIN/MAX mode allows the user to view only the lowest (
MIN
) or highest (
MAX
)
readings. Press the
MnMx/Reset
button once and
MIN
appears on the display. The
display is now showing the lowest humidity and temperature reading in memory. Press
the
MnMx/Reset
button again and
MAX
appears on the display. The display is now
showing the maximum humidity and temperature readings in memory. To exit the
MIN/MAX mode, press the
MnMx/Reset
button again and the
MIN
and
MAX
icons
disappear. To clear the current min/max readings in memory, press and hold the
MnMx/Reset
button for more than two seconds.
Data Hold
Press the
HOLD
button momentarily to freeze the displayed reading. The '
HLD
' icon will
appear on the upper right-hand side of the display. Press the
HOLD
button again to
return to normal operation.
Automatic Power OFF
The meter automatically shuts off after a programmed period of time. The default time is
10 minutes. To program the time period, press down the
HOLD
button while turning the
meter on. Continue to hold down both buttons and the meter will cycle through the
selectable power-off times: n, 2, 5, 10, 20, 40 or 60 minutes. “n” disables the auto power
off function. When the desired power-off time appears in the display, release both
buttons to select the time and return to normal operation.
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