Quick Guide

1
Introduction
Introduction
T
he
P
o
siT
ec
to
r
D
ew
P
o
in
t
M
e
ter
(D
P
M
)
is
a
h
a
nd-held,
el
ec
t
r
onic
ins
t
r
ument
t
hat
meas
ur
es
,
c
al
c
ulat
es
and
r
ec
or
ds
cl
i
m
at
i
c condi
t
i
ons,
qui
ckl
y and accur
at
el
y
.
I
t
consi
st
s of
a body
(
St
andar
d or
Advanced)
and pr
obe (
Bui
l
t
-
I
n or
Separ
at
e)
.
Thi
s Qui
ck
Gui
de sum
m
ar
i
zes t
he basi
c f
unct
i
ons of
t
he Gage.
Downl
oad t
he f
ul
l
i
nst
r
uct
i
on m
anual
at
:
www.
def
el
sko.
com
/
m
anual
s.
The PosiTector DPM powers-up when the center navigation
button is pressed. Readings are updated automatically each
second. To preserve battery life, the instrument powers down after
approximately 5 minutes of no activity. All settings are retained.
Quick Start
Quick Start
1. Remove the protective rubber cap from the surface
temperature sensor.
2. Power-up Gage by pressing the center navigation button.
Scroll through
Trend Charts
(Advanced only)
Access the Menu
Pause / Resume
Restore brightness
after dimming
(Advanced only)
Button Functions- Normal Operation
RH
- Relative Humidity (measured)
Ta - Air Temperature (measured)
Ts - Surface Temperature (measured)
Td - Dew Point (calculated)
Ts-Td - Surface minus Dew Point
Temperature (calculated)
Tw - Wet Bulb Temperature (calculated)
(Advanced Models Only)
A typical instrument screen is shown below, consisting of RH, Ta,
Ts, Td, and Ts-Td readings. This group of readings is referred to as
a dataset.