DeFelsko PosiTector DPM Manuale utente
Instruction Manual
PosiTector®
DPM
Dew Point Meter
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1
Introduction
Introduction
The PosiTector De Point Meter (DPM) is a hand-held,
electronic instrument that measures, calculates and records
climatic conditions, quickly, and accurately. It consists of a body
(Standard or Advanced) and probe (pg. 3).
1.Remove the protective rubber cap from the probe.
2.Power-up Gage by pressing the center navigation button.
RH - Relative umidity (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)
V - Wind Velocity (DPM A model only)
A typical instrument screen is shown below, consisting of R , Ta,
Ts, Td, and Ts-Td readings. This group of readings is referred to as
a dataset.
Press the button to power up the Gage. To conserve battery
life, the gage will automatically go to sleep after 5 minutes of
inactivity. While in leep Mode, the gage powers up significantly
faster— convenient when moving between parts or locations. The
gage will completely power off after 4 hours of inactivity.
Alternatively, select Power Off from the main menu. All settings
are retained.
Quick tart
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The Pause/Resume button stops values from automatically
updating to allow for closer examination of the relationship
between the values or to allow time to manually record the entire
dataset. Press again to resume.
Button Functions- Normal Operation
Menu Operation
To access the Menu, power-up the gage, then press the center
navigation button . Either the keypad or touch screen can be
used to navigate the menu. If desired, touch screen functionality
can be disabled within the Setup menu (See Touch, pg. 5).
Select a menu option by touching it, or use the and but-
tons to highlight the desired option and press to select it.
On menus longer than one page, the current page number is dis-
played below the menu name. Navigate between pages using
when the first menu item is selected, or when the last
menu item is selected. If using touch, navigate between pages
by touching or , or by swiping up or down.
Pause / Resume
Scroll through Trend
Charts (Advanced only)
Restore brightness
after dimming
Access the Menu
When a Menu option is highlighted, the
icon indicates on-gage help is available.
Press or touch the icon to display the
help.
indicates that a sub-menu exists for the
Menu option. Select the option to display its
sub menu.
Update your gage to ensure that you
have the latest on-gage help information.
NOTE:
Press the button or swipe right to return to a previous screen.
Select Exit to close the Menu.
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When powered-up, the PosiTector automatically
determines which probe is attached and does a
self-check.
To disconnect a probe from a body, slide the plastic
probe connector horizontally (in the direction of the
arrow) away from the body. Reverse these steps to
attach a different probe. It is not necessary to power-
down the Gage when switching probes.
The PosiTector body accepts a wide variety of probe types
including magnetic, eddy current, and ultrasonic coating thickness,
surface profile, hardness, salt contamination and ultrasonic wall
thickness probes.
Probes
Probes
PosiTector DPM probes:
PosiTector DPM A Anemometer
Integral Surface Temperature Sensor
PosiTector DPM D
Cabled probe with NPT threads
K-Type
Connector
Surface
Temperature
Wind
Velocity
Air Temperature &
Relative Humidity
Surface
Temperature / IR
Sensor
Surface
Temperature
Probe also accepts other K-Type
thermocouple sensors (optional)
1/2” NPT
Threads
Sintered Metal Tip
(protects sensor)
Air Temperature &
Relative Humidity
Air Temperature &
Relative Humidity
PosiTector DPM / DPM IR
Integral Surface Temperature Sensor
PosiTector DPM S
Magnetic Surface Temperature Sensor
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tandard models will alert the user when the surface temperature
is less than 3°C (5°F) above the dew point temperature. Enable by
selecting the tick box.
The PosiTector DPM can automatically alert the user when
current climatic conditions exceed pre-set values. When selected,
the Alarm icon is displayed at the the top of the screen.
Advanced models allow the user to set up custom alarm
conditions for each reading in a dataset. When connected to WiFi,
Advanced models can also send alerts via email.
Alarm Mode
Alarm Mode
Alarm
etup Menu
etup Menu
Units
Converts the displayed units for temperature and wind velocity.
Temperature (all models): Celsius (°C) or Fahrenheit (°F)
Velocity (DPM A only): m/s, ft/s, km/h, mph, or kn.
Reset
Reset (menu reset) restores factory settings and returns the Gage
to a known condition. The following occurs:
- All batches and stored datasets, batch names and screen
captures are erased.
- Menu settings are returned to the following:
Memory = OFF
Auto Log = OFF
Trend Chart = None
Auto Dim = ON
Display = None
Bluetooth & tream = OFF
WiFi & Access Point = OFF
U B Keyboard & tream = OFF
BLE Keyboard = OFF
Anemometer = ON
Perform a more thorough Hard Reset as follows:
1. Power down the Gage and wait 5 seconds.
2. Simultaneously press and hold the and buttons
until the Reset symbol appears.
This returns the Gage to a known, “out-of-the-box” condition.
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It performs the same function as a menu Reset with the addition of:
- Bluetooth Pairing info is cleared.
- Alarm settings are set to defaults.
- Menu settings are returned to the following:
NOTE:
Units (temperature) = Celsius
Flip Lock = OFF
Auto ync .net = ON
Alarms = OFF
Alarm ound = OFF
ound = Medium
Language = English
Touch = ON
Units (velocity) = m/s
Battery Type = Alkaline
Backlight = Normal
Bluetooth mart = OFF
U B Drive= ON
Auto Log Interval = 5 min
Wet Bulb = OFF
Date, Time and WiFi settings are not affected by either Reset.
Wet Bulb
When selected, the wet bulb temperature (Tw) is displayed on the
main screen. It is calculated from Ta and R using an air pressure
of 1.0 atmospheres (1013 mbar). Variations of Tw at other
pressures could be greater than ±1°C (±2°F).
(Advanced models only)
Displays a real-time graph of the readings over the last three
minutes. Use Trend Charts to monitor short-term environmental
changes and spot trends.
Press the button to scroll through the trend charts.
Trend Chart
Shortcut:
(Advanced models only)
Adjusts the volume of built-in speaker (Off, Low, Medium, igh).
ound
Disables the Auto Rotate feature by locking the display in its
current orientation.
Flip Lock
Allows the touch screen functionality to be disabled. All gage
functions can also be controlled using the navigation buttons.
Touch
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Anemometer (PosiTector DPM-A probes only)
When Enabled , the PosiTector DPM A
will display wind velocity (v) in the selected
unit of measure (see Units pg. 4).
NOTE:
Slide cover down to
expose hot wire
anemometer
Dew point (Td) and surface temperature (Ts) are not
displayed when the Anemometer is enabled.
Hot Wire Anemometer
Surface Temperature
Air Temperature &
Relative Humidity
6
All measurements are date and time stamped (24-hour format)
when stored into memory. It is therefore important to set the
correct date and time. Use the and buttons to select a
value, and the and buttons to adjust it. The current date
and time setting can also be viewed at the top of the main menu.
et Clock
Selects the type of batteries used in the Gage from a choice of
“Alkaline”, “Lithium” or “NiM ” (nickel-metal hydride rechargeable).
The battery state indicator symbol is calibrated for the selected
battery type. No damage will occur if the battery type used in the
Gage does not match the selected battery type.
Battery Type
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Sets the emissivity ratio for the PosiTector DPM IR infrared
temperature sensor.
Select from a User Entered Value or one of the following preset
options:
- Aluminum (rough) = 0.07 - Plastics = 0.94
- Zinc (Galvanized) = 0.25 - teel (Oxidized) = 0.95
- Concrete = 0.54 - Wood = 0.95
- Paint = 0.96
Emissivity (PosiTector DPM-IR Models Only)
Memory Management
Memory Management
The PosiTector DPM has internal memory storage for recording
measurement datasets. Stored datasets can be reviewed on-
screen or accessed via computers, tablets and smart phones.
Datasets are date and time-stamped. Datasets can be stored
manually (using the button), or automatically using the Auto Log
mode.
The symbol appears when the Gage is set to store datasets.
Standard models store up to 2,500 datasets in one batch.
Advanced models store 250,000 datasets in up to 1,000 batches.
“New Batch” closes any open batch and creates a new batch name
using the lowest available number. New batch names are date
stamped when they are created.
Store a dataset
into memory
Scroll through display
modes (Advanced only)
Delete last reading
Restore brightness
after dimming
Access the Menu
creen Capture
Press both and buttons simultaneously to save an image of
the current display. The last 100 screen captures are stored in
memory and can be accessed when connected to a computer
(see Posi oft U B Drive pg. 9).
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Auto Log Mode
Auto Log Mode
The PosiTector DPM can automatically display and record
datasets at user selected time intervals. When selected, the Auto
Log icon will appear on the display, with a countdown timer until
the next reading. Connect the instrument to a USB power source
for long-term use.
Turn on instrument/
Cancel Auto Log
mode
Scroll through
display modes
(Advanced only)
Standard models remain powered-up while in auto log mode. The
instrument will take readings for 50-60 hours on a set of alkaline
batteries, depending on the frequency of measurements.
Advanced models power down between readings to conserve
batteries. At each interval, the instrument will wake up, take a
reading, sync to PosiSoft.net (if configured) and power down. The
instrument can record approximately 10,000 datasets while in this
mode using alkaline batteries, and can be configured to Auto
Batch at daily, weekly, and monthly intervals.
-Auto Log continues recording until the instrument loses power or
the user turns off Auto Log mode. Stored datasets will remain in
memory until full, then the oldest dataset or batch will be overwrit-
ten to allow space for the next dataset.
-To conserve battery life, readings update only at the Log Interval.
The last recorded readings will remain on the display until the
next dataset has been stored.
-It is recommended that fresh alkaline batteries be installed prior
to an extended Auto Log if not connected to continuous power.
NOTES:
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Connect Menu
Allows connection to your local wireless network or mobile
hot spot. Ideal for using your network’s internet connection for
synchronizing stored measurements with Posi oft.net (above).
WiFi (Advanced models only)
When U B Drive is enabled , the PosiTector uses a USB
mass storage device class which provides users with a simple
interface to retrieve stored data in a manner similar to USB flash
drives and digital cameras. U B Drive is also required to import
stored measurements into Posi oft Desktop software (above).
U B
Accessing tored Measurement Data
DeFelsko offers the following free solutions for viewing, analyzing
and reporting data:
Posi oft U B Drive - Connect the Gage to a PC/Mac using the
supplied USB-C cable. View and print readings and graphs using
universal PC/Mac web browsers or file explorers. No software or
internet connection required.
Posi oft Desktop - Powerful desktop software (PC/Mac) for
downloading, viewing, printing and storing measurement data.
Includes a customizable, templated PDF Report Generator. No
internet connection required.
Posi oft.net - Web-based application offering secure, centralized
storage of measurement data. Access your data from any web-
connected device.
PosiTector App - (Advanced models only) App for compatible iOS
and Android smart devices. Permits users to create, save and
share professional PDF reports. Add images and notes using the
smart device’s camera and keyboard.
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