DeFelsko PosiTector DPM Manuel utilisateur

Quick Guide . 3.6

PosiTector®

DPM

Dew Point Meter

Introduction

The PosiTector Dew 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. 2).

This Quick uide summarizes the basic functions of the age.

Download the full instruction manual at:

www.defelsko.com/manuals.

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

1.Remove the protective rubber cap from the probe.

2.Power-up age by pressing the center navigation button.

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)

(A vance mo els only)

V - Wind Velocity (DPM-A mo el 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.

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 age 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. See www.defelsko.com/probes

Probes

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.

Menu peration

Scroll through

Trend Charts

(A vance only)

Access the Menu

Pause / Resume

Restore brightness

after dimming

Button Functions- Normal peration

age functions are menu controlled. To access the Menu, power-up

the age, then press the center navigation button.

To navigate, use the Up and Down buttons to scroll vertically and

to SELECT.

Press the (+)button to switch

pages in a multipage menu.

Press the (

)button to return to

the previous menu or page.

Select Exit to exit from any menu.

(Exit) Up Next Page

Access the Menu

(Center/Select)

Down

Standard 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.

Ad anced 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

PosiTector DPM probes:

PosiTector DPM / DPM-IR

Integral Surface Temperature Sensor

PosiTector DPM-S

Magnetic Surface Temperature Sensor

PosiTector DPM-A Anemometer

Integral Surface Temperature Sensor

PosiTector DPM-D

Cabled probe with NPT threads

K-Type

Connector

Surface

Temperature

Win

Velocity

Air Temperature &

Relative Humi ity

Surface

Temperature / IR

Sensor

Surface

Temperature

Probe also accepts other K-Type

thermocouple sensors (optional)

1/2” NPT

Threa s

Sintered Metal Tip

(protects sensor)

Air Temperature &

Relative Humi ity

Air Temperature &

Relative Humi ity

Setup Menu

Reset

Reset (menu reset) restores factory settings and returns the age

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

Bluetooth & Stream = OFF

WiFi & Access Point = OFF

Display = None

Anemometer = ON

Units

Converts the displayed units for temperature and wind velocity.

Temperature (all mo els): Celsius (°C) or Fahrenheit (°F)

Velocity (DPM-A only): m/s, ft/s, km/h, mph, and kn.

Perform a more thorough Hard Reset as follows:

1 Power down the age and wait 5 seconds.

2 Simultaneously press and hold the (+) and center

buttons until the Reset symbol appears.

This returns the age to a known, “out-of-the-box” condition.

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 Display = Normal

Auto Sync .net = ON

Alarms = OFF

Alarm Sound = OFF

Sound = ON

Language = English

Units (velocity) = m/s

Battery Type = Alkaline

Backlight = Normal

Bluetooth Smart = OFF

USB 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 RH using an air pressure

of 1.0 atmospheres (1013 mbar). Variations of Tw at other

pressures could be greater than ±1°C (±2°F).

(A vance mo els 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 Up button to scroll through the trend charts.

Trend Chart

Shortcut:

(A vance mo els only)

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:

Sli e cover own 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 Humi ity

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 - Steel ( xidized) = 0.95

- Concrete = 0.54 - Wood = 0.95

- Paint = 0.96

Emissivity (PosiTector DPM-IR Mo els Only)

Selects the type of batteries used in the age from a choice of

“Alkaline”, “Lithium” or “NiMH” (Nickel-metal hydride

rechargeable). If NiMH is selected, the gage will trickle charge the

batteries while connected via USB to a PC or optional AC charger.

The battery state indicator icon is calibrated for the selected

battery type. No damage will occur if the wrong battery type is

selected.

Battery Type

Ad anced models store 100,000 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.

Auto Log Mode

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 age is set to store datasets.

Standard models store up to 2,500 datasets in one batch.

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

(A vance only)

Screen Capture

Press both (-)(+) buttons at any time to capture and save an image

copy of the current display. The last 10 screen captures are stored

in memory and can be accessed when connected to a computer

(see PosiSoft USB Drive pg. 8).

Scroll through display

modes (A vance only)

Delete last reading

Access the Menu

Store a dataset in memory

(A vance only)

Restore brightness after

dimming

Standard models remain powered-up while in auto log mode. The

instrument will take readings for 40-50 hours on a set of alkaline

batteries, depending on the frequency of measurements.

Ad anced 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 8,000 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:

Accessing Stored Measurements Data

DeFelsko offers the following free solutions for viewing, analyzing

and reporting data:

PosiSoft USB Drive - Connect the age to a PC/Mac using the

supplied USB cable. View and print readings and graphs using

universal PC/Mac web browsers or file explorers. No software or

internet connection required. USB Drive must be selected in the

age’s “Connect > USB” menu (pg. 8).

PosiSoft Desktop - Powerful desktop software (PC/Mac) for

downloading, viewing, printing and storing measurement data.

Includes a customizable, templated PDF Report enerator. No

internet connection required.

PosiSoft.net - Web-based application offering secure, centralized

storage of measurement data. Access your data from any web-

connected device.

PosiTector App - (A vance mo els only, s/n 784000+) 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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