DeFelsko PosiTector DPM L Dew Point Meter Logger

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DeFelsko PosiTector DPM L Dew Point Meter Logger

Fast response, precision sensors provide accurate, repeatable readings

Environmentally sealed enclosure – weatherproof, dustproof, and shockproof - meets or exceeds IP65

Internal memory storage of 10,000 datasets (60,000 readings)

The DeFelsko PosiTector DPM L Dew Point Meter Logger is a magnetic probe that attaches to steel structures for monitoring climatic conditions.

Measures and records climatic conditions including: relative humidity, air temperature, surface temperature, dew point temperature, difference between surface and dew point temperatures, and wet bulb temperature.
Fast response, precision sensors provide accurate, repeatable readings
Environmentally sealed enclosure – weatherproof, dustproof, and shockproof - meets or exceeds IP65
Internal memory storage of 10,000 datasets (60,000 readings)

Conforms to ISO 8502-4, BS 7079-B4, ASTM D3276, IMO PSPC, SSPC-PA7 and US Navy NSI 009-32

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Kit Contents
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The DeFelsko PosiTector DPM L Dew Point Meter Logger Kit includes everything needed for testing:

PosiTector DPM L Dew Point Meter Logger DPML
Two CR2032 coin cell batteries
Air/surface temperature sensors, RH sensor
Long Form Certificate of Calibration traceable to NIST
Storage container and instructions
Two (2) year warranty

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Features
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Attaches to steel structures to measure and record environmental parameters independently for up to 200 days. Stored datasets can be downloaded using a PosiTector Advanced gage body or Apple/Android smart device.
Records parameters at user selected intervals from 1 min. to 8 hrs.
Environmentally sealed enclosure—weatherproof, dustproof, and shockproof—meets or exceeds IP65
Fast response precision sensors provide accurate, repeatable readings
Internal memory storage of 10,000 datasets (60,000 readings)
Kensington Security Slot for anti-theft protection. PosiTector DPM L Lock sold separately.
Uses common lithium coin cell batteries (CR2032)
Every stored dataset is date and time stamped
Certificate of Calibration showing traceability to NIST included
Conforms to national and international standards including ISO and ASTM
Two year warranty

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Advanced Features
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PosiTector App and PosiTector Advanced

Display and record climatic parameters from remote (wireless) PosiTector DPM L probes
Automatically download readings once connected via Bluetooth 4.0 Technology (Bluetooth Smart)
View live measurement data on screen
Alarms indicate when climate conditions exceed user-selectable parameters
Smart TrendTM indicators identify rising falling or stable readings
Easily create reports and manage data with PosiSoft software

PosiTector App

An easy-to-use mobile app (iOS/Android) that wirelessly connects to PosiTector DPM L Smart Probes.
Automatically generate user-formatted reports and share via email, text, cloud storage services like Dropbox, and more
Easily synchronizing readings with PosiSoft Desktop software via PosiSoft.net

PosiTector Advanced

NEW Storage of 250,000 readings from multiple probes in up to 1,000 batches
On-screen graphing of measurement data
Alarms indicate when climate conditions exceed user-selectable parameters
Includes the entire PosiSoft Suite of solutions for analyzing and reporting data
View and print readings and graphs using universal PC/Mac web browsers and file explorers

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Specifications
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	Range	Accuracy	Resolution
Surface Temperature	-40° to 80° C 80° to 190° C -40° to 175° F 175° to 375° F	± 0.5° C ± 1.5° C ± 1° F ± 3° F	0.1° C 0.1° F
Air Temperature	-40° to 80° C -40° to 175° F	± 0.5° C ± 1° F	0.1° C 0.1° F
Humidity	0 to 100%	± 3%	0.1%
Dew Point	-60° to 80° C -76° to 175° F	± 0.3° C* ± 5.4° F*	0.1° C 0.1° F

* Dependent on RH. See Dew Point (Td) Accuracy for more information.

Size	Ø50 mm x 38 mm (Ø2" w x 1.5" h)
Weight	50 g (1.8 oz.) without battery
Operating Range	-10° to 60° C
Memory	10,000 datasets @ 5 min interval = 34 days @ 10 min interval = 68 days
Logging Measurement Interval	Adjustable from 1 min – 8 hours
IP Rating	65
Battery Life^	@ 5 min interval = 120 days @ 1 hour interval = 200 days

^ The stated battery life is for unattended logging. Battery life is reduced while connected to the PosiTector App or instrument.

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PosiSoft Suite of Software
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Four FREE and unique ways to view and report your PosiTector and PosiTest data. Learn More

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Related Products
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DeFelsko PosiTector DPM

Measures and records climatic conditions

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Kensington Lock

Optional Kensington Lock keeps the PosiTector DPM L safe and secure

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Downloads
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DeFelsko PosiTector DPM L Dew Point Meter Logger - Quick Guide

DeFelsko PosiTector DPM L Dew Point Meter Logger - Data Sheet

DeFelsko Accessories for Inspection Instruments - Online Catalog

F.A.Q.

Do your instruments require any formal training for use? Do you offer ‘demo’ models?

No. Our instruments are designed for simple operation, feature easy-to-use menus, both full and quick instruction manuals, and helpful videos. In lieu of demonstration models, we provide unlimited technical support via telephone and/or email, and a limited 30-day money back guarantee.

How often should the PosiTector probe be recalibrated?

PosiTector probes include a Certificate of Calibration with no expiry or end date. They have no shelf life, therefore the length of time in the field is not a good indicator for recalibration intervals. Many organizations with quality programs and recertification programs require annual recalibrations, and this is a good starting point for most users. DeFelsko recommends that customers establish calibration intervals based upon their own experience and work environment. Based on our product knowledge, data and customer feedback, a one year calibration interval from the date the instrument was placed in service is a good starting point.

Is the DeFelsko PosiTector DPM L calibrated at the factory?

The DeFelsko PosiTector DPM L arrives fully calibrated and ready to measure. A Long-Form Certificate of Calibration traceable to NIST or PTB is included, which documents actual readings taken by your instrument at our calibration laboratory on standards traceable to a national metrology institute. Beware of ‘Certificates’ or ‘Certificates of Conformance’ offered by competitors. These typically do not include actual instrument readings, and are often insufficient to meet common quality requirements.

Does the DeFelsko PosiTector DPM L provide a wet-bulb temperature measurement?

Yes. When combined with either a PosiTector Advanced gage body or iOS/Android smart device, the DPM L will indicate a wet-bulb temperature measurement.

Is the DeFelsko PosiTector DPM L suitable for applications with low or negative dew point temperatures?

The DeFelsko PosiTector DPM L provides accurate dew point readings (±3° C) down to -40° C.

Dew point is a calculated value, based on temperature and humidity. At low negative dew point temperatures, the calculation is highly dependent on relative humidity and changes of ±3% RH (the tolerance of the PosiTector DPM’s humidity sensor) can have a significant impact on the dew point temperature.

The Dew Point (Td) Accuracy page details the accuracy of the calculated dew point temperature based on the measured temperature and humidity.

How long does it take the logger to acclimate, and provide accurate readings in a new environment?

The DeFelsko PosiTector DPM L, like other electronic dew point meters, requires adequate time to acclimate to its operating environment. When moving between similar environments, the instrument will stabilize in a matter of seconds. However, when moving between environmental extremes (like between a dry, air conditioned vehicle and the warm, humid outdoors) it can take up to 30 minutes for readings to stabilize.

If left in a dry environment for an extended period of time, this stabilization process may take longer. To restore the original response time, wrap the sensor in a damp cloth overnight.

Is the DeFelsko PosiTector DPM L suitable for logging temperatures inside an oven?

No. We do not recommend our PosiTector DPM L for operation in an oven. Delicate internal components and assembly materials are prone to premature damage when subjected to prolonged use in a closed environment with temperatures greater than approximately 50° C (122° F).

How long does the battery last on a DeFelsko PosiTector DPM L?

Depending on the logging interval, the battery on a PosiTector DPM L can last several months. For example, at 5 minute intervals the logger will last 120 days. At 1 hour intervals, the PosiTector DPM L will last 200 days. The stated battery life is for unattended logging. Battery life is reduced while connected to the PosiTector app or instrument.

What is the operating temperature range of the DeFelsko PosiTector DPM L?

The operating temperature range of the DeFelsko PosiTector DPM L is -10 to 60° C (14 to 140° F).

ADD TO CART THE ITEMS YOU WOULD LIKE TO PURCHASE
DeFelsko PosiTector DPM L Dew Point Meter Logger	$485.00
DeFelsko DPMLLOCK Kensington Lock PosiTector DPM L Lock Kit	$65.00

ADD TO CART THE ITEMS YOU WOULD LIKE TO PURCHASE

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DeFelsko PosiTector DPM L Dew Point Meter Logger

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