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  UltraPen - PT5 Dissolved Oxygen and Temperature Pen
UltraPen - PT5

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ULTRAPEN PT5 Dissolved Oxygen and Temperature Pen

High Performance Features
  • Industry Leading Accuracy
  • Adjustable for Altitude and Salinity
  • 3 Calibration Methods: Air, Water and 0 ppm DO
  • Dynamic Membrane Temperature Correction
  • Easy to Use - One Button Control
  • Waterproof
  • Rugged Design with Aircraft Aluminum Body
  • Proprietary Sensor Design

List Price: $329.00
Exclusive Online Price: $329.00

Availability:: Back Order

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Description Technical Specs

Data sheet available here: Ultrapen PT5 Datasheet

Need an operations manual? Find it here: Download Manual
ULTRAPEN PT5 Dissolved Oxygen and Temperature Pen.

Advanced features include highly stable microprocessor-based circuitry; automatic temperature compensation from 15C to 30C while in calibration mode; user-intuitive design; and waterproof housing. A true one-handed instrument, the PT5 is easy to calibrate and easy to use. To take a measurement, you simply push a button then dip the PT5 in solution. .This instrument is designed to be extremely accurate, fast and simple to use in diverse water quality applications.


  • Hold - Displays real-time readings until stable or 3 minutes, which ever comes first, then displays final readings.
  • LIVE - Displays real-time readings continuously for up to 5 minutes.

  • DO - Default Display alternates between DO Concentration in ppm, DO Saturation in % and Temperature.
  • DO - Concentration Display alternates between DO Concentration in ppm and Temperature.
  • DO - Saturation Display alternates between DO Saturation in % and Temperature.

  • Measurement Range: DO Concentration: 0 - 20 ppm, DO Saturation 0 - 200%
  • Temperature: 0 - 71 C / 32 - 160 F
  • Accuracy: DO: 2% of Reading, Temperature: 0.1C / 0.1F
  • Repeatability: DO: 1% of Reading, Temperature: 0.1C / 0.1F
  • Resolution: DO Concentration: 0.01 ppm, DO Saturation 0.1%
  • Temperature 0.1C / 0.1F
  • Altitude Adjustment: -2,000 ft to 15,000 ft: increments of 100 ft
  • Salinity Adjustment: 0 - 50 ppt increments of 1 ppt
  • Time to Reading Stabilization: 10 - 180 seconds
  • Active Mode Power Consumption: Active Mode: 33 - 140 mA, Sleep Mode: 2 A
  • Temperature Adjustment for Membrane permeability: Automatic
  • Physical Dimensions: 17.15 cm L x 1.59 cm D or 6.75 in. L x .625 in. D
  • Weight: 57.4 g or 2 oz
  • Case Material: Anodized Aluminum with Protective Coating
  • Battery Type: N type, Alkaline 1.5 V
  • Calibration Methods: 1 or 2 Point; 0 ppm DO Calibration Solution and/or air or water
  • Operating Temperature: DO Saturation: 0 - 60C / 32 - 140F: DO Concentration: 0 - 40C / 32 - 104F
  • Storage Temperature: 0 - 55C / 32 - 131F
  • Water Resistance: IP67 and NEMA 6
  • EN61236-1: 2006 - Annex A: 2008;
  • 1999/5/EC Annex III
  • Electrostatic discharge to case of instrument may cause PT5 to spontaneously power on. In this case, the PT5 will power off after several seconds

What's Included
  • Package Includes:
    PT5 Pocket Tester Pen - Battery Installed
    Protective Cap
    Pocket Clip
    Operating Instructions

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