The durable HOBO Water Temp Pro v2 has 12-bit resolution and a precision sensor for ±0.2°C accuracy over a wide temperature range. This new v2 version has twice the memory, a convenient Optic USB Base Station, and works with the new HOBO Waterproof Shuttle or HOBO U-Shuttle. Designed with a durable streamlined case for extended deployment in fresh or salt water, the Water Temp Pro is equipped with an Optic interface for data offload in the field, even when the logger is wet.

Specifications

• Measurement Range: -20° to 50°C (-4° to 122°F) in water; –20° to 70°C (-4° to 158°F) in air
• Waterproof: To 120 m (400 ft)
• Accuracy: ±0.2°C at 0 to 50°C (± 0.36°F at 32° to 122°F)
• Resolution: 0.02°C at 25°C (0.04°F at 77°F)
• Time accuracy: ±1 minute per month
• Capacity: Approximately 42,000 12-bit measurements

Features

• Accurate:
  • 12-bit resolution and precision sensor for ±0.2°C accuracy over 0° to 50°C (±0.36°F accuracy over 32°F to 122°F)
• Real-time clock for better than ±1 minute per month time accuracy
  Easy to Use:
  • High-speed optic USB interface offloads full logger <30 seconds
  • Programmable start time/date
  • User-selectable sampling interval: 1 second to 18 hours
  • Uses popular HOBOware® software for system launch and data retrieval
  • HOBO Waterproof Shuttle or HOBO U-Shuttle for convenient in-field data readout and logger relaunch (HOBO Waterproof Shuttle can also be used as a base station)
• Reliable:
  • Factory-replaceable battery lasts 6 years (typical); temperature extremes will reduce battery life
  • Battery level indication at launch
  • Offload data, check logger and battery status while logging using HOBOware
  • Non-volatile EEPROM memory retains measurements even if battery fails
  • Blinking LED confirms operation
  • UV-stable plastic for long-term immersion in fresh or salt water*
  • Rugged, streamlined case design withstands years of use in stream conditions
  • Rated for use up to 50°C in water, 70°C in air
  • The dark gray case blends in, minimizing chances of tampering
  • Optional protective boot for high water flow, flooding, or conditions with debris

Detailed Specifications

• Response Time: 5 minutes in water, 12 minutes in air moving 2 m/sec, typical to 90%
• Memory modes: Stop when full
• Data offload: Readout full logger in < 30 seconds while logging or when stopped
• Wetted materials: polypropylene, stainless steel, EPDM O-ring
• Buoyancy: +13 g (0.5 oz) (fresh water at 25°C); +17 g (0.6 oz) with optional boot
• Battery : One 3.6 V Lithium, factory replaceable ONLY
• Battery Life: 6 years typical, temperature extremes reduce battery life
• Drop proof to 1.5 m (5’)
• Size/weight: 11.4 x 3.0 cm (4.5 x 1.19") with 6.4 mm (0.25") hole in mounting bail; 42 g (1.5 oz)

Note: NIST-traceable certification is available through Onset at additional cost.

Optic USB Base Station

• Optic USB Base Station offloads full logger in less than 30 seconds
• Optical interface to logger eliminates unreliable connectors
• Easy USB connection to PC
• Operating Range: 0° to 50°C (32° to 122°F);
  0 to 95% RH, non-condensing, non-fogging

HOBO Water Temp Pro Protective Boot The optional protective boot is designed for particularly harsh conditions. The thermoplastic elastomer boot is available in black to minimize visibility underwater or white for minimum solar radiation absorption.

Ordering Information

Note: HOBOware software and an Optic USB Base Station are required for operation of the HOBO Water Temp Pro v2. The HOBO Waterproof Shuttle can also be used as a base station.