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Offering both SDI12 and Modbus® interfaces, the Seametrics T1/T1R is a smart choice for upgrading to digital and replacing your analog temperature sensors. 

The T1/T1R’s rugged construction of 316 stainless steel, fluoropolymer, and PTFE resists weathering and data interferences, making it safe for long-term deployment. 

The T1 is easy to interface with SDI-12 recorders and can be daisy-chained on one cable up to 200 feet, making it a preferred choice for many environmental professionals with existing SDI-12 systems. 

The T1R is powered internally with two replaceable AA batteries. Alternately it can be powered with an external auxiliary power supply for data intensive applications. 

While most will use the T1R with our free, easy-to-use Aqua4Plus software, it is by no means limited to that software. 

You can use your own Modbus® RTU or SDI-12 software or logging equipment to read measurements, thus tying into your existing telemetry and control systems
Features
  • Measures temperature and time
  • Integrated datalogger optional
  • Easy export to spreadsheets and databases

Specifications

Weight

  • 0.8 lb (0.4 kg)

Body Material

  • 316 stainless

Wire Seal Material

  • Fluoropolymer and PTFE

Cable

  • Submersible: polyurethane, polyethylene, or ETFE (4 lb/100 ft., 1.8 kg/30 m)

Desiccant

  • 1-3 mm indicating silica gel

Field Connector

  • T1: Optional, T1R: Standard

Operating Range

  • Recommended: -5° to 70° C (23° to 158° F)

Storage Range

  • Without batteries: -40° to 80° C (-40° to 176° F)

Operating Voltage

  • 9-15 Vdc

Supply Current

  • Reading: 3 mA, Sleep: 250µA

Protection

  • Electromagnetic & transient: IEC-61000 - 4-3, 4-4, 4-5, 4-6

Internal Battery

  • Two lithium ‘AA’ batteries - Expected battery life: 18 months at 15 min. polling interval (may vary do to environmental factors)

Auxiliary

  • 12 Vdc - Nominal, 9-15 Vdc - range

Modbus®

  • RS-485 Modbus® RTU, output=32bit IEEE floating point

SDI-12

  • SDI-12 (ver. 1.3) - ASCII

Memory

  • 4MB - 520,000 records

Logging Types

  • Variable, user-defined, profiled

Logging Rates

  • 8x/sec maximum, no minimum

Baud Rates

  • 9600, 19200, 38400

Software

  • Complimentary Aqua4Plus

Networking

  • 32 available addresses per junction (Address range: 1 to 255)

File Formats

  • .a4d and .csv

Element

  • Digital IC on board

Accuracy

  • ± 0.2° C

Resolution

  • 0.06° C

Units

  • Celsius, Fahrenheit, Kelvin

Environmental

  • IP68, NEMA 6P

Documentation

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