Go Direct^® Surface Temperature Sensor (GDX-ST)

Specifications and User Guide

Troubleshooting

General: Press the power button on the sensor to turn it on. Connect your sensor as described in the Getting Started instructions for your device.

• Primary Test: Hold the tip of the sensor in your hand and check for the temperature readings to change.

Additional Troubleshooting

• What is the difference between a Go Wireless sensor and a Go Direct sensor?
• Go Direct Temperature sensor reports a constant non-zero value.
• My Go Direct Temperature is stuck at 0°C

Specifications

• Range: –25 to 125°C
• Maximum Temperature without causing damage: 150°C
• Handle range: –10 to 45°C
• Accuracy: ±0.5°C
• Response time (time from 25°C to 100°C in water): 5 seconds
• Probe dimensions
  ⚬ Probe handle: length 6.8 cm, maximum width 2.25 cm, thickness 1.3 cm
  ⚬ Cable length: 1 m
  ⚬ Submergible section: 7 cm
• Connections
  ⚬ Wireless: Bluetooth^® v4.2 (wireless range 30 m unobstructed)
  ⚬ Wired: USB 2.0 full speed
• Battery: 300 mA Li-Poly
  ⚬ Battery Life (single, full charge): ~24 hours continuous data collection
  ⚬ Battery Life (lifetime): 2 – 5 years (typical)

Important: For use in air and water only. For temperature measurements in harsher environments that require a more durable probe, we recommend the Go Direct^® Temperature Probe (GDX-TMP).

Calibration

Calibrate? No. Each sensor is carefully calibrated during the manufacturing process. This sensor cannot be calibrated by the user.

Battery Troubleshooting

1. If the sensor can be turned on when connected by USB but not when disconnected from USB, the battery either needs charging or has reached its end of life and can no longer hold a charge.
   ⚬ First, try charging the sensor for several hours.
2. If the sensor still won’t turn on when disconnected from USB, try swapping the battery with a working sensor to see if the problem follows the battery or stays with the sensor.
   ⚬ If the problem stays with the sensor, the battery is probably not the issue.
   ⚬ If the problem follows the battery, the battery has likely reached its end of life.
3. If you intend to use this sensor wirelessly, its battery will need replacing.
   Go Direct® 300 mAh Replacement Battery (GDX-BAT-300)
4. See How do I replace the battery in a Go Direct Wand-Style Sensor? for more information (including a video).

Rechargeable batteries are covered by a one-year warranty.
Batteries should last two to five years in typical use.