Vernier Software and Technology
Vernier Software & Technology

Temperature Monitor

Vernier Tempurature Sensor


Welcome to ABC Safety Products! As ABC’s newest mechanical engineer, you have been assigned to a design team to create a water temperature monitor. Your water temperature monitor will be used in baby bathing tubs or installed in aquariums for tropical fish. In both cases, it is very important to have a constant-temperature bath. For example, when bathing a newborn baby, the ideal temperature is 38°C, which is just a little over the baby’s body temperature. If the water temperature is much cooler, the baby will get chilled; if it is much warmer, the baby will overheat or might even be burned. Likewise, in an aquarium with tropical fish, the water temperature should stay between 25°C and 27°C. Cold water may not kill them right away, but it can leave them in a weakened and stressed state that opens up the door to all kinds of fish diseases. On the other hand, water that is too warm will carry less oxygen and could ultimately harm the fish.

Your marketing team has conducted focus groups with new parents and aquarium owners. Results show that people want to have a prominent visual display of the temperature. Additionally, they want some sort of feedback when the temperature is in the desired range, as well as when it is outside the desired range. They also want a clear warning when the temperature is dangerously high or low.

Your job is to create a prototype of a monitor for either an aquarium or a baby bathing tub using Vernier sensors, Logger Pro or a standalone LabQuest 2, and a variety of output devices (included in the Materials list).

Learning Objectives

  • Supplement classroom instruction of temperature and its effects with hands on engineering application.
  • Control devices (e.g., lights, motors, buzzers) based on input from measured physical quantities (e.g., temperature).

Reference Experiments

Vernier Lab Book Experiment
Physical Science with Vernier 1 Temperature Probe Response Time

Sensors and Equipment

Additional Materials

  • DC buzzer
  • DC/120 mA lamp
  • DC fan
  • DC motor
  • DC vibrating motor
  • Green LED (with resistor)
  • Red LED (with resistor)

Construction Materials

  • Duct tape
  • Cardboard
  • Felt sheets
  • Colored markers

Download Extension

The download includes student instructions, DCU tips, teacher information, and examples in PDF and Microsoft® Word® formats.

Temperature Monitor

About Engineering Extension Activities

Engineering Extension Activities provide a way to add an engineering component to a Vernier science experiment. Use sensor data and Logger Pro software (or LabQuest 2) to help solve an engineering problem.

See All Engineering Extension Activities »

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