Ambient Weather WS-HE01

Questions and Answers

J
John RiveraJul 28, 2025
Why does the temperature/heat index appear high on my Ambient Weather Measuring Instruments?
- D
  Derrick McgeeJul 28, 2025
  If your Ambient Weather Measuring Instruments display reads high for temperature or heat index, it might be due to direct sunlight exposure. Full sunshine can increase heat index values by up to 15°F. To resolve this, take your readings in a shaded area if possible.
J
James RyanAug 8, 2025
What to do if temperature or humidity is inaccurate on Ambient Weather Measuring Instruments?
- S
  Stacie BradleyAug 8, 2025
  If the temperature or humidity readings on your Ambient Weather Measuring Instruments are inaccurate, use the humidity and temperature calibration to match your calibration source.
J
Julia CollinsAug 17, 2025
How to fix weak display console contrast on Ambient Weather WS-HE01 Measuring Instruments?
- S
  Sally RussoAug 17, 2025
  If the display console contrast on your Ambient Weather Measuring Instruments is weak, replace the console batteries with a fresh set of batteries.

Summary

Display Settings

Display Console Layout

Illustrates the full segments of the LCD for description purposes only.

Set Mode

Instructions for setting time and units of measure.

Heat Index Alarm Set Mode

Procedure to set the Heat Index alarm set point.

Heat Index Alarm Operation

How to turn the Heat Index alarm on and off.

Temperature, Heat Index and Dew Point Display

How to switch the display between temperature, heat index, and dew point.

Calibration Adjustment Mode

Procedure to fine-tune or correct sensor errors for temperature and humidity.

Specifications

Measurement Specifications

Provides specifications for measured parameters like range, accuracy, and resolution.

Power Consumption

Details the battery requirements and expected battery life.

Summary

Display Settings

Display Console Layout

Illustrates the full segments of the LCD for description purposes only.

Set Mode

Instructions for setting time and units of measure.

Heat Index Alarm Set Mode

Procedure to set the Heat Index alarm set point.

Heat Index Alarm Operation

How to turn the Heat Index alarm on and off.

Temperature, Heat Index and Dew Point Display

How to switch the display between temperature, heat index, and dew point.

Calibration Adjustment Mode

Procedure to fine-tune or correct sensor errors for temperature and humidity.

Specifications

Measurement Specifications

Provides specifications for measured parameters like range, accuracy, and resolution.

Power Consumption

Details the battery requirements and expected battery life.

The Ambient Weather WS-HE01 is a Heat Index Monitor designed to provide real-time measurements of temperature, humidity, and dew point, along with a calculated heat index. This device is intended for home use to indicate weather conditions and is not for medical or public information purposes.

Function Description:

The primary function of the WS-HE01 is to monitor and display environmental conditions relevant to human comfort and safety, specifically focusing on the heat index. The heat index, often referred to as the apparent temperature, measures how hot it truly feels when relative humidity is factored with the actual air temperature. The device also displays the current temperature, relative humidity, and dew point. An important safety feature is the Heat Index Alarm, which can be set to alert users when the heat index reaches a predefined threshold, indicating conditions that may cause heat-related disorders. The display console features a clear LCD layout with indicators for different heat index ranges (Caution, Extreme Caution, Danger, Extreme Danger) to visually communicate the severity of conditions.

Important Technical Specifications:

Measurement Range:
- Temperature: 14 to 140 °F
- Humidity: 20 to 99%
Accuracy:
- Temperature: ± 2 °F
- Humidity: ± 5%
Resolution:
- Temperature: 0.1 °F
- Humidity: 1%
Power Consumption:
- Batteries: 2 x AAA 1.5V Alkaline or Lithium batteries (not included)
- Battery Life: Approximately one year
Display: LCD with segments for temperature, heat index, dew point, relative humidity, time of day, and heat index range indicators.
Units of Measure: Temperature can be displayed in °F or °C.
Out-of-Range Indication: "LL" for out of range low, "HH" for out of range high.

Usage Features:

Easy Setup: The device requires the insertion of two AAA batteries into the back of the sensor.
Display Modes: Users can switch the main display between temperature, heat index, and dew point readings by pressing the SET button.
Time Setting: The device allows setting the time in either 12-hour or 24-hour format, including the hour and minute of the day.
Temperature Units: Users can select between Fahrenheit (°F) and Celsius (°C) for temperature display.
Heat Index Alarm:
- Setting: The heat index alarm set point can be configured by pressing and holding the ALARM button. The + and ALARM buttons are used to adjust the value.
- Activation: The alarm can be turned on or off by a single press of the ALARM button, indicated by an alarm icon on the display.
Calibration Adjustment Mode: This advanced feature allows users to fine-tune temperature and humidity readings to correct for sensor errors.
- Temperature Calibration: Press and hold the SET button for 9 seconds to enter calibration mode. The + and ALARM buttons are used to adjust the temperature.
- Humidity Calibration: After confirming temperature calibration, the humidity will begin flashing, allowing adjustment using the + and ALARM buttons.
- Calibration Discussion: The manual emphasizes the importance of using a known calibrated source (e.g., fluid thermometer, sling psychrometer, or humidpak calibration kits) for accurate calibration, rather than comparing to internet or local weather station readings, which can vary significantly. It also notes that temperature errors can occur if the sensor is too close to heat sources, and humidity can drift over time due to contamination.

Maintenance Features:

Battery Replacement: The device is powered by two AAA batteries, which need to be replaced approximately once a year. The manual provides clear instructions for accessing the battery compartment.
Troubleshooting Guide: A dedicated section in the manual addresses common issues such as weak display contrast, inaccurate temperature/humidity readings, and high heat index readings, offering solutions like battery replacement and calibration.
Calibration: While a usage feature, calibration also serves as a maintenance aspect, allowing users to maintain the accuracy of their device over time, especially for humidity sensors which can drift.
Environmental Responsibility: The manual encourages users to return used batteries to an authorized depot and dispose of electronic waste responsibly to protect the environment.

The Ambient Weather WS-HE01 is a practical device for monitoring environmental conditions, providing essential information for personal comfort and safety, particularly in hot and humid climates. Its user-friendly interface, combined with calibration capabilities, ensures reliable performance for home use.