HT-4000 Thermo-hygrometer

This Thermo-hygrometer HT-4000 has the same fast acclimating RH/T sensor found in our popular Navigator Pro and TotalCheck 3‑in‑1 moisture meters.

The HT‑4000 Thermo‑hygrometer is backed by industry use in HVAC, building science, and moisture control work where accurate humidity and temperature measurements are critical. Scientific evaluations of thermo‑hygrometers indicate that fast acclimation sensors like those in the HT‑4000 help professionals reduce measurement error and increase consistency when tracking environmental conditions over time. Independent reviews from contractors and technical reviewers highlight the HT‑4000’s reliability, ease of use, and clear digital readout compared to similar handheld humidity/temperature meters. Common uses for this thermo‑hygrometer include monitoring indoor air quality, verifying jobsite conditions during moisture mitigation, and assisting in HVAC system diagnostics, with many users reporting rugged construction and long‑term durability in construction and service applications.

Overview

For contractors and technicians who prefer separate meters rather than a single combination tool, the HT‑4000 provides a dedicated humidity and temperature meter with performance characteristics suited to a wide range of professional environments.

Features - Thermo‑hygrometer

• Bright, clear digital display for easy reading in varied lighting conditions.
• Relative Humidity Range: 0% to 100% for comprehensive humidity assessment.
• Temperature Range: -40°F to 255°F (-40°C to 124°C) to handle extreme conditions.
• Dew Point Range: -40°F to 176°F (-40°C to 80°C) to support dew point calculations.
• GPP Range: 0.1 to 3820 GPP (Grains Per Pound) useful for moisture content analysis.
• GPK Range: 0.01 to 545 GPK (Grains Per Kilogram) for international unit preference.
• Vapor Pressure Range: 0 to 7 PSI (Pounds Per Square Inch) for pressure‑based humidity parameters.
• Vapor Pressure Range: 0 to 47 KPA (Kilopascals) for metric vapor pressure measures.
• Built‑in backlight makes reading in dim or dark workspaces simple.
• Auto shut‑off timer conserves battery life during idle periods.
• Reading HOLD Feature allows locking values on screen for later reference.
• Compact Size: 8½” x 3⅜” x 1¾” for easy handling and storage.
• Weight: 11 oz. for comfortable handheld use.
• Rugged construction ensures years of reliable performance in demanding environments.
• Sturdy plastic carrying case protects the meter during transport.
• Includes 9V battery for immediate operation.

Q&A

What does the HT‑4000 Thermo‑hygrometer measure?

The HT‑4000 measures relative humidity, temperature, dew point, grains per pound (GPP), grains per kilogram (GPK), and vapor pressure in both PSI and KPA units, supporting comprehensive environmental monitoring.

Is the display readable in low light conditions?

Yes, the built‑in backlight ensures the digital display remains easy to read even in dim or poorly lit spaces.

Can this meter be used for HVAC and building diagnostics?

Yes, the HT‑4000 is commonly used by HVAC professionals and building inspectors to assess air quality, humidity levels, and environmental conditions on job sites.

Does the HT‑4000 include a case and battery?

Yes, the unit comes with a sturdy plastic carrying case and a 9V battery so you can start using it right away.