The next generation of moisture meters is here, with the introduction of the Navigator™ 

Series and EDGE ™app from Delmhorst. 


The HTX-30 all-purpose Thermo-Hygrometer is the latest product from the Delmhorst® Navigator® meter family. The hand-held HTX-30 has a quick response time, simple interface and provides useful statistics, making it the ideal tool for measuring air conditions in water damage restoration, building inspections, flooring installations and many other industrial and research applications. 

The HTX-30 measures Temperature and Relative Humidity. The meter calculates Vapor Pressure, Dewpoint, and Mixing Ratio. Through Bluetooth® Low Energy technology, the HTX-30 can connect to the EDGE™ app and share saved readings for further analysis. The EDGE™ app gives users the option to add names to each location and designate them as a location/room or dehumidifier. Additionally, users will be able to add notes to individual readings, view and filter all readings, and export readings to a CSV file. The HTX-30 makes the most challenging projects easier, less costly, and more efficient.

Where to Buy

Product Features

  • Delmhorst® EDGE™ app with Bluetooth® connectivity
  • Large, dashboard-like custom display with auto backlight – easy to read under all conditions
  • 3.5 mm probe connector for easy and durable connection
  • Measures
    • Relative Humidity (%RH) 
    • Temperature (°F, °C)
  • Calculates
    • Vapor Pressure (PSI, kPa)
    • Mixing Ratio (GPP, GPK)
    • Dewpoint (°F, °C)
  • Settings
    • Customize Read Screen Measurements
    • Bluetooth
    • Set Location Number (1-30)
    • Display Brightness
    • Display Contrast
    • Display Backlight
    • Display Timeout
  • Statistics On-screen readings statistics – High, Low, Average, Standard Deviation, view readings
    • Statistics can be filtered by location
    • Date and time of measurement
  • Includes sturdy plastic carrying case
  • Includes 1  RH/T probe, and 1 extension cable

Meter Specifications

  • Powered by 2 x AA batteries
  • QR code on meter for easy access to support materials
  • Size: meter only - 8.6in (220mm) x 2.9in (74MM) x 1.6in (41mm); in carry case - 10.5in (266.7mm) x 7.0in (177.8mm) x 2.5in (64mm)
  • Weight: meter only - (with batteries): 7.3oz (207g); in carry case weight: 13.6oz (386g)
  • Hard plastic carrying case - included
  • 2-year warranty on manufacturer defects. Bonus extend warranty with meter with on-line registration


Extended Probe (RH-T-XE)

Extended Probe (RH/T-XE)

Detachable, extended length sensor (2.5 in) for measuring Relative Humidity and Temperature. Useful for determining the psychrometric conditions in the output of dehumidifiers or other recessed areas. Connects via 3.5mm TRRS cable for easy and durable connection.  Order individually or in packs of 5.


Extension Cable (RH/T-C2)

3 foot long extension cable that connects the HTX-30 to the Short Probe or Long Probe, allowing users to view their meter screen while taking measurements in hard-to-reach areas.


Delmhorst offers a wide assortment of electrodes known throughout the industry for their durability. All Delmhorst electrodes fit any Delmhorst moisture meter. Below are electrodes that are typically used for this model:


Quick Start Guide



Owner's Manual



Tether Attachment Instructions



Moisture Meters 101 Guide

Finding the right kind of moisture detection equipment to meet your needs is a huge part of being able to anticipate how moisture conditions can affect your work.


Download the Complete Guide to Measuring Moisture in Restoration

Measuring Moisture in Restoration

Knowing the exact location and extent of moisture in a building is essential knowledge for restoration efforts. The full applications of moisture meters in restoration projects are described in this eGuide.


For more information, view our complete list of 
Moisture Meter Resources

EDGE™ Bluetooth app features – available with BDX-30 only

  • List of meter’s saved readings with timestamp and geotag
  • Graphical capability
  • Data export to .csv – full or selected data sets
  • Save unlimited readings
  • Access to expanded species/material selections
  • Customize LED ranges
  • Multi-languages in meter – English, Spanish, French, German, Italian, Russian
  • Species sets for international species
  • Use EDGE™ with smartphone or tablet.

Apple App Store:
Google Play  Store: