EXTECH RH350 Digital Hygro Thermometer

Professional Humidity & Temperature Measurement Solution

The EXTECH RH350 Digital Hygro Thermometer is a professional-grade environmental measuring instrument designed to accurately monitor humidity, temperature, dew point, and wet bulb values. Ideal for HVAC professionals, laboratories, industrial facilities, and environmental monitoring, this multifunction device delivers reliable measurements for critical applications.

Featuring dual Type K temperature probe inputs, the RH350 allows simultaneous monitoring of multiple temperature sources while displaying relative humidity, air temperature, dew point, wet bulb temperature, or external probe readings on a clear digital display.

The built-in memory stores up to 99 data records, while the optional RS-232 interface enables convenient data transfer to a PC for analysis and reporting. Supplied with two Type K bead wire probes and batteries, the RH350 is ready for immediate field or laboratory use.

✅ Key Features

• Measures humidity and temperature
• Displays dew point and wet bulb temperature
• Dual Type K temperature probe inputs
• Simultaneous multi-parameter display
• Superheat differential measurements
• Memory for up to 99 data records
• RS-232 data output capability
• High measurement accuracy
• Easy-to-read digital display
• Portable handheld design
• Ready for field and laboratory use
• Includes two Type K probes and batteries

✅ Product Specifications

Product Name

EXTECH RH350

Product Type

Digital Hygro Thermometer Psychrometer

Measurements

• Relative Humidity (%RH)
• Air Temperature
• Dew Point
• Wet Bulb Temperature
• External Temperature

Temperature Inputs

Dual Type K Thermocouple

Data Storage

99 Records

Data Interface

RS-232 (Optional Cable)

Power Supply

4 × AAA Batteries

Included Accessories

• Two Type K Bead Wire Temperature Probes
• 4 AAA Batteries

✅ Applications

• HVAC Inspection
• Industrial Maintenance
• Environmental Monitoring
• Laboratories
• Clean Rooms
• Warehouses
• Pharmaceutical Facilities
• Food Processing Plants
• Building Inspection
• Quality Control

✅ Benefits

Accurate Environmental Monitoring

Measures multiple environmental parameters with high precision.

Multi-Function Display

Displays humidity, temperature, dew point, wet bulb, and probe readings simultaneously.

Data Logging Capability

Stores up to 99 readings for documentation and analysis.

Professional Temperature Measurement

Dual Type K inputs allow monitoring of multiple temperature points.

Portable & Convenient

Compact handheld design suitable for field inspections and industrial applications.

✅ Common Uses

• HVAC Diagnostics
• Climate Monitoring
• Building Inspections
• Industrial Quality Control
• Laboratory Testing
• Environmental Surveys
• Equipment Maintenance
• Facility Management

Explore our complete range of Environmental Measuring Instruments, Gas Detectors, Thermal Cameras, Sound Level Meters, Air Quality Monitors, Safety Equipment, Industrial Instruments, and Workplace Safety Solutions for professional inspection and monitoring.

✅ FAQ Section

❓ What does the EXTECH RH350 measure?

It measures relative humidity, air temperature, dew point, wet bulb temperature, and external temperatures using Type K probes.

❓ How many temperature probes can be connected?

The RH350 supports dual Type K external temperature probe inputs.

❓ Can the device store measurements?

Yes, it stores up to 99 measurement records.

❓ Is data transfer supported?

Yes, the device includes an RS-232 interface for transferring data to a PC using an optional cable.

❓ Where is the RH350 commonly used?

It is widely used in HVAC, laboratories, industrial facilities, environmental monitoring, pharmaceutical plants, and quality control applications.