Extech RH520B Humidity and Temperature Chart Recorder with Probe and NIST Calibration

The Extech RH520B-NIST Humidity and Temperature Paperless Chart Recorder delivers real-time digital and graphical monitoring of relative humidity, temperature, or dew point, with added functionality for MIN/MAX tracking and time-stamping. With its detachable probe and PC software, users can export and visualize advanced data trends, including Wet Bulb and GPP (grains per pound), ensuring precise environmental control across a variety of applications.

This model features an internal memory that logs up to 49,000 data points and a large, adjustable dual LCD for comprehensive on-device data review. The detachable probe extends up to 1 meter, ideal for closed environments. Designed for flexibility, it can sit on a desktop or be wall-mounted. An audible/visual alarm system with HIGH/LOW setpoints offers added security, and the included NIST Calibration Certificate guarantees measurement accuracy.

What's Included:

• 1 - Paperless Chart Recorder (RH520B)
• 1 - Universal AC Adapter with US/EU/UK/AUS International Plugs
• 1 - Built-in Stand
• 1 - Detachable Probe with 3 ft. Cable
• 1 - RS-232 Cable
• 1 - RS-232 to USB Adapter
• 3 - AA Batteries
• 1 - NIST Calibration Certificate

Features

Simultaneous Digital and Graphical Display
Monitors RH, temperature, or dew point while also displaying date/time and MIN/MAX values.

Advanced Environmental Data Calculation
Includes software for calculating Dew Point, Wet Bulb, and GPP, and transferring data to a PC for analysis.

Detachable, Extendable Probe
Probe extends up to 1 meter for use in confined or enclosed environments.

Replaceable Sensor
Sensor probe is field-replaceable and doesn’t require recalibration.

High/Low Alarm System
Integrated audible and visual alarms alert users when environmental thresholds are exceeded.

Memory and Data Scrolling
Stores up to 49,000 readings with on-device scrolling and cursor review of recorded values.

Memory Status Indicator
LCD screen shows remaining memory percentage to prevent data loss.

Large Adjustable LCD Display
Dual graphical LCD offers adjustable vertical and horizontal resolution for clarity.

Flexible Mounting Options
Designed for desktop placement or wall mounting for versatile installation.

NIST Certified
Includes a certificate of calibration for verified measurement accuracy.

What's Included

Included with Your Purchase:

• 1 - Paperless Chart Recorder (RH520B)
• 1 - Universal AC Adapter with US/EU/UK/AUS International Plugs
• 1 - Built-in Stand
• 1 - Detachable Probe with 3 ft. Cable
• 1 - RS-232 Cable
• 1 - RS-232 to USB Adapter
• 3 - AA Batteries
• 1 - NIST Calibration Certificate

Specifications

• Relative Humidity Range: 1 to 99% RH
• Temperature Range: -22°F to 140°F (-30°C to 60°C)
• Dimensions: 5 x 7.7 x 0.9 in.
• Weight: 12.6 oz.

FAQ

Q: What kind of data can this device log?
A: It records relative humidity, temperature, and dew point data and calculates Wet Bulb and GPP values with software.

Q: Can the sensor be replaced?
A: Yes, the detachable probe is replaceable and does not need recalibration.

Q: How is data transferred to a PC?
A: The unit includes RS-232 and USB adapters for seamless data export and software analysis.

Q: Is this recorder NIST certified?
A: Yes, it comes with a NIST Calibration Certificate to ensure measurement accuracy.

Q: Where can the device be used?
A: It is ideal for labs, cleanrooms, hospitals, conference rooms, food storage, and greenhouse environments.

Resources

Documents:

• Extech RH520B Datasheet
• Extech RH520B Manual