Overview

The Humor 20 is a highly precise and user-friendly humidity calibrator designed as an ideal reference standard for calibration laboratories and humidity sensor manufacturers. It operates as a primary standard based on a two-pressure humidity generation principle, ensuring exceptional accuracy, stability, and rapid stabilization times.

Key Features

• Primary Standard: Uses a two-pressure humidity generator where humidity reference depends solely on pressure, a fundamental physical quantity.
• Versatility: Independent of ambient temperature, suitable for mobile measurements, and can accommodate up to four humidity sensors or transmitters simultaneously.
• Ease of Use: Requires only distilled water, filtered oil-free compressed air at 10 bar, and 100-230 V AC power supply. It powers connected sensors and reads their voltage or current outputs.
• Automatic Calibration: Optional automation kit enables fully automated calibration cycles controlled via included PC software, which also generates calibration certificates.
• Traceability: Optional accredited calibration certificate available for use in accredited calibration laboratories.

Technical Specifications

Humidity

• Operating range: 10% to 95% relative humidity (rF)
• Accuracy: Specified with an uncertainty including factory calibration (k=2), valid for metal measurement chamber covers
• Stabilization time: Less than 3 minutes per measurement point

Temperature

• Measurement accuracy in the measurement chamber: ±0.3 °C (typical, with metal chamber covers)

Measurement Inputs

• Four switchable inputs supporting 4-20 mA, 0-20 mA, 0-1 V, 0-5 V, and 0-10 V signals
• Typical input accuracy: <5 mV for voltage, <30 µA for current

Measurement Chamber

• Cylindrical chamber diameter: 8 to 25.5 mm
• Compact size options: max. 100 x 85 x 40 mm or 95 x 95 x 40 mm

General

• Power supply: 100 - 230 V AC, 50/60 Hz, max. 20 W
• Sensor power output: 24 V DC, max. 200 mA
• Protection class: I; Protection rating: IP40
• Overvoltage category: II; Pollution degree: 2
• Display: Dot-matrix with backlight
• PC interface: RS232 (COM port)
• Software requirements: MS Windows 7 or newer
• Operating environment: 10-40 °C, 10-80% relative humidity, up to 2000 m altitude, indoor use
• Electromagnetic compatibility and safety standards: EN 61000-6-3, EN 61326-1, EN 61000-6-2, EN 61010-1, EN 60068-2-6, EN 60068-2-29
• Dimensions: 400 x 260 x 240 mm; Weight: 23 kg (device), 36.5 kg with transport case

Automation Kit (Optional)

• Enables fully automatic calibration cycles with configurable settings
• Power supply: 100 - 230 V AC, max. 15 W
• Compressed air requirements: Oil-free filtered air, 9.8 to 12 bar, max. particle size 5 µm
• Protection class and environmental conditions similar to main device
• Dimensions: 260 x 260 x 240 mm; Weight: 9 kg (kit), 23 kg with transport case

Accessories and Consumables

• Various measurement chamber covers available to fit different sensor sizes and types
• USB/RS232 converter, adjustable hex keys, filter sets with oil separators, O-rings, and holding brackets
• Calibration and measurement software included
• Calibration certificates available on request with customizable calibration points

Usage and Applications

The Humor 20 is suitable for on-site calibration of humidity sensors and transmitters, providing a stable and traceable humidity reference independent of ambient conditions. Its rapid stabilization and ability to calibrate multiple sensors simultaneously make it ideal for calibration laboratories and sensor manufacturers.

Manufacturer and Support

Produced by E+E Elektronik Ges.m.b.H., Austria, with subsidiaries worldwide providing sales and support. Contact details and further information are available on the company website.