• Other Fluke companies:
  • Fluke
  • Fluke Biomedical
  • Fluke Networks
  • Fluke Process Instruments
See more Fluke brands
Accelix Amprobe Beha-Amprobe Comark Emaint Landauer Pacific Laser Systems Pomona RaySafe Schad
Home
Precision, Performance, Confidence.
Fluke Calibration: Oceania
  • Register
  • Log in
  • Contact Us

AU - English [Change]

 

Get Quote

Humidity Calibration

The 5128A RHapid-Cal® Humidity Generator is a portable humidity generator for calibrating a large workload of probes in the laboratory or on-site in the field. It is used by corporate calibration/research labs and independent calibration labs where humidity measurement is critical to prevent spoilage of products in industries including pharmaceuticals, medical devices, semiconductors, chemicals, and food production.
Request a Quote
Keep me informed
Humidity Generators
Humidity Generators »
Humidity Data Loggers and Monitors
Humidity Data Loggers and Monitors »

What is Humidity Calibration?

Humidity affects many properties of air and the materials that are exposed to it. Monitoring and measuring humidity is important wherever there is a need to prevent condensation, corrosion, mold, warping or spoilage of products. For example, it’s important to measure humidity in industries that manufacture and distribute foods, pharmaceuticals, chemicals, fuels, wood, textiles, and paper. Museums, art galleries, data centers, hospitals, research laboratories, and semiconductor manufacturers are other types of organizations where measuring humidity is vital.

The sensors that measure humidity need to be calibrated regularly to ensure they continue to operate within their specifications. Humidity sensor calibration is typically done using an instrument called a humidity generator.

Most humidity generators are based on one of two designs. A mixed-flow generator controls humidity by using the split-stream method. In this method, dry gas is drawn into the generator and divided into two parts. One part is partially or completely saturated with water vapor; the other part is mixed in until the targeted humidity output is reached. The humidity depends on the wet air’s humidity and the mixing ratio. A high-volume fan in the test chamber keeps the temperature and humidity uniform.

A two-pressure generator has two chambers. The first, called the saturator, contains air saturated with water vapor at a high pressure. The air passes from the saturator to the second chamber, called the test chamber. The test chamber is at a lower pressure. As the air passing into the test chamber reduces in pressure, its relative humidity also drops.

A mixed-flow generator is faster than a typical two-pressure generator, and is also more portable, which makes this type of calibrator a good solution for work in the lab or on-site in the field. 


Selecting a Solution

For measuring humidity, you’ll want a dependable, accurate solution that’s convenient and easy to use. The ability to monitor temperature as well as humidity, or barometric pressure and humidity, allows some instruments to provide a single solution. Do you need to monitor humidity in multiple locations? If so, the ability to network the measurement instruments together and analyze data on a computer can be helpful.

Other nice-to-have features include the ability to view data in real time in both statistical and graphical views; a front panel that can be viewed from a distance; the ability to export data to a spreadsheet for analysis.

For calibrating humidity, look for a dependable solution that maintains stability and uniformity over time– two key specifications that impact the quality of a humidity probe calibration. Ask how fast a humidity calibrator stabilizes, because that affects how long you have to wait before beginning the calibration.

Performing a thorough calibration is important. You can perform a spot-check or one-point probe calibration in the field with a handheld humidity meter, but its value is limited. Calibration with a handheld meter needs to be carefully managed. Temperature differences between the probe and its environment, technician body heat, and even moisture from breath can all cause RH measurement errors. Furthermore, one-point tests can cause out-of-tolerance readings when ambient conditions change.

Consider your workload and where you will calibrate it. Will you work primarily in a controlled laboratory environment? On-site in a field environment? Or both? If your work takes you to a variety of environments, consider a solution that works in all of them to save equipment cost and, so your technicians don’t have to learn different instruments for each environment.

The amount of workload you calibrate is important too. Some units only calibrate one humidity sensor at a time, while others can calibrate multiple probes at once.

Any time you make a capital investment you need to consider post-sale service and support. It’s best to work with a company that stands behind its products, as well as one that you feel confident will remain in business for many years to come.


Request a Quote
Keep me informed
  • Home
  • Products
    • New Products
    • Electrical Calibration
      • Electrical Standards
      • Electrical Calibrators
      • Bench Multimeters
      • Electrical Calibration Software
    • RF Calibration
      • RF Reference Sources
      • RF Calibration Accessories
      • RF Calibration Software
    • Data Acquisition and Test Equipment
      • Bench Multimeters
      • Data Acquisition
      • Data Acquisition Software
    • Temperature Calibration
      • ITS-90 Temperature Standards
        • ITS-90 Fixed-point cells
        • Standard Platinum Resistance Thermometers
        • Maintenance Apparatus
        • Liquid Nitrogen Comparison Calibrator
        • Resistance Bridges
        • Standard Resistors
      • Calibration Baths
        • Compact Calibration Baths
        • Standard Calibration Baths
        • Special Application Baths
        • Bath Accessories
        • Bath Controllers
        • Bath Fluids
      • Industrial Calibrators
        • Field Metrology Wells
        • Metrology Wells
        • Handheld Calibrators
        • Field Dry-Block Calibrators
        • Micro Baths
        • Infrared Calibrators
        • Thermocouple Furnaces
        • Dual Block Dry-Well
        • Zero-point Dry-Well
      • Probes / Sensors
        • Platinum Resistance Thermometers (PRTs)
        • Thermistors
        • Thermocouples
      • Digital Thermometer Readouts
      • Multifunction Calibrators
      • Temperature Calibration Software
    • Humidity Calibration
      • Humidity Generators
      • Humidity Data Loggers and Monitors
    • Pressure Calibration
      • Piston Gauges
        • NMI Piston Gauges
        • Absolute Piston Gauges
        • High Pressure Pneumatic Piston Gauges
        • Hydraulic Piston Gauges
        • Piston Gauge Accessories
      • Automated Pressure Controller / Calibrators
        • Low Pressure Controllers / Calibrators
        • Pneumatic Pressure Controllers / Calibrators
        • High Pressure Pneumatic Controller / Calibrators
        • Hydraulic Controller / Calibrators
      • Pressure Monitors
        • Low Pressure Monitors
        • Digital Pressure Gauges
        • Reference Pressure Monitors
      • Deadweight Testers
        • Pneumatic Deadweight Testers
        • Oil Deadweight Testers
        • Water Deadweight Testers
        • High-Pressure Hydraulic Deadweight Testers
        • Deadweight Tester Accessories
      • Manual Pressure Calibration
        • Pressure Calibrators
        • Pneumatic Pressure Control
        • Hydraulic Pressure Comparators / Pumps
      • Handheld Pressure Calibrators
      • Air Data Calibration
      • Environmental Monitors
      • Pressure Calibration Accessories
      • Pressure Calibration Custom Systems
      • Pressure Calibration Software
    • Flow Calibration
      • Gas Flow Standards
      • Gas Flow Accessories
      • GFS Primary Gravimetric Flow Standard
      • Flow Calibration Software
    • Process Calibration Tools
      • Temperature Calibrators
        • Handheld Temperature Calibrators
        • Dry-Block Calibrators and Micro-Baths
        • Precision Digital Thermometers
        • Temperature Probes
        • Infrared Calibrators
        • Hygro Thermometer with Data Logging
      • Pressure Calibrators
        • Digital Pressure Calibrators
        • Handheld Pressure Calibrators
        • Deadweight Testers
        • Precision Digital Pressure Gauges
        • Calibration Hand Pumps
      • Multifunction Calibrators
      • mA Loop Calibrators
      • Process Calibration Software
    • Calibration Software
      • MET/CAL® Software
      • MET/CAL® Support
      • Asset Management Software
      • Temperature Calibration Software
      • Pressure Calibration Software
      • Flow Calibration Software
      • Mechanical / Dimensional Calibration Software
    • Service and Support
    • All Calibration Instruments
  • Purchase Info
    • Where to Buy
    • Request a Quote
    • Request a Demo
    • Request a Sales Consultation
    • Certified Pre-Owned Equipment
    • General Services Administration (GSA)
    • Financing Program
    • National Stock Numbers (NSNs)
    • Payment Options and Tax Info
  • News
    • Press Releases
    • Promotions
    • Industry Links
    • Metrology Salary Survey
  • Training and Events
    • Conferences and Exhibitions
    • Training Courses
    • User Group Meetings
    • Web Seminars
      • Live Seminars
      • On-Demand Seminars
  • Literature and Education
    • Education Hub
    • About Calibration
    • Articles and Education
    • Product Literature
    • Product Manuals (User Guides)
    • Videos and Virtual Demos
    • Blog
  • Service and Support
    • Service Request (RMA)
    • Service Plans
    • Technical Support
    • Knowledge Base
    • Accreditations
    • Authorized Service Centers
    • Calibration Certificates
    • Community Forum
    • My MET/SUPPORT
      • Activate
      • Procedures
      • Software
      • Technical Bulletins
      • Priority Support
      • Manuals
    • Product Manuals (User Guides)
    • Safety Data Sheets (SDS)
    • Safety, Service, and Product Notices
    • Software Downloads
    • Tools
      • PT100 Calculator
      • ITS-90 Reference Function Calculator
      • Thermocouple Table Voltage Calculator
      • Thermocouple Voltage to Temperature Calculator
  • About Us
    • Contact Us
    • Visit Us
    • Employment
    • Fluke Calibration
      • Hart Scientific Temperature Calibration
      • DH Instruments Pressure and Flow Calibration
      • Pressurements Pressure Calibration
      • Ruska Pressure Calibration
    • Fluke Companies
    • Integrity and Compliance
    • Frequently Asked Questions
Home|Products|Humidity Calibration

Sidebar Request a Quote

Request a quote

Your information is protected by our privacy policy.

©1995-2023 Fluke Corporation
             

Secondary menu

  • Disclaimer
  • Privacy Statement
  • Terms of Use
  • Terms of Sale