Thiết bị hiệu chuẩn độ ẩm Thunder Scientific Model 4500
Model 4500
Automated Low Humidity Generator
- Traceable to SI 3
- 0.1 °C Frost Point Uncertainty 1
- Two-Pressure Two-Temperature Principle
- ControLog® Automation Software
- Computerized Internal Transducer Calibration
- Automatically Applies Enhancement Factors
- Computes System Uncertainties in Real Time
The Model 4500 automated low humidity generating system is based on the fundamental, NIST proven, “two temperature” and “two pressure” principles. This system is capable of continuously supplying extremely accurate humidity values for instrument calibration and evaluation. When used within the specified frost/dew point range of –95 °C to 10 °C, this system will automatically generate multipoint profiles as well as manually entered setpoints for days or even weeks.
Virtually all functions of the 4500 humidity generator are controlled automatically. All desired humidities, temperatures, test pressures, and time intervals may be programmed. Visual indications of system status are displayed in real time on the computer monitor.
Simply apply power to the system, and the computer will load the controller with power-up and generation routines. A menu of options will appear, manual or automated control is selected, humidity and temperature setpoints are entered, or a profile is selected and generation begins. Humidity and temperature setpoints and profiles are limited only by the physical response time and range of the 4500 humidity generator.
Automated features of the 4500 allow the generator to perform humidity and temperature profiles completely unattended, while continuously recording and printing system data. This frees the operating technician from the task of system monitoring and adjustment. Upon completion of a profile, the system will adjust to a pre-selected humidity value and await a new instrument load or shutdown.