The GEO Calibration 4000 EXP humidity generator and calibrator is a vertical temperature and humidity generator designed to support large calibration equipment. Featuring a temperature-controlled door that maintains internal temperature stability regardless of ambient fluctuations, this unit delivers reliable performance in diverse laboratory environments. The 30-liter square chamber accommodates data loggers, chart recorders, probes, and is engineered to support legacy hair hygrometers.

Performance Specifications

The 4000 EXP achieves a humidity range of 10 to 90% RH at 23°C with ±3.0% accuracy. Temperature accuracy is ±0.3°C with uniformity of 0.3°C at 23°C. Temperature stability is ±0.2°C, while humidity stability is ±1% RH at 23°C. Ramp and soak rates include temperature high to low at 0.50°C per minute, temperature low to high at 1.00°C per minute, and humidity transitions at 1.00% RH per minute in both directions. Response times of 3 to 5 minutes enable efficient calibration workflows.

Advanced Control

PID controller provides precise regulation of temperature and humidity conditions. Automatic ramp/soak programming simplifies complex calibration sequences. The vertical orientation is particularly suitable for calibrating larger instruments and systems where horizontal chamber access may be limited.

Applications

This generator is ideal for calibrating vertical systems and performs reliably in harsh environments where temperature stability and consistent humidity control are critical. The combination of spacious chamber capacity and rapid response makes it well-suited for high-throughput calibration laboratories.