EdgeTech 650
Precision Transmitter Control Unit

• Highest precision ±1%RH
• Housing with LED display
• 4&2 wire technology, 4 to 20 mA for signal and power
• Variable cable lengths up to 10m
• Variable scaling of outputs signals possible
• Rapid measurement with accurate temperature probes. The measuring instrument extrapolates the final value.
• Highest precision due to system calibration (measuring instrument and probe) Calibration data is saved in the probe.
• Calculates the physical humidity parameters:
  - Relative humidity (%RH)
  - Dew point, pressure dew point (tp, tdp)
  - Absolute humidity (g/m3)
  - Humidity levels (g/kg pressure-compensated)
• Guaranteed long-term stability < 1% over 2 years

Highly accurate and reliable measurement and control of humidity and temperature is required for many industrial processes. The integrated microprocessor accepts the linearization and compensation for humidity over the whole range from -40 to 180°C. This guarantees highest accuracy of up to ±1%RH. In addition to relative humidity and temperature, dew point can also be calculated. Up to32 transducers can be analyzed on a PC. The optional LED display is easy to read.

The Model 650 incorporates a ±1% maintenance free humidity probe ideal for checking humidity measurements for validation of critical environments. It's rugged, com-pact and protected by a waterproof plastic housing. The humidity measuring range is 0-100%RH. The accuracy of this probe has been tested and proven time and again in worldwide laboratory tests. The probe is equipped with a patented %RH sensor.

The precision temperature/humidity measuring instrument includes the basic parameters: temperature, dew point and% RH.