Envco – Environmental Equipment

Vaisala DRYCAP® performance
The DMT242 incorporates the Vaisala DRYCAP® thin film polymer sensor and auto-calibration software, a combination that makes it ideal for use in dry conditions. The sensor is immune to particulate contamination, water condensation, oil vapor, and most chemicals. As the sensor withstands condensation, its performance is unmatched for low dewpoint applications that experience process water spikes, such as pipeline condensation during a system failure or start-up.

The auto-calibration software works on-line while the process is running. If the measurement accuracy is not confirmed, the software makes the corrections to the calibration curve. Corrections may be due to contamination or aging of the sensor. In either case the transmitter adjusts the measurement, corrects dry-end drifts and continues to function. Calibration occurs quickly with corrections so minor that the user will not realize it has taken place.

The user can perform field-check by using Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70. The transmitter can be sent to Vaisala Service for NIST traceable calibration. Calibration intervals depend on the application; the recommended calibration interval is every two years.

Compact, rugged and intelligent
The DMT242 is designed for extreme conditions that require protection against dust, dirt and splashed water. The housing offers IP65- protection and the transmitter can be installed directly into systems at 20 bar maximum pressure.

Due to its compact size, DMT242 is quickly and easily installed in tight spaces. Units are delivered installationready. If necessary, re-scaling the output can be done via the serial interface. The supply voltage and output signal connect easily to the IP65 (NEMA 4) protected screw terminals. A separate serial output is available for service use.

Please read specification sheet and order guide prior to placing an order. Vaisala products are professional grade instruments and have options specific to your application. This information needs to be detailed.