GMA 4100-DP Control Panel
Dew Point
Reading
of dew point values on a 3-digit display
- Menu display
- 3 variably adjustable alarm thresholds
- Peak value memory
- Adjustable relay functions: NC / NO contact, open-circuit / closed circuit
- Alarm hystereses prevents “flickering” of relays
- 4 - 20 mA analog output signal
The GMA 4100-DP continuously provides information on the measured dew point level, exceeded alarm thresholds and its operational status. As soon as the dew point exceeds one of the three pre-set levels, the GMA 4100-DP gives a warning by means of the LED display, the console mounted horn/strobe, and controls the relevant alarm relays. In addition to this, the GMA 4100-DP provides the measurement value as an analog output signal for further evaluation. The GMA 4100-DP is easy to operate and maintenance-free. The dew point sensor is self calibrating and lasts for years. Should unexpected failures or system faults occur, the comprehensive failure recognition allows a quick and specific service.
Alarm
points
Each alarm can be adjusted separately. Relay chatter is eliminated with
the adjustable alarm delay. The alarm point values can be freely adjusted
using the keypads on the controller.
Alarm
relays
The controller
provides four voltage-free relays for the three alarms and one fault warning.
The relays may be used to control additional alarm devices like lights
or horns.
Additional
features
The 4100 control panel stores peak values and offers an additional 4-20
mA output.
The operation and performance of Vaisala dew point transmitters is unique.
The lasting high performance is achieved using Vaisala DRYCAP® polymer
sensor technology, which incorporates innovations like the patented auto
calibration feature and sensor purge. These result in dew point measurement
with excellent long-term stability, i.e. very small drift. This in turn
means very low maintenance needs and costs, which is important in equipment
like small-sized air dryers.