The Data Acquisition Unit (DAU 2100) is used together with an associated Radar Tank Gauge for local readout and for connection of temperature sensors.
A Multiple Spot Thermometer (MST) with up to 14 temperature elements can be connected to the DAU.
The DAU can be equipped with a Readout Display showing level, temperature and other measured values. With the DAU placed at the foot of the tank, these values can be viewed at the tank without having to climb to the tank top.
If required, the DAU can also be placed at the tank top.
The DAU is powered from, and communicates through the Radar Tank Gauge to which it is connected. It is intrinsically safe using zener barriers on the Transmitter Interface Card (TIC) in the Radar Tank Gauge.
The weatherproof box houses a printed circuit board with a cable terminal for connection of the temperature sensors, as well as the power and communication cable. Cable glands are located at the bottom of the box.
Technical Data
Ambient operating temperature:
-40 to +70 °C (-40 to +158 °F).
Number of sensor elements:
Max. 14 per DAU.
Temperature ranges:
Range 1, -50 to +125 °C (-58 to +257 °F).
Range 2, -50 to +300 °C (-58 to +572 °F).
Range 3, -200 to +150 °C (-330 to +302 °F). Note! Temperature range for PTB approval is -20 to +90 °C
(-4 to +194 °F).
Temperature resolution:
0.1 °C (0.18 °F).
Accuracy (excl. sensor):
± 0.2 °C (± 0.36 °F) for -20 to 100 °C (-4 to 212 °F).
± 0.5 °C (± 0.9 °F) for other ranges.
Sensor elements:
Pt 100 single or multispot.
Display (optional):
LCD with 6 digits.
Available data on display:
Level, ullage, spot temperature, average temperature, level rate and signal strength.
Ingress protection:
IP 66 & 67.
Explosion protection:
II 1 G EEx ia IIB T4 (ATEX) and Class 1, Div I, Groups C and D (UL913 USA).
Power supply:
Intrinsically safe supply from Radar Tank Gauge.
Field bus:
Intrinsically safe local line from Radar Tank Gauge.