K-Patents PR-23 - 3 Indicating Transmitter DTR; 3.1 DTR Description and Mounting

3 Indicang transmier DTR
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3 Indicang transmier DTR
3.1 Indicang transmier descripon
The Indicating transmitter DTR is a specialized computer designed to process data
received from one or two sensors. The Indicating transmitter enclosure (Figure 3.1)
contains a front panel with a backlit Liquid Crystal Display (LCD) and a keyboard. The
front panel swings open to give access for connections and service. Knockout pad-
lock provisions are included in the enclosure’s both cover latches for locks to prevent
unauthorized access.
PROCESS INSTRUMENTSPROCESS INSTRUMENTS
POWER
Figure 3.1 The Indicang transmier enclosure
The sensors send the values of the refractive index n
D
and the process temperature
T to the DTR. The microprocessor system then linearizes the concentration reading
(example in Figure 3.2), and performs an automatic temperature compensation.
10
20
30
40
50
60
70
1.35 1.40 1.45
n
D
BRIX
Figure 3.2 A linearized curve