Servomex AquaXact 1688, Руководство оператора

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© Servomex Group Limited 2017 AquaXact Issue 1.0
Figure 4-3: Mechanical installation – remove sensor tip
Electrical installation 4.3
The AquaXact 1688 will operate properly with 13 Vdc minimum to 33 Vdc maximum at its
input, if this voltage is exceeded the internal fuse may open, this fuse will self-reset after a
cool down time. When selecting the power supply voltage do not neglect the voltage drop
across any current measurement resistor and wiring in the loop. The keyed connector is
an industrial standard 9.4 mm, 7-pin connector, IP65 NEMA 4X (Figure 4-4). Do not force
the connector. When the connector engages, secure it with the retention screw.
The AquaXact 1688 will draw 4 mA to 20 mA from the power supply depending on the dew
point being measured. The dew points corresponding to 4 mA and 20 mA are the
full -100 °C to 20 °C range. The range is user selectable via the Servomex digital
controller. In between 4 mA and 20 mA, the current varies linearly with dew point. There
are two custom ppm ranges that can be ordered namely 0-100 ppm and 0-1,000 ppm.
Please observe good electrical safety and grounding practices when connecting any
electrical equipment; connecting one end (e.g. negative) of the power supply to earth
ground is advisable.