Hach Sigma 950 Manual Básico Del Usuario página 15

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Connect an ultrasonic bare-lead sensor cable to a junction box
When an ultrasonic bare-lead sensor cable is used, connect the sensor cable to the remote
ultrasonic sensor option (junction box). Refer to
Figure 5 Remote ultrasonic sensor option
1 Enclosure 13.97 x 22.86 x
4.0 cm (5.5 x 9.0 x 4.0 in.)
2 Sensor cable (SE 818) to
instrument
Connect to a bubbler area/velocity sensor (optional)
Connect the bubbler area/velocity sensor cable to the Velocity port and the bubbler line port. A small
diameter tube in the sensor cable supplies air from the instrument to the sensor in the flow stream.
To connect a bare-lead sensor cable to the instrument:
1. At the instrument end of the conduit, connect the sensor cable to the instrument with a junction
box. Refer to
Figure 4
2. Connect the bubbler line tube to the brass tube fitting in the junction box.
3. Connect another section of tube from the brass tube fitting to the top tube fitting on the air dryer
canister that is connected to the Intake port of the instrument.
4. Connect the Velocity port pins to the junction box terminals. Refer to the wiring information on the
junction box.
Optional device wiring
Connect a rain gauge, pH probe and/or ORP probe to the applicable connector ports on the
instrument if applicable.
Connect a rain gauge (optional)
Connect an external rain gauge with a tipping bucket to the Rain Gauge port. The rain gauge
supplies a dry contact closure to the instrument. Refer to
3 Connect to Ultrasonic port on
instrument
4 Customer-supplied conduit
on page 14.
Figure
5.
5 Ultrasonic transducer
6 Sensor cable
Table 9
for wiring information.
English 15

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