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Figure 4. Sensor disconnect
OPTIONS
Sensor Disconnect
The sensor cable can be disconnected from the flowmeter
with the sensor disconnect option. To disconnect the
sensor, pull the latch release (Figure 4) toward the sensor
cable.
To connect the cable, align the latch alignment marks and
push the connector together.
Comment:
If you change sensors, check the zero (Page 9).
Power-In-Signal-Out Connector
Except for being smaller in size, the power-in-signal-out
connector (Figure 4) operates the same as the sensor
disconnect. The connection to the output signal is made on
a terminal strip that is attached to the AC power adapter.
The signal can be output to external recording devices.
Output impedance = 1.1 Ký
Output signal is 0.1 V = 1 ft/sec or 0.1 V = 1 m/sec.
Maximum scale is 2 volts.
[CAUTION]
Only use the NiCad batteries that are supplied with the AC power
option. If batteries other than 4.4 Ah nicads are used, they may rupture
and damage the unit or present a hazard to the operator.
The flowmeter is shipped with 2 D-Size Sanyo KR4000-D
NiCad batteries installed that should be left in the unit when
external power is being used. They serve as a filter and provide
backup power if the main power fails. A well isolated AC
power adapter (Figure 5) serves as a battery charger and
external power source. The NiCads take about 14 hours to
charge. Power requirements are 300 mA, 3 V for wet sensor;
100 mA, 3 V for dry sensor.
Figure 5. AC Power Adapter
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