NOTE
: Proper earth grounding of the Skymetry
WTU-14 is required for warranty coverage.
Ground rods can typically be found at local electrical supply houses
and/or hardware stores. You MUST contact your state “Call before
you dig” hotline at least
two
days before you install your ground
rod, to insure that it is safe to install the ground rod in a chosen
area.
Figure 6: Grounding the Skymetry
Wiring Sensors to Dry Contact Inputs
The WTU-14 has 8 Dry Contact inputs that can be used to moni-
tor Normally Open (N.O.) or Normally Closed (N.C.) sensors. In
addition, they can also be used for pulse counting and equipment
run-time accumulation. When used for pulse count or run time
functions, the unit will count the pulse (or accumulate time) when
the input changes to the opposite of its normal state.
Dry contact sensors are wired to the terminals labeled D1 through
D8. The corresponding Ground terminals are located on the lower
level terminal strip. The input type is programmed within the
Skymetry Software.
WARNING
: Do not use sensors, switches, or relays
that supply any voltage or current to the Skymetry
WTU-14.
Skymetry WTU-14
Manual
28
Summary of Contents for Skymetry WTU-14
Page 1: ...WTU 14 User s Manual version 1 11 Phonetics Inc LIT 0085...
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Page 32: ...Figure 11 A thermistor and a 4 20mA transducer connected to the unit Skymetry WTU 14 Manual 32...
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Page 109: ...Test Log...
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