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Chapter 2 Installation
Power Supply Requirements
FlowCERT LITE can operate from AC supply or from a DC battery and is
designed for use in temperatures between -4
o
F to +140
o
F (-20
o
C to +50
o
C).
The AC is 115V+5%/-10% 50/60Hz. The DC is 22-28V. In all cases the
FlowCERT LITE will typically consume 6W of power, with a maximum of
10W. If FlowCERT LITE has both an AC and DC supply available then the
AC supply source will be automatically sensed and used, should the AC
supply be removed for any reason then the DC supply will take over.
The AC and DC wiring should be completed using either 16 – 14 AWG
(1.5–2.5mm
2
) stranded or 16 – 14 AWG (1.5–4mm
2
) solid wire, with all
terminals being tightened to 4.5in lbs (0.5Nm).
An external supply isolator/circuit breaker (AC or DC) must be fitted near to
the unit and labelled to identify the instrument to which it refers.
Safety Symbols
Detailed below are descriptions and meanings of safety/warning symbols
that are used on the FlowCERT LITE and in this manual.
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