HygroCal100 User’s Manual
Michell Instruments
9
INSTALLATION
2.4.4 Power Adaptor Input
The DC power connector is a push fi t into the power input socket, as shown in
Figure 7
.
The method of connection is as follows:
1. Ensure that both ends of the power cable are potential free, i.e. not
connected to an AC power supply.
2. Check that the ON/OFF switch is switched to OFF.
3. Push the connector into the power input socket.
4. Connect the mains plug of the power adaptor to a suitable AC power
source (voltage range 100 to 240 V AC, 50/60 Hz) and switch on the AC
supply.
5. Switch on the instrument, as required, using the power ON switch.
24V DC
Figure 7
Power Adaptor Input
2.5 Top Panel Layout
2.5.1 Probe Ports
Seven ports are provided for the installation of probes under test. Each port is fi tted
with an adaptor, which allows the probe to be sealed into the chamber by means of an
O-ring.
123
4 5 6 7 Reference
Figure 8
Probe Ports
Adaptors are available with a wide variety of port sizes, from 12 to 25mm.
To install a port adaptor, locate the port adaptor removal tool (A000265) in the pin holes
on each adaptor, and unscrew or tighten the adaptor into the port. Take care not to
crossthread the adaptors.
To install a probe, simply fi t the correct size of port adaptor, remove the blanking plug,
and push the probe straight through the center of the adaptor until the O-ring grips the
probe shaft at its widest point. Ensure that any ports not in use are blanked off with
the appropriate plug.
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