Easidew Online User’s Manual
Michell Instruments 7
INSTALLATION
2.4 Monitor
The controls and indicators associated with the Easidew Online are located on the front
panel of the monitor.
Connections to the Easidew dew-point transmitter, the RS232 communications port and
the external power supply are all made to the rear panel of the monitor.
Figure 8
shows the layout of these controls and Tables 1 and 2 describe their respective
operational functions.
Dew-point temperature units are displayed by one of the two LED’s located to the left
of the display. On delivery, °Cdp is set-up as standard. If required, the units can be
changed to °F. The method of confi guring the unit for °F is described in Section 3.4.
Optionally, the instrument can be set-up to read dew point in parts per million (ppm
V
),
range 0 to 3000 ppm
V
. This option requires the transmitter to be set-up for ppm
V
either
at the time of ordering or subsequently via Michell application software. NOTE: No
specifi c ppm
V
LED indicator is provided on the monitor; ppm
V
is selected if
neither the °Cdp nor the °Fdp temperature indicators are illuminated.
Two temperature alarm indications are provided by two LEDs located on the right hand
side of the display. These are marked
AL1 (low) and AL2 (high). Access to the alarm
relay contacts is provided on the rear panel. The connection for these alarm relay
contacts is shown in Section 2.13.
NOTE: Every display is factory fi tted with 2 alarm relays as standard.
2.5 Monitor Panel Layout
Easidew Online Hygrometer
6
Figure 8
Monitor Panel Layout
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