User Controls; Figure 2 User Controls - Kahn Easidew Plus User Manual

OPERATION
3.4

User Controls

1 Digital Display
2 Power Switch
3 Fuse
NiMH Battery
4
Pack
Analog Output
6
Socket
7 Gas Fittings
6
Easidew Plus Portable Hygrometer User's Manual
2
1
Power
°Cdp
o
-
4-20
mA
O/P
BATTERY
Battery
Level
Gas In
Gas Out
To measure
 
at
line
2 1
pressure
atmospheric
1 2
pressure

Gas Out
Figure 2
Indicates the measured dew point in °F or °C from -58 to +68°F
(-50 to +20°C).
Under certain conditions the following error messages may be
displayed:
ErrL = Sensor under range
ErrH
= Sensor over range
Err I = Sensor fault or sensor disconnected
Switches the Easidew Plus Portable Hygrometer ON or OFF.
This 1A quick blow fuse provides protection for the display
electronics in the event of a fault with the charger or battery
pack. Another protection fuse is located on the display PCB.
Located in the top right hand corner of the instrument, it can be
accessed by removing two screws (5). The battery pack can be
recharged using the supplied charger, via the battery-charging
socket and should be recharged whenever the battery level
meter is in the red region. See Section 5.6 for troubleshooting
information.
The battery pack will charge if the instrument is switched ON or
OFF. However, the battery level meter will only indicate when
the instrument is switched on.
The Easidew Plus Portable Hygrometer features an analog
output socket that provides a linear 4-20 mA current loop,
scaled to -76 to +140°F (-60 to +60°C) dew point. This allowed
the instrument to be connected to a chart recorder, data logger
or PC to enable dew-point trends to be analyzed over time.
The Easidew Plus Portable Hygrometer can be used for
measurements at line pressure (up to 4350 psig (300 barg))
or atmospheric pressure. Swagelok
for use with 1/4" OD stainless steel tube. There is a 32mm
particulate filter (99.5% removal of 0.1 micron particles)
installed as standard under the
3 4
Fuse
Battery
Charger

Gas In
Filter Fitted
User Controls
tube fittings are supplied
®
Gas In
port position.
97478 Issue 1, October 2014
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