Kahn Optisure Remote, User Manual

Page: 14 / 54

Optisure Remote User’s Manual
Kahn Instruments 7
INSTALLATION
2.5.2 Analog Output Connections
The three analog outputs can be configured to represent any of the directly measured
or calculated output parameters. They are provided as 2-wire signals from a 6-way
connector located on the rear panel of the instrument.
Each of these outputs can be set-up as either a current loop signal (4-20 mA or 0-20
mA) or alternatively, as a 0 to 1 V voltage signal. The configuration of these outputs,
i.e. parameter represented, output type (current loop or voltage) and upper/lower span
levels are set up via the
SETUP Menu (refer to Section 3.5.4).
These signals may be used to control external systems. During a DCC cycle, and for
the hold period following a
DCC
cycle, they are held at the level that they were at
immediately prior to the start of DCC . When the dew-point measurement is stable, or
if the maximum hold period has expired, they are released and will track the selected
parameter throughout the measurement cycle.
By default the analog outputs are setup as 4-20 mA current loop, with the following
ranges:
Dew point -40 to +176°F (-40 to +80°C)
Temperature -58 to +122°F (-50 to +50°C)
% Relative Humidity 0 to 100%
NOTE: The analog outputs are only active during the MEASURE phase. During
DCC cycles they will be held at the last measured value.
The three analog output ports connections are made via a single 6-way, push fit connector
block as shown in Figure 4. All outputs are 2-wire, positive-going signals referenced to
a common 0 V line. To differentiate between the outputs it is recommended that a black
lead be used for each of the COM (common) lines and a separate color for each of the
positive lines.
Figure 4
Analog Output Connectors