Operation
Page 59
3.4.24.2
Analog Output Menu - Current
Main Menu
Communications Menu
Analog Output Menu
These items appear when
Output Mode
is set to
Current
.
Current Range
Enables the user to set desired current ranges. The user’s choices
are
0-20mA
,
2-20mA
or
4-20mA
.
4mA Calibration
Enables the user to calibrate the current output at a low point.
Increase/decrease the value until the connected equipment reads
4mA (refer to Section 4.4.1.2).
20mA Calibration
Enables the user to calibrate the current output at a full scale
point (20mA). Increase/decrease the value until the connected
equipment reads 20mA (refer to Section 4.4.1.2).
3.4.25
Digital Input Menu
Main Menu
Communications Menu
Digital Input Menu
This menu is used to remotely trigger zero and span calibrations. This is done by assigning the eight
digital inputs with one of the following commands.
DI N (Pin X)
Associates an action with a digital input. There are eight digital
inputs (the pin numbers are for the 25 pin connector). Each one
can have one of the following associated actions, triggered when
the corresponding digital input goes to the
Active
state:
Disabled
: No action (this digital input does nothing).
Do Span
: Used to perform a span precision check. When
activated the instrument sets the
Cal. Mode
to
Span
(refer to
Section 3.4.10.1).
Do Zero
: Used to perform a zero precision check. When
activated the instrument sets the
Cal. Mode
to
Zero
(refer to
Section 3.4.10.1).
Active
Each pin can be set to be active
High
or
Low
. Active High means
that the event will be triggered when the line is pulled to 5V.
Active Low means that the event will be triggered when the line is
pulled to 0V.
Example
Here is a typical configuration between an instrument and either a data logger or calibrator (master
device):
1.
Set the jumper JP1 to 5V position (refer to Section 4.4.3).
2.
Connect one of the master devices digital output signals to pin 18 and the ground signal to pin 5
of the instrument’s analog/digital 25 pin female connector (refer to Figure 20).
3.
Program master device to output 0 volts to pin 18 when a span is desired.
4.
In the instrument’s
Digital Input Menu
assign
DI 0
Do Span
.
Summary of Contents for Serinus 44
Page 1: ...Serinus 44 Ammonia Oxides of Nitrogen Analyser User Manual Version 3 0 www ecotech com...
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Page 137: ...Troubleshooting Page 137 7 6 USB Memory Stick Failure Figure 71 USB Memory Stick Failure...
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Page 150: ...Serinus 44 User Manual 3 0 Page 150 9 5 Plumbing Schematic D020018...
Page 151: ...Parts List and Schematics Page 151 9 6 Block Wiring Schematic D020104...
Page 152: ...Serinus 44 User Manual 3 0 Page 152 9 7 Ozone Generator Assembly H011107...
Page 153: ...Parts List and Schematics Page 153 9 8 Optical Bench Assembly H011200...
Page 154: ...Serinus 44 User Manual 3 0 Page 154 9 9 Manifold Block Assembly H011302...
Page 155: ...Parts List and Schematics Page 155 9 10 Calibration Manifold Assembly H010013 01...
Page 156: ...Serinus 44 User Manual 3 0 Page 156 9 11 Valve Assembly H010042...
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