Panel mounting 6" LCD Colour Chart Recorder.
The VR18 is a panel mounted 6" LCD colour
chart recorder with alarms, maths functions
and MODBUS based serial communications.
Up to 6 I/O cards can be fitted in the rear of the unit consisting of
isolated analogue input, digital input and relay output. Virtually any
sensor can be connected to the analogue inputs including thermocouples,
PRT, mV, V, 4-20mA etc.
The VR18 stores data to a 16M Compact Flash memory card (supplied
with the VR18) at pre-set rates - 1, 2, 5, 10, 30, 60 or 120 seconds.
Other sizes of CF memory card can be fitted up to 128M. The VR18
can also display channel data in real time in various formats on up to
6 different pages. This can be scrolling charts, bar charts, numeric
display, or a combination of all in "Mixed mode". Recorded data can
also be recalled and displayed in "History" mode.
Each analogue input can be programmed with 2 sets of high/low/deviation
alarms, and 2 separate events can be instigated on alarm. This could
be setting a relay output or generating a report. The VR18 also supports
virtual channels, whereby a channel can be derived from several others
using a maths function. The digital inputs can also generate alarms or
events. Alarms can be display and acknowledged on the alarm List page.
The VR18 also has up to 6 counter/timer/totalise functions. Timer/counter
functions can be used to generate reports at specific times on a daily,
weekly or monthly basis. The totaliser is useful for compiling data for
inclusion into reports.
The VR18 comes with an Ethernet port as standard and can be fitted
with an RS232/485 port as an optional extra. The VR18 supports
MODBUS RTU, and can easily integrate with any existing SCADA
package. The VR18 also comes with the Observer software package
which allows configuration, monitoring and data downloading.
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November 2003
