- Support for Soil Moisture Tension
"Available Water %" for five soil types on GP-HR
- PT1000 on GP-HR formula changed so that Omnilog does not crash when no probe is connected.
- Three PT1000 probe Factory Default for GP-HR added.
Version 1.27 (April 2001)
- New Switch report added
- Fix "Stop on Time" anomaly for Loggers before
Firmware Ver 1.9
- Fix Printed Graph Time Axis inaccuracies
- Change Status screen so that Stop time only shows if logger
has been started in "Stop on Time" mode.
Version 1.26 (March 2001)
- Support for PT1000 on GP-HR.
- Support for new Switch probe type on GP-HR
- Bug Fix for 2 pin mA-HR32000 and mV-HR32000
when calibrating with a small negative offset.
- More Factory Defaults added for the GP-HR.
- Probes automatically select their default
calibration offset and gain when selected in >>>Logger Control - Channel and Probe Setup.
- Progress message during logger start added.
Warning message if user attempts to starts logger while it is still running.
Version 1.25 (Feb 2001)
- Bug fix in original pH Calibration.
- Fix "Missing File" error when printing graphs from
Ver 1.24.
- Fix "Start on Time" anomaly for Loggers before
Firmware Ver 1.9
Version 1.24 (Feb 2001)
- Support for pH-HR and Multi Factory Default Resets
Version 1.23 (January 2001)
- Logger communications method changed for compatibility with
Japanese Windows
Version 1.22 (January 2001)
Version 1.21 (December 2000)
- Support for Type J,N,T and R Thermocouples on Tc-HR
Version 1.20 (December 2000)
- Graph Printing Method changed
- Bug fix in Thermocouple calibration
- Help file calibration procedures updated for
Thermocouple,Voltage and Current.
Version 1.19 (October 2000)
- Omnilog Assistant and Automatic Logger Control on connection
Version 1.18
- Support for GP-HR (October 2000)
Version 1.17 (September 2000)
- Added Grow Degree Day Report
Version 1.16 (August 2000)
Version 1.15 (August 2000)
- First Public Release (August 2000)
Version 1.14 (not for user distribution)
- Beta test version (not for user distribution)
Version 1.0 to 1.13
- Development Versions not released
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Can I get a version of the OmniLog Software for Windows 3.1
The Omnilog Data Management Program will not run on Windows
3.11 or earlier. There is no plan, at present, to produce a Windows 3.11 version of this
application.
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What
is a Derived Channel
A Derived Channel is a channel derived from the data of
existing channels and added to a dataset.
Examples of derived channels include:
Absolute Humidity from Temperature and Relative Humidity
Dew Point from Temperature and Relative Humidity
Wind Chill Factor from Temperature and Windspeed
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I want to log a switch input on a GP-HR. How do I do it ?
This depends on the information you require
from the switch. If you want to count the number of switch closures in each logging
period, connect the switch to the logger Digital Pulse input (Channel 4, Pin 5 on the
GP-HR) and set this channel up as a counter. If you need to know the state of the switch
at each logging interval, connect the switch to any one of the three analog inputs
(Channel 1 to 3 Pins 2 to 4 on the GP-HR) and set the channel to Switch.
Information on connecting a switch to the digital pulse
input
Information on connecting a switch to an analog input
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top of FAQ

What
are plug-in reports
A number of reports come as a standard part
of the Omnilog program. These include:
Logger Status Report |
Report on the Logger and Channel setup |
Periodic Report |
For dividing logged data up into Hour,
Day, Week and Month periods including Totals ,Averages, Maximums and Minimums for each
period. |
Grow Degree Days Report |
Accumulative Grow Degree Day calculations for a wide variety of
crops |
Switch Report |
Report showing the state of a switch on an analog channel including
On and Off times and durations |
These reports are included because they
will be used by a large number of Omnilog users.
Other reports are available but are
distributed separately to avoid make the Omnilog installation file too large. These
reports will only be used by a small group of Omnilog users.
These Plug-in reports are small exe files
that you put into the same folder as your Omnilog system. The Flow Totals Report is a good example of OmniLog
Plug-in Reports.
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Is there some detailed instructions about setting the gain etc in
the units and scaling and calibration sections of the channel set up screen.
They both appear to have the same affect. However sometimes if for instance
in Rain fall if the gain is set to 0.5 on one of them the pulses increment
by 0.5mm but the data is only recorded to the nearest 1mm and at other times
the recorded data is to the nearest 0.5mm.
Calibration Gain and Offset
These are used to convert the A2D converter and counter readings to SI Units
As much as possible we try to convert everything to SI units then Scale the readings to
whatever the user requires.
There are five exceptions we have made because the SI units are of inconvenient scale
These are:
1... Temperature we use degC not degK
2... Distance we use millimeters not metres
3... Pressure we use hectaPascals not Pascals
4... For a milliVolt logger we use milliVolts not Volts
5... For a 20mA channel we use milliAmps not amps
Scale Gain and offset
These are used to convert the SI units (or our preferred units as listed above) to the
users required units.
So for example:
A 4-20mA channel will be calibrated so that the Calibration Gain and Offset will give the
correct result in mA
The Scale Gain and offset can be used to convert the mA's to any other units the user may
want.
Another example:
Temperature Logger - the Calibration Gain and offset will give a reading in degC - the
Scale Offset and Gain can be used to scale this to degF or degK.
This scaling can be done automatically by clicking the Select button in the Scale box and
selecting the required units.
In the case of the rain gauge the Calibration offset and gain are used to get the logger
reading in mm. .5mm per tip therefore 2 tips per mm therefore gain of .5
The scale offset and gain could be used to read in metres or feet or yards of kilometers
or miles or even fathoms if the user requires. The Select button will only give the common
conversions and as feet and metres of rain are uncommon the only options available are
inches and tips.
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Your web site says that the GP-HR logger has 64k of memory in 8 bit mode
and 32k of memory in high resolution (12 bit mode), The data sheet I rececived from the
agent said it had 32k in 8 bit and 16k in 12 bit modes. Which is correct?
The HR series of loggers was originally released with 32K of memory
giving 32,000 readings in low res and 16,000 readings in high res mode. When a compatible
64K memory chip became available at a price that we could upgrade the HR's to 64K without
increasing the price, we decided to do so. This happened in Jan 2002. You can determine if
an HR logger has 32K or 64K by looking at its Firmware Number. This is shown in the Logger
Status Screen in the Logger Control Window. If the Firmware number is 3.3 or less the
logger has 32K memory. If the Firmware number is 3.4 or greater the logger has 64K of
memory. The Omnilog software was updated at the changeover so that it would correctly
identify the loggers that had 64K of memory. This was Omnilog Version 1.35. If you are
using an HR logger with a firmware number of 3.4 or greater you should be using Omnilog
1.35 or greater. The latest version of Omnilog can be downloaded from our website.
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The Help in the Omnilog software I got with the GP-HR mentions a Timer 1
function on the Start Logger Dialog box that can be set to 0 for standrd counting of
pulses that resests each logging interval or averages the pulses over a set time interval.
The Start Logger Dialog box on our software does not show this fuction yet it is shown on
example on your website. Do we have an out of date software version? If so what can we do
about it?
The Omnilog software is used to read a number of different logger
types
including our older DL series, the HR series you are using, our GP-MC Multi
channel logger and some Weather stations we also support. The help file
includes reference to Channel 1 Incremental Smoothing, Timer 1 Average Time
and Averaging Sub Interval. These functions are only available on the GP-MC
and Weather stations. They are not available on the HR or DL series of
loggers and will therefore not show in the Logger Control Screen when a DL or HR loggers
is connected.
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To maximise data storage we set channel 4 of a GP-HR to 8 bit
as there will never be
more than 255 pulses per logging period. Can you explain why the pulses are not being
recorded when channel 4 is set to 8 bit res? Is this not permitted or are we not setting
something up
right?
The HR series of data loggers has 12bit Analog to Digital converters
and 16 bit digital counters
In Hi Res mode the full AtoD value or Counter value is stored in the loggers memory
In Low Res mode only the Most Significant 8 bits are stored
In the case of the AtoD channels the Least Significant 4 bits are truncated off
In the case of the Counter the Least Significant 8 bits are truncated off
This means that if the counter has less than 256 counts it will be stored as 0 in Low Res
mode
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