Virrib

["W.J.Thompson" <southernevm@xtra.co.nz>]

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From: "W.J.Thompson" <southernevm@xtra.co.nz>
Reply-To: southernevm@xtra.co.nz

Attn Bill Pogue:

We have been selling Virrib moisture measuring probes here in New
Zealand for several years. The principle is Time Domain Transmissometry.
The probes are a very low cost but effective means to measure soil
moisture and provide an average (by % moisture) over a volume of 22
litres of the medium. We have them operating in sports fields,
nurseries, orchards, effluent disposal etc.
However, a Canadian company E.S.I. Environmental Sensors Inc has taken
this technology and vastly improved it. We have had quality and
calibration problems with the AMET Virrib and now prefer to deal in the
ESI equipment called GROPOINT which we also now represent in New
Zealand. GroPoint has a range of probes and probe shapes, quality is not
a problem, calibration is excellent, and there is a lot of downstream
gear such as multiplexing, datalogging, computer interface etc.
(Although Amet claim to have some downstream capability, were unable to
access it or understand it.) The only downside with GroPoint is that it
is quite a lot more expensive!
Warwick Thompson
Integral Instruments
Auckland
New Zealand
www.integral.insts@xtra.co.nz