Which moisture is correct?

[Rob Holmes]

Harvested the beans earlier in the week.

Our Sinar Agripro 6095 read them to be 17.5 - 19% (this was correct at a moisture Meter Clinic in earlier in the year)
To double check, we took a sample to the local grain store for him to read, he put them through both his Dickey John analyisers (GAC 2100 & GAC 2500) and they both read 20.5%
... but we put 200g sample in the oven (bottom oven in Aga) for 24 hrs and they lost 30g, we reckon them to be 15%

Which one would be nearest?

 

[Will Blackburn]

I do know that wheat loses 1.2% weight per 1%. Don't know about beans. You should keep putting them back in the oven and weighing until you get a constant reading.

 

[sjt01]

At the moisture meter clinic, did you test with beans? And were the samples in a range, or just at one moisture content? If the answer to both is yes, then the Sinar might well be correct. Our old Marconi was spot on at 14%, but way off over 18% (its been scrapped for a while).

If oven testing, the oven temperature should be closely controlled at 105°C. Below this the indicated moisture content will be low, higher temperatures will show higher moistures.

Stephen

 

[colhonk]

The end user`s is always right. whether it is wrong or not.

 

[Brisel]

I do know that wheat loses 1.2% weight per 1%. Don't know about beans. You should keep putting them back in the oven and weighing until you get a constant reading.

This.

I have taken some Propino samples to my local central store that disgareed with my Marconi. The grain has sprouted in the wet August before we got the combine to it & it still seems to have too much "nature" in it. Their ring calibrated Foss Infratec said 16.6% but with 2 - 4 anomalies in each 10 sub samples. Their carefully calibrated Sinar showed 13.8% which is what my Marconi made it too. I have a dilemma - feed mills are likely to have Sinars or Protimeters so no problem. Export facilites will have Foss type machines. Do I dry it again & how do I know when it is dry enough with my Marconi??

@crazy_bull

 

[crazy_bull]

This.

I have taken some Propino samples to my local central store that disgareed with my Marconi. The grain has sprouted in the wet August before we got the combine to it & it still seems to have too much "nature" in it. Their ring calibrated Foss Infratec said 16.6% but with 2 - 4 anomalies in each 10 sub samples. Their carefully calibrated Sinar showed 13.8% which is what my Marconi made it too. I have a dilemma - feed mills are likely to have Sinars or Protimeters so no problem. Export facilites will have Foss type machines. Do I dry it again & how do I know when it is dry enough with my Marconi??

@crazy_bull

No idea, seems very odd to have so much variation. Perhaps take a sample to the end destination to see what they make it, and dry or not accordingly.

C B

 

[8770mike]

Harvested the beans earlier in the week.

Our Sinar Agripro 6095 read them to be 17.5 - 19% (this was correct at a moisture Meter Clinic in earlier in the year)
To double check, we took a sample to the local grain store for him to read, he put them through both his Dickey John analyisers (GAC 2100 & GAC 2500) and they both read 20.5%
... but we put 200g sample in the oven (bottom oven in Aga) for 24 hrs and they lost 30g, we reckon them to be 15%

Which one would be nearest?

It doesn't matter what you test at really mate as when they get to the mill they are god when it comes to moisture !!, if you can double check with a neighbour and then get them a per cent lower to be safe then you shouldn't have an issue with rejected loads !!!