Right temperature, right time!

Everyone understands temperature accuracy is very important for a temperature data logger. We agree and that’s why we only use NIST calibrated sensors for our products.

However we want to call attention to one specification of the temperature data loggers in this article, that most users forget or may be not awared of. That’s the time accuracy of the loggers, especially for these disposable offline USB data loggers, like our Cydiance C1.

Temperature accuracy is important. However if the times and dates registered with this accurate temperature are unaccurate, these records are then leading you to wrong impressions and reactions.

How does a data logger keep track of time?

A typical USB data logger usually runs with a button size battery. It is an isolated system with own CPU, memory and an internal clock. This internal clock, as we called a crystal oscillator, generates electrical signals at a precise frequency, which then provides the tracking of time.

Accuracy of this crystal oscillator is speced as PPM, lower PPM means higher accuracy and apparently higher cost. The temperature data logger industry leaders typically use 20PPM, while some low cost solution adopts 50PPM. In Cydiance C1, as our premium solution, we are using 5PPM.

What does this time accuracy actually mean?

Let’s make a quick math. 5PPM presents a ±5 seconds unaccuracy every 1,000,000 seconds. That means, every 30days(2,592,000 seconds), the difference will be ±12.96 seconds, and if we put it in 365 days, it will be ±157.68 seconds. that’s about 2.6 minutes.

That basically explains, you can still trust the time accuracy on C1 after the device has been placed on shelf for one year.

We haven’t considered about the environmental temperature condition in this calculation. In some cases temperature affects the crystal oscillator very much, it may amplify the difference by 4-5 times. And that’s why we insist on using a much higher component on our C1 temperature data loggers.

Don’t eat, let’s play!

What would you do with 24,638 tasty cherries?

The Chilean in Shanghai made something special and created the longest fruit line as recorded in Guinness book.

Photo: China Daily

The line of cherries made up a shape of 2 big cherries.

Ronard Brown, the ASOEX president, took the certificate from Guinness.

Ok, interesting.

Guess what? I’ll contact the watermelon association here and break the record in next summer. LOL.

During the event, the Euro-Asia director from ASOEX gave a number, said Chile exported to China 160,000 ton cherries last year. Said it symbolized the trip route from Chile to China.

And I have a good question.

How long would it be if we line up these 160,000 ton cherries? Would it cover the route from Chile to China?

I made a rough estimate, 7g and 2.5cm per cherry, guess what do I get? These cherries will line up to a total length of approx 938,900 km!!

And if we line them along the equator, we will have more than 23 lines around the planet!!

I just can’t stop thinking millions of cherries flying over the sky…

Argentinians come to replace Americans?

Starting from this post, I’m going to share some viewpoints for the perishable industry from a specific angle. Not fixed but mostly related to China, according to my knowledge base and information source.

China not the biggest exporting market for US agro exporters anymore

According to recent report issued from the States Congress, China has dropped to 3rd place as an export destination for US agricultrue products in the past 2018, from 1st place as in 2017, with a total affected product worth of 20 billion USD.

5 hours before I’m writing this post, China-US has just finished the latest round of negotiation. Result has been kept sealed but the negotiation last one more day than expected, so there must be something important agreed or, or maybe not… but another long fight?? Donald Trump seemed to be positive though on twitter.

Chilean and Argentinian take the chance to go

US exported 19% of it’s cherries to China in 2017, and now it’s a good chance for new marketers to come in filling the gap, while China is also seeking replacement.

Argentina seized the opportunity, their first 8 containers of cherries has departed this week to catch the Chinese New Year event, a month after related agreement signed between the 2 countries.

Furthermore, thousands of containers of cherries from Chile are arriving China by the same time. Chile is building a strong market image in China now on cherries after years of marketing. Tomorrow (Jan10th, 2019), the Chile cherry exporters will launch an event in Shanghai, to create a longest lineup of fruit (cherry?) for a Guinnes World Records. Sounds wei…wonderful.

Ok now question is, do you think Chile and Argentina will take this 19% cakes from the table?

My point? I’ll follow Trump’s twitter.

OK, thanks for reading, I hope you like it. Let me know if you guys want to hear any specific topics.