Spice and herb
dryer controller
Herbs and spices are dried for what they keep: aroma, colour and volatile oils. The RD150 holds the low, steady temperatures these products need for the full process time, with humidity sensing integrated into the same controller.
THE PROBLEM
Too hot and the aroma goes. Too slow and the batch spoils
Leafy herbs such as mint, basil and coriander lose their essential oils and green colour when they are dried hot. Chillies, turmeric and ginger are denser and need longer, controlled drying to reach a safe moisture level. In both cases the margin between a premium batch and a downgraded one is a few degrees and a few hours.
Spice processors are often judged on colour values and oil content by the buyer, and on microbial load by the regulator. Sun drying and simple hot-air dryers give little control over either. A dryer that holds temperature for a measured time, and keeps the record, gives the processor something to stand on in those conversations.
HOW WE SET IT UP
Low, steady and timed
Temperature and time in one controller
The RD150 holds the drying temperature and runs the process timer together. When the time is up the stage ends, which removes the guesswork of a separate thermostat and kitchen timer.
Humidity sensing integrated
We integrate a compatible humidity sensor into the RD150 so chamber humidity is read by the same controller. Your team sees temperature, humidity and elapsed time on one display and in one data record.
Parameters developed per product
The right settings for mint are different from those for chilli or cardamom. We work with your process team on trials to develop product-specific parameters, then store each one as a recipe.
Records for buyers
Connected units send temperature and process time to RIOD Live or your own server. Each lot can be exported as a PDF or Excel record with an audit trail.
AT A GLANCE
Spice and herb drying with the RD150
- What is recorded
- Temperature and process time per lot, with chamber humidity
- Hardware
- RD150 temperature, humidity and timer controller with a compatible humidity sensor
- Recipes
- Multiple stored profiles, one per product
- Connectivity
- Optional connected variant, MQTT over TLS 1.2 to RIOD Live or your own server
- Safety
- Built-in temperature cut-out, sensor failure detected and reported
- Engineering note
- Product-specific parameters are developed with your process team through trials
FAQ
Questions buyers ask us
What temperature should herbs and spices be dried at?
It depends on the product. Leafy herbs are usually dried at lower temperatures to keep colour and oils, while dense roots and pods need longer drying. We develop the parameters with your process team through trials and store each one as an RD150 recipe.
Can the dryer controller measure humidity as well as temperature?
Yes. We integrate a compatible humidity sensor with the RD150, so temperature, humidity and process time are handled by one controller and recorded together.
How does a controlled dryer help with spice export buyers?
Buyers look at colour, oil content and microbial results. A dryer that holds a defined temperature for a defined time, and records it for each lot, makes those results more repeatable and gives you documentation to share.
Can we offer several herb profiles on one dryer?
Yes. The RD150 stores multiple recipes, so one dryer can run mint, basil, chilli or turmeric with the parameters developed for each.
Drying herbs or spices to a buyer specification?
Tell us the products, your current dryer and the quality targets. We will plan trials and configure the RD150 around them.