Digital Series Digital Thermometer & Hygrometer
- Measures temperature and humidity
- Records minimum and maximum levels
- Measures humidity levels up to 99%
- Measures temperatures from ~50-+70 degrees C
- Large LCD display
- Time/date function
This Digital Series Digital Thermometer & Hygrometer can measure heat in both Degree C and Degree F. It will record your minimum and maximum temperature and humidity levels so you can keep your plants in the perfect conditions. It can be set to measure these levels over 12 or 24 hours and also shows the time on a large LCD display, along with temperature and humidity. The unit can desk top placed or wall hung if required. It has an alarm setting and also a clock and calendar function.
temperature: 0.1 oC ( 0.1o F)
Power supply: 1.5V ( AAA size ) X 1(not include)
temperature :± 1 oC ( 1.8 o F )
humidity :± 5 RH ( 40% ~ 80% )
Product dimension: 100 x 100 x 15mm
Storage condition: -20 oC ~60 oC , 20~80%RH
Weight : 115g
Temperature and How It Relates to Humidity
Temperature and relative humidity are closely related to each other. Relative humidity is measuring how much water is “being held” in the air compared to the maximum amount of water that can be held at that temperature. Warm air can “hold onto” more water than cool air. Plants will tend to thrive at different relative humidities depending on the temperature of the air. Once the air becomes too saturated with water, it will tend to form dew or films of water over leaves, which leads to mold.
For those interested in learning more about the science behind this, there is a term used by greenhouse growers known at VPD, or Vapour Pressure Deficit, that roughly measures the temperature and relative humidity.
According to Wikipedia: “the ideal range for VPD in a greenhouse is from 0.45 kPa to 1.25 kPa, ideally sitting at around 0.85 kPa. As a general rule, most plants grow well at VPDs of between 0.8 to 0.95 kPa.”
When growing plants, temperature is just as important as the Relative Humidity (RH) of the air, if not even more so! You need to control both temperature and RH at the same time to get the best results when growing.
- If the air is too hot and dry (high VPD), plants will tend to have stretched growth.
- If the air is too cool and humid (low VPD), plants are more prone to problems with mold or fungus.
Effects of Poor Humidity Management
We’re not out to scare you, but you should know what happens to a grow room with poor humidity management. We know how important humidity is because we’ve experienced every one of these problems firsthand
White Powdery Mildew is a fungal disease that will shows up high humidity environments. This can be tricky since young plants flourish in humid environments. Luckily, you can stave off WPM by making sure there is proper airflow in your grow area; a small oscillating fan – even on the low setting – works wonders.
Rot or mold is one of the worst pains a grower can experience as a result of poor humidity management. Imagine harvesting a huge, dense fruits from your plant only to see the insides are totally white or brown with mold. Flowers or fruits in this condition are unusable and 100% should be thrown away.
- Humidity is a factor that partly determines how much your plants will drink. If the air is dry, your plants will tend to drink more at their roots. If they’re already drinking more due to high temperatures, low humidity can cause them to drink a lot of water through their roots and uptake too-high levels of nutrients. If your plant takes in more nutrients than the plant can use, the leaves will begin to show yellow or burnt tips.
“Great little unit, has been reliable so far!!”
“This is good because of the extra functions you get on it compared to other hygrometers.”
William, County Durham
“Always use this website coz of quick delivery and never any problems.”
Established in 2012, we started Gone To Pot Hydroponics in a small industrial unit no bigger than 700 square feet. After just one year we had outgrown the shop and moved onto a new property in a nearby industrial estate. After just another year we needed more space and moved into our current unit. With over 2000 product lines over 2 floors, we have every piece of growing equipment you could ever need.
We have been helping beginners and pro’s to build, set-up and care for their grow rooms. We pride ourselves on maintaining a fantastic range of fantastic hydroponic products and brands at our Peterborough store, stocked with just as much expertise! We are always happy to help you giving advice on anything from nutrients, to what size fan you may need for your growing area.