THERMOMETER/HYGROMETER WITH PROBE STANDARD

Description

THERMOMETER/HYGROMETER WITH PROBE STANDARD is the essential dual-measurement environmental monitoring instrument that provides real-time temperature and relative humidity readings from your grow room canopy zone, giving UK growers the data they need to manage their growing environment with confidence. We have been recommending quality environmental monitoring equipment to UK growers since 2017 as the foundation of informed, responsive grow room management.

Why Accurate Environmental Monitoring Is Non-Negotiable in Controlled Growing

Temperature and relative humidity are the two environmental parameters with the most immediate and direct impact on plant transpiration, photosynthesis rate, and susceptibility to fungal disease. Vapour pressure deficit — the calculated relationship between temperature and humidity — is the master variable that determines how hard the plant must work to transpire, and therefore how efficiently it can deliver water and dissolved nutrients from roots to leaves. A grow room that operates outside the optimal VPD range for its current growth stage will show measurably inferior growth rates, reduced nutrient uptake efficiency, and elevated vulnerability to botrytis and powdery mildew in high-humidity conditions, or to transpiration stress and nutrient burn in low-humidity, high-temperature conditions. The probe format of this instrument allows the sensing element to be positioned precisely at canopy level — where temperature and humidity directly affect your plants — rather than at the more accessible but less representative position of a wall-mounted unit.

Placement, Calibration, and Using Environmental Data Effectively

Position the probe at mid-canopy height in a location with good air circulation, away from direct light sources and exhaust outlets that would give locally unrepresentative readings. Check the display unit’s accuracy against a known reference occasionally — inexpensive thermohygrometers can drift over time in humid environments. For grow rooms where environmental control equipment is connected to a controller, verify that the controller’s internal sensor readings align with this independent monitoring instrument as a cross-check. Record temperature and humidity readings at multiple points in the day — lights-on peak, lights-off low — to understand the full environmental range your plants experience. Pair with an environmental controller and EC fan for automated environmental management. Browse our full range of environmental monitoring and control equipment.