Fixed probe. Measures humidity, temperature and calculates dew/frost point.
Fixed probe. Measures humidity, temperature and calculates dew/frost point.
Features
Applications
| Parameters | Relative humidity and temperature | 
| Probes | Fixed probe | 
| Probe Application Note | 14°F (-10°C) 0 to 100% RH  | 
	
| Device Type | Handheld device (% RH/°C) | 
| Functions | Spot measurements time programmable interval logging MIN/MAX/AVG | 
| Range of Application | 14 to 140°F (-10 to 60°C)/0 to 100% RH (non-condensing) | 
| Psychrometric Calculations | Dew/Frost point (Dp/Fp) Wet bulb temperature (Tw) Enthalpy (H) Vapor concentration (Dv) Specific humidity (Q) Mixing ratio by weight (R) Vapor pressure (E) Saturation vapor pressure (Ew) Saturation vapor density (SVD)  | 
	
| Calculation Method | WMO standard | 
| Display Refresh Rate | 1 s (typical) | 
| Logging Interval | 1 s to 24 hrs | 
| Storage Capacity | 8 x 8000 data points | 
| Communication Interfaces | Micro-USB port, HW4 compatible >V3.9 | 
| Housing | ABS, TPR | 
| IP Protection Rating | IP65 | 
| Battery | Lithium Polymer, 3.7 V, 1000 mAh (integrated) 48 hours - Logging every 30 s, screen off 10 hours - Screen always on  | 
	
| Storage and Transport Conditions | 14 to 113°F (-10 to 45°C)/10 to 90% RH | 
| Dimensions | 6.2 x 2.4 x 1.1" (160 x 63 x 30 mm) | 
| Weight | 0.4 lbs (185 g) | 
Click on a category to view a selection of compatible accessories with the Rotronic HP31 Digital Psychrometer, 0 to 100% RH, -10 to 60°C.
| Parameters | Relative humidity and temperature | 
| Probes | Fixed probe | 
| Probe Application Note | 14°F (-10°C) 0 to 100% RH  | 
	
| Device Type | Handheld device (% RH/°C) | 
| Functions | Spot measurements time programmable interval logging MIN/MAX/AVG | 
| Range of Application | 14 to 140°F (-10 to 60°C)/0 to 100% RH (non-condensing) | 
| Psychrometric Calculations | Dew/Frost point (Dp/Fp) Wet bulb temperature (Tw) Enthalpy (H) Vapor concentration (Dv) Specific humidity (Q) Mixing ratio by weight (R) Vapor pressure (E) Saturation vapor pressure (Ew) Saturation vapor density (SVD)  | 
	
| Calculation Method | WMO standard | 
| Display Refresh Rate | 1 s (typical) | 
| Logging Interval | 1 s to 24 hrs | 
| Storage Capacity | 8 x 8000 data points | 
| Communication Interfaces | Micro-USB port, HW4 compatible >V3.9 | 
| Housing | ABS, TPR | 
| IP Protection Rating | IP65 | 
| Battery | Lithium Polymer, 3.7 V, 1000 mAh (integrated) 48 hours - Logging every 30 s, screen off 10 hours - Screen always on  | 
	
| Storage and Transport Conditions | 14 to 113°F (-10 to 45°C)/10 to 90% RH | 
| Dimensions | 6.2 x 2.4 x 1.1" (160 x 63 x 30 mm) | 
| Weight | 0.4 lbs (185 g) | 
Click on a category to view a selection of compatible accessories with the Rotronic HP31 Digital Psychrometer, 0 to 100% RH, -10 to 60°C.