Rotronic HP31 Handheld Humidity Meter (-10…60 °C / 0…100 %rh)

Device type: Handheld device (%rh / °C)

Compatible probes (HP32): Fixed probe

Application range: -10…60 °C 

Storage range: -10…45 °C 

Probe application range: -10…60 °C | 0…100 %rh (non-cond.)

Functions:

Spot measurements

Programmable logging interval 

MIN / MAX / AVG

Accuracy @ 23°C: ±2 %rH / ±0.3 °C

Logging interval: 1 s…24 h

Memory capacity: 8 x 8000 data points

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)

Integrated battery Lithium polymer, 3.7 V, 1000 mAh

48 h – Logging every 30 s, screen off

10 h – Screen always on

PC interface USB-C to USB-A, HygroSoft Software

compatible

Housing / Mechanics

Enclosure material: ABS, TPR

IP protection class: IP65

Dimensions: 160 x 63 x 30 mm

Weight: 185 g

Datasheet