Product guide

17
Humidity and Dew-Point Instruments
Please note: Michell Instruments adopts a continuous development program which sometimes
necessitates specifi cation changes without notice. Please contact us for latest version.
www.michell.com
Meteorological
PFMini72
Relative Humidity and Temperature Probe
Dimensions
Technical Specifi cations
Performance
Measurement range (RH) 0–100% RH
Measurement range (T) -20 to +80°C (-4 to +176°F)
Accuracy at 23°C (73°F)
Humidity
<±2% RH (5–95% RH)
Accuracy at 23°C (73°F)
Temperature
±0.2°C (±0.36°F)
Stability – RH Sensor <±1% RH/year
Response time – RH Sensor <10 sec typical (for 90% of the step change)
Electrical output/input
Output signal (RH) 0–1 V
Output signal (T) 0–1 V or
3-wire 1/3 DIN Pt100 direct
Supply voltage 5.5–32 V DC
Current consumption 2 mA max
Operating conditions
Operating temperature
Probe
Housing
Storage
-20 to +80°C (-4 to +176°F)
-20 to +80°C (-4 to +176°F)
-40 to +85°C (-40 to +185°F)
Mechanical specifi cation
Ingress protection IP65 (NEMA 4 level)
Housing material 316L
Dimensions L=92mm, ø18mm (L=3.62”, ø0.70”)
Weight 150g (5.29oz)
Electrical connections 4- or 6-wire output cable, length 2m (6.5’)
PFMini72 relative humidity probes are equipped with
the Hygrosmart relative humidity sensor/converter. This
interchangeable module has miniaturized electronics and
does not require recalibration.
Highlights
• Designed for meteorological applications
• Based on the interchangeable Hygrosmart module
INTERCHANGEABLE
MODULE
HYGROSMART ®
Issue No: PFMini72_97179_V3_UK_0811
Accessories and Spare Parts
Mounting clip 2510367
Hygrosmart without Pt100 output I7-0-00-0
Hygrosmart with Pt100 output I7-0-00-1
SS cap slotted with mesh fi lter K1
SS cap slotted with PTFE fi lter Z1