Humidity and Dew-Point Instruments
Meteorological
PFMini72
Relative Humidity and Temperature Probe
Technical Specifications
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
HYGROSMART ®
INTERCHANGEABLE
MODULE
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
PFMini72 relative humidity probes are equipped with
the Hygrosmart relative humidity sensor/converter. This
interchangeable module has miniaturized electronics and
does not require recalibration.
Mechanical specification
Highlights
•
Designed for meteorological applications
•
Based on the interchangeable Hygrosmart module
-20 to +80°C (-4 to +176°F)
-20 to +80°C (-4 to +176°F)
-40 to +85°C (-40 to +185°F)
Dimensions
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’)
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 filter
K1
SS cap slotted with PTFE filter
Z1
Issue No: PFMini72_97179_V3_UK_0811
17
www.michell.com
Please note: Michell Instruments adopts a continuous development program which sometimes
necessitates specification changes without notice. Please contact us for latest version.
Humidity and Dew-Point Instruments
Electrical Connections
4 wire cable
6 wire cable
White
Output RH +
White
Output RH +
Black
Common ground
Black
Common ground
Power supply V+
Red
Power supply V+
Red
Blue
Output temperature +
Blue
Pt100
Yellow
Green
Ordering Codes
To construct the order code, select the relevant feature from the tables below, starting with the base model, which is {Feature A} and then add on options to create a
string: {Feature A}+{Feature B}+{Feature C}+{Feature D}+{Feature E}
Order example: PFMINI72+1+B1+2+K1
Relative humidity and temperature mini probe PFMini72, Pt100 direct output, stainless steel body, 2m (6.5’) cable, stainless steel slotted cap with mesh filter
PFMINI72
1
B1
Base Model {Feature A}
Relative humidity and temperature mini
probe
PFMINI72
Stainless steel slotted cap with mesh filter
K1
Stainless steel slotted cap with PTFE filter
Z1
Cable {Feature D}
No temperature output
0
Pt100 direct
1
0-1 V (-20 to +80ºC (-4 to +176ºF) range)
B
2m (6.5’)
Body {Feature C}
© Michell Instruments 2009-2011
K1
Filter {Feature E}
Temperature {Feature B}
Stainless steel
2
B1
18
2
Meteorological
PFMini72