Vaisala HMP155 - Manual (Page 73)

Chapter 7 ____________________________________________________________ Technical Data
VAISALA _______________________________________________________________________ 71
CHAPTER 7
TECHNICAL DATA
This chapter provides the technical data of the product.
Performance
Relative Humidity
Table 16 Relative Humidity Performance
Description Value
Measurement range
0 ... 100 %RH
Accuracy (including non-linearity, hysteresis and repeatability)
±1% RH (0 ... 90% RH) at +15 ... 25 °C (59 … 77 °F)
±1.7% RH (90 ... 100% RH)
at -20 … +40 °C (-4 … 104 °F) ±(1.0 + 0.008 × reading)% RH
at -40 ... -20 °C (-40 … -4 °F) ±(1.2 + 0.012 × reading)% RH
at +40 … +60 °C (104 … 140 °F) ±(1.2 + 0.012 × reading)% RH
at -60 ... -40 °C (-76 … -40 °F) ±(1.4 + 0.032 × reading)% RH
±0.6% RH (0 ... 40% RH)
Factory calibration uncertainty
(+20 °C)
1
±1.0% RH (40 ... 97% RH)
Recommended humidity sensor
HUMICAP
®
180R for typical applications
HUMICAP
®
180RC for applications with chemical purge
and/or warmed probe
Response time for HUMICAP
®
180R(C) at 20 °C in still air with
sintered PTFE filter
63% 20
s
90% 60 s
1
Defined as ± 2 standard deviation limits. Small variations possible, see also calibration
certificate.