Vaisala HMT140 User Manual
Page 60
Appendix Specifications and Troubleshooting
52
VAISALA
Accuracy over temperature range continued:
at -40 ... 0 °C and +40 ... +80 °C
(-40 ... +32 °F and +104 ... +176 °F)
±
0.4 °C (
±
0.72 °F)
Temperature sensor
Pt1000 RTD 1/3 Class B IEC 751
Table 3: Analog Inputs
Property
Description / Value
Current input signals
0-22 mA
Resolution: 0.67 µA
Accuracy:
±
0.15 % F.S. at +25 °C
Input Impedance: 62 Ohms
Overload Protection: 40 mA max.
Voltage input signals
0-5 V, 0-10 V
Resolution: 0.0034% F.S.
Accuracy:
±
0.15 % F.S. at +25
Input Impedance: 37K Ohms
Overload Protection: 50 volts max.
Boolean Contact input signals
Open/Closed with magnetic reed switch
cable connections (Dry Contact)
Isolation
One common per logger
Resistive Temperature input signal
Pt 100 RTD / 4 wire
Class A IEC 751
Input Impedance: 5.1K Ohms
RTD Measurement range
-196 °C to +90 °C
RTD Accuracy over temperature range
-196 to -90 +/- 2.5
°
C
-90 to -30 +/- 0.75
°
C
-30 to 0 +/- 0.5
°
C
0 to 50 +/- 0.25
°
C
50 to 90 +/- 0.75
°
C
Table 2: Humicap Temperature Measurement Specifications
(with HMP110)
Property
Description / Value