Table 6 Analog Inputs; Table 7 Measurement Variants - Vaisala HMT140 User Manual

Property
Input impedance
Measurement range
Accuracy over Temperature Range:
-196 ... -90 °C (-320.8 ... -130 °F)
-90 ... -30 °C (-130 ... -22 °F)
-30 ... 0 °C (-22 ... +32 °F)
0 ... +50 °C (+32 ... +122 °F)
+50 ... +90 °C (+122 ... +194 °F)
Table 6 Analog Inputs
Property
Current Input Signals
Resolution
Accuracy
Input impedance
Overload protection
Voltage Input Signals
Resolution
Accuracy
Input impedance
Overload protection
Isolation
Contact Inputs
Table 7 Measurement Variants
Model
HMT141
HMT143
HMT144
HMT145
HMT146
Measurement Channels
1 Temperature and 1 Humidity Channel
2 RTD Temperature Channels
2 Voltage Inputs (0 ... 5 VDC)
2 Voltage Inputs (0 ... 10 VDC)
2 Current Inputs (0 ... 20 mA)
Description/Value
5.1K Ω
-196 ... +90 °C (-320.8 ... +194 °F)
±2.5 °C (±4.5 °F)
±0.75 °C (±1.35 °F)
±0.5 °C (±0.9 °F)
±0.25 °C (±0.45 °F)
±0.75 °C (±1.35 °F)
Description/Value
0 ... 22 mA
0.67 μA
±0.15 % F.S. at +25 °C (+77 °F)
62 Ω
40 mA
0 ... 5 V, 0 ... 10 V
0.0034 % F.S.
±0.15 % F.S. at +25 °C (+77 °F)
37K Ω
50 V max.
One common per logger
Open/Closed with magnetic reed switch cable
connections (Dry Contact)
Chapter 7 – Technical Data
57