Chapter 6 ____________________________________________________________ Technical Data
VAISALA ______________________________________________________________________ 137
Logger QML102T
Table 14 QML102T Specifications
Property Description/Value
Processor 32-bit Motorola
A/D conversion 16-bit
Data logging memory 1.7 Mbytes internal Flash memory
Sensor inputs 10 Analog inputs (20 single ended inputs)
2 counter / frequency inputs
Internal channel for PMT16A pressure
transducer
Typical accuracy across
measured temperature range
-50 °C ... +80 °C
Better than ± 0.06 °C
Maximum error across
measured temperature range
-35 °C ... +50 °C
Less than ± 0.12 °C
Maximum error at 0 °C Less than ± 0.06 °C
Voltage measurement
±2.5V range
±250 mV range
±25 mV range
±6.5 mV range
Better than 0.08 % F.S. ± 150 µV
Better than 0.18 % F.S. ± 15 µV
Better than 0.18 % F.S. ± 3 µV
Better than 0.18 % F.S. ± 3 µV
Frequency measurements 0.003 % + resolution 241 ns (up to 2 kHz)
Common mode range +5 V / -4 V
Real-time clock
Standard Better than 20 sec/month
Serial communication
Standard
Optional
RS-232 for maintenance
2 pcs RS-232 for handheld display and
laptop PC (max. distance 70 m)
2 pcs RS-485 for smart sensors and
remote displays, speed 300 ... 4800 bps
(max. distance 2.5 km)
Voltage (external powering) 8 ... 14 VDC recommended (30 V max)
Standard internal battery 1.2 Ah/6 V
Temperature (operating)
-40 ... +55 °C (-31 ... 131 °F)
Temperature (storage)
-50 ... +70 °C (-58 ... 158 °F)
Humidity 0 ... 100 %RH
Emissions CISPR 22 class B (EN55022)
ESD immunity IEC 61000-4-2
RF field immunity IEC 61000-4-3
EFT immunity IEC 61000-4-4
Surge (lightning pulse) IEC 61000-4-5
Conducted RF immunity IEC 61000-4-6
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