MAWS HydroMet™ Systems for Meteorological and Hydrological ...

Chapter 10 ____________________________________________________________ Technical Data
CHAPTER 10
TECHNICAL DATA
QML201 Logger
QML201 Logger Specifications
Property
Processor
A/D conversion
Data logging memory
Sensor inputs
Typical accuracy across
measured temperature
range –50 °C ... +80 °C
Maximum error across
measured temperature
range –35 °C ... +50 °C
Description / Value
32 bit Motorola
16 bit
1.7 Mbytes internal Flash memory
Several hundreds Mbytes on optional
Compact Flash memory card
10 Analog inputs (20 single ended inputs)
2 counter / frequency inputs
Internal channel for PMT16A pressure
transducer
Better than ± 0.06 °C
Less than ± 0.12 °C
Maximum error at 0 °C Less than ± 0.06 °C
Voltage measurement With factory calibration:
±2.5V range
Better than 0.04 % reading ± 150 µV
±250mV range
Better than 0.04 % reading ± 20 µV
±25mV range
Better than 0.04 % reading ± 6 µV
±6.5mV range
Better than 0.12 % reading ± 6 µV
Frequency measurements 0.003 % + resolution 241 nsec (up to 10 kHz)
Common mode range
Real-time clock
Standard
With GPS option
Serial communication
Standard
Optional
+5 V / -4 V
Better than 20 sec/month
Configurable, default 5 sec/month
One RS-232, one RS-485
Two (2) optional plug-in slots for
communication modules to increase the
number of serial I/O channels up to 7 pcs
VAISALA ________________________________________________________________________ 69