Chapter 7 _____________________________________________________________ Technical Data
VAISALA _______________________________________________________________________ 175
Specifications
QML102 Logger
Table 40 QML102 Logger Specifications
Property Description/Value
Processor 32 bit Motorola
A/D conversion 16 bit
Data logging memory 1.7 Mbytes internal Flash memory
Up to 160 Mbytes on optional Compact
Flash memory card.
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
  Speed
  Parameters
One RS-232
Two optional plug-in slots for
communication modules for increasing the
number of serial I/O channels up to 5 pcs
300 ... 19200 bps
Configurable speed, start bits, data bits,
stop bits, parity, XON/XOFF, and check
sum
Voltage (external powering) 8 ... 14 VDC recommended (30 V max.)
Standard internal battery 1.3 Ah/6 V
Power consumption < 10 mA/6 V (typically with basic 5
sensors)
Temperature (operating)
-35 ... +55 °C
Temperature (storage)
-50 ... +70 °C
Humidity 0 ... 100 % RH
Emissions CISPR 22 class B (EN55022)
ESD immunity IEC 61000-4-2
RF field immunity IEC 61000-4-3