– Sensor for relative humidity and temperature    – Internal memory: 80 MB

General Technical specifications for the Particle Counter DT-9880

Environmental Conditions 

0 … 50 °C, 10 … 90 % RH (non-condensed)

Display

2,8 ” / 320 x 240 pixels, back-light, coloured

Battery

rechargeable, operating time ~ 4 hours

Dimension

240 x 75 x 55 mm

Weight

420 g

Memory

internal: 80 MB
external: micro SD card up to 8 GB (optional)

Particle Counter:

Measurable sizes of particles

0,3 / 0,5 / 1,0 / 2,5 / 5,0 und 10 µm

percolation rate 

2.83 L/min

coincidence error

<5 % with particle size > 0,45 µm

Efficiency of counting 

50 % with particle size 0,3 µm;
100 % with size> 0,45 µm 

Data storage:

5000 data sets

Sorts of counting

cumulative, differentially, concentration

HCOC sensor:

Measuring range

0,01 … 5 ppm

precision

±5 %

Display resolution

0,01 ppm

Temperature and relative humidity:

Temperature:

Measuring range

precision

0 … +50 °C    ±0,5 °C with +10 … +40 °C otherwise ± 1,0 °C

Dew poit temperature:

Measuring range

precision

0 … +50 °C    ±0,5 °C with +10 … +40 °C otherwise ± 1,0 °C

Relative humidity:

Measuring range   precision

0 … 100 % RH

±3 % RH with 40 … 60 %       ±3,5 % RH with 20 … 40 % and 60 … 80 %   ±5 % RH with 0 … 20 % and 80 … 100 %