General-tools-and-instruments WK2017SD Manual de usuario descargar pdf (Pagina 17)

SPECIFICATIONS

Embedded microcontroller

Custom one-chip LSI device

Display type Liquid-crystal with green backlight

Display size 2.05 x 1.5 in. (52 x 38mm)

Parameters measured pH, ORP, conductivity, TDS, DO content, salt content

Measurement range 0 to 14 for pH; -1999 mV to +1999 mV for ORP; conductivity

up to 200 mS (milliSiemens); TDS up to 132,000 ppm;

DO up to 20 mg/L; salt content up to 12% by weight.

Measurement accuracy ± (0.02 pH units + 2 digits) for pH; ± (0.5% of reading

+ 2 digits) for ORP; ± 2% of full-scale reading + 1 digit for

conductivity and TDS; ± 0.8ºC/± 1.5ºF for temperature;

± 0.4 mg/L for DO in solution and 0.1% for oxygen in air;

±0.5% of value for salt

Measurement resolution 0.01 unit for pH; 1 mV for ORP; for conductivity:

0.1 uS @ 200 uS full-scale (f.s.), 0.001 mS @ 2 mS f.s.,

0.01 mS @ 20 mS f.s., 0.1mS @ 200 mS f.s.;

for TDS: 0.1 ppm @200 ppm f.s., 1 ppm @2,000 ppm f.s.,

10 ppm @ 20,000 ppm f.s., 100 ppm @ 100,000 ppm f.s.;

0.1ºF/0.1ºC for temperature; 0.1 mg/L for DO in solution and

0.1% for oxygen in air; 0.01% of reading for salt

Temperature compensation

Automatic between 32º and 150ºF (0º and 65ºC) when using

optional ATC temperature probe; manually settable between

32º and 212ºF (0º and 100ºC) without ATC probe

Storable/recallable readings

Maximum, minimum

Datalogging sampling time

Settable between 1 second and 8 hours, 59 minutes,

59 seconds (in automatic datalogging mode)

SD card capacity 1 GB to 16 GB

Settable parameters Date, time, auto power off, beep sound, sampling time,

decimal point or comma decimal division, temperature unit,

compensation temperature. Also salt and altitude

compensation (DO mode only)

Operating temperature 32º to 122ºF (0° to 50ºC)

Operating relative humidity

0 to 85%

Power source 6 Alkaline “AA” batteries or optional 9-VDC AC adapter

Power consumption 14 mADC (normal operation, with backlight off and SD card

not saving data); 37 mADC with backlight on and card saving

data; 49 mADC with backlight on and card saving data

Dimensions of meter 6.97 x 2.68 x 1.77 in. (177 x 68 x 45mm)

Weight of meter 1.08 lb. (489g)

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General-tools-and-instruments WK2017SD Manual de usuario Pagina 17

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