Online dissolved oxygen analyzer ZGW-250

Ø Main Features：

l Large screen dot matrix LCD 192 × 64 (or 320 × 240), multi parameter display, rich content.

l The adoption of advanced embedded system design and surface mount technology has improved

Performance and reliability, compliance with EMC design requirements

l Fully guided operation mode in both Chinese and English, easy to use, and easy to understand.

l Programmable automatic or manual temperature compensation method, flexible and convenient to use.

l Two completely isolated current signals can be output, and the output current range can be set separately.

l Equipped with upper and lower limit alarm functions, the alarm values can be set separately.

l Equipped with a standard 485 digital communication interface, it can achieve long-distance communication.

l It has the functions of storing and querying historical data, operation and calibration records.

l Can query 100000 historical data, 1000 operational records, and 100 calibration records.

l High protection level, reaching IP66, can meet various complex environmental requirements.

l The electrode zero drift is small and the response speed is fast.

l The residual current of the electrode is small, the maintenance is simple, the service life is long, the structure is firm, and the anti pollution ability is strong.

l Equipped with polarization voltage scanning function, it can automatically complete electrode self diagnosis.

Ø Main Technical Performance：

Display: Chinese display, 192 × 64 (or 320 × 240) dot matrix LCD

Range: (0-20) µ g/L, (0-200) µ g/L, (0-20) mg/L (automatic shift)

Resolution: 0.1 µ g/L; 0.01 mg/L；

Basic error:<± 1.5% F.S or 1 µ g/L (whichever is greater)

Response time: 90% change achieved within 60 seconds at 25 ℃

Temperature sensor: thermistor

Temperature measurement range: 0.0~99.9 ℃

Temperature measurement accuracy: ± 0.5 ℃

Temperature measurement resolution: 0.1 ℃

Temperature compensation range: 0-50 ℃ (manual or automatic)

Sample conditions: Temperature range: 5-50 ℃

Flow range: 50-300ml/min (optimal around 150ml/min)

Allowable solid content of water sample: ≤ 5 microns (no gelatinous substances allowed, no oil or grease)

Environmental temperature: 5-45 ℃

Environmental humidity: ≤ 90% RH (no condensation)

Output current: (4-20) mA (two-way isolated output)

Current accuracy: ± 1% FS

Current load:<800 Ω

Power supply: AC (85-265) V, frequency (50-60) Hz

Power: ≤ 10W

Alarm output: Two channel alarm output, DC 5A/30V or 5A/250V

Storage and transportation temperature: (-20~55) ℃

Dimensions: 144mm x 144mm x 210mm (width x height x depth)

Disk mounting hole size: 139mm × 139mm

Weight: Approximately 1.5kg