Online pH analyzer ZGW-270

Ø Key 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

Product performance and reliability meet EMC design requirements.

l Chinese and English bilingual programmable switching to meet different user needs.

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 Using high-performance composite electrodes for accurate measurement and rapid response.

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 application requirements.

l The brand new circulation pool design has a simple structure and strong anti-interference ability.

Ø Main Technical Performance：

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

Measurement range: (0.00~14.00) pH

Resolution: 0.01pH

Instrument reading error: ± 0.05pH

Input impedance: not less than 1 × 1012 Ω

Response time: (T90) 90s (25 ℃)

Temperature sensor: Pt1000

Temperature range: (0.0~99.9) ℃

Temperature accuracy: ± 0.5 ℃

Temperature resolution: 0.1 ℃

Temperature compensation: (0.1-60.0) ℃ (manual or automatic)

Sample conditions: Temperature range: (5-50) ℃

Flow range: no more than 6 liters per hour

Environmental temperature: (5-45) ℃

Environmental humidity: not exceeding 90% RH (without condensation)

Current output: (4-20) mA (two-way isolated output)

Current accuracy: ± 1% FS

Current load:<800 Ω

Alarm output: two-way alarm output, DC 5A/30V or AC 5A/250V

Storage and transportation temperature: (-20~55) ℃ (excluding electrodes, electrodes should be above 0 ℃)

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

Hole size: 139mm × 139mm

Power supply: AC (85-265) V, frequency (45-65) Hz

Power: ≤ 10W