PHG-7685A Industrial pH MeterDetailed product description：

Characteristics of PHG-7685A Industrial pH Meter:

The structural characteristics of the instrument are disk mounted, dry and wet separated structure, which is easy to install, operate and maintain
The instrument displays in a backlit dot matrix format using a Chinese menu. Simultaneously display the pH value (converted to 25 ℃) and temperature value (℃) of the tested water sample
It has a (4-20) mA DC isolated output signal, corresponding to the upper and lower output limits of pH value, which can be set arbitrarily within the range of ≥ 2pH
Equipped with upper and lower limit alarm functions, with a contact capacity of 2A and 220V AC (non inductive)
Equipped with power-off data protection function, even if there is an abnormal power outage, the data stored inside the instrument is still valid. After restarting, it can enter the measurement without calibration
Equipped with automatic positioning, automatic slope calculation, and automatic temperature compensation functions
By selecting equipotential points, the temperature coefficients of pure water and ammonia water systems can be compensated for separately
Adopting dual high impedance preamplifier input circuit, low internal resistance pH glass electrode, the instrument has good stability, fast response, and strong anti-interference ability
The protection level of the electronic unit chassis shell is IP65, which can prevent water spray and dust intrusion
Equipped with RS232 or RS485 output interfaces, it can achieve digital output
Measurement pool material: Organic glass

Technical Indicators:
1. Measurement range: pH: (0.00~14.00) pH;
Resolution: 0.01pH
Temperature: (-10.0~120.0) ℃
Resolution: 0.1 ℃

2. Basic error of PHG-7685A industrial pH meter
PH: ± 0.05pH ± 1 word;
Temperature: ± 0.5 ℃± 1 word (0.0 ℃≤ T ≤ 60.0 ℃)
± 1.0 ℃ ± 1 word (in other ranges)
3. Stability of electronic unit: ± 0.02pH/24h
4. Temperature of the tested solution: (0-60) ℃
5. Flow rate of the tested water sample: (80-100) ml/min (adjustable)
6. Tested water sample pressure: 1.4 × 105Pa
7. Inlet connection of the tested water sample: stainless steel pipe or PVC hose with an outer diameter of Φ 6 × 1
8. Connection to the outlet of the tested water sample: stainless steel pipe or PVC hose with an outer diameter of Φ 10 × 1
9. Dimensions, mm: Electronic unit: 144 × 144 × 150
Measurement unit: 628 × 228 × 224
10. Hole size, mm: Electronic unit: 138 × 138 (see figure)
Measurement unit: 262 × 602
11. Weight: Electronic unit: 2kg
Measurement unit: 10kg