Chengdu Ruichi Analytical Control Instrument Co., Ltd
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PHG6630 economical online pH meter
Type: PH Meter Model: PHG6630 Display Method: LED Digital Accuracy: 0.05PH Brand: Chengdu Ruichi
Product details
Product description
PHG6630/PHG6640 economical model simplifies functions while ensuring performance, thus having high performance. Clear display, easy operation, and excellent testing performance make it highly cost-effective. It can be widely used for continuous monitoring of pH values in solutions such as thermal power, chemical fertilizers, metallurgy, environmental protection, pharmaceuticals, biochemistry, food, and tap water. The only difference between PHG6630 and PHG6640 is the power supply.
technical reference

technical indicators
display mode
LED (digital tube) display, high brightness, eye-catching and intuitive, with a long visible distance
measurement range: 0~14.00pH,-1000~+1000mV,0~99.9℃
Temperature compensation rangeAutomatic 0-99.9 ℃, manual 0-99.9 ℃
25 ℃ conversionPure water and ammonia added ultrapure water converted to 25 ℃
resolution: 0.01pH,0.1mV,0.1℃
Accuracy: ±0.05pH,±1mV,±0.3℃
input impedance: >1012Ω
Current isolation output4-20 mA (load<750 Ω).
Alarm Relay:AC220V/3A, Alarm isolation output.
communication interfaceIsolate RS485.
Power supply: pHG6630: AC220V, 50Hz±1Hz
pHG6640: DC24V
Protection level:IP65
working conditions: Environmental temperature 0-60 ℃, relative humidity ≤ 90 ℅
Power off storage:>10 years
Weight and size0.8kg, 96 × 96 × 110 mm
cutout size:92x92mm;
Installation method of secondary meter: Open hole type
Electrode installation method
Flow type/sinking type/flange type/pipeline type
Standard Configuration
One secondary meter, one set of measuring cells, and one electrode,
One packet each of pH (4, 7, 9) standard buffer solutions.

Ordering Guide
1. Are the matched electrodes two composite or three composite;
2. The length of the electrode cable is not specified and should be arranged at 5m;
3. Installation method of electrodes.
The difference between the two is the power supply.

Main Features
Microcomputer based:By using high-performance CPU chips, high-precision AD conversion technology, and SMT surface mount technology, multi parameter measurement, temperature compensation, automatic range conversion, and instrument self-test are completed with high accuracy and good repeatability.
High reliability:There are no complex function switches or adjustment knobs.
Strong anti-interference ability:The current output and alarm relay adopt photoelectric coupling isolation technology, which has strong anti-interference ability and achieves remote transmission.
Automatic alarm function:Alarm signal isolation output, alarm upper and lower limits can be set arbitrarily, alarm hysteresis cancellation.
Industrial control watchdog: ensures instruments do not crash
Network function:Isolated current output and RS485 communication interface; The upper and lower limits of the output corresponding to the pH value of the current can be set arbitrarily.
Automatic conversion of pH value of standard solution:The temperature curve of the standard solution is pre stored, and the pH value of the standard solution at the set temperature is automatically calculated during calibration.
Automatic error detection calibration:If the user mistakenly uses standard buffer during calibration, the instrument will automatically prompt.




Pure water, sewage, two or three composite electrodes can be selected according to different occasions; Adopting flow type, sinking type, flange type, pipeline type or side wall installation

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