KDM-100 Online PH Meter – IP57
1. Introduction
This product is a new-generation intelligent water quality detector independently developed by our company. It features Chinese menu operation, high stability, excellent repeatability and multiple functions, and can accurately measure the pH value and temperature value in solutions. It is widely used for the online detection of pH values in solutions in fields such as environmental protection, sewage treatment, thermal power generation, aquaculture, food processing, printing, metallurgy, pharmacy, fermentation, chemical industry and tap water.
2.Features
- Waterproof,dustproof, moisture-proof (IP57), high-end design look.
- High precision,high stability and preferable antijamming ability.
- Large screen LCD display,support chinese menu(switching from each other). Multi-parameter simultaneous display.
- Automatic temperature compensation function,manual adjustment of PH and temperature value.
- Communicate function: RS-485 communication interface with photoelectric isolation (optional),convertible RS-232. The PH value corresponding 4-20mA current output can be arbitrarily set, And can control 4-20 mA positive and negative. It is widely used in automatic addition of reagent.And it also support to connect loT of company and customize loT for customer.
- Optional with the company’s host computer online acquisition software for data acquisition and processing.
- Note book: It can store 50 PH measurement datas ,users can record measurement data as needed.
- Automatic identification of standard solution and capable for factory reset.
- Watchdog function: make sure the meter doesn’t crash.
- Power off protects > 10 years.
Wiring
| 1.NO：Normal opening relay of upper limit | 9. INPUT: measuring electrode (white transparent wire) |
| 2.COM：relay’s common terminal of upper limit | 10. REF: reference electrode (black wire). |
| 3.NC：Normal closing of Upper limit | 11. TEMP： (other color wire) |
| 4.NO: Normal opening relay of lower limit | 12. TEMP： (other color wire) |
| 5.COM： relay’s common terminal of lower limit | 13. RS485 A |
| 6.NC: Normal closing of lower limit | 14. RS485 B |
| 7.L: 220V Live line(DC 24V+) | 15. 4-20mA+ |
| 8.N:220V Zero line(DC0V-) | 16. 4-20mA- |
Note: If need RS – 232 communication interface, please select the appropriate RS – 485 to RS-232 device. The RS-485 interface is compatible with MODBUS protocol. Please consult the manufacturer or dealer for details.
| Parameter | Specification |
|---|---|
| Measuring range | 0.00~14PH |
| Resolution | 0.01PH,1mV,0.1℃ |
| Accuracy | ±0.02PH, ±1mV, ±0.3℃ |
| Stability | ≤0.01 PH/ 24h |
| Standard liquid | 6.86/4.00/9.18, 7.00/4.00/10.01 |
| Temperature compensation | 0~99.9℃(PH) |
| PH calibration range | 0±1.45PH; slope ±30% |
| Control interface | two group of ON/OFF relay contacts are divided into upper and lower limit alarm control. |
| Signal isolation output | 4~20mA isolation protection output |
| Relay | the relay hysteresis is arbitrarily set, relay load 3A 220VAC |
| Working conditions | Ambient temperature is 0~60℃, relative humidity ≤90% |
| Input impedance | ≥1×1012Ω |
| Output load | <750Ω(4-20mA) |
| Working voltage | 220VAC ±10%, 50/60hz or DC24V and DC110V |
| Dimensions | 96×96×115 mm |
| Hole-cutting Size | 92×92mm |
| Weight | 0.9Kg |
| Protection level | IP65 |
