pHG-3081 Online pH Meter
**Model NO.:** PHG-3081
**Trademark:** BOQU
**Origin:** Shanghai, China
**HS Code:** 90278099
The PHG-3081 is an advanced industrial pH meter designed for continuous online monitoring in various environments. It features a microprocessor-based system with an English display and menu-driven operation, making it highly intelligent, multi-functional, and suitable for demanding applications. This instrument integrates the sensor and the meter into one unit, offering flexibility with options for three-in-one or two-in-one electrodes to adapt to different installation requirements.
It is widely used in industries such as thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceuticals, biochemistry, food processing, and water treatment. The device provides accurate and reliable pH measurements under a range of conditions.
**Key Features:**
- **Modern Design:** Aluminum casing with a metallic texture for durability and aesthetics.
- **Intelligent Operation:** Utilizes high-precision AD conversion and microcomputer technology for pH and temperature measurement, along with automatic temperature compensation and self-checking.
- **High Reliability:** All components are mounted on a single circuit board, eliminating the need for complicated switches or adjustment knobs.
- **Dual High-Impedance Input:** Offers impedance up to 1×10¹² Ω, ensuring strong interference resistance.
- **Solution Grounding:** Reduces ground loop disturbances for more stable readings.
- **Isolated Current Output:** Uses optoelectronic isolation technology for long-distance transmission and improved immunity to interference.
- **Communication Interface:** Easily connects to a computer for monitoring and data exchange via RS485 or RS232 (optional).
- **Automatic Temperature Compensation:** Operates within 0–99.9°C for accurate pH readings.
- **IP54 Protection:** Waterproof and dustproof design suitable for outdoor use.
- **User-Friendly Interface:** Menu-driven operation similar to a computer, allowing easy navigation without manual guidance.
- **Multi-Parameter Display:** Shows pH, mV values, temperature, time, and status simultaneously on the screen.
**Technical Specifications:**
1. **Measuring Range:** pH: 0–14.00 (0.01 pH), mV: ±1999.9 mV (0.1 mV), Temperature: 0–99.9°C (0.1°C)
2. **Automatic Temperature Compensation:** 0–99.9°C (reference at 25°C; optional up to 150°C)
3. **Water Sample Tested:** 0–99.9°C, 0.6 MPa
4. **Temperature Compensation Error:** ±0.03 pH
5. **Repeatability Error:** ±0.02 pH
6. **Stability:** ±0.02 pH/24h
7. **Input Impedance:** ≥1×10¹² Ω
8. **Clock Accuracy:** ±1 minute/month
9. **Isolated Current Output:** 0–10 mA (load <1.5 kΩ), 4–20 mA (load <750 Ω)
10. **Output Current Error:** ≤±1% FS
11. **Data Storage Capacity:** 1 month (1 point/5 minutes)
12. **Alarm Relays:** AC 220V, 3A
13. **Communication Interface:** RS485 or RS232 (optional)
14. **Power Supply:** AC 220V±22V, 50Hz±1Hz; 24VDC (optional)
15. **Protection Grade:** IP54, suitable for outdoor use
16. **Dimensions:** 146 (L) × 146 (W) × 150 (D) mm; Panel cut-out: 138 × 138 mm
17. **Weight:** 1.5 kg
18. **Working Conditions:** Ambient temperature: 0–60°C, humidity <85%
19. **Electrode Options:** 3-in-1 or 2-in-1 electrode configurations available
This robust and user-friendly pH meter is ideal for continuous monitoring in industrial settings, offering precision, reliability, and ease of use.
Ultra Low Temperature Infrared Pyrometer
This classification includes one color infrared pyrometers measuring range is 0℃-1000℃. The one color pyrometers currently on market are mostly narrow-band pyrometers. Its principle of temperature measurement is to determine the temperature by detecting the radiant energy that occurs in a narrow wavelength range (8-14μm for 0-1000C pyrometer) of an object. The temperature a pyrometer measured is the average temperature in an area, and the measuring result is affected by emissivity, lens contamination and background radiation.
To use 1-color pyrometer mode, the measured area of the object should be large (it can fully fill the target field of view) , object surface should be relatively flat (not curved), measurement direction should less than 30 degrees, and the physical and chemical state of the measured object surface should be stable (not in the process of oxidation, gasification or liquefaction) , the optical channel should with less dust and without blocking and attenuation.
Main applications include: inductioin heating,heat treatment,Galvanized wire ,also suitable for temperature measurement in a good environment. Products in this catalog are usually applied to metallurgical industry(rod and wire mills.Hot rolling mills), foundry, cement kiln, induction heating, heat treatment, heating furnace, vacuum furnace, monocrystalline silicon, polysilicon, semiconductor and other industrial temperature measurement.1000C infrared pyrometer, compact infrared pyrometer, small online infrared pyrometer
Changzhou Sijie Optoelectronics Technology Co.,Ltd. , https://www.sjinfrared.com