Typical Applications:
The PHS-8B series intelligent industrial pH transmitter is an improved and refined intelligent online analytical instrument developed by our company (Dongrun) based on years of experience in pH meter research and production. It can be connected to high-impedance analog signal pH/ORP electrodes from various domestic and international manufacturers, and is used for online monitoring of pH/ORP in industries such as chemicals, petroleum, petrochemicals, rubber, papermaking, brewing, sugar production, food, mining, metallurgy, steel, power generation, pharmaceuticals, water treatment, environmental protection, and agriculture.
Product environmental certification number for the PHS-8000 model: CCAEPI-EP-2023-232
Product Features:
◎ Traditional electrode high-impedance analog signal input.
◎ 16-bit high-precision AD conversion and low-power microprocessor technology.
◎ Full Chinese menu for convenient operation, easy to learn; multi-level password
protection ensures reliable and secure measurement data.
◎ Automatic recognition and calibration of pH standard solutions, with optional
automatic/manual temperature compensation.
◎ High-resolution dot matrix LCD, capable of simultaneously showing pH value,
mV value, temperature, date, electrode slope, zero point, output current, and other information.
◎ Isolation between power supply, measurement, and output circuits, providing strong
anti-interference capability.
Technical Specifications:
1）Measurement Range: pH: 0~14pH ORP:- 1999~+1999mV
2）Instrument Resolution: 0.01pH(±0.1mV)
3）Measurement Accuracy: ±0.02pH（±1.2mV）
4）Instrument Stability: ±0.02pH（±1.2mV）5）Temperature Input: Pt1000, Pt100
6）Temperature Measurement Range: -30～130℃
7）Temperature Resolution: 0.1℃
8）Temperature Measurement Accuracy: ±0.2℃
9）Analog Output: optional 2-way 4 ~ 20mA, loop load 500Ω
10）Digital Communication: RS485 standard Modbus RTU protocol, HART protocol optional
11）Relay Output: optional 2-channel alarm relay and a cleaning relay (250VAC, 10A)
12）Display: 240 × 160 graphic dot matrix LCD with LED backlight can be operated under
direct sunlight
13）Ambient Temperature: -20 ~ 60℃; Humidity: 5% ~ 90%, non-condensing
14）Protection Grade: IP65
15）Power Supply: 220VAC\50Hz\15W standard; 24VDC±10%\2.5W (optional)
16）Installation: Wall-mounted
17）Transmitter Dimensions: 185 × 234 × 118mm (H × W × D)
18）Weight: 1.5kg (standard)
Overall Dimensions:
Product Installation
The instrument is recommended to be installed in a column type with a protective box, but
wall-mounted or guardrail installation options are also available.
When ordering, please specify the installation method and whether accessories such as a
protective box, column, mounting plate, or light shield are needed.
The instrument can be installed on a 35mm standard rail; it can also be fixed using the back
mounting holes or by utilizing the two pass-through holes in the junction box with screws.
