PHD-99S Two-wire Intelligent pH/ORP Transmitter
□Typical Applications
It 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,and environmental protection.
□Product Features
◎Two-wire intelligent instrument, powered by 24VDC;
◎Calibration and parameter settings are performed using two buttons, making it simple and convenient to check the electrode’s performance parameters;
◎Backlit LCD displays pH (mV), temperature, and output percentage simultaneously;
◎Manual/automatic temperature compensation; Pt100/Pt1000 temperature sensors can be switched on-site through settings;
◎Cast aluminum housing, providing greater durability and better interference resistance;
◎In explosion-proof environments, a magnetic rod can be used to operate from outside the housing, ensuring safety and reliability;
◎Optional intrinsically safe design version of the circuit board for enhanced safety and reliability;
◎ HART 7.5 communication protocol is available, with a DD device description file.
□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）/24h
5）Temperature Input: Pt1000,Pt100，PTC10k
6）Temperature Measurement Range: -30～130℃
7）Temperature Resolution: 0.1℃
8）Temperature Measurement Accuracy: ±0.25℃
9）Analog Output：4 ~ 20mA, loop load 500Ω; HART protocol optional
10) Ambient Temperature: -20 ～ 60℃ Ambient Humidity: 5% ～ 90%, non-condensing
11) Protection Grade: IP66
12) Power Supply: 24VDC
13) Transmitter Dimensions: 126×160×168mm
14) Weight: Transmitter 1.6kg, Tube mounting bracket 0.7kg
15) Explosion-proof grade: Explosion-proof ExdbIICT6Gb CE23.3206; Intrinsically safe
ExiaIICT6Ga CE23.4309X
