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PH7685 PH/ORP Monitor With 2+1 Isolated Relays - Ideal for PLC/DCS Integration in Chemical Plants

PH7685 PH/ORP Monitor With 2+1 Isolated Relays - Ideal for PLC/DCS Integration in Chemical Plants thumbnail-1
PH7685 PH/ORP Monitor With 2+1 Isolated Relays - Ideal for PLC/DCS Integration in Chemical Plants photo-1
Negotiable MOQ: 100 Pieces (Price negotiable depending on order volume and customization)
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Specification:
96*96*95mm (including 104mm panel)
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Shanghai CAMP Environmental Protection Technology Co., Ltd.
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1Yr
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After-sales Service Support
Transport Package Export packaging
Specification 96*96*95mm (including 104mm panel)
Origin China

  • Product Series: AMP pH/ORP Analyzer

  • Display: High-brightness LED nixie tube display (clear readability for long-distance observation)

  • Input Ranges:

    • pH: 0.00～14.00pH, accuracy ±0.01pH

    • ORP: -1000～+1000mV, accuracy ±1mV

    • Software Filtering: Achieves 90% full-scale filtering with variable limits of 0.4～20.0s

  • Temperature Performance:

    • Measurement & Compensation Range: -10～+110℃

    • Zero Adjustment Range: ±2℃

    • Zero Point Range: 0.0～10.0% of full scale

    • Sensitivity/Slope: 80.0～120.0% adjustable

  • Outputs:

    • Relays A/B: 2 SPDT relays, 5A 220Vac (passive contacts), support upper/lower limit control, delay time 0.0～99.9s, hysteresis function

    • Alarm Relay: 1 SPDT relay, 5A 220Vac (passive contacts), with hysteresis, delay 0-99.9s, and upper/lower limit control

    • Auto-Clean Relay: Supports fully automatic, auto+manual control modes

    • Analog Current: 0-20mA/4-20mA (isolated), response time 2.5s to reach 98%

    • Digital (Optional): RS232

    • Second Current Output (Optional): Identical function to the first channel

    • Relays:

  • PH7685.jpg

  • Power Supply: 110/220Vac ±10%, 50/60Hz (other power options available), power consumption 5VA

  • Isolation: Input to output 4kV, compliant with IEC348; isolation voltage

  • Physical Specifications:

    • Housing Material: Cast aluminum

    • Dimensions: 96×96×155mm

    • Protection Class: IP54 (housing); IP65 (with BC931.2 protective enclosure, engineering plastic with large transparent front panel, 270×180×238mm)

    • Electrical Connection: Pluggable terminal block

    • Weight: 850g

    • Installation: Panel-mounted, 92×92mm cutout

  • Operating Environment: Temperature -2～50℃, humidity

  • CL7685 现场图.jpg

Core Advantages

  • Ultra-Precision Measurement & Filtering: Boasts 0.01pH pH resolution and 1mV ORP resolution, paired with software filtering (0.4～20.0s variable limits) to eliminate interference, ensuring data stability in complex environments.

  • Wide-Range Temperature Adaptability: Covers -10～+110℃ for measurement and compensation, with adjustable zero point and sensitivity (80.0～120.0%), maintaining accuracy under extreme temperature fluctuations.

  • Multi-Output & Intelligent Control: Features isolated 4-20mA current output, optional RS232 digital output, and multi-channel relays (with delay/hysteresis functions). The auto-clean relay reduces manual maintenance workload.

  • Robust & Versatile Design: Cast aluminum housing (IP54) and optional IP65 protective enclosure suit harsh industrial environments. Broad power supply compatibility (110/220Vac ±10%) and pluggable terminals enable easy integration.

  • Fast Response & Safety Isolation: Achieves 98% response in 2.5s for current output; 4kV input-output isolation meets IEC348 standards, ensuring operational safety.

  • CL7685现场实例

Application Scenarios

  • Heavy Industry Water Treatment: Ideal for steel, chemical, and mining industries to monitor pH/ORP of process water and wastewater. Multi-relay control (with delay/hysteresis) triggers dosing or cleaning systems, ensuring compliance with strict discharge regulations.

  • Extreme Environment Monitoring: Suitable for outdoor or high-temperature/pressure scenarios (e.g., geothermal water monitoring, industrial cooling systems) with -10～+110℃ temperature compensation and IP65 protection.

  • Pharmaceutical & Biotechnology: Used in pharmaceutical synthesis and bioreactor processes for precise pH/ORP control. RS232 digital output enables seamless connection to SCADA systems for data logging and remote control.

  • Food & Beverage Quality Control: Applied in brewing, dairy, and canned food production. Auto-clean relay maintains electrode performance, while high precision ensures product consistency and safety.


Product Tags: PH7685 pH/ORP Analyzer , Isolated Output pH/ORP Transmitter , Auto Temp Compensation pH/ORP Monitor

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Shanghai CAMP Environmental Protection Technology Co., Ltd.
Platinum Verified Supplier
1Yr
Verified Business License
Business Type
Agent
Year Established
2015
Main Markets
North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, Domestic Market
Location
Shanghai, China
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