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IP68 Digital pH Sensor with 1 inch NPT and Automatic Temperature Compensation Online pH Probe

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IP68 Digital pH Sensor with 1 inch NPT and Automatic Temperature Compensation Online pH Probe

Product Model : DPH790

Weight : About 200 g

Flow Rate : 0.001-0.5 m/s

MOQ : 1 Piece

Price : USD 100-200 / Piece

Packaging Details : Daruifuno branded color box

Installation : 1 inch NPT thread at both ends

Model Number : DPH790

Place of Origin : Suzhou, China

Accuracy : 0.1% FS or +/-0.02 pH (larger)

Shell Size : Phi 35 mm, total length 220 mm

Communication : RS485, Modbus RTU

Protection Grade : IP68

Working Temperature : 0-50 C

Power Supply : 12 VDC, about 0.2 W

Brand Name : Daruifuno

Measuring Principle : Glass electrode method

Product Name : IP68 PPS Digital pH Sensor

Cable : Standard 5 m, customizable

Supply Ability : 5000 Pieces per Month

Measuring Range : 0.00-14.00 pH; 0.0-50.0 C

Payment Terms : T/T

Delivery Time : 3 working days for stock, 10-20 days for bulk production

Temperature Compensation : Automatic

Working Pressure : <=4 Bar

Shell Material : PPS

Connection : M16

Certification : CE, ISO 9001

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Product Description

The DPH790 digital pH sensor is built for demanding online water quality work. Its durable PPS (polyphenylene sulfide) body and IP68 protection grade allow continuous immersion, making the sensor at home in pipes, tanks, open channels and flow cells. Measuring 0.00~14.00 pH across 0.0~50.0 ℃, it delivers accurate, temperature-compensated readings with automatic temperature compensation and no external transmitter needed.

Installation is intentionally simple. Thanks to 1″ NPT threads at both ends, the sensor can be threaded directly into a process line, a mounting bracket or a multi-parameter flow cell. The compact φ35 mm barrel is only 220 mm long and weighs about 200 g, and the standard 5 m cable (customizable) simplifies wiring to a controller or PLC.

As a digital electrode, the DPH790 outputs over RS485 Modbus RTU with power and communication electrically isolated inside the sensor, ensuring stable performance in electrically noisy plants. Calibration uses zero and slope points at 4.01, 6.86 and 9.18 pH, and the sensor supports solution compensation types for natural water, pure water or other media. Regular maintenance is straightforward: visual inspection and calibration checks monthly, and sensor or seal replacement as scheduled.

Technical Parameters
Parameter Specification
Product Model DPH790
Measuring Principle Glass electrode method
Measuring Range 0.00~14.00 pH; 0.0~50.0 ℃
Accuracy 0.1% FS or ±0.02 pH (take the larger)
Temperature Compensation Automatic
Working Temperature 0~50 ℃
Working Pressure ≤4 Bar
Flow Rate 0.001~0.5 m/s
Protection Grade IP68
Shell Material / Size PPS; φ35 mm, total length 220 mm
Installation Size 1″ NPT thread at both ends
Connection M16
Power Supply 12 VDC, about 0.2 W
Communication RS485, Modbus RTU
Weight / Cable About 200 g; standard 5 m cable (customizable)
Key Advantages
  1. IP68 fully sealed body: continuous immersion and wash-down protection for tanks, channels and pipes.
  2. Durable PPS housing: resists chemicals and corrosion for long service life in process water.
  3. 1″ NPT threads at both ends: quick, leak-tight mounting into lines, brackets and multi-parameter flow cells.
  4. Automatic temperature compensation: accurate readings from 0 to 50 ℃ without external accessories.
  5. Compact and light: φ35 mm × 220 mm, about 200 g, with a standard 5 m customizable cable.
  6. Digital isolation and Modbus: RS485 Modbus RTU output with internal power/communication isolation.
Applications
  • Sewage and wastewater treatment aeration and discharge
  • Drinking water and purified water treatment
  • Surface water and pollution source monitoring
  • Circulating water and cooling systems
  • Electroplating, PCB and printing & dyeing rinse water
  • Chemical, food and pharmaceutical process control
Frequently Asked Questions
Q1: Can the sensor be submerged continuously?

Yes — the IP68-rated PPS body is designed for continuous immersion.

Q2: How is it mounted?

It uses 1″ NPT threads at both ends, allowing direct installation into pipes, tanks or flow cells. Install within ±30° and never horizontally or upside down.

Q3: Does it need an external temperature sensor?

No, temperature compensation is automatic and internal.

Q4: What pressure and flow conditions are supported?

Working pressure up to 4 Bar and flow rates between 0.001 and 0.5 m/s.

Q5: How is it maintained?

Visual inspection and calibration check monthly, sensor replacement yearly and seal maintenance every two years, depending on conditions.

Contact Daruifuno for pricing, mounting accessories and flow-cell options for the DPH790 digital pH sensor.


Product Tags:

IP68 PPS pH Sensor Body

      

1 inch NPT Thread Mounting

      

Automatic Temperature Compensation

      
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