Online Analyzer
AM-D-PH Digital pH Sensor
Digital online pH sensor for continuous monitoring in wastewater and process water, with Modbus output and a replaceable electrode.
- Model
- AM-D-PH
- Category
- Online Analyzer
- Outputs
- Modbus RTU, 4–20 mA
- Lead time
- 7 working days; a flow-through installation kit adds 3 working days
- MOQ
- 1 unit; 10 pcs for OEM branding
- OEM available
- Yes
Technical specifications
| Measuring range | 0–14 pH, resolution 0.01 pH |
|---|---|
| Accuracy | ±0.02 pH after calibration |
| Temperature compensation | Automatic, Pt1000 built into the electrode |
| Digital output | RS485 Modbus RTU, no separate transmitter required |
| Protection | IP68 sensor, waterproof cable |
| Electrode | Replaceable, glass bulb or flat-surface by model |
What it is not the answer for
Read this before asking for a price: one of these conditions is what turns a good meter into a bad installation.
- Media that foul the junction with oil, grease or heavy solids, unless an automatic cleaning system is fitted
- Strongly alkaline solutions above pH 12 for long periods, which shorten electrode life
- Non-aqueous solvents and media with very low conductivity
Maintenance and service life
Clean the glass bulb and the junction weekly in wastewater, and replace the electrode every 12–18 months. Calibrate with fresh pH 4.00 and 6.86 buffers, not with buffer that has been open for months: contaminated buffer is the most common reason a good sensor looks wrong.
Behind the instrument
How it is built and tested
Coil winding, the calibration bench, the plant floor — and an overseas customer's factory audit.
Applications
Where this model is used
Each application names a measuring point and the conditions that decide the selection.
WW-FL
Municipal Wastewater Inlet Flow Measurement
Inlet and outlet flow in raw sewage, where solids, gas entrainment and short straight runs defeat clean-liquid meters.
WW-IP
Industrial Process Measurement
Flow, level and water quality in chemical, food and pharmaceutical processes, where wetted materials and signal compatibility decide the choice.
Elsewhere in the range
Other models in Water Quality
The same category holds the models that solve the neighbouring problem, and the price difference is usually smaller than the cost of the wrong principle.
AM-CON
AM-CON Inductive Conductivity Sensor
Inductive conductivity sensor for aggressive, scaling or fouling liquids, with no electrodes in contact with the medium.
AM-IOT-ION
AM-IOT-ION Digital Ion Sensor
Digital ion-selective sensor for continuous ammonia nitrogen and other ion measurement, with a replaceable membrane and a refillable reference.
Measuring point does not match the table above?
Send the medium, the pipe size and the output your control system expects. We answer with the principle that fits, or with the reason none of ours does.