PH/ORP-6850 Controller FAQ: Specifications, Configuration Options and Ordering Questions
QUESTIONS & ANSWERS
Answers to buyer questions about the PH/ORP-6850 single-channel industrial online pH/ORP controller from Hebei JIRS Import & Export Co., Ltd.: measuring ranges, accuracy, outputs, power supply choices, optional features, panel installation and probe mounting. Pricing, lead time and warranty terms are not covered by the published product information and should be confirmed directly.

The PH/ORP-6850 is an industrial online controller from Hebei JIRS Import & Export Co., Ltd. It measures and controls the pH or ORP of water continuously. This FAQ covers the questions buyers, distributors and procurement teams usually need answered before they ask for a quote: what the controller measures, its published technical index, which options can be chosen at order, and how it is installed. Every answer comes from the published product information.
This is a single-channel instrument. It measures pH or ORP and controls that value continuously. According to the product information, applications include municipal wastewater treatment, chemistry, printing and dyeing, paper, medicine, plating and environmental production.
| Item | Published value |
|---|---|
| Measuring range | pH 0–14 pH; ORP −1200 to +1200 mV |
| Accuracy | ±0.02 pH; ±1 mV |
| Resolution | 0.01 pH; 1 mV (0.1 mV optional) |
| Stability | ≤0.02 pH/24 h; ≤3 mV/24 h |
| pH standard solutions | 4.00/6.86/9.18 (standard); 4.01/7.00/10.01 (optional) |
| Display | 128 × 64 dot matrix LCD, English language display |
| Temperature compensation | 0–120 ℃, manual/automatic, PT1000 RTD |
| Signal output | One isolated 4–20 mA output, max loop resistance 750 Ω |
| Alarm output | High and low limit alarm contacts (3A/250V AC), normally open relays |
| Power supply | AC220V ±10%, 50/60 Hz; AC110V ±10%, 50/60 Hz; DC24V, 0.5 A |
| Power consumption | ≤3 W |
| Working environment | 0–60 ℃; humidity ≤95% RH |
| Outline dimension | 96 × 96 × 127 mm (height × width × depth) |
| Panel cut-out | 93 × 93 mm (height × width) |
The unit offers high/low limit control with a double relay, a pH high/low limit alarm light and a settable alarm delay. The current output is isolated. Digital communication output is listed as optional, and the rear terminal chart includes RS485 A+ and B− terminals. PID control through the 4–20 mA output, used to drive a powered actuator, is also listed as optional.
Other published characteristics:
The controller is panel mounted. Insert it from the front panel into the 93 × 93 mm cut-out, fit the clamps on the left and right, and tighten them. When mounting the probe on a pipe, avoid air bubbles at the probe, because they make the readings inaccurate. The product documentation includes installation charts for this.
The published information does not cover pricing, minimum order quantity, lead time, warranty, certifications, or which probe is included as standard. Confirm these directly with Hebei JIRS Import & Export Co., Ltd. when requesting a PH/ORP-6850 quotation, along with the power supply version and optional functions you need.
The detailed questions and answers below cover specifications and configuration choices.
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THE COMPANY
Hebei JIRS Import & Export Co., Ltd., we specialize in providing top-notch water quality analysers and sensors that meet the diverse needs of our clients. Our products include: Conductivity/TDS controllers, Resistivity controllers, pH/ORP controllers, Reverse Osmosis (RO) controllers, Dissolved Oxygen Controllers, Residual Chlorine Controllers, Turbidity Controllers, Salinity Controllers, Irrigation system controller and a variety of related sensors.…
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