Wholesale High Temperature PH&ORP Sensor Manufacturer & Suppliers in Oman

Standard pH sensors fail at elevated temperatures due to three factors: rapid vaporization/boiling of the internal electrolyte, leaching of alkali ions from standard thin glass membranes, and precipitation of silver chloride (AgCl) at the junction due to temperature gradients. BOQU's high-temperature sensors employ a proprietary high-temperature glass formulation with minimal alkali errors, a pressurized polymerized solid gel reference, and an Ag/AgCl reference half-cell with a diffusion labyrinth that prevents thermal pumping and junction clogging.

In seawater reverse osmosis (SWRO) and thermal desalination (MSF/MED) plants, elevated chloride concentrations accelerate reference electrode contamination. Our sensors feature double-junction and annular porous PTFE diaphragms. The large junction surface prevents localized crystallization of salts, while the non-flowing reference system guarantees stable millivolt potential even under shifting hydraulic pressures up to 6 bar.

Yes. We offer both analog high-impedance mV outputs with standard coaxial cables (S8/VP8 connectors) that interface directly with standard pH transmitters, as well as digital models (e.g., IOT-485-pH) that integrate an embedded micro-transmitter outputting standard Modbus RTU over RS485. This enables direct hook-up to Siemens, ABB, or Rockwell PLCs without purchasing separate transmitter boxes.

Under continuous operation above 90°C, chemical reaction rates double for every 10°C increase. We recommend an initial bi-weekly calibration check using standard NIST pH 4.01 and 7.00 buffers during the first month of deployment. Once the drift profile is established in your specific chemical matrix, the interval can generally be relaxed to once every 30 to 45 days. The presence of automatic self-cleaning flush systems further extends this interval.

Yes. Shanghai BOQU Instrument operates direct factory manufacturing facilities in Kangqiao and Lingang. We support engineering distributors, panel builders, and large industrial facilities in Oman with wholesale tier pricing, neutral OEM packaging, customized cable lengths, private labeling, and priority sea/air freight to Muscat International Airport and Sohar Port.