pH Measurement in Corn Processing
Get better control of product quality to maximize product yield
Accurate pH Measurement with Resistance to Coating & Plugging
Corn wet milling is one of the most common methods used to process corn. pH measurements are made throughout the wet milling and starch conversion processes to control product quality, maximize product yield and minimize water consumption. The bulk of the water used for rinsing and washing usually needs pH adjustment to prevent altering the nominally acidic pH present during the various steps. pH measurements throughout the process can be challenging as corn solutions tend to plug the sensor reference junction, and high concentrations of non-conductive sugars and starches can diffuse through the reference junction and poison the sensor. The Rosemount™ 396P pH/ORP Sensor is a reliable solution in wet corn milling applications. The pH sensor's large area helical reference junction design resists coating and plugging while also providing sufficient protection of the reference electrode against being poisoned by the sugars and starches.
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Product Solutions
The Rosemount 396P pH Sensor/ORP Sensor, with integral cable, is specifically designed for improved life in harsh, dirty, and abrasive applications such as lime slurry waste treatment, paper machine headbox and pigment/dye applications, where large quantities of suspended solids are present. The pH/ORP sensor features a coating resistant TUpH large area reference junction and a rugged polypropylene body construction for maximum chemical resistance.
- Minimum pH/ORP sensor maintenance due to TUpH reference technology which ensures steady pH signal when sensor is coated
- Maximum pH/ORP sensor life due to helical reference pathway which hinders reference poisoning and cracking resistant glass
- SMART enabled for pH measurements
Measurement Range
pH sensor: 0 to 14ORP sensor: -1500 to 1500 mV
Operating Pressure
Hemi-bulb: 0 to 150 psig (0 to 10.34 barg)Flat-bulb: 0 to 100 psig (0 to 6.89 barg)
Operating Temperature
32 - 212 °F (0 -100 °C)
The Rosemount 396VP pH Sensor is ideal for pH measurement in harsh, dirty and abrasive applications with large quantities of suspended solids. A robust sensor design and robust reference technology allow for reliable pH measurements in a wide range of the toughest applications.
- SMART enabled to eliminate field calibration
- Quick cable-to-sensor release, provided by the watertight VP8 connector, eliminates cable twisting
- Minimum sensor maintenance due to robust reference technology helps ensure steady pH signal when sensor is coated
Weight
0.45 kg/0.9 kg (1 lb/2 lb)
Ambient Temperature
0-100 °C (32-212 °F)
Dimensions
15 ft coaxial with BNC
The Rosemount 389 pH Sensor / ORP Sensor, with integral cable, is housed in a molded Tefzel™ body with Viton™ o-rings, making each sensor virtually indestructible and chemically resistant. Complete encapsulation eliminates leakage or high humidity problems traditionally found in other pH/ORP sensor designs. The simplified construction, designed with user convenience in mind, does not require electrolyte (KCl) replenishment or any high maintenance troubleshooting procedures.
- Triple junction reference prolongs pH sensor / ORP sensor life and protects against poisoning ions such as ammonia, chlorine, cyanides, and sulfides
- Enhanced performance and increased life with cracking resistant glass
- Available with a glass electrode option for high pH applications
Temperature Range
32 - 182 °F (0 - 85 °C)
Max. Operating Pressure
100 psig (790 kPa) at 150 °F (65 °C)
Materials of Construction
pH sensor body: Tefzel™pH electrode: glassORP electrode: platinumJunction: ceramicO-Ring: Viton™
The Rosemount 1058 Dual Channel Transmitter provides confident liquid analysis measurement in a wide range of industrial, municipal and commercial applications. It is a 4-wire powered device that provides multi-parameter liquid analysis for digital and analog sensors, including inputs from pH/ORP sensors, ISE, flow, current, conductivity sensors (contacting and toroidal), turbidity sensors and amperometric sensors (dissolved oxygen, chlorine and ozone).
- Supports continuous measurement of liquid analysis inputs from one or two sensors.
- Each sensor channel is independently configurable to support a wide selection of digital or analog liquid analysis sensors including pH sensors, ORP sensors, conductivity sensors, dissolved oxygen sensors, chlorine senors, turbidity sensors and more.
- IP66 / Type 4X rated engineered polymer enclosure with universal mounting options provides confident and easy installation indoors or outdoors.
Enclosure Rating
Type 4X, IP66
Dimensions
Overall 160 x 157 x 140 mm (6.3 x 6.2 x 5.5 in); Cutout 138.4 x 138.4 mm (5.45 x 5.45 in)
Weight
3 lb (1.5 kg)
The Rosemount 1056 Transmitter offers single or dual sensor input with an unrestricted choice of dual measurements, reducing the cost per loop and saving panel space. This multi-parameter liquid analysis transmitter offers a wide range of measurement choices, including differential conductivity, dual oxygen and many other combinations supporting most industrial, commercial and municipal applications. The modular design of the transmitter allows signal input boards to be field replaced making configuration changes easy.
- Fast and easy installation using Quick Start programming, auto-recognition of sensor boards and modular design
- Large customizable display provides at-a-glance view of pertinent information
- Visibility of process parameters by utilizing HART® or Profibus DP digital communications
Enclosure Rating
Polycarbonate. Type 4X, IP65.
Certifications/Approvals
FM/CSA/UL (See Product Data Sheet for complete list of certifications.)
Dimensions
Overall 155 x 155 x 131mm (6.10 x 6.10 x 5.15 in.). Cutout: 1/2 DIN 139mm x 139mm (5.45 x 5.45 in.)
