pH Measurement in Sugar Refining
Get accurate & reliable pH measurement throughout the sugar refining process
pH Sensor Resists Coating for Accurate pH Measurement
Processed sugar is refined from raw sugar cane juice in a multi-step process. First, pH is used to control the addition of lime slurry to maintain a high pH level, necessary for neutralizing natural acids and precipitating dissolved organics. Next, pH is used to regulate the addition of carbon dioxide feed that removes calcium from the stream and prevents scaling downstream. Finally, pH is used to control the addition of sulfur dioxide, which in addition to acting as a biocide, lowers the pH in the purified juice to values necessary for crystallization of sugar. Solids from the lime slurry and precipitation steps can coat the pH sensor's reference junction and pH glass, causing erratic readings and a shorter sensor life. The Rosemount™ 396P pH sensor with shrouded tip or flat glass option resists the effects of coating to provide an accurate pH measurement. A retractable sensor is also available for easy cleaning and replacement.
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Product Solutions
The Rosemount 396 pH Sensor, with integral cable, 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
- Minimum sensor maintenance due to robust reference technology helps ensure steady pH signal when sensor is coated
- Maximum pH sensor life due to helical reference pathway which hinders reference poisoning
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 396R pH Sensor / ORP Sensor, with integral cable, is specifically designed for improved life in harsh, dirty applications where a separate sample stream is difficult to provide and greater insertion depths are required. This pH/ORP sensor is designed for use with a 1-1/4 in. or 1-1/2 in. ball valve for tap installation.
- Minimum maintenance due to robust reference technology helps ensure a steady signal when pH sensor / ORP sensor is coated
- Retractable design for use with ball valve assemblies
- Versatile mounting options feature either a 21" or 3" titanium tube sensor length
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)
Max Operating Pressure
(at retraction or insertion)
21 in. tube 64 psig (4.41 barg)
36 in. tube 35 psig (2.41 barg)
21 in. tube 64 psig (4.41 barg)
36 in. tube 35 psig (2.41 barg)
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)
