Conductivity Measurement in Green Hydrogen Production
Real-time monitoring to avoid contamination
Accurate Conductivity Measurement in High Purity Water
Conductivity measurement in green hydrogen production is challenging due to the measurement accuracy required in high purity water. The conductivity of the water supplied to the electrolysis stack must be carefully controlled to less than approximately 0.05 µS/cm to prevent damage to the stack. This high purity water is generated by passing DI water through a two-stage filter before it is collected in the oxygen separator tank. If the conductivity of the water being fed to the electrolysis stack is above the target threshold, it is routed to a recirculation filter for correction or blown-down. The Rosemount™ 400 Conductivity Sensor with 0.01 cell constant provides good accuracy in high purity water down to 0.01 µS/cm.
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Product Solutions
The Rosemount 400 Contacting Conductivity Sensor, with integral cable, accurately measures electrolytic conductivity in a broad range of applications from high purity water to clean cooling water. The Rosemount 400 conductivity sensor is ideal for use in clean, non-corrosive liquid having less than 20,000 µS/cm.
- Factory-measured cell constant ensures out-of-the-box accuracy and no initial calibration requirements
- Available in cell constants of 0.01, 0.1, and 1.0/cm
- Conductivity sensor designed for direct screw-in insertion into process piping using a front facing 3/4 inch MNPT fitting
Design
Cell constants: 0.01, 0.1, and 1.0/cm
Vacuum: At 1.6 in. Hg (5.2 kPa) air leakage is less than 0.005 SCFM (0.00014 m3/min)
Vacuum: At 1.6 in. Hg (5.2 kPa) air leakage is less than 0.005 SCFM (0.00014 m3/min)
Dimensions
Cable length (Model 400 only): 10 ft (3.1 m) standard; 50 ft (15.2 m) optional
Materials of Construction
Wetted Materials: Electrodes - titanium; Body - 316 stainless steel; Insulator - PEEK; O-Rings - EPDM
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.)
