Customized Products

Silica Analyzer - Low Range Photometric Type

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Specifications
KEY FEATURES

Device Digox

602 silica

Measuring range

0.5 - 5000 ppb SiO2

Photometer

Precision photometer with temperature control of the sample

Accuracy

Max. { 2 % of reading or 2 ppb} within measuring range 0 - 100 ppb Max { 5 % of reading or 5 ppb} within measuring range > 100 ppb

Calibration

Three-point calibration is realised with the help of micro dosing pumps; deionised water via an integrated ionic exchanger for zero point and standard

Very low reagent consumption, one reagent set (approx. 3 liters) lasts for at least 5000 measurings or 8 weeks at the highest measurement frequency

Individually selectable sequence and measuring frequency for each channel. Time frame can be adjusted from the minimum measurement time up to a measuring interval of 96 hours

• Remote control by means of 6 external binary contacts possible (calibration commands, channel selection, channel hide, grab sample)

Product Description

The determination of dissolved silicic acid (ortho-silicate) in the water steam cycle is of great importance for the operation and plant safety in power plants. In addition to the determination of ortho-silicate in the live steam in order to avoid deposits or crystallization inside the turbine, it is possible to detect an aperture in the anion filter or mixed bed exchanger. The Digox 602 silica is constantly being developed and is in accordance with the physical-chemical measuring method of the new VGB guidelines S-006 for the quantitative detection of dissolved silicic acid. A photometric procedure with a detection limit of 0.5 ppb is used which is ideally suited for the determination of silicic acid in ultra pure power plant water.
Photometric
0.5 to 5000 ppb SiO2
Output Signal: 4-20mA
100-240 VAC 50/60 Hz, 70 VA
Short measuring sequence <15 min
Enclosure IP 65