Quick and automatic measurement for boiler water, and trace amount of silica present in pure water.

Management of silica (SiO2) is paramount in preventing the formation of scales. This is because scales present in turbines will reduce the efficiency of power generation, especially for thermal power plants and nuclear power plants. By combining HORIBA's many years of track records and technological know-how, the silica analyzer has been reborn with conventional stability, reliability and maintainability.

Division: Process Water
Manufacturing Company: HORIBA Advanced Techno Co., Ltd.
  • ±2% F.S. repeatability with measurement time of 5 minutes
    Capable of obtaining high-speed, and highly repeatable measurement results.
  • Wide measurement range
    Measurement is possible from high sensitivity range of 0 to 10μg/L (ppb) to high concentration range of 0 to 5.0mg/L (ppm).
  • Self-diagnosis function
    Self-diagnosis of operation abnormalities such as water sample or reagent supply error, calibration error, light source error, and in-cell temperature error.
  • Automatic calibration function
    Zero calibration is performed automatically for each measurement. Span calibration can also be preset to perform at specific timings.
  • Automatic switching of measuring cycle
    Switching of measuring cycle automatically saves energy and reagents because measuring cycle is automatically shortened when the sample concentration exceeds the set concentration level, and automatically lengthened when the sample concentration goes below the set level.
  • Improved operability
    Equipped with color LCD touch panel.
Dimensions600 (W) mm × 750 (H) mm × 1600 (D) mm
MassApproximately 130 kg
Power supply100 V AC ±10%, 50/60 Hz
(Option) 110 V AC/115 V AC/120 V AC/220 V AC/230 V AC/240 V AC/
240 V AC±10%, 50/60 Hz
Approximately 500 VA
  • 0 μg/L to 10 μg/L/0 μg/L to 100 μg/L
  • 0 μg/L to 50 μg/L/0 μg/L to 500 μg/L
  • 0 μg/L to 100 μg/L/0 μg/L to 1000 μg/L
  • 0 μg/L to 200 μg/L/0 μg/L to 2000 μg/L
  • 0 mg/L to 0.50 mg/L/0 mg/L to 5.00 mg/L
    (Either is specified when receiving the order)
(Unit setting: μg/L)
0.1 μg/LData<100 μg/L
1 μg/L100 μg/L≦Data≦5000 μg/L
(Unit setting: mg/L)
0.0001 mg/LData<0.1 mg/L
0.001 mg/L0.1 mg/L≦Data≦5.0 mg/L
Repeatability±2% of the full scale
Molybdenum blue method
Number of
1 point to 4 points (specified when receiving the order)
Measurement time5 minutes
Measurement cycleSpecified as desired between 5 minutes and 999 minutes
CalibrationZeroEach measurement
SpanEqualizing filter method
replacement cycle
Once a week (reagent storage: 30℃ or below)
0℃ to 45℃
Ambient humidityRelative humidity 85% or less (no condensation)
  • Indoor installation type
  • Transient overvoltage of main power supply: Overvoltage Category II
    (EN61010-1), Pollution Degree 2
  • Flat surface that is not subject to vibration and external shock
  • No dust, mist, or corrosive gas is present in the atmosphere
  • Under atmospheric pressure
  • No direct sunlight
  • Well-ventilated area
Sample conditionsTemperature2℃ to 40℃ (36°F to 104°F)
Flow rate0.5 L/min to 1.0 L/min
Pressure0.02 MPa to 0.20 MPa
pH value11.0 or less
Coexisting phosphate
ion concentration
20 mg/L or less
However, no phosphate ions are permissible for the 0 μg/L to 10 μg/L/
0 μg/L to 100 μg/L range (ultrapure water specification)
Analog outputConcentration output
4 mA DC to 20 mA DC or 0 mA DC to 16 mA DC, selection setting in the operation section
Marker/hold output, selection setting in the operation section
Maximum load of 500 Ω or less, input/output isolation type, nonisolated between channels
Option: 0 V DC to 1 V DC, 1 V DC to 5 V DC
Contact outputStandarda-contact output (b-contact can be specified when receiving the order)
Contact rating250 V 3 A AC, 30 V 3 A DC
Measurement line
Meas., Standby, Maintenance, External control,
Sync. Signal, Equipment Err., Power, etc.
Measurement line
Line, Sample Lack, Abnormal concentration,
Contact inputNo-voltage a-contact input (open collector is available)
Isolated input: Common to the (-) side
ON resistance100 Ω (max.)
Open-circuit voltage26 V DC (max.)
Short-circuit current13 mA DC (max.)
Measurement line
Meas. Start, Cal. Start
Measurement line
DisplayColor touch panel type liquid crystal
Memory functionMeasurement valueMemory for over 1 year
Alarm history500 events
Calibration history100 events
Operation history100 events
USB external memory device can be used
OptionFilter for sample line
(For Line 1 to Line 4)

By installing about 5 μm cartridge filter in the upstream of the overflow tank, it is possible to prevent iron rust, etc. from entering the equipment.

  • Up to 2 filters can be built into the product.
  • If the optional filter is selected for the product of 3 or 4 measurement
    points, the filter is not built into the product but is delivered individually as a single filter.
  • If a step-down transformer is installed (power supply voltage is other
    than 100 V AC), a filter cannot be built into the product.
Flowmeter for sample
(For Line 1 to Line 4)
By adding this, you can accurately measure the sample supply flow rate.
  • When installing the analyzer, give careful consideration to its special characteristics and be sure to provide an environment where the equipment can operate properly.
  • Take appropriate action so that no damage will occur even when the equipment no longer operates correctly due to deterioration or the operational conditions of the equipment, or any unexpected phenomenon.

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