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United States

現場安裝型光學溶氧計(DO計)

HD-200FL

光學感測器提高了維護的便利性。

非常適合廢水處理廠和工業廢水處理設施等設施中曝氣池的管理。光學感測器無需擔心電解質更換或膜破損。該系統還提供進一步增強的功能,例如更換感測器蓋時自動識別膜特定係數特性。

產品分類: Process Water
製造商: HORIBA Advanced Techno Co., Ltd.

IC built-in memory sensor cap

Automatic recognition of membrane-specific coefficients eliminates the need to input them when replacing the sensor caps (fluorescent film).

Possible to be combined with a float-type holder

Self-cleaning action uses flow velocity of measured liquid preventing accumulated contamination.  The shape of the sensor prevents dirt and floc from clinging to the sensor part.

Possible to be combined with ultrasonic cleaners

Can be combined with an ultrasonic cleaner, which is effective for use in aeration tanks.  Furthermore, since the sensor is designed to be dropped into the holder, it offers ease of maintenance.

Strengths of the sensor

The sensor offers a longer lifespan compared to other measurement methods. Moreover, with an optical sensor, there are no concerns about membrane damage, and the membrane can be easily replaced by exchanging the entire cap. Three cleaning methods are available (water jet, air jet, and ultrasonic).

Indication converter specifications

ModelHD-200FL
Measuring methodOptical (fluorescent)
Measuring rangeDO: 0 to 20 mg/L      Resolution: 0.01 mg/L
Saturation: 0 to 200%    Resolution: 0.1%
Temperature: 0 to 50°C   Resolution: 0.1°C
RepeatabilityWithin ± 1% of full scale
LinearityWithin ±2% of full scale
Transmission
output
2 points 4 mA to 20 mA DC output isolated type Maximum load resistance 900 Ω
 Range 1: DO concentration: Freely selectable within the measurement range
 Range 2: Temperature: Freely selectable within the range from -10.0 to 110.0°C
 Alarm: Burnout function (3.8 mA or 21 mA)
 Hold: Selectable from previous value hold, optional value hold
Contact
output
3 points Dry contact output Relay contact, SPDT (1c)
 Signal R1, R2: upper limit alarm, lower limit alarm,
        hold, Cleaning (selectable)
      FAIL : Alarm
 Control operation Control width: 0.02 to 4.00 mg/L (±0.01 to ±2.00 mg/L)
On cleaning
output
1 point Wet contact output (connecting power supply voltage output) Relay contact, SPST (1a)
 Contact function: Solenoid Valve Control
External input1 point Contact shape: Open connector dry ‘a’ contact
 Contact function: Cleaning Unit Control
Communication functionRS-485 2-line, insulated input/output (transmission output is not insulated)
Temperature
compensation range
0 to 50°C
Temperature
compensation device
Thermistor
Calibration methodAtmosphere span calibration, zero liquid (sodium sulfite) calibration, span liquid (atmosphere saturation liquid) calibration
Self-diagnosis functionCalibration error, sensor diagnosis error, converter alarm
Operating temperature range-20 to 55°C (Should not be frozen)
Power supply90 to 264 V AC 50/60 Hz Power consumption: 15 VA (max)
StructureIP65 : 50 A pole or wall mounting
Case: Aluminum alloy Mounting brackets, hood: SUS304
MassMain unit body: Approx. 3.5 kg   Hood, mounting brackets: Approx. 1 kg
Regulatory complianceCE marking, FCC
Compatible sensorDO-2000
scrollable

*1     When extending the sensor cable, transmission cable, or contact input cable 30 m or more, the CE marking EMC directive surge test does not apply.
*2     An arrestor (inception voltage: 400 V) is mounted on the unit for transmission output, contact input, and communications. However, an optimal surge absorber should be installed on the connecting line depending on the surrounding environment, equipment setup, externally connected devices, etc.

Probe specifications

ModelDO-2000
Measurement principlesOptics (fluorescence)
Sample water0 to 50°C
Wetted materialSUS316、NBR、PVC
Response time90% response: Within 30 s  95% response: Within 60 s
MassApprox. 3.0 kg (incl. 10 m cable)
scrollable

Sensor cap specifications (replaceable)

Model5700
Wetted materialNBR, PMMA
MassApprox. 5.0 g
Membrane memoryBuilt-in memory in the membrane unit, automatic recognition
scrollable

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