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〈Catalog〉Industrial Optical Dissolved Oxygen Meter HD-200FL
Indication converter specifications
| Model | HD-200FL |
|---|---|
| Measuring method | Optical (fluorescent) |
| Measuring range | DO: 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 |
| Transmission output | 2 points 4 mA to 20 mA DC input/output isolated type Maximum load resistance 900 Ω Output 1: Dissolved oxygen concentration: Selection from preset ranges or free range input within measuring range. Output 2: Temperature: Free setting within a range between -10 and 110°C Occasional out for error: Hold or burnout to either 3.8 mA or 21 mA Transmission hold: In the maintenance mode, transmission signal is held at the latest value or preset value. In the calibration mode, transmission signal can be alive or held. |
| Contact output | 3 points No-voltage contact output Relay contact, SPDT (1c) Signal R1, R2: Selectable from upper limit alarm, lower limit alarm, ON/OFF control, currently holding of transmission output, and cleaning output.(The contact is closed during alarm operation, opened normally and while the power is down.) FAIL : Error alarm (Closed in the normal state, opened in the failure state or while the power is down.) Control operation Control width: 0.02 to 4.00 mg/L (±0.02 to ±2.00 mg/L) |
| Cleaning output | 1 point AC power control output ( Applied power supply voltage) Relay contact, SPST (1a) Contact function: Solenoid valve for cleaning control |
| External input | 1 point Contact shape: No-voltage "a" contact for open collector Contact function: External input for cleaning or transmission holding if cleaner is not attached. |
| Communication function | RS-485 2 wire system, isolated from the input/output circuit Not isolated from transmission circuit |
| Temperature compensation range | 0 to 50°C |
| Calibration method | Span calibration in the air Zero: Sodium sulte solution Span: Air or DO saturated water |
| Self-diagnosis function | Calibration error, sensor diagnosis error, converter error |
| Operating temperature range | -20 to 55°C without freeze |
| Power supply | 100 to 240 V AC ±10% 50/60 Hz Power consumption: 20 VA (max) |
| Structure | IP65 : Mounted on 50A pole or wall Case: Aluminum alloy (coated with epoxy-denatured melamine resin), hood: SUS304 |
| Mass | Main unit body: Approx. 3.5 kg Hood, mounting brackets: Approx. 1 kg |
| Regulatory compliance | CE marking, FCC |
| Compatible sensor | DO-2000 |
＊1: The standard for effect on the reading by the electromagnetic eld of the radiated radio frequency and HD-200FL by the conducted interference is within the measured dissolved oxygen value ± 0.4 mg/L.
＊2: When the sensor cable, the transmission cable, or the contact input cable is extended by 30 m or more, the surge test under the EMC Directive for CE marking is not applied.
＊3: An arrester (spark over voltage: 400 V) is implemented for transmission output, contact input, and communication. However, use a most suitable surge absorption element on the connection lines in accordance with the ambient environment, the situation of equipment installed, and the externally connected equipment.
Probe specifications
| Model | DO-2000 |
|---|---|
| Measurement principles | Optics (fluorescence) |
| Sample water | 0 to 50°C |
| Wetted material | SUS316、NBR、PVC |
| Response time | 90% response: Within 30 s 95% response: Within 60 s |
| Mass | Approx. 3.0 kg (incl. 10 m cable) |
Sensor cap specifications (replaceable)
| Model | 5700A |
|---|---|
| Wetted material | NBR, PMMA |
| Mass | Approx. 5.0 g |
| Membrane memory | Built-in memory in the membrane unit, automatic recognition |
