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〈Catalog〉Industrial Water Quality Measuring Instruments
| Product name | Dissolved oxygen converter | |||
|---|---|---|---|---|
| Model | HD-200 | |||
| Combined sensor | 5505, 5510 (A bipolar diaphragm type polarography sensor) | |||
| Combined probe | DO-1100 | |||
| Measurement range | Dissolved oxygen concentration | 0 mg/L to 20 mg/L (Display range: 0 mg/L to 22 mg/L) | ||
| Saturation degree | 0% to 200% (Display range: 0% to 200%) | |||
| Temperature | 0℃ to 50℃ (Display range: -10℃ to 110℃) | |||
| Display resolution | Dissolved oxygen concentration | 0.01 mg/L | ||
| Saturation degree | 1% | |||
| Temperature | 0.1℃ | |||
| Performance | Dissolved oxygen concentration | Repeatability | Within ±0.5% of the full scale (response for equivalent input) | |
| Linearity | Within ±0.5% of the full scale (response for equivalent input) | |||
| Temperature | Repeatability | ±0.5℃(response for equivalent input) | ||
| Linearity | ±0.5℃(response for equivalent input) | |||
| Transmission output | Number of output | 2 (The negative terminals for transmission outputs are internally connected at the same electric potential) | ||
| Output type | 4 mA to 20 mA DC: input/output isolated type | |||
| Load resistance | Maximum: 900Ω | |||
| Linearity | Within ±0.08 mA (output only) | |||
| Repeatability | Within ±0.02 mA (output only) | |||
| Output range | Output 1 | Dissolved oxygen concentration: Selection from preset ranges or free range input within measuring range. | ||
| Output 2 | Free setting within a range between -20℃ and 130℃ | |||
| 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 | Number of output | 3 | ||
| Output type | No-voltage contact output | |||
| Contact type | Relay contact; SPDT (1c) | |||
| Output capacity | 250 V AC 3 A, 30 V DC 3 A (resistance load) | |||
| Contact function | R1 and 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.) | |||
| Alarm setting range | Selectable from dissolved oxygen concentration, and temperature | |||
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| Control setting range |
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| Cleaning output | Number of output points | 1 | ||
| Output type | Contact output with voltage (output of connected power supply voltage) | |||
| Contact type | Relay contact; SPST (1a) | |||
| Output contact capacity | 250 V AC 0.5 A | |||
| External instrument | Solenoid valve for cleaning control | |||
| Settings | Cleaning period | 0.1 hours to 168.0 hours | ||
| Cleaning time | 2 seconds to 600 seconds | |||
| Hold time | 2 seconds to 600 seconds | |||
| Timer accuracy | Within 2 minutes per month | |||
| Description of cleaning operation | One of the following operations.
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| Contact input | Number of input | 1 | ||
| Contact type | No-voltage “a” contact of open collector | |||
| Conditions | ON resistance: 100 Ω max. Open voltage: 24 V DC Short-circuit current: 12 mA DC max. | |||
| Contact function | External input for cleaning or transmission holding if cleaner is not attached. | |||
| Transmission capability | Communication type | RS-485 | ||
| Signal type | 2 wire system, isolated from the input circuit Not isolated from transmission circuit | |||
| Temperature compensation | Applicable temperature element | Platinum resistor: 1 kΩ (0℃) (The temperature sensor is built into the probe DO-1000.) | ||
| Temperature compensation range | 0℃ to 50℃ | |||
| Temperature calibration | 1 point calibration comparing to reference thermometer | |||
| Calibration | Calibration method | Span calibration in the air or DO saturated aquaous solution | ||
| Number of calibration points | Atmospheric calibration: 1 point (Zero electric calibration is carried out automatically) Saturation liquid calibration : 2 points (zero calibration is omitted) | |||
| Additional capabilities | Salinity compensation (0.0% to 5.0%) Automatic detection of calibration failure (Zero error, Sensitivity error) Calibration history (Elapsed days from the last calibration which ever zero or span, zero shift, span sensitivity) | |||
| Self-check | Calibration error | Zero calibration error, sensitivity error, outside of temperature calibration range | ||
| Electrode diagnostic error | Sensor error (damage to diaphragm), disconnection of sensor (or damage to sealing), temperature sensor short-circuit, and electric discontinuity of temperature sensor | |||
| meter error | CPU error, CPU error, ADC error, memory error | |||
| Operating temperature range | -20℃ to 55℃ (without freeze) | |||
| Operating humidity range | Relative humidity: 5％ to 90％ (without condensation) | |||
| Storage temperature | -25℃ to 65℃ | |||
| Power supply | Rated power supply voltage | 100 V to 240 V AC ±10% 50/60 Hz | ||
| Power consumption | 15 VA (max) | |||
| Others | With power switch for maintenance use | |||
| Compatible standards | CE marking | EMC :EN61326-1 Class A, Industrial electromagnetic environment Safety :EN61010-1 RoHS :EN50581 9. Industrial monitoring and control instruments | ||
| FCC rules | Part15 Class A | |||
| Structure | Installation | Outdoor installation type | ||
| Installation method | Mounted on 50A pole or wall | |||
| Protection code | IP65 | IEC60529, JIS C0920 | ||
| Case material | Aluminum alloy (coated with epoxy-denatured melamine resin) | |||
| Material of fittings | SUS304 | |||
| Material of hood | SUS304 stainless steel (coated with epoxy-denatured melamine resin) | |||
| Material of window | Polycarbonate | |||
| Display element | Reflective monochrome LCD | |||
| External dimensions | 180 (W) × 155 (H) × 115 (D) mm (excluding mounting brackets) | |||
| Mass | Main body: Approx. 3.5 kg; cover and mounting brackets: Approx. 1 kg | |||
*1: The standard for effect on the reading by the electromagnetic field of the radiated radio frequency and 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 to 30 m or longer, the surge test specified in the EMC directive for CE marking is not applied.
Note
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.