Automatic total nitrogen/phosphorus monitor
The future of total nitrogen and total phosphorus measurement not only involves compliance with regulations but also has the potential to contribute to proactive enhancements of corporate values. The future of measurement, regulatory compliance, and enhancement of corporate value will be pursued by proposing technological innovation, improvement, and LCC (Life Cycle Cost) reduction.
Extension of reagent lifespan (twice as long as conventional)
The stability of potassium persulfate has been improved through the development of dedicated reagents. The reagent replacement cycle has been extended from one month to two months. *1
*1: Depends on reagent storage and installation conditions (ambient temperature) (compared to our previous products)
Power consumption has been reduced by approximately 30%, and the amount of pure water and waste liquid has been halved
Reduction of costs (including labor) and environmental impact associated with electricity consumption, use of pure water, and waste liquid treatment (compared to previous estimates).
Adoption of a robust weighing system resistant to contamination
Adoption of a new weighing method (meniscus weighing method) and enhanced automatic cleaning function (optional), while maintaining the reagent volume reduction (1/10) achieved with our previous models. Contributes to extending the maintenance cycle.
Reevaluation of existing equipment
Improved have been made to specifications to make the equipment more reliable by reducing the use of mechanically driven components such as solenoid valves.
| General specifications | Equipment name | Automatic total nitrogen/phosphorus monitoring system | |
|---|---|---|---|
| Model | TPNA-500 | ||
| Dimensions *1 | 460 (W) mm × 385 (D) mm × 1600 (H) mm | ||
| Mass | Approx. 87 kg | ||
| Power supply | 100 V to 240 V AC ±10%, 50 Hz/60 Hz | ||
| Power consumption | 100 V to 240 V AC: Approx. 250 VA | ||
| Performance | Measurement range *2 | Total nitrogen: 0 mg N/L to 2/5/10/20/50/100/200/500/1000 mg N/L Total phosphorus: 0 mg P/L to 0.5/1/2/5/10/20/50/100/250 mg P/L | |
| Repeatability | Within ±3% of the full scale (Total nitrogen full scale: 50 mg N/L or less, total phosphorus full scale: 10 mg P/L or less) Within ±5% of the full scale (Total nitrogen full scale: 100 mg N/L to 1000 mg N/L, total phosphorus full scale: 20 mg P/L to 250 mg P/L) Both with standard solution | ||
| Measurement principle | Total nitrogen: Alkaline potassium persulfate, ultraviolet oxidative dissolution - ultraviolet absorption spectrophotometry Total phosphorus: Potassium persulfate, ultraviolet oxidative dissolution - Molybdenum blue spectrophotometric method | ||
| Number of measurement points | One point (standard), two points (option) | ||
| Number of measurement ranges *3 | One range (standard), 2 ranges (option) | ||
| Measurement cycle | 60 min | ||
| Installation conditions | Ambient temperature | 2℃ to 40℃ | |
| Ambient humidity | Relative humidity 85% or less (no condensation) | ||
| Ambient environment |
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| Measurement conditions | Sample water conditions *4, *5, *6,*7 | Temperature | 2℃ to 40℃ (no freezing) |
| Flow rate |
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| Pure water/tap water supply conditions*8 | Amount of usage | 43 L/month (depending on the measurement range) | |
| Water quality |
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| Supply method | Supply by the tank (standard) or continuous supply by the pure water equipment (option) | ||
| Supply pressure | 0.1 MPa to 0.5 MPa | ||
| Input/output specifications | Analog output | Number of points | Standard: 4 points Option (3-component specification/2-point meter specification): 8 points |
| Type | Standard: 4 mA to 20 mA DC, 0 mA to 16 mA DC (Set to 4 mA to 20 mA DC at the factory. It can be switched to 0 mA to 16 mA DC from the screen.) Option: 0 V to 1 V DC, 1 V to 5 V DC | ||
| Description | Standard: TN concentration, TP concentration, TN load, TP load, flow rate per hour Option (3-component specification): COD concentration, COD load, COD instantaneous concentration Note: The COD output settings depend on the equipment conditions. | ||
| Output impedance | 500Ω or less | ||
| Contact output | Number of points | Standard: 16 points Option (3-component specification/2-point meter specification): 22 points | |
| Type | No-voltage output contact | ||
| Form | Isolated output | ||
| Output capacity | 250 V AC 3 A 30 V DC 3 A (Only 30 V DC 3 A is available for the “Maintenance” contact) | ||
| Status output | Meas., Calibration, Standby, Maintenance, SYNCHRONOUS IDLE 1, SYNCHRONOUS IDLE 2, Power, etc. | ||
| Alarm output | Hi limit alarm (TP, TN, COD), H.Hi limit alarm (TP, TN, COD), Load limit alarm (TP, TN, COD), Sample Lack, Lack Blank, Lack Reag., Lack Span, Full Drain Tank, Total Alarm 1 to 6, various meter errors, etc. | ||
| Analog input | Number of points | Standard: 1 point Option (3-component specification/2-point meter specification): 2 points | |
| Type | Standard: 4 mA to 20 mA DC Option: 1 V to 5 V DC | ||
| Description | Flow rate (full scale can be set as desired), UV/COD meter concentration | ||
| Contact input | Number of points | Standard: 9 points Option (3-component specification/2-point meter specification): 18 points | |
| Type | No-voltage a contact input (open collector is available) | ||
| Form | Isolated input: Common to the (-) side | ||
| ON resistance | 100 Ω (max.) | ||
| Open-circuit voltage | 26 V DC (max.) | ||
| Short-circuit current | 13 mA DC (max.) | ||
| Function | Meas. Start, Cal. Start, Modify Date, Line Select, Flow Mainte, Flow Err., Flow Power, Flow No Drain, UV/COD Mainte, UV/COD Err., UV/COD Power, etc. | ||
| Equipment function | Display | Touch panel type liquid crystal (color) | |
| Load calculation function | Standard: TP/TN load calculation function is provided Option: COD and 2-point meter load calculation function are provided | ||
| Option | Turbidity compensation function is provided (TN) (Turbidity compensation wavelength: 275 nm) | ||
| Memory function | Measurement value: Memory for over 1 year (including the daily and hourly reports) Alarm history: 500 events Calibration history: 100 events Operation history: 100 events Note: USB external memory device can be used. | ||
| Communication function | Standard: RS-485 Option: RS-232C | ||
| Communication protocol | Modbus | ||
| Printer | Provided (recording paper width: 58 mm) With automatic take-up equipment | ||
| Reagent | Reagent A | 0.8 mL per measurement (capacity: 1000 mL) | |
| Solution B | 0.2 mL per measurement (capacity: 250 mL) | ||
| Solution C | 0.1 mL per measurement (capacity: 250 mL) | ||
| Solution D | 0.1 mL per measurement (capacity: 250 mL) | ||
| Solution E | 0.19 mL per measurement (capacity: 250 mL) | ||
| Solution F | 0.2 mL per measurement (capacity: 250 mL) | ||
| Span solution | 50 mL per measurement (capacity: 1000 mL) | ||
| Replacement cycle | One month (only under certain storage/usage environment) | ||
*1: Compatible with older products: Model TPNA-300, PN-100 series channel base (standard)
*2: Full-scale values for both total nitrogen and total phosphorous must be greater than or equal to 0.2 and less than or equal to 100
*3: When the first range is set to low concentration, the following condition must be met for the same measurement component:
1 ≦ Second range full scale/first range full scale ≦ 50
*4: The chemical cleaning function for the sample line can be selected according to the nature of the sample
*5: The provided overflow tank can be installed in either the left/right side or rear of the main unit
*6: The distance from the provided overflow tank to the main unit should be within 1 m
*7: The sample must not contain the components that could affect the measurement (metallic ions, etc.)
*8: When tap water is supplied, flush the pipes by running the water for approximately 30 minutes before supplying.
Perform the installation work while taking the features of the analyzer into consideration. Also, ensure an environment in which the equipment can operate normally. If the equipment is not operating normally due to impairment, operating conditions, or other unexpected events, take appropriate action so that no damage to the equipment will occur.
Do you have any questions or requests? Use this form to contact our specialists.
