| ral
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 |
- 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
|
| Measurement
conditions |
Sample water
conditions
*4, *5, *6,*7 |
Temperature |
2℃ to 40℃ (no freezing) |
| Flow rate |
- 0.5 L/min to 5 L/min (when OF-3 is used)
- 5 L/min to 20 L/min(when OF-30 is used)
|
| Pure water/tap
water supply
conditions*8 |
Amount of usage |
43 L/month (depending on the measurement range) |
| Water quality |
- When the customer supplies pure water, use the water of class
A2 or above, as specified in JIS K0557: 1998, which does not contain nitrogen and phosphorus compounds.
- When a pure water unit is used, the tap water criteria defined by the Water Supply Act must be met.
|
| 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) |
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