Ambient Temperature:
10 - 30 °C ± 4 °C deviation at 5 - 95% relative humidity (non-condensing)
Analogue Outputs:
Active 0 - 20 mA (or 4 - 20 mA) max. 500 Ohm load, standard 4, optional: 8
Automatic cleaning:
Yes; Frequency freely programmable: 6 hours, 12 hours, daily, weekly
Calibration:
Automatic; 2-point; offset or slope; Frequency freely programmable: 6 hours, 12 hours, daily, weekly. Note: manufacturer recommends that a calibration is done when the reagents are replaced
Certifications:
CE, ETL certified to UL and CSA safety standards, UKCA
Cycle Time:
Default: 45 min.
Continuous: 36 min.
Demineralised water:
Internal dilution option: Rinse water and Dilution water
Digital outputs:
Profibus DP or Modbus RTU
Dimensions (H x W x D):
688 mm x 460 mm x 340 mm
Drain:
Atmospheric pressure, vented, min. Ø 32 mm
Earth connection:
Dry and clean earth pole with low impedance (< 1 Ohm) using an earth cable of > 2.5 mm²
Instrument air:
Dry and oil free according to ISA-S7.0.01-1996 quality standard for instrument air. Used to flush the instrument in corrosive environement. Min. 0.2 bar - Max. 0.5 bar
Interferences:
Ions, e.g., antimony (III) (Sb3+), bismuth (III) (Bi3+), chloroplatinate (PtCl62–), gold (III) (Au3+), iron
(III) (Fe3+), lead (II) (Pb2+), mercury (II) (Hg2+), metavanadate (VO3–) and silver (I) (Ag+) can cause
precipitation with nitrate. Copper (Cu2+) ions can decompose the diazonium salt and cause a low
result. NCl3 can cause a red color. Strong oxidizing agents interfere.
Large quantities of color and turbidity interfere. Fats, oil, proteins, surfactants and tar interfere.
Lower Limit of Detection (LOD):
0.25 - 10 mg/L TN: 0.25 mg/L
0.5 - 20 mg/L TN: 0.5 mg/L
1.25 - 50 mg/L TN: 1.25 mg/L
2.5 - 100 mg/L TN: 2.5 mg/L
Material:
Hinged part: Thermoform ABS, door: PMMA
Wall section: Galvanised steel, powder coated
Measurement method:
Colorimetric
NEDD colorimetric method after reduction with hydrazine
Measuring range:
Internal Dilution
0.25 - 10 mg/L TN
0.5 - 20 mg/L TN
1.25 - 50 mg/L TN
2.5 - 100 mg/L TN
Model:
EZ2729sc
Number of sample streams:
Standard: 1
Optional accessory for 2, 4, or 8 sample streams
Outputs:
Optional: Claros Ethernet connection and Modbus TCP/IP Ethernet connector; LAN version; 10/100 Mbps or Profinet or Ethernet IP
Parameter:
Nitrogen, Total
Power:
230 VAC, 50/60 Hz
120 VAC, 50/60 Hz
Max. power consumption: 240 VA
Precision:
Better than 4% full scale range for standard test solutions
Protection Class:
IP44
Reagent requirements:
Keep reducting and colour solution refrigerated: 10 - 15 °C, all other reagents between 10 - 30 °C
Relays:
5 contacts, not user configurable: Malfuntion, maintenance, analysis ready, sample ready, sample ready (EZ9150)
Sample Flow Rate:
100 - 300 mL/min
Sample Pressure:
By external overflow vessel (open to atmospheric pressure)
Sample Quality:
Maximum particle size 100 µm, < 0.1 g/L; Turbidity < 50 NTU
Sample Temperature:
10 - 30 °C
Validation:
Automatic; Frequency freely programmable: 6 hours, 12 hours, daily, weekly
Warranty:
12 months
Weight:
Max. 35 kg