Technical specifications

NICO

Measurement technology	Light source	Xenon flash lamp
Measurement technology	Detector	4 photodiodes + filter
Measuring principle		Absorption (Attenuation)
Optical path		0.3 mm, 1 mm, 2 mm, 5 mm, 10 mm, 20 mm, 50 mm
Parameters		NO₃ / NO₃-N, NO_x / NO_x-N (calibrated with NO₃ standard solution)

Response time	20 s
Temperature compensation	No
Turbidity compensation	Yes
Data logger	~ 2 GB
Reaction time T100	20 s
Measurement interval	≥ 10 s

Interface	digital	Ethernet (TCP/IP)
Interface	digital	RS-485 (Modbus RTU)
Power supply		12 - 24 VDC (± 10 %)
Power consumption		≤ 7 W

Connection		Fixed cable with 8-pin M12 connection
Housing material		Stainless steel (1.4571/1.4404) or titanium (3.7035)
Dimensions (L x Ø)		~ 470 mm x 48 mm*	~ 18.5“ x 1.9“ *
Weight	VA	~ 3 kg	~ 6.6 lbs
Weight	Ti	~ 2 kg	~ 4.4 lbs

*with 10 mm path

Ambient temperature		+2...+40 °C	~ +36 to +104 °F
Sample temperature	in situ	+2...+40 °C	~ +36 to +104 °F
Sample temperature	in FlowCell	+2...+40 °C	~ +36 to +104 °F
Relative humidity		0 ... 95 % non-condensing
Storage temperature		-20...+80 °C	~ -4 to +176 °F

Max. pressure	with SubConn	30 bar	~ 435 psi
	with fixed cable	3 bar	~ 43.5 psi
	in FlowCell	1 bar, 2...4 L/min	~ 14.5 psi at 0.5 to 1.0 gpm
Inflow velocity		0.1...10 m/s
Degree of protection	Sensor side	IP68	NEMA 6P
Degree of protection	Controller side	IP65/ IP67	NEMA 6P
Operating altitude		max. altitude 2000 m (6562 ft)

Maintenance effort	≤ 0.5 h/month typical
Calibration/ maintenance interval	24 months
System compatibility	TriBox3, TriBox mini, Modbus RTU
Warranty	1 year (EU & US: 2 years)

Measuring ranges and detection limits

Table: Note: 1 mg/L _NO3-N corresponds to 4.43 mg/L _NO3.
Path length	Parameter	Measuring range [mg/L]	Accuracy ¹ ² ³	Precision¹ [mg/L]	Detection limit¹ [mg/L]	Limit of quantification¹ [mg/L]
0.3 mm	Nitrate NO₃-N	0...165	± (5 % + 3,3)	0.50	1.65	5.0
0.3 mm	Nitrate NO₃	0...730	± (5 % + 14,5)	2.22	7.26	22.2
1 mm	Nitrate NO₃-N	0...50	± (5 % + 1)	0.15	0.5	1.5
1 mm	Nitrate NO₃	0...222	± (5 % + 4,4)	0.66	2.2	6.65
2 mm	Nitrate NO₃-N	0...25	± (5 % + 0,5)	0.075	0.25	0.75
2 mm	Nitrate NO₃	0...111	± (5 % + 2,2)	0.33	1.1	3.32
5 mm	Nitrate NO₃-N	0...10	± (5 % + 0,2)	0.03	0.1	0.3
5 mm	Nitrate NO₃	0...44	± (5 % + 0,88)	0.133	0.44	1.33
10 mm	Nitrate NO₃-N	0...5	± (5 % + 0,1)	0.015	0.05	0.15
10 mm	Nitrate NO₃	0...22	± (5 % + 0,44)	0.067	0.22	0.67
20 mm	Nitrate NO₃-N	0...2,5	± (5 % + 0,05)	0.008	0.025	0.075
20 mm	Nitrate NO₃	0...11	± (5 % + 0,22)	0.033	0.11	0.33
50 mm	Nitrate NO₃-N	0...1	± (5 % + 0,02)	0.003	0.01	0.03
50 mm	Nitrate NO₃	0...4,43	± (5 % + 0,09)	0.014	0.044	0.133

¹Under laboratory conditions
²Related to a nitrate standard solution
³General: +/- (5 % + 2-fold detection limit)