Technical specifications

Measurement technology

Light source

Xenon flash lamp

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, NOx / NOx-N(calibrated with NO3 standard solution)
SAC254, CODeq, BODeq, TOCeq, DOCeq, Turb, TSSeq, UVT254, UVT254n

Standard applied

DIN 38404-3, based on DIN 7027

Response time

40 s

Temperature compensation

No

Turbidity compensation

Yes

Data logger

~ 2 GB

Response time T100

40 s

Measuring interval

≥ 20 s

interface

digital

Ethernet (TCP/IP)

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

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

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

~ 0.33 t 33 fps

Degree of protection

Sensor side

IP68

NEMA 6P

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 depending on the path length*

Table: Note: 1 mg/L NO3-N corresponds to 4.43 mg/L NO3.

Parameters

Unit

Path length

0.3 mm

1 mm

2 mm

5 mm

10 mm

20 mm

50 mm

NO3-N

mg/L

0...165

0...50

0...25

0...10

0...5

0...2,5

0...1

NO3

mg/L

0...730

0...222

0...111

0...44

0...22

0...11

0...4,43

SAC254

1/m

0...2000

0...600

0...300

0...120

0...60

0...30

0...12

CODeq**

mg/L

0...2920

0...876

0...438

0...175

0...88

0...44

0...18

BODeq**

mg/L

0...960

0...288

0...144

0...58

0...29

0...14

0...6

TOCeq**

mg/L

0...1168

0...350

0...175

0...70

0...35

0...18

0...7

DOCeq**

mg/L

0...1168

0...350

0...175

0...70

0...35

0...18

0...7

Turb***

FAU

0...4000

0...4000

0...1477

0...444

0...197

0...93

0...36

TSSeq****

mg/L

0...6000

0...1800

0...900

0...360

0...180

0...90

0...36

UVT254

%

0...96,6

0...96,6

0...96,6

0...96,6

0...96,6

0...96,6

0...96,6

UVT254n

%

31,6

70,8

84,1

93,3

96,6

98,3

99,3

* under laboratory conditions
** based on KHP (Note: 100 mg COD standard solution corresponds to 85 mg/l KHP)
*** Formazin attenuation unit
**** based on SiO2
***** unit of the absorption measure

Measurement accuracy & repeatability

Path length

Parameters

Accuracy * **

Precision* [mg/L] [mg/L]

0.3 mm

Nitrate NO3-N

± (5 % + 3,3)

0,50

Nitrate NO3

± (5 % + 14,5)

2,22

1 mm

Nitrate NO3-N

± (5 % + 1)

0,15

Nitrate NO3

± (5 % + 4,4)

0,66

2 mm

Nitrate NO3-N

± (5 % + 0,5)

0,075

Nitrate NO3

± (5 % + 2,2)

0,33

5 mm

Nitrate NO3-N

± (5 % + 0,2)

0,03

Nitrate NO3

± (5 % + 0,88)

0,133

10 mm

Nitrate NO3-N

± (5 % + 0,1)

0,015

Nitrate NO3

± (5 % + 0,44)

0,067

20 mm

Nitrate NO3-N

± (5 % + 0,05)

0,008

Nitrate NO3

± (5 % + 0,22)

0,033

50 mm

Nitrate NO3-N

± (5 % + 0,02)

0,003

Nitrate NO3

± (5 % + 0,09)

0,014

*under laboratory conditions
**referred to a nitrate standard solution

Detection limit

Parameter

Unit

Path length

0.3 mm

1 mm

2 mm

5 mm

10 mm

20 mm

50 mm

NO3-N

mg/L

1,65

0,5

0,25

0,1

0,5

0,025

0.01

NO3

mg/L

7,26

2,2

1,1

0,44

0,22

0,11

0,044

SAC254

1/m

50

15

7,5

3

1,5

0,75

0,3

CODeq

mg/L

73

22

11

4,4

2,2

1,1

0,44

BODeq

mg/L

24

7,2

3,6

1,44

0,72

0,36

0,14

TOCeq

mg/L

29,2

8,76

4,38

1,75

0,88

0,44

0,18

DOCeq

mg/L

29,2

8,76

4,38

1,75

0,88

0,44

0,18

Turb

FAU

197.37

54

26,48

10,46

5,21

2,60

1,04

TSSeq

mg/L

180

54

27

10,8

5,4

2,7

1,08

UVT254

%

25,1

25,1

25,1

25,1

25,1

25,1

25,1

UVT254n

%

0

0,0001

0,1

6,3

25,1

50,1

75,9

Limit of quantification

Parameter

Unit

Path length

0.3 mm

1 mm

2 mm

5 mm

10 mm

20 mm

50 mm

NO3-N

mg/L

5

1,5

0,75

0,3

0,15

0,075

0.03

NO3

mg/L

22,2

6,65

3,32

1,33

0,67

0,33

0,133

SAC254

1/m

166,67

50

25

10

5

2,5

1

CODeq**

mg/L

243,33

73

36,5

14,6

7,3

3,65

1,46

BODeq**

mg/L

80

7,2

3,6

1,44

0,72

0,36

0,14

TOCeq**

mg/L

97,33

29,2

14,6

5,84

2,92

1,46

0,584

DOCeq**

mg/L

97,33

29,2

14,6

5,84

2,92

1,46

0,584

Turb***

FAU

848,46

197,37

92,56

35,55

17,535

8,7

3,47

TSSeq****

mg/L

600

180

90

36

18

9

3,6

UVT254

%

UVT254n

%

* under laboratory conditions
** based on KHP (Note: 100 mg COD standard solution corresponds to 85 mg/l KHP)
*** Formazin attenuation unit
**** based on SiO2
***** unit of absorption measure