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Electrochemical Monitorstb1

TU 7685 – Turbidity and Suspended solids

Add the following to the common Features/Specifications of the 7685 Series shown overleaf

• Input from preamplified sensor
• Manual, automatic and simulated operation
• Selectable scales:
0/4.000 0/40.00 0/400.0 0/4,000 NTU
0/4.000 0/40.00 0/400.0 0/4,000 mg/lt of PSL
0/9.999 0/99.99 0/999.9 0/9,999 mg/lt of SiO2
• Autoranging
• Dual filter software
• Alphanumeric backlit display
• 0/20 or 4/20 mA selectable output, programmable on the
input scale
• 2 Set point with min/max function, hysteresis and
adjustable delay
• Coninuous/flashing alarm
• Alarm: min/max turbidity, set point timing, dirty lens,
empty cell, external light too high
• Check signal of dirty lens
• Autoclean relay with programmable cycle repetition,
cleaning and holding time
• 3 access levels: display, calibration and configuration of
process parameters
• 110/220 Vac with overload power protection
• Dimensions: 96x96x155 mm DIN 43700
• Panel mounting

This instrument is designed to operate together with TU 810, TU 8105 and TU 8182 amplified Turbidity probe which can be installed over 100 m far from the controller. In addition, the software allows to use the probe TU 820 (USEPA 180.1 method). Accessories allow the system to operate in flow, in line and in immersion applications.

Specifications

Operating mode: Automatic/Manual
Measuring unit: NTU/mg/l
Range: 4/400 NTU – 40/4,000 NTU
4/400 – 40/4,000 mg/lt of PSL
9/999 – 99/9,999 mg/l of SiO2
Filter software 90%RT: 5/220 s for small/large variations
Resolution: 0.05% of scale
Zero of the probe: 0.0/10.0 % f.s.
Sensitivity: 80.0/120.0 %
Set point A/B: ON-OFF
Hysteresis: 0/10 % of the scale
Relay delay: 0.0/99.9 s
Relay contacts: 5 A 220 V
Low/high alarm: 0 to full scale
Autoclean: Manual/Auto+Manual
Analog output: 0-20/4-20 mA isolated
Response time: 10 s for 98% of input
R max: 600 ohm
Serial output: RS232 option 091.701
Humidity: 95% without condensate
Power: 110/220 Vac +/-10% 50/60 Hz 5 VA max
Isolation: 4000 V (IEC 348)
Dimensions: 96x96x155 mm (1/4 DIN)
Options
091.3713: Dual analog output
091.4141: 9/36 VDC power supply

Meauring probes
TU 810 – TU 820
Turbidity probe in PVC body
TU 8105
Turbidity probe in PVFD body
TU 8182
Turbidity probe autoclean submersible in PVC body

Accessories
• SZ 9481 Connector + 10 m cable
• SZ 9483 Connector + 30 m cable
• TU 910 Flow cell for TU 810, TU 8105 or TU 820
• Formazine Standard solutions

TU 810 – TU 8105 – TU 820tb2

Turbidity probes

Common Specifications:

Response time: 10 s
Measuring method: Nephelometric (ISO 7027 – EN 27027)
Preamplifier: built-in
Power: ± 12 Vdc from TU 7685
Ambient Temperature: 0/50 °C
Sample Temperature: 0/50 °C
Sample Pressure: 6 bar max. a 20 °C
Connector: IP 67
Optical window material: Acrilic
Pipe Tee for direct inline mounting: 2” (DN 50)
Diameter: 40 mm
Cable length: 100 m max.

TU 810 – TU 8105 Specifications

Range: 0/4000 NTU
Resolution: 0.001 on scale 0/4.000 NTU
0.01 on scale 0/40.00 NTU
0.1 on scale 0/400.0 NTU
1 on scale 0/4,000 NTU
Accuracy: ± 5% of reading on 0/400 NTU
± 10% of reading on 400/4,000 NTU
Light source: LED I.R. 890 nm
TU 810 body material: PVC
TU 8105 body material: PVDF
O Ring: NBR (Acrylat Nitrile)

TU 820 Specifications

Range: 0/400 NTU
Resolution: 0.001 on scale 0/4.000 NTU
0.01 on scale 0/40.00 NTU
0.1 on scale 0/400.0 NTU
Accuracy: ± 5% of reading on 0/400 NTU
Light source: Tungsten lamp 2200 °K
Average life of the lamp: 100,000 hours
Sensor sensitivity: 600 nm
Body material: PVC
O Ring: NBR (Acrylat Nitrile)

TU 910 Turbidity flow cell

tb3

This measuring cell has been designed for using with TU 810, TU 820 or
TU 8105 turbidity probes.
It allows very accurate measurements even at very low turbidity values,
as requested by drinking water applications.
It is provided with a flow control to avoid air bubbles from grab samples
under pressure.
Cleaning and calibrating operations are very easy.
The package includes the 1892702 adaptor and O Ring 2713118
for the TU 810 – TU 820 – TU 8105 installation.

Specifications

Applications: in flow measurement
Flow of sample: 0.2/25 l/min.
Temperature: 0/50 °C
Temperature of sample: 0/50 °C
Pressure of sample: 6 bar max. a 20 °C
Material: PVC
Collar nut thread diameter: 2 1/2”
Fittings: 1/4″
Tubing: PVC 4×6 mm l=5m

 

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