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Last updateMon, 15 Sep 2014 5am

TU 7685 - TU 7685.010
Turbidity and Suspended solids

 

Add the following to the common

Features/Specifications of the 7685 Series shown overleaf

 

• Input from preamplified sensor

• Manual, automatic operation 

• Dual filter software 

• 0/20 or 4/20 mA selectable output, programmable on the

input scale 

• 2 Set point with min/max function, hysteresis and adjustable delay  

• 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 

• Easy to use sotware with 3 access levels:

display, calibration and configuration of process parameters

 

Additional features of TU 7685.010

• Manual, automatic, or simulated operating mode

• Selection of the probe TU820 (USEPA 180.1)

• Adjustable coefficient for mg/l/NTU both PSL and SiO2

• Manual or automatic zero calibration

• Fine adjustment of the analog output

• On/Off of the hold of the analog output during the calibration

• Burned lamp alarm

• Continuous or flashing alarm

In-line measuring probes 

• TU 810 Body in PVC. Method EN 27027 ISO 7027

• TU 820 Body in PVC. Method USEPA 180.1

• TU 8105 Body in PVDF. Method EN 27027 ISO 7027 

Submersible measuring probe

• TU 8182 Body in PVC. Method EN 27027 ISO 7027 

Accessories for in-line measuring probes

• TU 910 Flow cell for TU 810, TU 8105 and TU 820

• SZ 9481 Cable 10 m + connector

• SZ 9483 Cable 30 m + connector 

Specifications 

Range TU 7685                    : 4.000/400.0 NTU - 40.00/4000 NTU

9.999/999.9 mg/l - 99.99/9999 mg/l of SiO2

9.999/999.9 ppm - 99.99/9999 ppm of SiO2

Range TU 7685.010            : 4.000/400.0 NTU - 40.00/4000 NTU

4.000/400.0 mg/l - 40.00/4000 mg/l of SiO2

9.999/999.9 ppm - 99.99/9999 ppm of SiO2

Resolution                            : 0.05% of scale

Zero of the probe                 : 0.0/10.0 % f.s.

Sensitivity                              : 80.0/120.0 %

Filter software 90%RT         : 5/220 s for small/large variations

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

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

 

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