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Last updateMon, 15 Sep 2014 5am

C 7685.001
E.Conductivity - Resistivity controller

 

Add the following to the common Features/Specifications

of the 7685 Series shown overleaf

 

Applications:

- high purity water

- micro electronics industry

- electroplating

- pharmaceutical industry 

Scales in μS, mS and Mohm

• Autoranging

• Temperature readout

• Dual filter software 

Calibration parameters display

• Dual set-point and alarm conditions display

• Automatic or manual temperature compensation

• Table of high purity water stored into the microcomputer

• Isolated output:

- 0/20 mA or 4/20 mA selectable

- programmable input on the span 

Automatic or manual operation

• Dual Set-point with hysteresis, delay, and min/max

programmable functions 

• Alarm:

- continuous/flashing

- min/max and delay programmable

- on Set-points timing 

• EEPROM parameters storage

• Automatic overload protection and reset

• Extractable terminal block

• 96x96 (1/4 DIN) housing 

Specifications 

Operating mode

Automatic/Manual 

E.C. Cells

* K = 0.01/0.10/1.0/10 cm-1

* Input scales: 200.0 nS/20.00 mS (see table)

readout in Mohm

* Autoranging: ON/OFF

Zero adjustment: +/- 10 %

Sens. adjustment: 60/160 %

* Temp. reference: 10/25 °C

* ATC coefficient: 0/3.50 %/°C

* Software filter 90%RT: 0.4/20.0 s for small/large variations

Display resolution: 1/1000 at 20 °C 

Temperature

Input: RTD Pt100 2/3 wires connection

Measuring and compensation range: 0/+100 °C

Resolution: +/- 0.1 °C

Zero adjustment: +/- 2 °C

Manual Temp. comp: 0/100 °C 

Options

091.3711       dual analog programmable and isolated output.

The operator may select an output for temperature.

091.701          RS232 isolated output.

The output sends the data (E.C., °C) to the serial port of

the computer.

091.404          24 Vac power supply

091.4143       9/36 VDC power supply

An option dual line display for E.C. and temperature readout is

available on request.

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