toshcon

Thursday, 09 21st

Last updateMon, 15 Sep 2014 5am

PH 7685.010

pH+ORP controller

 

 

• Applications:

- pH + ORP measuring

- chromate and cyanide treatment plants

- swimming pool

- autoclean sensors

- PFM / PWM regulations

 

• Dual input from:

- pH electrode (Glass or Antimony)

- ORP electrode

 

• Input from Pt100 3 wires

• pH/mV/Temperature readout

• Dual filter software

• Operating mode: automatic and manual

• Calibration parameters display

• Set-point and alarm conditions display

• Automatic or manual temperature compensation

 

• Dual isolated output:

- 0/20 mA or 4/20 mA selectable

- pH/ORP/°C selectable

 

• Dual set-points (pH/ORP selectable) with selectable action:

- ON/OFF

- PFM proportional Pulse Frequency Modulation

- PWM proportional Pulse Width Modulation

with hysteresis, delay and min/max programmable

functions

 

• Continuous/flashing alarm

• Min/max and set-points timing alarm relay

• Autoclean relay

 

• EEPROM parameters storage

• Automatic overload protection and reset

• Extractable terminal blocks

• 96X96 (1/4” DIN) housing

 

 

Specifications

 

Sensor type

Glass pH/Antimony pH/ ORP

 

Glass electrode

Zero: 0.0 mV at pH 7 ±2 pH

Slope: 59.16 mV/pH 25 °C 80/110 %

 

Antimony electrode

Zero: -325 mV at pH 7 ±2 pH

Slope: 50 mV/pH 25 °C 70/140 %

 

ORP electrode

Zero adjustment: ±1000 mV

Sens. adjustment: 80/110 %

 

Input scales

* pH: 0.00/14.00 ±0.01 pH

* ORP: -1000/+1000 mV ±1 mV

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

 

Temperature

Input: RTD Pt100 2/3 wires connection

Measuring and compensation range: -10/+110 °C

Zero adjustment: ±2 °C

 

Set point A and B

* ON/OFF action 0.00/14.00 pH -1000/1000 mV

Hysteresis: 0.00/1.50 pH 0/150 mV

Delay: 0.0/99.9 s

* Function: Min/Max

  

PFM action

Proportional band: 0.00/1.50 pH 0/150 mV

Pulse frequency: 0/120 pulse/min

* Function: Min/Max

 

PWM action

Proportional band: 0.00/1.50 pH 0/150 mV

Pulse Period: 0/99.9 sec

* Function: Min/Max

 

Relay contacts

SPDT 220 V 5 A (Resistive load)

 

Analog output N° 1 and N° 2

* Input corresponding to the analog output : pH/mV/°C

* Output range: 0-20/4-20 mA (it can be made to represent any

segment of the measuring scale)

 

Options

091.701                      RS 232 isolated output.

The output sends the data (pH, mV, °C) to the

serial port of the computer.

091.404                      24 Vac power supply

091.4143                   9/36 VDC power supply

 

 

You are here: Home Products Process Control (Analytical) Analyzer pH 7685.010 (Dual channel pH & ORP Microprocessor Based With Alphanumeric Display)