SENSOLUTION™ PH600/762

Fluoride Probe Assembly

The pH600/762 fluoride probe assembly is a loop-powered, isolated fluoride sensor with all power being supplied from the two-wire current loop connection. Isolation enables the probe to be at a potential relative to ground without affecting the integrity of the measurement. The two-wire connection eliminates the requirement of a separate supply in addition to the loop supply voltage.


Features:


  • Temperature-compensated measurement

  • Two-wire field mounted transmitter – suitable for multiple-loop installations with a central controller

  • Isolated 4-20mA signal

  • Simple pushbutton operation

  • Tough IP65 die-cast Aluminium enclosure

  • Plug and socket connectors for easy installation and maintenance

  • Tool-free operation – no dip-switches or potentiometers


With a Model 762 probe assembly and electrodes, the pH600 transmitter becomes a complete fluoride/RmV sensing unit. The pH600 transmitters include all the circuitry necessary for the measurement and transmission of an isolated 4-20mA signal, which is then linearised in. All the transmitter’s functions are accessible through the pushbutton interface – there are no potentiometers or dip-switches. Calibration of the signal is accomplished using a one-point offset to grab. The pH600 can also temperature compensate readings using a 100Ω TC element.


The Model 762 assembly is manufactured from chemically resistant polypropylene and has spaces for two PG13.5 electrodes – an industrial fluoride ISE electrode and glass temperature compensator. The reference is a double-junction arrangement with a large gel reservoir giving excellent stability in tough applications.

Tecnical Specifications:


Fluoride (ppm)

Range 

0.1ppm to 100.0ppm

Resolution 

0.1ppm

Accuracy 

±0.1ppm


RmV

Range 

50mV to -186mV

Resolution 

1mV

Accuracy 

±1mV


General

Temperature Range 

-10°C to 110°C

Resolution 

0.1°C

Accuracy 

±0.5°C

Resolution 

1mV

Accuracy 

±2mV

Temperature Compensation 

Auto (Pt100) / Manual (0° to 100°)

Number of Calibration Points 

1 (offset to grab sample)

Inputs 

Asymmetrical/Symmetrical

Outputs 

4.0mA to 20.0mA

Under-range Current Output 

3.8mA/4mA (selectable)

Over-range Current Output 

3.8mA/20mA (selectable)

Hold Current Output 

22mA/Last Value (selectable)

Display 

Custom LCD

Power Requirements 

12V to 24V dc

Load Resistance 

600 ohm Max

Ordering Information:


500/0060 Complete Fluoride probe assembly: pH600, 762 holder, electrodes and 40cm wand


For use with:

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Spares:

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Part of the SDI group

Astles Control Systems Ltd

B3 Regent Park, Summerlys Road,

Princes Risborough, Bucks, HP27 9LE

t: 01844 273301

e: web.sales@astles.co.uk

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