pH600 with wand and probe
The pH600 is a microprocessor controlled, loop powered isolated pH transmitter with all power being supplied from the two wire current loop connection. Isolation enables the pH probe to be at a potential relative to ground without affecting the integrity of the pH measurement. The two wire connection eliminates the requirement of a separate supply in addition to the loop supply voltage.
Features
- Temperature-compensated pH or ORP measurement.
- Two-wire field mounted transmitter – suitable for multiple-loop installations with a central controller.
- Local display of pH/ORP and temperature – suitable for use as a stand-alone pH monitor.
- 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.
- Suitable for masthead mounting (as pictured) or wall mounting.
The pH600 two-wire field mounted transmitters, with the appropriate sensors, are designed to continuously measure the pH or ORP in industrial processes. The pH600 transmitters include all the circuitry necessary for the measurement and transmission of an isolated 4-20mA linear signal. All the transmitter’s functions are accessible through the pushbutton interface – there are no potentiometers or dip-switches. Two-point calibration of the signal is accomplished using the standard calibration routine. The pH600 can also temperature compensate pH readings using a 100 ohm TC element.
Dimensions of the pH600 with metal box
Technical Specifications
| pH | |
| Range | 0.00pH to 14.00pH |
| Resolution | 0.01pH |
| Accuracy | ±0.01pH |
| Temperature | |
| Range | -10°C to 110°C |
| Resolution | 0.1°C |
| Accuracy | ±0.5°C |
| Millivolt | |
| Range | -1000mV to 1000mV |
| Resolution | 1mV |
| Accuracy | ±2mV |
| General | |
| Temperature Compensation | Auto (Pt100) / Manual (0° to 100°) |
| Number of Calibration Points | 2 |
| Calibration Buffers | 4.01, 7.00, 10.01 |
| 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 |
Model 762 Probe Assembly
With the addition of a Model 762 probe assembly and electrodes, the pH600 becomes a complete pH sensing unit. The most common usage of the 762 is with a wand, as shown above. Wands are available in lengths of 40, 70 and 100cm, although other lengths are available to special order.
Ordering Information
| 500/0020 | pH600 isolated two-wire pH transmitter |
| 500/0031 | Complete pH monitor: pH600, 762, electrodes and 40cm wand. |
| 500/0032 | Complete pH monitor: pH600, 762, electrodes and 70cm wand. |
| 500/0033 | Complete pH monitor: pH600, 762, electrodes and 100cm wand. |
| 500/0036 | Budget pH monitor: pH600, 425 probe and 40cm wand. |
 pH600 instructions 0.32MB pdf |