The major feature of the SA probes lies in the integration of the electrode- holder and the signal amplifier/ transmitter so as to offer the following advantages:
- easy installation
- long distance from the control instrument (max output resistance 200 ohms).
- 12 V d.c. power supply
- 4-20 mA output signal
The probes of Sodi Scientifica can accommodate electrodes for measurements of pH, Redox, conductivity and dissolved oxygen. Each measure (Redox excluded) can be temperature-compensated with no need for additional probes or electrodes. The calibration is carried out through the control instrument.
Probes Specifications
 Runoff cell |
 Probe with signal amplifier |
| SA400 | SA700 | SA1000 | |
| Material |
PVC | PVC | PVC |
| Length | 400 mm - 15.7" | 700 mm - 27.5" | 1000 mm - 40" |
| Immersion depth |
200 mm - 7.8" | 600 mm - 23.6" | 900mm - 35.4" |
| Outer diameter |
25mm - 1" | 25mm - 1" | 25mm - 1" |
| Weight | 0,7 kg - 1.54 lb. | 1,2 kg - 2.65 lb. | 1,6 kg - 3.53 lb. |
| Supply | 12÷18 V dc | 12÷18 V dc | 12÷18 V dc |
| Temperature range |
0÷100°C 32-212°F | 0÷100°C 32-212°F | 0÷100°C 32-212°F |
| Uscita | 4÷20mA | 4÷20mA | 4÷20mA |
| Pressione | atmosf. | atmosf. | atmosf. |
| Temperatura esterna | +1 ÷ +50°C 33.8÷122°F | +1 ÷ +50°C 33.8÷122°F | +1 ÷ +50°C 33.8÷122°F |
Electrodes
The electrodes for pH (A series) and Redox (ER series) are of glass- membrane single-tube type. The connector is easy to fit. The electrodes of the conductivity probe are in graphite and make an integral part of the same probe. Special electrodes are available on request. For heavy-duty applications contact our service department.
| PH | RX | µS | O2 | |
| Type | A | ER | C | O |
| Range of mesurament |
0÷14 | -1200 ÷ +1200 mV | 0÷1000µS 0÷2000µS 0÷5000µS 0÷10000µS |
0-15 ppm |
| Operating temperature |
1÷70 °C / 33.8÷158°F | 1÷70 °C / 33.8÷158°F | 1÷70 °C / 33.8÷158°F | 1÷50 °C / 33.8÷122°F |
| Conn. fitting |
Din 19263 | Din 19263 | - | - |
| Ø electrode | 10mm / 0.39" | 10mm / 0.39" | 48mm / 1.8" | 40mm / 1.6" |
| Impedance 20°C / 68°F | 100 MOhm | 100 MOhm | - | 600 Ohm |
Dissolved oxygen characteristics
The novel measuring principle for the determination of dissolved oxygen is based on the three-electrode self-regulating potentiostatic system. The measurement transducers and the O2 electrodes exhibit high accuracy and reliability in addition to being of easy maintenance. The automatic calibration system is quickly and easily performed as the instrument is able to self- calibrating in the atmosphere. The automatic control of the sensor, provided with regeneration indication, improves the operation reliability. In case of damaged or worn out membrane, the instrument generates an alarm. The service life may be up to 5 years. The membrane is rugged and insensitive to pollution. Virtually flow-independent – min. flow 0.005 m/s.
Download brochure
SondeElettrodiIngl_03.pdf
