Digital IDS pH Electrodes – Liquid Electrolyte
Digital measurement of pH with built-in electrode quality monitoring – usable in all areas of lab and field measurement
pH electrodes are the most frequently used electro-chemical sensors. They are used practically in all areas of lab and field measurement. At the same time, the deliver the most sensitive measuring signals and must be serviced and calibrated at regular intervals.
This is exactly where the concept of IDS sensors comes in. Digital data transfer is safe against interference, allows the use of long cables and permits important additional information such as calibration data and sensor recognition.
WTW offers a wide variety of IDS pH electrodes for field use, all the way to special applications in the lab. The QSC function allows monitoring of the current sensor status with all IDS pH electrodes.
- Safely measured values due to signal processing in the sensor
- Easy electrode replacement thanks to calibration data stored inside sensor
- Sensor quality monitoring by QSC function
| SenTix® | 940/940-3 | 950 | 980 | |
| pH | 0.000 … 14.000 ± 0.004 |
0.000 … 14.000 ± 0.004 |
0.000 … 14.000 ± 0.004 |
|
| mV | – – – | – – – | – – – | |
| Temp. | 0 … 80 °C | 0 … 80 °C | 0 … 100 °C | |
| SenTix® | 945 | Micro 900 | Sp-T 900 | HW-T-900 |
| Measuring range | pH: 0.000 … 14.000 ± 0.002 | pH: 0.000 … 14.000 ± 0.002 | pH: 0.000 … 13.000 ± 0.002 | pH: 0.000 … 14.000 ± 0.002 |
| Area of use | 0 … 80 °C | 0 … 100 °C | 0 … 50 °C | 0 … 60 °C |
| Reference electrolyte | Gel | KCl 3 mol/l | Polymer | KCl 3 mol/l |
| Membrane form | Sphere | Cylinder | Spear | Cylinder |
| Diaphragm | 3 x ceramic | Platinum wire | Hole | Grinding |
| Shaft material | Glass | Glass | Plastic | Glass |
| Shaft length | 120 mm | 70/130 mm | 65/25 mm | 120 mm |
| Shaft diameter | 12 mm | 12/5 mm | 15/5 mm | 12 mm |
| Temperature sensor | NTC 30 kOhm | NTC 30 kOhm | NTC 30 kOhm | NTC 30 kOhm |
| Connecting cable | 1.5 m with digital plug | 0.5 m with digital plug | 0.5 m with digital plug | 0.5 m with digital plug |
