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IDS pH electrodes

Digital IDS pH electrodes
WTW sensors digital IDS pH electrodes SenTix® 940
WTW sensors digital IDS pH electrodes SenTix® 945
WTW sensors digital IDS pH electrodes SenTix® 950
WTW sensors digital IDS pH electrode SenTix® Micro 900
WTW sensors digital IDS pH electrode SenTix® SpT 900
WTW sensors digital IDS pH electrode SenTix® HWT 900
WTW sensors digital IDS pH electrodes SenTix® 980
WTW sensors digital IDS pH electrodes SenTix® Micro 900P

Digital measurement of pH with built-in electrode quality monitoring - usable in all areas of lab and field measurement

  • 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

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.

Variations

Model Description Order no.
SenTix® 940 Low-maintenance IDS pH gel electrode, 1,5 m fixed cable 103740
SenTix® 940-3 Like above, but with a 3 m cable 103741
SenTix® 945 Low-maintenance IDS pH gel electrode with glass shaft and three diaphragms 103743
SenTix® 950 IDS electrode with 3 mol/l KCl, plastic shaft 103750
SenTix® Micro 900 IDS micro pH electrode with platinum diaphragm 103751
SenTix® Sp-T 900 IDS insertion electrode with polymer electrolyte 103752
SenTix® HW-T 900 IDS pH electrode with mit adjustable flow gap diaphragm 103753
SenTix® 980 IDS electrode with 3 mol/l KCl, glass shaft, platinum diaphragm 103780

Technical Data

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: 2.000 … 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

Accessories

Model Description Order no.
AS/IDS-1.5 Connecting cable for MPP IDS as well as plug head sensors, length 1.5 m 903850
AS/IDS-3 Like above, 3 m 903851
AS/IDS-6 Like above, 6 m 903852
AS/IDS-10 Like above, 10 m 903853
AS/IDS-15 Like above, 15 m 903854
AS/IDS-20 Like above, 20 m 903855
AS/IDS-25 Like above, 25 m 903856
AS/IDS-40 Like above, 40 m 903857
AS/IDS-60 Like above, 60 m 903858
AS/IDS-100 Like above, 100 m 903859
A 925-P Replacement head with existing protective basket 903838
A 925-P/K Arming for IDS –P sensors with protective basket made of POM 903839
A 925-P/S Arming for IDS –P sensors with protective basket made of stainless steel 903840
A pHLab/K Plastic arming for SenTix® IDS pH electrodes 903841
D 3Sen Flow vessel for field measurements 903842
pH cap Replacement watering cap for SenTix® pH electrodes (12 mm shaft) 108065

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