IDS pH Electrodes-WTW/Xylem

更新时间：2026-10-09 浏览次数：23

IDS pH Electrodes

pH measurement covers a wide variety of applications, from routine analysis of aqueous samples to specialized measurement in challenging media such as strong acids, strong alkalis, suspensions, emulsions and non-aqueous matrices. Samples can range from fully liquid to solid consistency. Measurements can be performed in sheltered laboratory environments or outdoors under harsh field conditions. For all these diverse measurement scenarios, the IDS electrode portfolio provides suitable solutions.

IDS pH Electrodes for Water, Wastewater and Other Aqueous Samples

· SenTix® 940(-P): Low-maintenance pH electrode with robust plastic shaft and gel electrolyte

· SenTix® 945(-P): Low-maintenance, fast-response pH electrode with gel reference system and three ceramic junctions for laboratory use

· SenTix® 950(-P): Robust, liquid-filled electrode with plastic shaft and ceramic junctions for portable field measurement

· SenTix® 980(-P): Precision pH electrode with platinum wire junction and glass shaft for laboratory use

· SensoLyt® 900-P: Pressure-resistant pH electrode with polymer electrolyte for depth measurement

pH Electrodes for Special Samples (Suspensions, Emulsions, High and Low Ion Concentrations)

· SenTix® HW-T 900(-P): Precision pH electrode with liquid electrolyte; adjustable split ring junction

pH Measurement in Semi-solid or Viscous Samples

· SenTix® Sp-T 900(-P): pH electrode with spear-shaped membrane for penetration measurements

pH Measurement in Small Vessels

· SenTix® Micro 900(-P): Micro pH electrode with 5 mm shaft diameter and built-in temperature probe

Core advantages of IDS sensors

1. Secure measurement values by means of signal processing inside the sensor

2. Easy electrode exchange thanks to calibration data stored in the sensor

3. Sensor quality monitoring through QSC function

Technical Specifications and Order Information

Low maintenance IDS pH electrodes with gel reference system

Parameter	SenTix® 940	SenTix® 940-3	SenTix® 940-P	SenTix® 945	SenTix® 945-P
Item Number	103740	103741	103760	103743	103764
Measuring range pH	0 … 14 pH	0 … 14 pH	0 … 14 pH	0 … 14 pH	0 … 14 pH
Temperature range	0 … +80 °C	0 … +80 °C	0 … +80 °C	0 … +80 °C	0 … +80 °C
Reference system	Gel	Gel	Gel	Gel	Gel
Membrane shape	Cylinder	Cylinder	Ball	Cylinder	Cylinder
Junction	Fibre	Fibre	Fibre	3 × Ceramic	3 × Ceramic
Shaft material	Noryl	Noryl	Noryl	Glass	Glass
Shaft length	120 mm	120 mm	120 mm	120 mm	120 mm
Shaft diameter	12 mm	12 mm	12 mm	12 mm	12 mm
Temperature probe	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm
Cable length	1.5 m	3 m	1.5 … 100 m, wireless	1.5 m	1.5 … 100 m, wireless

Precision IDS pH electrodes with 3 mol/l KCl liquid reference

Parameter	SenTix® 950	SenTix® 950-P	SenTix® 980	SenTix® 980-P
Item Number	103750	103761	103780	103762
Measuring range pH	0 … 14 pH	0 … 14 pH	0 … 14 pH	0 … 14 pH
Temperature range	0 … +80 °C	0 … +80 °C	0 … +100 °C	0 … +100 °C
Reference system	KCl 3 mol/l Ag+ free	KCl 3 mol/l Ag+ free	KCl 3 mol/l Ag+ free	KCl 3 mol/l Ag+ free
Membrane shape	Cylinder	Cylinder	Cylinder	Cone
Diaphragm	Ceramic wire	Ceramic wire	Platinum wire	Platinum wire
Shaft material	PPE	PPE	Glass	Glass
Shaft length	120 mm	120 mm	120 mm	120 mm
Shaft diameter	12 mm	12 mm	12 mm	12 mm
Temperature probe	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm
Cable length	1.5 m	1.5 … 100 m, wireless	1.5 m	1.5 … 100 m, wireless

Special IDS-pH electrodes

Parameter	SenTix® Micro 900	SenTix® Micro 900-P	SensoLyt® 900-P	SenTix® HW-T 900	SenTix® HW-T 900-P	SenTix® Sp-T 900	SenTix® Sp-T 900-P
Item Number	103751	103765	103748	103753	103767	103752	103766
Measuring range pH	0 … 14 pH	0 … 14 pH	0 … 12 pH	0 … 14 pH	0 … 14 pH	2 … 13 pH	2 … 13 pH
Temperature range	0 … +100 °C	0 … +100 °C	0 … +60 °C	0 … +60 °C	0 … +60 °C	0 … +80 °C	0 … +80 °C
Reference system	KCl 3 mol/l Ag+ free	KCl 3 mol/l Ag+ free	Polymer	KCl 3 mol/l Ag+ free	KCl 3 mol/l Ag+ free	Polymer	Polymer
Membrane shape	Cylinder	Cylinder	Cylinder	Cylinder	Cylinder	Spear	Spear
Junction	Platinum wire	Platinum wire	Hole	Split ring	Split ring	Hole	Hole
Shaft material	Glass	Glass	Glass	Glass	Glass	Glass	Glass
Shaft length	65/130 mm	65/130 mm	120 mm	170 mm	170 mm	65/25 mm	65/25 mm
Shaft diameter	12/5 mm	12/5 mm	12 mm	12 mm	12 mm	15/5 mm	15/5 mm
Temperature probe	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm	NTC 30 kOhm
Cable length	1.5 m	1.5 … 100 m, wireless	1.5 m	1.5 m

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