WTW SenTix 52 PH Electrode with Liquid Electrolyte and Temperature Sensor, Plastic Shaft, BNC Connector, 1 m Cable, 103652
€276.00
% Manufacturer's RRP: €306.00 9% below manufacturer's RRP
- BNC plug and 4 mm banana plug on a 1 m fixed cable
- Integrated NTC temperature sensor (30 kOhm)
- Refillable KCl electrolyte, 3 mol/l, Ag+-free, ceramic diaphragm
- Polyamide shaft, 120 mm long, 12 mm in diameter
- Measuring range 0 to 14 pH, temperature range 0 to 80 °C
- A dropper bottle for the reference electrolyte is included
Product information "WTW SenTix 52 PH Electrode with Liquid Electrolyte and Temperature Sensor, Plastic Shaft, BNC Connector, 1 m Cable, 103652"
The WTW SenTix 52 has a 1 m fixed cable with a BNC plug and a 4 mm banana plug, as well as a built-in NTC sensor. The shaft is made of plastic, and the electrolyte system is refillable.
Electrolyte and diaphragm
The SenTix 52 is supplied ex-works with a reference electrolyte consisting of 3 mol/l KCl, Ag⁺-free. It flows slowly into the sample via a ceramic diaphragm and can be topped up via the refill port. The dropper bottle for this purpose is supplied with the electrode. This measuring chain does not feature a gel system as found on the SenTix 42. Consequently, the refill port is a maintenance point that must remain open during calibration and measurement.
Shaft, probe and measuring range
The 120 mm long shaft, with a diameter of 12 mm, is made of polyamide. The 30 kOhm NTC sensor is housed within the shaft and enables automatic temperature compensation. Measurements are taken from 0 to 14 pH between 0 and 80 °C with a membrane resistance of less than 1 GΩ. For samples up to 100 °C, the SenTix 82 glass electrode is available, also featuring an NTC sensor, BNC and banana plugs.
The DIN variant in comparison
With all other measurement data being the same, the plastic electrode with a DIN connector is available as the SenTix 51. Which of the two is suitable depends solely on the input on the measuring instrument.
Operation and storage
The wetting cap is removed before measurement and kept for storage. Gas bubbles behind the membrane are removed by shaking. Overnight or for longer periods, the measuring chain is placed in the cap filled with reference electrolyte, and the refill opening is sealed. Storage in a dry environment or in deionised water will cause permanent damage to the electrode. If the cap has dried out, the measuring chain must be left in the reference electrolyte for at least 24 hours.
Typical applications
- Drinking water and mineral water
- Aquarium water and swimming pool water
- Lake water, surface water and seawater
- Fruit juice, vegetable juice and wine
Technical details
| Type | pH electrode with liquid electrolyte and temperature sensor |
| Sensor design | Cylinder |
| Shaft material | Plastic (polyamide) |
| Shaft length / shaft diameter | 120 mm / 12 mm |
| Diaphragm | Ceramic |
| Reference system | KCl 3 mol/l, Ag⁺-free, refillable |
| pH measurement range | 0 to 14 pH |
| Temperature range | 0 to 80 °C |
| Membrane resistance | < 1 GΩ |
| Temperature sensor | NTC 30 kOhm, integrated |
| Connection | 1 m fixed cable with BNC plug and 4 mm banana plug |
| Standards | EU Declaration of Conformity (RoHS Directive 2011/65/EU), WEEE marking |
Scope of delivery
- 1 WTW SenTix 52 pH measuring chain with rinsing cap
- 1 dropper bottle with reference electrolyte for refilling
Individual requirements and procurement service
Reference electrolyte KCl-250 (order no. 109705), pepsin cleaning solution PEP/pH (109648), buffer solutions for calibration and the A pHLab/K plastic reinforcement are available on request. Our procurement service can assist you in choosing between BNC, DIN and other connector types.