Liquid Level Electrodes
A liquid level electrode is a stainless steel rod sensor that closes a circuit through a level relay when it touches a conductive liquid. With no moving parts it provides reliable point level detection even in tanks with scale, foam or vibration.
The electrodes come with PTFE-insulated stainless rods and R 3/8″ connection in socket, cable and high-pressure models. The store range also includes level alarm electrodes with ½” connection in 1000, 1500 and 2000 mm lengths.
Main Applications
- Steam boilers and hot water tanks
- Condensate and feed water tanks
- Water and booster tanks
- Pump dry-run protection
- Overflow and low level alarms
Technical Data
| Measuring principle | Conductivity; circuit closes when the electrode touches liquid |
|---|---|
| Electrode | Stainless steel, PTFE insulated |
| Mechanical connection | R 3/8″ (datasheet); ½” options (product range) |
| Socket model | 160 °C, 16 bar, DIN 43650C socket |
| Cable model | 210 °C, 13 bar |
| High-pressure model | 220 °C, 30 bar |
| Number of electrodes | Single electrode (datasheet); several for multiple points |
| Stock lengths | 1000, 1500, 2000 mm (product range) |
| Medium requirement | Conductive liquids |
Material Options
| Part | Socket | Cable | High pressure |
|---|---|---|---|
| Electrode | Stainless steel | Stainless steel | Stainless steel |
| Insulation | PTFE | PTFE | PTFE |
| Limit | 160 °C / 16 bar | 210 °C / 13 bar | 220 °C / 30 bar |
| Electrical connection | DIN 43650C socket | Cable | Cable |
Which material? Electrodes work only in conductive liquids; for low-conductivity media such as demineralised water, oil and fuel, capacitive or float sensors should be chosen. The electrode is used with a separate level relay.
Advantages
No Moving Parts
- Unaffected by scale and vibration
High Temperature
- Up to 220 °C
High Pressure
- 30 bar model
Cut to Length
- Level point set by length
Construction and Design Features
- PTFE-insulated stainless electrode rod
- Stainless threaded connection body
- Socket or cable outlet
- Connection to a separate level relay
Write the tank type, temperature-pressure and level points; we will select electrode length and relay together.
How to Choose?
- Check the liquidConfirm the liquid is conductive.
- Choose the modelPick socket, cable or high-pressure type by temperature and pressure.
- Set the lengthCalculate the electrode length for each level point.
- Add the relayPair the electrode with a suitable level relay.
Complementary Products
Why ORFA?
Other Level Control Devices
Alarm and Remote Monitoring Devices
Alarm and remote monitoring devices report the level status in tanks and wells by audible, visual or remote notification.
Details →
Glass Tube Level Gauge
Glass tube level gauges allow the liquid level inside a tank to be seen directly through a transparent glass tube.
Details →
Electric Level Float Switches
Electric level float switches float with the liquid level, change contact and operate a pump or alarm.
Details →
Hydrostatic Level Transmitters
Hydrostatic level transmitters measure level from the pressure of the liquid column and provide a continuous signal.
Details →Capacitive Level Sensors
Capacitive level sensors detect the level of liquids and solids by changes in capacitance.
Details →Solids Level Switches
Solids level switches detect the level of powder and granular materials in silos and bunkers.
Details →
Boiler Proportional Level Controllers
Boiler proportional level controllers continuously measure the water level in steam boilers and adjust the feed water proportionally.
Details →
Boiler Level Switches
Boiler level switches detect low and high water levels in steam boilers and control the burner, pump or alarm.
Details →
Boiler Feed Water Level Controls
Boiler feed water level controls start and stop the feed pump according to the water level in the steam boiler.
Details →
Magnetic Level Indicators
Magnetic level indicators show the tank level by transferring the movement of a magnetic float to external indicator flaps.
Details →
Magnetic Level Transmitter
Magnetic level transmitters convert the position of a magnetic float into a continuous electrical signal.
Details →
Stainless Steel Level Switch
Stainless steel level switches are float level switches with stainless steel bodies suitable for corrosive and hot liquids.
Details →
Plastic Level Switches
Plastic level switches are economical float switches used in water and mild chemical tanks.
Details →Radar Level Transmitters
Radar level transmitters measure the level of liquids and solids without contact and provide a continuous signal.
Details →
Reflex Glass Level Gauges
Reflex glass level gauges show the liquid level clearly in steam boilers and pressure vessels.
Details →
Level Indicators
Level indicators allow the liquid level in tanks and vessels to be monitored on site.
Details →
Level Control Panels and Sensors
Level control panels and sensors are control systems that automatically start and stop pumps according to the level in tanks and wells.
Details →
Float Level Switches
Float level switches change contact by means of a float moving with the liquid level and control a pump or alarm.
Details →Float Valves
Float valves open when the water level in a tank drops and close when it is full, keeping the level mechanically.
Details →
Tank Level Switches
Tank level switches signal at set levels in storage tanks to control filling, emptying and alarms.
Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.