Alarm and Remote Monitoring Devices
Alarm and remote monitoring devices turn level information from tanks and boilers into an on-site audible and visual warning or a signal sent to a remote control room. They make sure overflow, dry running and leaks are not missed.
The group includes a water alarm detector that senses flooding and leaks, a liquid level relay that converts electrode signals into relay outputs, and solutions that transfer level as 4–20 mA to a PLC, SCADA or building automation. Selection depends on the output of the level sensor used.
Main Applications
- Flood warning in pump rooms
- Tank overflow and low level alarms
- Monitoring boiler level from the control room
- Connecting remote site tanks to SCADA
- Level data to building automation
Technical Data
| Function | Level alarm and remote monitoring |
|---|---|
| Water alarm detector | Detects water on the floor and warns (product range) |
| Liquid level relay | Electrode input, adjustable sensitivity, 110–230 V AC (product range) |
| Analogue transfer | 4–20 mA or 0–10 V (with converter) |
| Relay output | Potential-free contact (by model) |
| Warning | Audible and visual (by model) |
| Supply | By model |
Material Options
| Part | Function |
|---|---|
| Water alarm detector | Senses water or leaks on the floor |
| Liquid level relay | Turns electrode signal into an alarm |
| Signal converter | Converts level to 4–20 mA or 0–10 V |
| Audible-visual warning | Gives an on-site alert |
Which material? For remote monitoring the signal cable should be shielded and alarm contacts chosen to suit the control system; an independent second detection point is recommended for critical alarms.
Advantages
Early Warning
- Overflow and leaks reported instantly
Remote Visibility
- Monitoring from the control room
Standard Signal
- 4–20 mA and relay
Adds to Existing Sensors
- Works with electrodes and switches
Construction and Design Features
- Floor or tank type detector
- Level relay and signal converter
- Relay and analogue output terminals
- Audible-visual warning element (by model)
Write the points to monitor, existing sensors and the system to connect (panel, PLC, SCADA); we will choose alarm and monitoring devices together.
How to Choose?
- Set the alarm pointsList overflow, low level and leak points.
- Check the sensor outputConfirm whether the sensor gives a contact, electrode or analogue output.
- Choose the target systemDecide panel, PLC or SCADA connection.
- Plan redundancyAdd a second detection point for critical alarms.
Complementary Products
Why ORFA?
Other Level Control Devices
Glass Tube Level Gauge
Glass tube level gauges allow the liquid level inside a tank to be seen directly through a transparent glass tube.
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Electric Level Float Switches
Electric level float switches float with the liquid level, change contact and operate a pump or alarm.
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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.
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Boiler Proportional Level Controllers
Boiler proportional level controllers continuously measure the water level in steam boilers and adjust the feed water proportionally.
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Boiler Level Switches
Boiler level switches detect low and high water levels in steam boilers and control the burner, pump or alarm.
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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.
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Magnetic Level Indicators
Magnetic level indicators show the tank level by transferring the movement of a magnetic float to external indicator flaps.
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Magnetic Level Transmitter
Magnetic level transmitters convert the position of a magnetic float into a continuous electrical signal.
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Stainless Steel Level Switch
Stainless steel level switches are float level switches with stainless steel bodies suitable for corrosive and hot liquids.
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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.
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Reflex Glass Level Gauges
Reflex glass level gauges show the liquid level clearly in steam boilers and pressure vessels.
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Level Indicators
Level indicators allow the liquid level in tanks and vessels to be monitored on site.
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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.
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Liquid Level Electrodes
Liquid level electrodes detect the level of conductive liquids by electrode contact and send a signal to the level relay.
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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.
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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
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