Water detector SHT 5002

91,60 €

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Level control for tanks, garden ponds, pools, cisterns (2-point controller)
2 different reporting lines for filling, emptying, level, overflow message
Housing for 35 mm standard DIN rail system (DIN EN 502)
adjustable relay e.g. for pump control (emptying or filling the container)
separate relay for overflow signal - with memory function
Combined with mini float switches also suitable for other liquids (e.g. heating oil, diesel, vegetable oil, lubricating oils, distilled water, etc.)

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Discounts for specialist companies & resellers
Personal expert advice (no call center!)
Repair service beyond the statutory warranty

SKU: 300749

Delivery time: 2-3 working days

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Water detector SHT 5002

91,60 €

Quantity

Description
Technical information
Downloads
FAQ - Frequently Asked Questions
Reviews

Scope of delivery
<ul>
<li>SHT 5002</li>
<li>Mounting material</li>
<li>Operating Instructions</li>
</ul>
<h2 data-start="337" data-end="415"><strong data-start="340" data-end="415"> 💧 SHT 5002 – Intelligent level control & overflow detection in one device</strong></h2>
<p data-start="417" data-end="855">The <strong data-start="421" data-end="433">SHT 5002</strong> is more than just a water detector – it's a powerful <strong data-start="494" data-end="551">2-point level controller with an additional overflow warning, ideal for DIN rail mounting in a fuse box or small distribution board. Thanks to two separate detection lines, several functions can be implemented simultaneously: the precise <strong data-start="747" data-end="790">filling or emptying of a container</strong>, as well as independent <strong data-start="813" data-end="854">monitoring for overflow or leakage.</p>

<h3 data-start="862" data-end="908"><strong data-start="866" data-end="908">🛡️ Two reporting lines – double security</strong></h3>
<h4 data-start="910" data-end="959"><strong data-start="915" data-end="959">⚙️ 1. Level control with float switches</strong></h4>
<p data-start="960" data-end="1385">The first detection line handles the actual <strong data-start="1007" data-end="1030">level control: Two miniature float switches define an upper and a lower level in the tank or container. Depending on the desired function – <strong data-start="1159" data-end="1171">filling</strong> or <strong data-start="1177" data-end="1190">emptying</strong> – the device controls a connected pump via a <strong data-start="1246" data-end="1283">potential-free 5 A changeover relay. Switching occurs automatically as soon as the water level reaches one of the specified levels.</p>

<h4 data-start="1387" data-end="1440"><strong data-start="1392" data-end="1440">🚨 2. Overflow detector – independent & reliable</strong></h4>
<p data-start="1441" data-end="1860">The second detection line operates independently of the level control and triggers as soon as water is detected at an additional float switch (i.e., the third one). This allows a potential overflow to be reliably detected, for example, in the event of a pump failure or an unexpected inflow. Here, too, a dedicated relay ensures direct control of signaling devices, alarm systems, or emergency valves.</p>

<h3 data-start="1867" data-end="1924"><strong data-start="1871" data-end="1924">🔁 Filling or emptying? Easily switch between options</strong></h3>
<p data-start="1926" data-end="2076">With a <strong data-start="1936" data-end="1961">simple wire jumper</strong> you can specify whether the system should <strong data-start="2018" data-end="2032">refill</strong> when the water level is low or <strong data-start="2057" data-end="2070">drain</strong> when the water level is too high:</p>

<ul data-start="2078" data-end="2371">
<li data-start="2078" data-end="2212">
<p data-start="2080" data-end="2212"><strong data-start="2080" data-end="2103">Filling function</strong>: If the water level drops below the lower level, the relay activates the pump until the upper level is reached.</p>
</li>
<li data-start="2213" data-end="2371">
<p data-start="2215" data-end="2371"><strong data-start="2215" data-end="2239">Drain function</strong>: If the water level exceeds the upper level, the device starts the pump until the water drops below the lower level again.</p>
</li>
</ul>
<p data-start="2373" data-end="2493">This intelligent control not only saves effort, but also reliably protects against dry running or overfilling.</p>

<h3 data-start="2500" data-end="2550"><strong data-start="2504" data-end="2550">🧪 Ideal for a wide variety of liquids</strong></h3>
<p data-start="2552" data-end="2994">In combination with the robust <strong data-start="2584" data-end="2638">mini float switches from Elektrotechnik Schabus</strong>, the SHT 5002 is also suitable for <strong data-start="2665" data-end="2713">non-conductive or hazardous liquids</strong> – including oils, diesel, or distilled water. Important: While water sensors are more universally applicable, they are less precise and more prone to false alarms – especially in constantly humid environments. For precise cut-off points, we clearly recommend the <strong data-start="2974" data-end="2993">float solution</strong>.</p>

<h3 data-start="3001" data-end="3057"><strong data-start="3005" data-end="3057">🏞️ Flexible applications – from ponds to technical rooms</strong></h3>
<p data-start="3059" data-end="3399">Whether it's a rainwater tank, livestock trough, pool, or machine sump: The SHT 5002 ensures reliable control wherever levels need to be regulated or overflows prevented. Even two completely independent applications simultaneously are possible – e.g., a level controller in a cistern insert and an overflow alarm under a washing machine.</p>

<h3 data-start="3406" data-end="3450"><strong data-start="3410" data-end="3450">💡 Convenient display & reset function</strong></h3>
<p data-start="3452" data-end="3516">Two LEDs clearly indicate the status of both detection lines:</p>

<ul data-start="3518" data-end="3699">
<li data-start="3518" data-end="3603">
<p data-start="3520" data-end="3603"><strong data-start="3520" data-end="3541">Green LED (S1–S2)</strong>: lights up when the pump is deactivated, flashes when the pump is active</p>
</li>
<li data-start="3604" data-end="3699">
<p data-start="3606" data-end="3699"><strong data-start="3606" data-end="3630">Red LED (S3)</strong>: flashes when water is detected, lights up continuously after manual reset</p>
</li>
</ul>
<p data-start="3701" data-end="3889">The integrated <strong data-start="3717" data-end="3759">storage function for overflow messages</strong> ensures that alarm messages are retained until they are specifically acknowledged – ideal for safety-critical applications.</p>

<h3 data-start="3896" data-end="3953"><strong data-start="3900" data-end="3953">🪝 Float instead of sensor? No problem installing!</strong></h3>
<p data-start="3955" data-end="4324">Would you prefer to use sensors because you can't drill into your tank? Understandable – but we have a better solution: our <a href="https://www.elektrotechnik-schabus.de/warnsysteme-wasser/haenge-schwimmerschalter-kunststoff"><strong data-start="4108" data-end="4135">suspension float switch (item 200950)</strong></a> with counterweight. This is simply inserted from above, always remains reliably vertical in the medium, and can be continuously adjusted in height using the included PG screw connection.</p>
 

WEEE NO.: DE91394868

Operating voltage	12-16V DC / 0.5A, 230V AC / 50-60Hz
Functional area	0°C / +40°C
Protection class	IP20
Dimensions (W x W x D)	57x72x90 mm 4 HP DIN rail
Power consumption	approx. 3 W
Connection	Sensor: 2x level control, 2x overflow
Relay contact	2 potential-free changeover relays, Relay 1 (level) max. 5 A / 230 V~, Relay 2 (overflow) max. 5 A / 230 V~, changeover contact NC / NO
Line	2 x 0.14 mm², up to 50 m possible
Assembly	35 mm, DIN EN 5002 Rail, DIN rail device
Switching point	Sensor: RS <80 KΩ
Control voltage	Sensor: 2.5 V AC

Instructions for use

300749-AN SHT 5002 Water detector level control

CE declaration / EU declaration of conformity

[Download not found.]

Connection example (drinking water refill for rainwater cisterns)

300749-MZ-SHT5002-Drinking water refill

Connection example (water replenishment for pool or pond)

300749-MZ-SHT5002-Water refill for pool or pond

FAQ - Frequently Asked Questions

🔄What is the difference between “filling” and “emptying” on the SHT 5002?

The SHT 5002 can either automatically refill orpump out water, depending on how the wire jumper is set on the device:

In“Fill” mode, the connected pump activates when the water level falls below the lower level and switches off as soon as the upper level is reached.
In“Drain” mode,the pump starts when the upper level is exceeded and stops again when the water falls below the lower level.

This flexible setting makes the SHT 5002 ideal for applications such as cisterns, tanks, ponds or even technical rooms.

⚙️What is a 2-point level controller and how does it work?

A 2-point level controller like the SHT 5002 operates with two defined switching points:the lower and upper levels.
Depending on whether the system is filling or emptying, the system automatically switches between these points. Theconnected pump always operates only within the defined range, ensuring safe and energy-efficient operation.

💧Which sensors can I connect to the SHT 5002?

For level control (S1 & S2) we expressly recommend themini float switches from Elektrotechnik Schabus, as they

precise switching,
are hardly susceptible to failure,
and can also be used in liquids such as diesel or oil.

Water sensorsor an additional float switch are possible for theoverflow alarm (S3). Water sensors are particularly suitable forregularly dry surfaces(eg, the floor in front of the washing machine), while float switches are better suited forlevel monitoring.

🧪Can I also use the SHT 5002 with oil, diesel or distilled water?

Yes – if you usemini float switches. These operate mechanically and are independent of the liquid's electrical conductivity. This makes the SHT 5002 suitablefor many non-conductive or critical media, such as:

Diesel, heating oil, lubricating oil
distilled water
Cleaning agents or chemicals (if compatible with the float switch material)

🪝I don't want to drill into my tank – is there any way to do it without?

Yes, the suspended float switch (item 200950)from Elektrotechnik Schabus is designed for this purpose.
It is simplysuspended from above, and the flanged weight keeps it vertical in the water at all times. The includedPG screw connection allows for continuous height adjustment, eliminating the need for permanent installation – ideal for tanks that cannot be drilled (eg, enameled drinking troughs in agriculture).

🚨How does the SHT 5002 overflow message work?

The second detection line (sensor S3, relay K2) detectswater outside the specified range– eg, in the event of a pump failure, a leak, or an overflow. As soon as water is detected:

the red LED flashes,
therelay K2 drops out,
and connected signaling devices (eg horn, valve, smart module) are activated.

Optionally, the overflow message can also besaved and manually acknowledged– ideal for safety-relevant applications.

🔌What is the maximum distance between the sensor and the device?

For reliable operation, a maximumcable length of 50 meters per input(S1, S2, or S3) must be maintained.
Longer cable runs can lead to signal interference or malfunctions – therefore, ensure appropriate cable lengths and clean routing.

💡What do the LEDs on the SHT 5002 indicate?

Green LED (S1–S2):
Red LED (S3):

The LEDs ensure quick and easystatus control at a glance.

Description

WEEE NO.: DE91394868

Technical information

Operating voltage	12-16V DC / 0.5A, 230V AC / 50-60Hz
Functional area	0°C / +40°C
Protection class	IP20
Dimensions (W x W x D)	57x72x90 mm 4 HP DIN rail
Power consumption	approx. 3 W
Connection	Sensor: 2x level control, 2x overflow
Relay contact	2 potential-free changeover relays, Relay 1 (level) max. 5 A / 230 V~, Relay 2 (overflow) max. 5 A / 230 V~, changeover contact NC / NO
Line	2 x 0.14 mm², up to 50 m possible
Assembly	35 mm, DIN EN 5002 Rail, DIN rail device
Switching point	Sensor: RS <80 KΩ
Control voltage	Sensor: 2.5 V AC

Downloads

Instructions for use

300749-AN SHT 5002 Water detector level control

CE declaration / EU declaration of conformity

[Download not found.]

Connection example (drinking water refill for rainwater cisterns)

300749-MZ-SHT5002-Drinking water refill

Connection example (water replenishment for pool or pond)

300749-MZ-SHT5002-Water refill for pool or pond

Connection examples

FAQ - Frequently Asked Questions

🔄What is the difference between “filling” and “emptying” on the SHT 5002?

The SHT 5002 can either automatically refill orpump out water, depending on how the wire jumper is set on the device:

In“Fill” mode, the connected pump activates when the water level falls below the lower level and switches off as soon as the upper level is reached.
In“Drain” mode,the pump starts when the upper level is exceeded and stops again when the water falls below the lower level.

This flexible setting makes the SHT 5002 ideal for applications such as cisterns, tanks, ponds or even technical rooms.

⚙️What is a 2-point level controller and how does it work?

💧Which sensors can I connect to the SHT 5002?

For level control (S1 & S2) we expressly recommend themini float switches from Elektrotechnik Schabus, as they

precise switching,
are hardly susceptible to failure,
and can also be used in liquids such as diesel or oil.

🧪Can I also use the SHT 5002 with oil, diesel or distilled water?

Diesel, heating oil, lubricating oil
distilled water
Cleaning agents or chemicals (if compatible with the float switch material)

🪝I don't want to drill into my tank – is there any way to do it without?

🚨How does the SHT 5002 overflow message work?

The second detection line (sensor S3, relay K2) detectswater outside the specified range– eg, in the event of a pump failure, a leak, or an overflow. As soon as water is detected:

the red LED flashes,
therelay K2 drops out,
and connected signaling devices (eg horn, valve, smart module) are activated.

Optionally, the overflow message can also besaved and manually acknowledged– ideal for safety-relevant applications.

🔌What is the maximum distance between the sensor and the device?

💡What do the LEDs on the SHT 5002 indicate?

Green LED (S1–S2):
Red LED (S3):

The LEDs ensure quick and easystatus control at a glance.

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Water detector SHT 5002