Mini float switches with ATEX approval are suitable for use in explosive media and environments according to Directive 2014/34/EU. Mini float switches are passive devices and do not require a power supply.
All standard ATEX devices are offered for a temperature range of -20°C to +105°C in the medium, or -20°C to 70°C above process connection. UniEx.M mini float switches are manufactured according to customer requirements and can therefore be individually configured and used for a wide range of applications.
Simply configure and request UniEx.M now without obligation or arrange a consultation appointment!
Mini float switch in combination with temperature switch/sensor
Optionally, we equip the UniEx.M series devices with temperature switches/sensors. Both temperature switches, which open or close at a desired temperature, and temperature sensors, such as PT100/PT1000, can be combined with the mini-float switch.
| ATEX certification |
BVS 21 ATEX ZQS/E377 Production Quality Assurance Notification |
| Applied standards |
EN IEC 60079-0:2018 General requirements |
| ATEX marking |
CE 0158 |
| Electrical connection |
aluminium housing, stainless steel housing, plug-type connector, sheathed cable |
| Process connection |
thread, flange | For details please see data sheet UniEx.M |
| Tube |
ø 8 mm, material stainless steel 1.4571 | further materials on demand |
| Tube length |
according to specification | max. 1500 mm |
| Float |
ø 27 x 31 mm cylinder, material stainless steel 1.4571 |
| Reed contacts |
max. 3 normally open/ normally closed contacts or change-over contacts (without temperature switch or PT100/PT1000) |
| Switching capacity |
30V / 100mA – Ex barrier mandatory! |
| Pressure |
max. 6 bar |
| Protection rating |
IP 65 |
| Operating temperature |
-20°C to 105°C in medium, -20°C to 70°C above mounting |
| Temperature switch |
in combination with max. 2 switching contacts n.o. / n.c. contact or change over contact |
| PT100 / PT1000 |
in combination with max. 2 switching contacts n.o. / n.c. contact or change over contact |
II 1/2G Ex ia IIC T3...T6 Ga/Gb
Optional: temperature switch / temperature sensor
| Temperature switch |
Bi-Metal |
| Switching function |
Öffner/Schließer |
| Accuracy |
± 5 °C, smaller tolerances on demand | reset-temperature = Temp.-switching point - 30°C ± 15 °C |
| Number of contacts |
max. 2 temperature switches |
| Switching capacity |
30 V / 100 mA |
| Temperature sensor | platinum resistor PT100 / PT1000 according DIN EN 60751, class B |
| Nominal resistance |
PT100: 100 Ohm | PT1000: 1000 Ohm |
| Temperature coefficient |
0,00385 |
| Tolerance class |
DIN EN 60751, class B |
| Self-heating |
PT100: 0,4 K/mW | PT1000: 0,2 K/mW |
| Long-term stability after 1000h at 150°C |
R0 < 0,06 % |
For further technical features and details as well as the ordering code, please see data sheet UniEx.M.
- Level measurement in many liquid media, e. g. water, oil, fuel
- Large field of application due to the proven functional principle:
Monitoring of processes, predetermined levels as well as pumps and level controls - Chemical industry, petrochemical industry, mechanical engineering, shipbuilding industry, offshore facilities, energy plants and others
- areas of application are, for example, barrier pressure vessels, agitators or printing machines
- Temperature range from -20°C to 105°C in medium, -20°C to 70°C above mounting
- High reliability and long life span
- The mini float switch may only be operated with certified intrinsically safe circuits with the permissible maximum values.
- The device must be included in the periodic pressure/safety test of the container.
- The mini float switch must be electrically connected to the equipotential bonding system of the plan
