Analogue level measurement reed chain with ATEX approval

UniEx.ANM_analogue level measurement with ATEX approvalThe UniEx.ANM series level measuring devices with ATEX approval are suitable for use in explosive media and environments according to Directive 2014/34/EU. The level meters 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.ANM level measuring devices 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.ANM now without obligation or arrange a consultation appointment!

  ATEX certification

BVS 21 ATEX ZQS/E377 Production Quality Assurance Notification
BVS 15 ATEX E 086 X EU-Type Examination Certificate

  Applied standards

EN IEC 60079-0:2018 General requirements
EN 60079-11:2012 Intrinsic Safety “i”
EN 60079-26:2015 Equipment protection level (EPL) Ga

  ATEX marking

CE 0158 2000px EX Logo II 1/2G Ex ia IIC T3...T6 Ga/Gb
CE 0158 2000px EX Logo II 1/- D Ex ia IIIC T* °C Da
CE 0158 2000px EX Logo II 1 D Ex ia IIIC T* °C Da

  Electrical connection

aluminium housing, stainless steel housing, plug-type connector, sheathed cable
for details please see data sheet UniEx.ANM

  Process connection

thread, flange | For details please see data sheet UniEx.ANM


ø 8 mm with resolution 5 mm, material stainless steel 1.4571
ø 12 mm with resolution 2,5mm - 10 mm, material stainless steel 1.4571

  Tube length

according to specification | max. 3000 mm


ø 45 x 52 mm cylinder, material stainless steel 1.4571
ø 52 mm bullet, material stainless steel 1.4571

ø 27 x 31 mm cylinder, material stainless steel 1.4571

  Analogue output

potifunction, via transmitter (Ex barrier) 4 - 20 mA
measuring range – see sketch on page 1 data sheet UniEx.ANM


2,5 mm, 5,0 mm or 10,0 mm


max. 6 bar

  Protection rating

IP 65

  Operating temperature

-20°C to 105°C in medium, -20°C to 70°C above mounting

 Optional: Temperature sensor  – only possible in tube with Ø12 mm

  Temperature sensor platinum resistor PT100 / PT1000 according DIN EN 60751, class B
  Nominal resistance
PT100: 100 Ohm | PT1000: 1000 Ohm
  Temperature coefficient
  Tolerance class
DIN EN 60751, class B
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.ANM.

  • Level Measurement
    The sensor continuously or discretely measures the level in a tank, container, or other process equipment. It determines the height of the medium and provides a resistance signal to the signal amplifier. This amplifier converts the resistance signal into an electrical signal.
  • Monitoring and Control
    The sensor monitors the level and can transmit this information to control systems or process control systems. Due to the analog output signal generated by the signal amplifier, they can be used in control loops to automatically regulate the level.

  • Alerting
    When certain level limits are reached, the sensor can trigger alarms to inform operators or safety systems of critical conditions. This enables timely response and prevents potential hazardous situations.

  • Process Control
    Through continuous level monitoring, the sensor enables efficient process control. For example, it can control the inflow or outflow of liquids to ensure an optimal level or controlled emptying.

  • The device 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 device must be electrically connected to the equipotential bonding system of the plant.

Analog ATEX level sensors are used in various industries where potentially explosive atmospheres can occur. Here are some examples of industries where such products are used:

  • Chemical Industry
    In the chemical industry, ATEX level sensors are employed to monitor the level of chemicals in tanks, containers, or reactors. This allows for precise dosing, storage, and control of chemical substances.
  • Oil and Gas Industry
    ATEX level sensors are used in refinery facilities, oil and gas storage sites, offshore platforms, and petrochemical plants. They monitor the level of oil, fuels, gases, or chemicals in tanks and support the safe handling and storage of these substances.
  • Mining and Mineral Processing
    In mines, quarries, and other mining or mineral processing operations, ATEX level sensors are utilized to monitor various liquid levels, such as oil.
  • Pharmaceutical Industry
    In pharmaceutical production, ATEX level sensors are used to monitor the level of liquids or chemical solutions in production vessels or reactors. This allows for precise dosing and process control in accordance with the industry's stringent quality standards.

Get an individual consultation!

Vertriebsleitung Matthias Kuhn

Together we will find a solution that precisely suits you and your needs.
Call me for your individual consultation or request a callback!

Matthias Kuhn
phone: +49 (0) 73 89-90 92-22
mail: mkuhn(at)

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Engler Steuer- und Messtechnik GmbH & Co. KG
Lange Straße 151
D-72535 Heroldstatt

Telefon +49 7389 / 9092-0
Fax +49 7389 / 9092-40

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Industry sectors

  • Hydraulic units
  • Chemical industry
  • Dosing filling equipment
  • Electroplating
  • Food industry
  • Machinery and equipment construction
  • Medical
  • Overview industries

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