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Lm-therm climate control

Lm-therm climate control

Product catalog summary

Overview: The document provides a comprehensive overview of the products and services offered by Achter Elektronik AG and its subsidiary, Lm-therm GmbH, focusing on industrial climate control solutions. It includes historical context, product specifications, and technical guidelines for heating and cooling systems in control cabinets.

Company Background: Achter Elektronik AG, established in 1993, specializes in electro-technology, electronics, and cable technology. Lm-therm GmbH, founded in 1961, focuses on industrial climate control, offering products like thermostat-controlled heating systems and PTC heaters.

Product Offerings: The company provides a range of products including thermostat-controlled heating systems, PTC heaters, fan heaters, control systems, sensors, coolers, and accessories. These products are designed to maintain optimal climate conditions within control cabinets, preventing issues like condensation and temperature fluctuations.

Technical Specifications: The document outlines the importance of climate control in control cabinets, detailing the need for heating and cooling to prevent condensation and ensure equipment reliability. It provides guidelines on selecting appropriate heating systems based on factors like ambient temperature, humidity, and enclosure type.

Heating and Cooling Calculations: Detailed formulas and tables are provided to calculate the required heating and cooling power based on enclosure size, material, and environmental conditions. This includes considerations for dew point temperatures and thermal dissipation losses.

Installation Guidelines: Recommendations are given for the installation of heating and cooling systems, emphasizing the importance of proper placement for effective heat distribution and air circulation. The document advises on avoiding interference with natural convection and the placement of heat-sensitive components.

Customer-Specific Solutions: Achter Elektronik AG offers customized solutions for specific customer needs, encouraging clients to contact them for tailored advice and project proposals.

Heating Systems:

Thermostat-Controlled Heaters: These heaters include a built-in bimetal temperature controller, ensuring operational reliability and energy efficiency. They operate without an external temperature controller, offering a price advantage. The switch-off temperature is set at 55°C, but can be modified upon request.
PTC Heaters: These heaters are self-controlling with a dynamic heat-up phase and can operate within a wide voltage range (110 V to 265 V). They do not switch off at a defined point, and an upstream controller is recommended due to high switch-on currents.

Tropical Version: For tropical regions, the operating temperature is adjusted to switch on at <35°C and switch off at 65°C. Customers should indicate "T" when ordering tropical versions.

Mounting and Connection:

Heaters can be mounted using snap fitting on 35 mm DIN rails or screw fastening with individual hole spacing.
Connection options include connecting leads or lead out terminals, with specifications varying by device.

Fuse Protection: Thermostatic heaters can be fused equal to the rated current consumption, while PTC heaters require a delayed-action fuse at five times the rated current due to high switch-on currents.

Custom Solutions: Lm-therm offers flexibility in heating power, mounting techniques, connection methods, enclosure dimensions, shape types, operating voltages, and temperature ranges to meet specific customer needs.

Control Systems: The document encourages inquiries for controllers, sensors, or heating devices not found in the catalog, highlighting the availability of customer-specific versions subject to exclusivity agreements.

Control Cabinet Heating Devices:

Specifications: Available in multiple voltage options (115 V AC, 230 V AC, 400 V AC, 440 V AC) with power ratings ranging from 130 W to 500 W. All devices weigh 1400 g.
Technical Details: Protection class I, IP 54 or IP 65 protection types, temperature settings from 25°C to 65°C, vertical mounting position, and optional connecting leads or lead-out terminals.

PTC Heaters:

Specifications: Available for voltages 24 V AC/DC to 265 V AC/DC with power ratings from 10 W to 300 W. Weight varies from 125 g to 1500 g depending on the model.
Technical Details: Protection class II, IP 54 or IP 65 protection types, self-control temperature behavior, dynamic heating-up, and optional auxiliary fan for improved air distribution.

Fan Heaters:

Specifications: Available in 230 V AC with power ratings from 150 W to 500 W. Weight is approximately 2 kg.
Technical Details: Protection class I, IP 20 protection type, temperature limiting features, airflow rates from 30 m³/h to 120 m³/h, and vertical mounting position.

Additional Components:

Controllers and Sensors: The document includes a guide for selecting appropriate controllers and sensors for heating and cooling applications, with details on temperature and humidity controllers, mounting options, and sensor types.

Key Features:

Multiple connection and mounting options for flexibility in installation.
Protection against overheating and dynamic temperature control for efficient operation.
Optional auxiliary fans and special versions available upon request.

Temperature Sensors: The document lists different types of temperature sensors, including thermocouples (NiCr-Ni, Fe-CuNi, Cu-CuNi, Pt10Rh-Pt) and NTC sensors, with operating ranges from -270°C to +1820°C. These sensors are available in various forms such as cable, duct, immersion, and screw-in sensors.

Thyristor Power Controllers: These controllers are available for single-phase and three-phase systems with inputs of 0-10 V or potentiometer. They can be mounted on rails or fixed with screws and are suitable for controlling heating and cooling processes.

Pressure Sensors: The document describes pressure sensors with a range of 20-4500 Pa and protection type IP 54. It includes differential pressure switches, manometers, and measuring transducers.

Electro-mechanical Temperature Controllers: These controllers are used for heating and cooling devices in industrial settings. They feature various setting ranges and sensor types, with operating voltages from 24 V to 250 V AC. The controllers are available with different contact types and mounting options.

Electronic Temperature Controllers: The document details electronic controllers with modular designs, offering multiple switching steps and feeler inputs. They include features like automatic parameter storage, adjustable setpoint values, and hysteresis. These controllers are suitable for controlling heating and cooling processes and are available with various mounting options and protection types.

Applications and Customization: The document emphasizes the company's ability to provide custom-made control systems and encourages inquiries for devices not listed in the catalog. Applications include control systems for liquid and gaseous media, with options for different temperature ranges and sensor types.

Specifications: The document lists multiple products with their specifications, including voltage, air flow, speed, noise level, weight, and protection type. For example, the 24 V DC fan has a speed of 3050 rpm and a noise level of 42 dB(A).

Procedures: Installation instructions are provided for various components, including mounting dimensions and cut-out sizes for fans and filters. The document also mentions the inclusion of mounting materials and NTC sensors for controlled filter fans.

Standards and Recommendations: The document specifies protection classes and types, such as IP55/IP53 for hoseproof filter fans. It also mentions compliance with CE, TÜV, and ENEC standards.

Product Groups: Products are categorized into groups, such as P3 for fans and P6 for light fixtures. Each group includes specific types and models with detailed descriptions.

Accessories: A range of accessories is listed, including mounting rails, snap fittings, and ground wires. The document also describes special design options and customer-specific production capabilities.

Key Data from Tables: The tables provide a comprehensive list of product specifications, including order numbers, weights, and dimensions. For instance, the LV 300 filter fan has a weight of 1800 g and dimensions suitable for specific installation cut-outs.

Conclusion: The document serves as a technical guide for selecting and installing electronic components and accessories, emphasizing product specifications, installation procedures, and compliance with industry standards.

Application and Function: The document discusses cooling elements using Peltier technology, designed for cooling small control cabinets, operating boxes, switch panels, industrial PCs, CRT monitors, and flat screens. These devices operate at 24 V DC and can be mounted in various positions without refrigerants, offering a compact and non-polluting solution.

Advantages over Compressor Cooling Units: The Peltier cooling elements are compact, can be mounted in any position, and do not use refrigerants, making them environmentally friendly and efficient.

Technical Data: The document provides specifications for different models (K-P 30, K-P 50, K-P 75, K-P 100, K-P 150) with varying cooling capacities, nominal voltages, currents, operating temperatures, and weights. Accessories such as temperature controllers and power supplies are available.

Selection and Output Diagrams: The document includes formulas and examples for selecting the appropriate cooling unit based on temperature differences and desired cooling capacity. Output diagrams for models K-P 50, K-P 100, and K-P 150 illustrate cooling capacity against ambient temperature.

Company Divisions and Services: Achter Elektronik AG offers a range of services including assembly, commissioning, packing, and logistics. They provide custom-made products and services, adhering to ISO 9001 standards. The company emphasizes flexibility, quality testing, and cooperative partnerships with clients.

Contact Information: The document provides contact details for Achter Elektronik AG, including addresses, phone numbers, and email addresses for their locations in Germany.

Catalog excerpts

Thermostat-controlled heating systems(Thermostat built-in) > Complete integrated unitsՕ Component assemblies Printed circuit board special assembliesՕ Outsourcing projects PTC heaters > Electronics / electro-mechanics > analog digital Fan heaters֕ With heavy-duty cartridge Thermostat-controlled > Օ Cable confectioning Wire harnessesՕ Connection technology > Assembly Օ Commissioning Packing > ՕPower suppliesControl cabinet light fixtures Օ KLTsҕ Foils Pallets > ՕDiagram pockets, protection cages, cablesFastening materials EditionA/05 >

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A corporate enterprise of Achter Elektronik AG > 05.06.1961 Leo Mskes establishes a firm in soleproprietorship for the manufacture of wastewater treatment systems in Rthenbach near Nuremberg / Germany. 12.08.1993 Formation of the firm in sole proprietorship:Franz Achter Elektrohandel & Systemtechnik Right from the beginning, the firm of Franz Achter being acompetent and flexible partner for worldwide active compa-nies has - always customer-specifically - realized the most di-verse requirements as a supplier for cable technology andelectrical component assemblies. In control cabinets that were...

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A corporate enterprise of Achter Elektronik AG > Why are heating and/or cooling necessary inside control cabinets? . . . . . . . . . . . . . . . . . . . . . . . . . .Page 2 Our parent company, > General A) "When" should "which" heating system be installed? B)Required heating power (from experience)Determination of heating/cooling power required (formulas, inquiry fax form)C) Dew point temperatures (from experience) D) General notes on climate control in control cabinets Facts worth knowing about our heater program: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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A corporate enterprise of Achter Elektronik AG Meanwhile, we speak about control cabinet climate control instead of control cabinet heating:Heating and/or cooling. This includes temperature control, control of humidity, and also com- bined control of temperature and humidity. Varied fields of application show that this subject is not only prevailing with regard to controlcabinets: Control cabinets, automation, traffic and motor vehicle technologies, telecommuni- cation, switching and control systems, control cabinet distributor systems, switch room di- splays in power plants, in mining and in...

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A corporate enterprise of Achter Elektronik AG 3 > Ambient temperature at the place of installation > Thermal dissipation loss (heat generated by built-in devices) > Open housing or closed enclosure > Extreme temperature gradient between > Free convection of heating air possibleday and night > Size of enclosureVolume in dm > 3 Installation in indoor rooms Installation outdoors Indoors, heated Indoors, unheated Set up outdoors up to 20 10 W 20 W 40 W up to 30 20 W 33 W 55 W up to 50 30 W 55 W 90 W up to 75 30 W 75 W 130 W up to 100 55 W 90 W 150 W up to 120 55 W 90 W 150 W up to 160 55 W 130 W...

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A corporate enterprise of Achter Elektronik AG > General A more uniform heat distribution is achieved if the heater is installed within the lower third of the cabinet. Coolers however, should be installed in the upper area inside the cabinet. > The natural convection of heating air should not be disturbed by extreme packing density of installed built-in devices. Efficiency and heat distribution can be optimized by implementing circulation fans, complete fan heating systems, or by installing small ventilators. (See catalog pages 21 / 23) > Because of high surface temperatures, no heat-sensitive...

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A corporate enterprise of Achter Elektronik AG Our heaters consist of ceramic heating elements, built into an aluminum enclosure designed to thermo-technical specifications, and include an on-off bimetal temperature controller. Resistors and output curves of that heating system show linear characteristics. 1) The built-in temperature controller ensures operational reliability.2) Due to the built-in temperature controller, there are no high surface temperatures thatcould influence or damage the built-in devices in their functional reliability.3) The built-in temperature controller is set to a...

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A corporate enterprise of Achter Elektronik AG Our heaters consist of specifically designed aluminum bodies with inserted PTC elements.These elements are also called thermistors and consist of doped semiconductor materials. 1) PTC heaters are self-controlling with a dynamic heat-up phase. 2) This heating principle can be utilized within a wide voltage range (110 V to 265 V). 3) With types P-25 (page 21) and P-80 (page 23), it is possible to install an additionalfan. Thereby you achieve a more uniform heat distribution and higher efficiency. 4) Regarding tightly packed built-in devices or danger...

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A corporate enterprise of Achter Elektronik AG 8 Examples: We are flexible with: Heating powerՕ Mounting technics Connecting technics Օ Enclosure dimensions Shape types Օ Operating voltages Temperature ranges Take advantage of our know-how in your application! >

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General Flexible in mounting and connecting technicsA) Mounting technics > Common is snap fitting on 35 mm top hat rails. Lm-therm however, also offers a variety of screw fastening connections with individual hole spacing. B) Connection technics > As a standard, the heaters are equipped with connecting cables or lead out terminals. (For details please refer to the respective catalog pages or technical data sheets) EXPRESS Y OUR REQ UESTS! > Snap fittingScrew fasteningConnecting leads (AL)Lead out terminal (DK) A corporate enterprise of Achter Elektronik AG 9 size="-2">

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A corporate enterprise of Achter Elektronik AG 180500 W > Tristate W Page 24250Ņ500 W > Ventstar W Page 25200400 W > HPF 20 W Page 26 > 10 size="-1">

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For more information see "Technical details" Heating technics Voltage Power rating Weight Order No. AL 12 V AC 10 W 200 g 1210AL0 24 V AC 10 W 200 g 2410AL0 48 V AC 10 W 200 g 4810AL0 12 V DC 10 W 200 g 1210AL1 24 V DC 10 W 200 g 2410AL1 48 V DC 10 W 200 g 4810AL1 115 V AC 10 W 200 g 11510AL0 230 V AC 10 W 200 g 23010AL0 12 V AC 20 W 200 g 1220AL0 24 V AC 20 W 200 g 2420AL0 48 V AC 20 W 200 g 4820AL0 12 V DC 20 W 200 g 1220AL1 24 V DC 20 W 200 g 2420AL1 48 V DC 20 W 200 g 4820AL1 115 V AC 20 W 200 g 11520AL0 230 V AC 20 W 200 g 23020AL0 > ߕ Protection class I (ground wire) - protection type IP...

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Lm-therm climate control

Lm-therm climate control

Catalog excerpts

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