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Data Sheet D...R 302

Product catalog summary

Overview: The document is a technical data sheet for the Duo Limistat, a product by Trafag Sensors & Controls, designed for HVAC and refrigeration applications. It features two individual measuring systems, a short response time, and IP54 protection.

Applications: The Duo Limistat is suitable for HVAC and refrigeration systems, offering precise pressure and temperature measurement.

Technical Specifications:

Double thermostat with remote sensor and limiter.
Switching differential: adjustable/not adjustable.
Measuring range: -30°C to +350°C.
Repeatability: ±0.5% FS typical.
Output signal: Floating change-over contact.
Approval: EN60730-1/EN60730-2-9: typ 2.B.H.

Ordering Information: The product type code is structured to specify microswitch type, temperature range, sensor material, and other features. Various configurations are available based on application needs.

Temperature Ranges and Sensor Materials: The document lists various temperature ranges and corresponding sensor materials, including stainless steel and copper, with different diameters for specific applications.

Environmental Conditions:

Ambient temperature ranges from -30°C to +70°C depending on the application.
Storage temperature ranges from -30°C to +85°C.
Humidity: Maximum 95% relative.

Mechanical and Electrical Data:

Housing: Noryl with a screwed cable gland made of polyamide.
Installation: Any position.
Weight: Approximately 620g.
Microswitch rating and electrical connection details are provided, including resistive and inductive load ratings.

Additional Information: Further documentation and instructions are available on the Trafag website.

Catalog excerpts

HVAC Refrigeration With 2 individual measuring systems Short response time Protection IP54 Electrical connection on terminal screw Technical Data Designation of application Double thermostat with remote sensor and limiter Switching differential Adjustable/not adjustable Measuring range Output signal Floating change-over contact Trafag Sensors & Controls Switzerland www.trafag.com [email protected] Swiss based Trafag is a leading international supplier of high quality sensors and monitoring instruments for the measurement of pressure and temperature.

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D ... R 302 Ordering information/type code 302 . XX XX XXX XX XXXXXXXXX XX XX Microswitch Standard switching differential, not adjustable (Microswitch 11, Limiter Switch 12) Adjustable standard switching differential (microswitch 25, limiter switch 12) Small switching differential, not adjustable (Microswitch 10, Limiter Switch 12) Temperature controller and limiter [°C] -30 ... +40 Sensor material Stainless steel Stainless steel Stainless steel Stainless steel Stainless steel Sensor material Copper nickel plated Copper nickel plated Copper nickel plated Copper nickel plated Copper nickel plated...

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Outdoor usage (aerated) Capillary tube protection: Flexible metal tube, brass nickel plated Capillary tube protection: Flexible metal tube 1.4541/V2A Capillary tube protection: PVC tube Capillary tube length Signal lamp Capillary tube length up to 5000 mm (no specification required for direct mounting on protection tube) L=XXXX 3) See data sheet H72114/H72163 See data sheet H72106 3) Overlengths upon request 1) 2) Standard products (extra short lead time) Product No. Type Code Temperature range Switching differential [°C] [°C]

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Temperature compensated with bimetal switch lever Ambient temperature Range ≤ +45°C: -30...+50°C Range +45...+250°C: -30...+70°C Range > + 250°C: -10...+70°C (Important: Temperature at sensor may not exceed maximum sensor temperature) Storage temperature Sensor housing Screwed cable gland Dielectric strength Life time (mechanical) Microswitch 10/11/25: 20 Mio. cycles Microswitch 12: 0.3 Mio. cycles Cable gland Terminal screw Electrical connection Switching point Switching differential Mechanical Data Environmental conditions Additional information Documents Data sheet Instructions Flyer

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D ... R 302 Switching differential typ. Range Microswitch 10 Switching differential (fixed value, not adjustable) Microswitch 11 Switching differential (fixed value, not adjustable) Microswitch 12 Switching differential (fixed value, not adjustable) Microswitch 25 Switching differential (adjustable value) Electrical data switch Rating Resistive Load (Inductive Load) Type 10 Features Small switching differential, not adjustable Average switching differential, not adjustable Large switching differential, not adjustable Adjustable standard switching differential Electrical Connection

Open the catalog to page 5

All Trafag AG sensors & controls catalogs and technical brochures

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