Temperature sensor Danfoss NTC EKS211 3,5 m 084B4404 / 084N1221
In Stock
in stock
Specification
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VAT:23,00%
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UPC Code:5702428099714
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Symbol:084B4404
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Length:3,5 m
Product Description
Danfoss EKS 211 NTC 5000 3.5 m Temperature Sensor (084B4404 / 084N1221)
Danfoss EKS 211 is a temperature sensor with an NTC 5000 ohm/25°C element designed to work with EKC series controllers — primarily EKC 100, ERC21x. The measurement range from -40°C to +80°C covers typical refrigeration, air conditioning and heating applications. The 3.5 m cable version comes in a 150-piece bulk carton (084B4404).
Key features and benefits
- NTC 5000 ohm at 25°C element — resistance decreases with temperature (negative temperature coefficient), offering high sensitivity to temperature changes in typical refrigeration and air conditioning applications.
- Measurement range -40…+80°C — covers refrigeration, air conditioning and heating applications where operation below -40°C is not required.
- IP67 protection rating — dust-tight and resistant to temporary immersion in water, ensuring reliability in humid refrigeration environments and during equipment washdown.
- PBT sensor housing — durable thermoplastic polyester resistant to typical chemicals used in the food and HVAC industries.
- 3.5 m PVC cable 2×0.22 mm2 — flexible cable provides installation freedom where the sensor is located away from the controller.
Important: Due to the relatively high resistance tolerance of the NTC element, the EKS 211 sensor is not suitable for temperature monitoring and recording in HACCP systems. For these applications, use a Pt1000 sensor (e.g. AKS 12).
Technical data
| Parameter | Value |
|---|---|
| Catalog number | 084B4404 / 084N1221 |
| Type | EKS 211 |
| Sensor element type | NTC |
| NTC element characteristic | B(20/100): 3980 ±1.5% |
| Nominal resistance | 5000 ohm at 25°C |
| Measurement range | -40 to +80 °C |
| Time constant (water) | 25 seconds |
| Time constant (air) | 80 seconds |
| Protection rating | IP67 |
| Cable length | 3.5 m |
| Cable material | PVC, 2 × 0.22 mm2 |
| Sensor housing material | PBT (Thermo-Plastic Polyester) |
Manufacturer documentation:
The EKS 211 sensor is compatible with Danfoss controllers supporting NTC 5000 input, mainly the EKC 100. Before installation, make sure the controller is configured for an NTC 5000 sensor. The sensor is not intended for HACCP temperature recording.
FAQ — Frequently asked questions
What is the difference between the NTC EKS 211 sensor and the PTC EKS 111 sensor?
The EKS 211 uses an NTC element — its resistance decreases as temperature rises (negative temperature coefficient), nominally 5000 ohm at 25°C. The EKS 111 uses a PTC element with resistance increasing with temperature (1000 ohm at 25°C). Both sensors have a large resistance tolerance and neither is suitable for HACCP monitoring or overheating measurement.
Which Danfoss controller is the EKS 211 intended for?
The EKS 211 sensor is primarily intended for the EKC 100 controller, provided the measurement tolerance is acceptable for the given application.
What is the temperature range of the EKS 211 sensor?
The sensor measures temperature from -40°C to +80°C. This range covers typical refrigeration and air conditioning applications, but not deep freezing below -40°C — for those applications use the AKS 12 sensor (range to -40°C) or AKS 11 sensor (to -50°C).
What is the protection rating of the EKS 211 sensor?
The sensor has an IP67 rating — dust-tight and resistant to temporary immersion in water.
What is the time constant of the EKS 211 sensor?
The time constant is 25 seconds in water and 80 seconds in air. This means the sensor responds faster to temperature changes in liquid than in air — which is typical for immersion sensors used in refrigeration systems.