SIEMENS S54320-F4-A2 Optical Detctor OP921

( Brand: Siemens ), ( Manufacturer Part Number: S54320-F4-A2 ), ( Model: OP921 ), ( Type: Smoke Detectors )

Review SIEMENS Optical Smoke Detctor New

The Siemens S54320-F4-A2 OP921 Optical Detector is a versatile and reliable sensor designed for various level measurement applications. This sensor is part of Siemens' renowned SITOP DIAS product line, which is known for its high-performance and durability.

The S54320-F4-A2 OP921 is an optical detector that utilizes a retroreflective principle for level measurement. This means it employs two parallel optic faces, one facing the tank wall and the other facing the product level. When the level of the product rises to a certain point, it reflects the emitted light signal back to the sensor, which then interprets this signal as the level being reached.

This sensor is designed with a robust and compact housing, which is suitable for harsh industrial environments. It features a sturdy and corrosion-resistant stainless steel housing, which provides excellent protection against dust, water, and other potentially damaging substances. Moreover, it offers an IP66 protection rating, ensuring that it can withstand heavy spraying and harsh environmental conditions.

The Siemens S54320-F4-A2 OP921 Optical Detector offers a high degree of measurement accuracy and reliability. It features an integrated self-diagnostic function that performs regular checks on the sensor's status, ensuring that any potential issues are identified and addressed promptly. Additionally, it offers a large measuring range of up to 15 meters (49.2 feet), making it suitable for various level measurement applications in different industries.

The sensor can be easily integrated into various control systems, thanks to its compatibility with a wide range of communication protocols, including Siemens' PROFIBUS, PROFINET, and MODBUS. This makes it a flexible and adaptable solution for different automation applications.

The Siemens S54320-F4-A2 OP921 Optical Detector is a reliable and accurate level measurement sensor that is suitable for various industries, including chemical, food and beverage, pharmaceutical, and oil and gas. Its robust design, high accuracy, and ease of integration make it a valuable addition to any industrial automation system.

The Siemens S54320-F4-A2 OP921 optical detector is a versatile sensor used for various applications such as presence detection, intrusion detection, and level sensing. Let's discuss some pros and cons of buying this optical detector:

1. High reliability: Siemens is a well-known brand in the automation industry, and the S54320-F4-A2 OP921 is known for its robust design and high reliability.

2. Versatility: This optical detector can be used in various applications, including presence detection, intrusion detection, and level sensing, making it a versatile sensor for different automation setups.

3. Easy installation: The optical detector is easy to install, and it comes with a variety of connection options, including NAMUR NE 43, NAMUR NE 107, and M5 or M8 threads, making it suitable for various installation scenarios.

4. High sensitivity: The optical detector has a high sensitivity, which makes it suitable for detecting small objects or low-contrast targets.

5. Long service life: The sensor has a long service life, which reduces the need for frequent maintenance and replacement, saving time and resources.

1. Limited operating temperature range: The sensor has a limited operating temperature range, which may not be suitable for applications in extreme temperatures.

2. Cost: The Siemens S54320-F4-A2 OP921 optical detector is more expensive than some other sensors in the market, which may be a consideration for some buyers.

3. Requires calibration: The sensor may require calibration to ensure accurate detection, which can add to the installation and maintenance costs.

The Siemens S54320-F4-A2 OP921 optical detector is a reliable and versatile sensor suitable for various applications. Its high sensitivity, easy installation, and long service life make it an attractive option for automation setups. However, its limited operating temperature range, cost, and the need for calibration are potential drawbacks.

If you are looking for a reliable and versatile optical detector for your automation setup, the Siemens S54320-F4-A2 OP921 is a good option to consider. Its high sensitivity, easy installation, and long service life make it a valuable investment for your automation project. However, if cost is a concern or if your application requires a wider operating temperature range, you may want to explore other options in the market.

Details:

Please See All Pictures. Siemens S54320-F4-A2 OP921 Optical Smoke Detector.

part #: s54320f4a2 prices

• $54.36-$100.00

specifications indusfir:

• brand: Siemens
• mpn: S54320-f4-a2
• model: Op921
• type: Smoke Detectors

general indusfir:

• condition: New Open box
• Facility Maintenance Safety > Fire Protection Equipment > Other Fire Protection Equipment

payments indusfir:

• other
• credit card: Mastercard
• wallet: Paypal

offer indusfir:

• options: Ship-to-home
• started: November 28, 2025
• quantity: 2
• sold: 0
• availability: In Stock
• best offers: True

shipping indusfir:

• carrier: UPS, FedEx
• cost: $12.21
• transit: 4-7 Days
• service: UPS Ground, FedEx Ground / FedEx Home Delivery, FedEx 2Day
• class: Standard, Expedited
• type: Calculated

seller indusfir:

• rating: 100.0%
• city: East Hanover, New Jersey
• # reviews: 8089

returns indusfir:

• method: Money back
• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

Siemens S54320-F4-A2 Is Similar To:

• 135440 Siemens New Sef-cw Fire 786697354403 (23.2% similar) New Siemens serf-cw speaker product overview fast installation with in out screw terminals using 12 to 18 wag wires high-efficiency design for maximum output at minimum wattage across a frequency range of 400 4000 Hz field-delectable taps 25 or 70 RMS operation from 1/8 watt 2 watts speakers shall...(November 5th, 2017)
• 500-033290 Siemens New Hfp-11 Intelligent (23.7% similar) New Siemens HFP-11 intelligent heat photoelectric smoke detector fire alarm R7S5B8...(May 18th, 2017)
• 500-03340 Siemens New Hms-d Addressable (24.2% similar) ...(May 25th, 2017)
• 500-034850 Genuine Siemens Brand New Starter Motor Protector Free Shipping (30.2% similar) Free shipping and handling using the USPS within USA. Siemens 3R1031-4EA10 genuine brand new starter motor protector 690V 32A 3P...(April 5th, 2018)
• 500-048809c Siemens New In Pack Led Annunciator Ceiling (29.9% similar) Shelving number G25...(December 1st, 2018)
• 500-095112 Siemens New Fp-11 Intelligent (23.9% similar) New Siemens FP-11 intelligent heat photoelectric smoke detector fire alarm R7S5B2...(May 18th, 2017)
• 500-636051 Siemens Qty 8 New (35% similar) New in box qty 8 factory packed speaker - strobe fire alarm model set-MC-RP n 500-636051FLORHAM park ,n...(July 9th, 2017)
• 500-636169 Siemens Lot Of New In Box Fire Alarm Strobe (26.4% similar) New in boxes...(July 1st, 2018)
• 500-649706 Faraday New Siemens Air (23.3% similar) You are buying a new Siemens air duct smoke detector housing this will come as pictured in never used condition...(April 18th, 2017)
• 500-649708 Est New Siemens Duct Smoke Detector Housing Writing On Box (39.7% similar) If we show two in the same picture it is for reference only. Warranty begins on date of purchase. Warranty upstate breaker wholesale provides a 1 year on this item. Upstate breaker wholesale provides a 1 year warranty on this item. Is is business location not. What your zip code. What company name ...(October 31st, 2018)
• 500-680588 Siemens Key Locked Door For Fire Fighters Telephone New (33.9% similar) This unit is new...(May 18th, 2018)