Evaluation unit NLSW45-3 SIL2, flow monitoring with SIL2 certification

(1 customer review)

Flow monitoring with SIL2 certification according to IEC 62061 (corresponds to Performance Level d according to EN ISO 13849-1)

Wide measuring range from 0.1 to 35 m/s with media temperatures from 0°C to 60°C

With switching output suitable for control cabinet installation

Designed for demanding industrial applications, IP40

Redundant design of the evaluation electronics and use of 2 measuring sensors required

The product is available immediately.

From 429.30 Excl. VAT

F3 SIL2
Insertion depth
From 211.20 Excl. VAT
28.20 Excl. VAT

In demanding industrial environments where safety and reliability are crucial, the NLSW®45-3 SIL2 flow monitor offers an irreplaceable solution. The flow monitor operates on the calorimetric measuring principle and has been specially developed to ensure precise monitoring of gas flows in safety-critical applications, including in the chemical, petrochemical and power generation industries. With Safety Integrity Level (SIL) 2 classification (IEC 61508) or Performance Level d (ISO 13849), this flow monitor meets the highest safety requirements and ensures reliable operation even under the harshest conditions. You can find more information on the topic of Safety Integrity Level in our new Whitepaper. By improving process reliability, the device helps to minimize downtimes and extend maintenance intervals.

The NLSW®45-3 SIL2 impresses with its functionality and conformity with safety standards. It offers users real added value thanks to its ability to reliably monitor air flows and thus ensure system integrity. Its robust design (IP67 for the wetted sensors and IP65 for the evaluation electronics) is built to last, while the intuitive user interface makes it easy to use even under extreme conditions.

In the media temperature range from -25 to 120°C, the evaluation unit monitors whether the air flow exceeds or falls below a defined level. The device covers a measuring range from 0.1 to 35 m/s. The desired switching point can be infinitely adjusted using a potentiometer on the device. On request, we can supply the measuring device calibrated to a defined switching point (factory calibration certificate).

The device has a changeover relay (NC/NO contact) and is usually connected to a safety PLC. The fault-free function and the reaching of the switching point can also be seen from a distance by means of LEDs.

The evaluation unit is available with operating voltages of 24 V AC/DC and 230 V AC. The device can optionally be used in ATEX zones 1 and 2: NLSW®45-3 Ex SIL2.

The NLSW®45-3 SIL2 flow monitor works in conjunction with the flow sensors F3 SIL2. Please note that 2 sensors are required to guarantee the safety function due to the redundant design. The sensors are available in different immersion depths and cable lengths. For standard applications, the sensors are made of nickel-plated brass and are optionally available in stainless steel (1.4571) or Teflon. The sensors are easy to install in pipes and ducts. The gas flow should always be measured in the middle of the air duct. The sensors are mounted by screwing them in directly (PG7 thread, G1/2-inch, G¼-inch reducer available), by using a fixed or flexible mounting flange or by means of a screw-in adapter.

Installation and commissioning are straightforward thanks to clearly structured instructions. The device can be quickly integrated into existing systems without lengthy adjustments. Its standardized design ensures seamless integration into various industrial control systems and automation environments.

Our team attaches great importance to your satisfaction. Detailed documentation and expert services are available to ensure that the commissioning and maintenance of the NLSW45-3 SIL2 always runs smoothly. Customers benefit from expert advice and fast technical support. We will be happy to help you select the right components and advise you on our services.

Additional information
Weight N/A
Medium

Signal output flow

Switching function with flow

Signal indication in case of flow

Switching point

Measuring range flow

Electrical connection

Protection class housing

Housing dimensions

Media temperature

Ambient temperature

Relay output specification

Reviews (1)

1 review for Auswerteeinheit NLSW45-3 SIL2, Strömungsüberwachung mit SIL2 Zertifizierung

  1. Axel Graupner -

    Accurate and reliable. That's all you want.
    The handling is well thought out.

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Certificates and characteristic values

Additional information
Weight N/A
Medium

Signal output flow

Switching function with flow

Signal indication in case of flow

Switching point

Measuring range flow

Electrical connection

Protection class housing

Housing dimensions

Media temperature

Ambient temperature

Relay output specification

Reviews (1)

1 review for Auswerteeinheit NLSW45-3 SIL2, Strömungsüberwachung mit SIL2 Zertifizierung

  1. Axel Graupner -

    Accurate and reliable. That's all you want.
    The handling is well thought out.

Add a review

Your email address will not be published. Required fields are marked *

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