IFM NM500A Operating instructions

Brand: IFM

Model: NM500A

Type: Operating instructions

IFM NM500A is an inductive NAMUR sensor certified for use in hazardous areas. With an internal inductance of 450 µH and capacitance of 250 nF, it can be connected to intrinsically safe circuits with a maximum voltage of 15 V, current of 50 mA, and power of 120 mW. Installation should be done by qualified staff familiar with hazardous area regulations, and the device should not be modified or repaired. For more information, refer to the manufacturer's data sheets and certificates.

Operating instructions

(Ex protection related part)

Inductive NAMUR sensor

NF / NG /

NI / NM

11455628 / 0008 / 2022

NF / NG / NI / NM Inductive NAMUR sensor

1 Safety instructions

Remarks for safe use in hazardous areas.

• The device must only be installed, connected and set up by qualified staff. The qualified staff must

have knowledge of types of protection, regulations and provisions for apparatus in hazardous

areas.

• The classification and marking of the device must be suitable for the application.

• Adhere to the respective national regulations and provisions as well as the relevant installation

regulations.

• Observe applicable documents.

2 Intended use

Use in hazardous areas according to the classification:

NF / NG:

ATEX classification Identification Permissible ambient temperature

II 1G Ex ia IIB T6 Ga Ta -20...70°C

II 1D Ex ia IIIC T₂₀₀ 90°C Da Ta -20...70°C

NI:

ATEX classification Identification Permissible ambient temperature

II 1G Ex ia IIB T6 Ga Ta -20...70°C

II 2G Ex ia IIC T6 Gb Ta -20...70°C

II 1D Ex ia IIIC T₂₀₀ 90°C Da Ta -20...70°C

NM:

ATEX classification Identification Permissible ambient temperature

II 2G Ex ia IIB T6 Gb Ta -20...70°C

II 1D Ex ia IIIB T₂₀₀ 90°C Da Ta -20...70°C

Type examination certificate:

• IEC: IECEx BVS 06.0003X

• EU: BVS 04 ATEX E091 X

The requirements of the following standards are met:

• EN IEC 60079-0:2018, EN 60079-11:2012

• IEC 60079-0:2017, IEC 60079-11:2011

Connection only to intrinsically safe circuits which are approved with the type examination certificate

and do not exceed the following maximum values:

Ui = 15 V, Ii = 50 mA, Pi = 120 mW

Maximum effective internal inductance (Li) and capacitance (Ci):

Article number Internal inductance (Li) in µH Internal capacitance (Ci) in nF

NF500A 145 210

Inductive NAMUR sensor NF / NG / NI / NM

NF501A 115 210

NG500A 85 200

NG501A 190 200

NI500A 120 250

NI501A 210 230

NM500A 450 250

NM501A 710 220

3 Installation

uProtect device and cable against destruction.

uAvoid electrostatic charging on plastic housings and cables.

uTo avoid electrostatic charging, ensure the equalisation of potential of metal parts (connector

housing, fixing elements, protective housing, etc.).

uDo not install the device in the partition between different zones.

uWhen used in zone 0, protect the sockets against intensive electrostatic charging.

3.1 Special conditions for safe operation

uAlways refer to the operating instructions for the identification, as it may not be fully applied to the

device due to lack of space.

4 Maintenance, repair and disposal

The device must not be modified nor can it be repaired. In case of a fault please contact the

manufacturer.

If needed, data sheets and type examination certificates or other certificates can be requested from

the manufacturer (Ò cover sheet / back).

IFM NM500A Operating instructions

IFM NM500A Operating instructions

IFM NM500A Operating instructions

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