Endress+Hauser Proline Promass 200, Safety Instructions

Proline Promass 200

7

• The device can be connected to the Hauser FXA291 service tool when area is 

known to be non hazardous. Refer to the Operating Instructions.

• Basic specification, Position 3 (Output) = A, B, C, G

– When the intrinsically safe Ex ia circuits of the device are connected to certified 

intrinsically safe circuits of Category Ex ib for Equipment Groups IIC or IIB, the type of 

protection changes to Ex ib IIC or Ex ib IIB.

– When the intrinsically safe Ex ia circuits of the device are connected to certified 

intrinsically safe circuits of Category Ex ia for Equipment Group IIB, the type of 

protection changes from Ex iaIIC to Ex ia IIB. 

Potential equalization 

Integrate the device into the local potential equalization. If the ground connection has been 

established via the pipe as specified, it is also possible to integrate the sensor into the 

potential equalization system via the pipe.

Safety instructions: 

Zone 0

In the event of potentially explosive vapour/air mixtures, only operate the device under 

atmospheric conditions. 

• Temperature: –20 to + 60°C

• Pressure: 80 to 110 kPA (0.8 to 1.1 bar) 

• Air with normal oxygen content, usually 21 % (V/V)
If no potentially explosive mixtures are present, or if additional protective measures have 

been taken according to EN 1127-1, the device may also be operated under non-

atmospheric conditions in accordance with the manufacturer's specifications.

Basic specification, Position 1, 2 (Approval): N4

Install the transmitter electronics in Zone 1. The device can, however, be used in the 

measuring pipe in Zone 0.

Safety instructions: 

Zone 21

• To ensure dust-tightness, securely seal the transmitter housing and cable entries.

• Only open the transmitter housing briefly, ensuring that no dust or moisture enters the 

housing.

• Only use certified cable entries or sealing plugs. The metal sealing plugs supplied meet the 

requirements.