Micropilot FMR60, FMR62, FMR67 XA01555F-A
Endress+Hauser 21
• After aligning (rotating) the housing, retighten the fixing screw (see Operating Instructions).
• Install the device to exclude any mechanical damage or friction during the application.
Pay particular attention to flow conditions and tank fittings.
• Only use certified cable entries or sealing plugs. The metal sealing plugs supplied meet this
requirement.
• Before operation:
– Screw in the cover all the way.
– Tighten the securing clamp on the cover.
• After mounting and connecting the antenna, ingress protection of the housing must be at least
IP65.
• Perform the following to achieve the degree of protection:
– Screw the cover tight.
– Mount the cable entry correctly.
• Continuous service temperature of the connecting cable: –40 °C to ≥ +85 °C; in accordance with the
range of service temperature taking into account additional influences of the process conditions
(T
a,min
), (T
a,max
+20 K).
Intrinsic safety
• The device is only suitable for connection to certified, intrinsically safe equipment with explosion
protection Ex ia / Ex ib.
• The intrinsically safe input power circuit of the device is isolated from ground. If the device is only
equipped with one input, the dielectric strength of the input is at least 500 V
rms
. If the device is
equipped with more than one input, the dielectric strength of each individual input to ground is at
least 500 V
rms
, and the dielectric strength of the inputs vis-à-vis one another is also at least
500 V
rms
.
• Observe the pertinent guidelines when interconnecting intrinsically safe circuits.
• The device can be connected to the Endress+Hauser FXA291 service tool: refer to the Operating
Instructions and specifications in the "Overvoltage protection" chapter.
Basic specification, Position 3 (Power Supply, Output) = A
When the device is connected to certified intrinsically safe circuits of Category Ex ib for Equipment
Groups IIC and IIB, the type of protection changes to Ex ib IIC and Ex ib IIB. Do not operate the
antenna in Zone 0 if connecting to an intrinsically safe circuit of Category Ex ib.
Basic specification, Position 3 (Power Supply, Output) = B, C
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 [ia] IIC or Ex ib [ia] IIB. Regardless of the power supply, all the internal circuits correspond to
Ex ia IIC type of protection (e.g. service interface, external display, sensor).
Potential equalization
Integrate the device into the local potential equalization.
Overvoltage protection
• If an overvoltage protection against atmospheric over voltages is required: no other circuits may
leave the housing during normal operation without additional measures.
• For installations which require overvoltage protection to comply with national regulations or
standards, install the device using overvoltage protection (e.g. HAW56x from Endress+Hauser).
• Observe the safety instructions of the overvoltage protection.
Optional specification, ID Nx (Accessory Mounted) = NA
(Overvoltage protection Type OVP10 and Type OVP20)
The intrinsically safe input power circuit of the device is isolated from ground. If the device is only
equipped with one input, the dielectric strength of the input is at least 290 V
rms
. If the device is
equipped with more than one input, the dielectric strength of each individual input to ground is at
least 290 V
rms
, and the dielectric strength of the inputs vis-à-vis one another is also at least
290 V
rms
.
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