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SIMPLE APPARATUS PCB (MX1R-IS)
The flowmeter is fitted with Simple Apparatus PCB (MX1R-IS) that conforms to the demands of Intrinsically Safe
environment.
Simple apparatus PCB is an electronic board fitted with Dual Reed Switches with 20-25 cm of wire (Alpha wire
3464C or better)
Ground Signal
Reed Switch S1 Green + Shield White
Reed Switch S2 Black + Shield Red
The MX1R-IS module is designed according to IEC 60079-0:2018 and IEC 60079-11:2012. It is completely pas-
sive, adds no energy to the circuits connected and complies with the applicable clauses for Simple Apparatus
(per IEC 60079-11) when used in conjunction with the Intrinsically Safe display
Both reed switch input circuits of the MX1R-IS module, are suitable for use as simple apparatus in type of protec-
tion intrinsic safety Ex ia IIC, only for connection to certified intrinsically safe circuits, with following maximum
values:
Ui = 10 V Li = 0 mH
Ii = 50 mA Ci = 0 µF
Pi = 200 mW
This product cannot be repaired by the user and must be replaced with an equivalent certified product. Re-
pairs should only be carried out by the manufacturer or his authorized agent.
Before Replacing/installing MX1R-IS board, the service man/installer must discharge himself by touching a
well-grounded object.
The MX1R-IS module must be installed in accordance with the EMC guidelines (Electro Magnetic Compati-
bility).
The relative humidity must be less than 90% RH.
Cable fitted to Simple Apparatus PCB is non-extendable
Do not connect reed switch to any external device
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