Tecfluid AMR For 2000 Series - Manual (Page 2)

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INTRODUCTION
The PT-AMR is a magnetically operated bi-stable reed switch, operated by the magnet in the
flowmeter’s float. The limit switch can be supplied as a normally open switch when the float is
below the switch (PT-AMR NA), or as a normally closed switch (PT-AMR NC).
ELECTRICAL CONNECTION
For the electrical installation, a multi-conductor cable should be used to obtain a good seal with
the cable gland. The connector is provided with a PG 9 cable gland, suitable for a 4.5 to 7 mm
outside diameter cable. Terminals 1 and 2 of the connector are connected to the two ends of the
reed switch.
PTM / PSM
DN 15 20
½" ¾"
A 47 52
PT / PS
DN 15 20 25 40 50 65 80
½" ¾" 1" 1½" 2" 2½" 3"
A 47 52 62 70 70 90 90
6000
DN 15-20 20-25 40(1) 40(2) 50 65-80
½"-¾" ¾"-1" 1½" 1½" 2" 2½"-3"
A 48 51.5 61 67.5 80 94
In the female connector:
Terminal 1: Reed switch contact
Terminal 2: Reed switch contact
Terminal 3: No connection
Earth terminal: No connection
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1 2