Trimec RT12 Series - Flowmeter connections (un-powered sensors); Flowmeter connections (powered sensors)

8 Installation
3.2 Flowmeter connections ( un-powered sensors )
For Intrinsically Safe installations refer to I.S. supplement manual.
Installation 9
3.2 Flowmeter connections ( powered sensors )
For Intrinsically Safe installations refer to I.S. supplement manual.
8~24Vdc
external
pow er
+Vdc
+∏
-gnd
Namur proximity
input
DIP switch 2 in
the ON position
( 250 hz max.)
ON
1 2 3
gnd
+
-
-
+
NOTE : Voltage not to exceed 13.4 Vdc
through an approv ed barrier if when using
an intrinsically saf e NAMUR proximity in a
hazardous area ( EEx Ia 11C ). Ty pically
these proximity ’s are limited to 8.2 Vdc
-
+
NAMUR
Inductive Proximity
4
5
6
1
2
3
Ground screen at 3
8~24Vdc
external
power
+Vdc
+∏
-gnd
Hall effect input
( NPN open collector )
DIP switch 1 in
the ON position
ON
1 2 3
gnd
+
-
-
+
Hall
effect
-0V gnd
+ ∏
+Vdc
NOTE: For an input
>800hz position a ¼
watt resistor across
terminals 1 & 4,
12Vdc: 1Meg Ω
24Vdc: 2Meg Ω
4
5
6
1
2
3
Ground screen at 3
8~24Vdc
external
pow er
+Vdc
+∏
-gnd
4
5
6
Modulated current
pulse input (4~20mA)
All DIP switches
to be in the OFF
position
ON
1 2 3
gnd
+
-
-
+
Coil w ith pre-amp
current modulated
-
+
B
A
NOTE: Position a 100 ohm,
¼ watt resistor across
terminals 1 & 3 as shown
1
2
3
Ground screen at 3
+Vdc
+∏
-gnd
4
5
6
Coil input from
turbines or paddle
DIP switch 1 in
the ON position
( 5 Khz max.)
ON
1 2 3
gnd
+
-
tw isted pair
Screen grounded at
amphenol shroud or
terminal box
and terminal 3
1
2
3
+Vdc
+∏
-gnd
4
5
6
Reed switch input
DIP switches
1 & 3 (de-bounce)
in the ON position
( 40 hz max.)
ON
1 2 3
gnd
+
-
Ground screen at 3
1
2
3
Note: DIP sw itch 3 is to be
OFF for reed switch input
frequencies greater than 40 hz.
+Vdc
+∏
-gnd
4
5
6
Voltage pulse
input (pulse wire)
ON
1 2 3
gnd
+
-
S
N
green
yellow
1
2
3
Ground screen
at 3
All DIP switches
to be in the OFF
position