The distance between the 500 Series pipe or fitting connections is identical to those of previous
Proteus flow sensors.
Weighing only 16.8 oz (470 g), the metering flow switch can be mounted directly to your pipe or
tubing.
Mounting lugs are located at the place of previously used panel mounting screws. The 500
Series metering flow switch can be panel mounted with two screws and appropriate standoffs.
•
Stainless Steel faceplate extends operating range
The rugged stainless steel faceplate permits operation from –40 to 140ºC and 250 psi(1720 kPa).
A Viton® O-ring provides the liquid seal. Other materials are optionally available for enhanced
chemical compatibility with specialized coolants.
•
Space requirements reduced by more than 50%
•
Trip point is user selectable.
500TRM-002
Page 4 of 22
March 2007
Trip points are selected by adjusting a 16-
position switch as shown in Table 1.
This feature provides the ability to change trip
point settings predictably, accurately and
precisely without the use of complex
instrumentation.
Tri-color LED
See Section 7 for instructions on selecting trip
points.
•
Optional potentiometer provides fine tuning capability
If your trip point must be set with finer control than is provided by the 16-position switch a
potentiometer provides the adjustment you need. This potentiometer can be adjusted from 7.00
o’clock to 5.00 o’clock positions. Refer to Section 7 for instructions on selecting trip points.
Switch Position
Model
Number
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0504SA2
0504SN2
0.12
0.24
0.35
0.47
0.59
0.71
0.82
0.94
1.06
1.18
1.29
1.41
1.53
1.65
1.76
1.88
0504SA4
0504SN4
0.26
0.53
0.79
1.06
1.32
1.59
1.85
2.12
2.38
2.65
2.91
3.18
3.44
3.71
3.97
4.24
Table 1: Flow Rate in GPM at selected Switch Positions with straight connection to inlet
port and fine adjustment potentiometer in the 12 o’clock position.
Note
Elbows and other devices installed that induce swirling motion in the flowing liquid that are
installed within 4 inches (16 cm) of the inlet port reduce the linear velocity of liquid through the
flow sensor.
When such devices are present the actual flow rate through the flow sensor may be HIGHER
than is suggested in Table 1.
16-position
switch
Fine adjust
potentiometer
