29608 Gems Sensors Inc, 29608 Datasheet
![Flow Sensor](/photos/19/90/199047/4436474_sml.jpg)
29608
Manufacturer Part Number
29608
Description
Flow Sensor
Manufacturer
Gems Sensors Inc
Datasheet
1.29608.pdf
(1 pages)
Specifications of 29608
Pressure Max
138bar
Accuracy
+/-25%
Operating Pressure Range
2000psig Max.
Sensing Accuracy
25%
Body Material
Stainless Steel
Mounting Type
1/2-inch NPT/1-inch NPT
Power Rating
20VA
Port Size
0.5"
Connection Size
1"
Features
Long Paddle
Leaded Process Compatible
No
Rohs Compliant
No
Accuracy %
25%
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
G-24
FS-550 Series – High Pressure, Metal
Paddle Switch
Pipe Line Size: 1-1/4˝ and Up
Primary Construction Material: Stainless Steel or Brass
Setting Type: Fixed
Standard FS-550 switches sense liquid flow in either direction to monitor flow/no-flow
conditions. They are supplied in two paddle lengths. The paddle is trimmed during
installation to permit switch actuation at the desired flow rate. As flow increases in
a pipe, the paddle of the switch pivots to move out of the liquid path, producing less
than 3 PSIG of pressure drop regardless of pipe size.
Specifications
Wetted Materials
Operating Pressure, Maximum
Pressure Drop
Operating Temperature
Set Point Accuracy
Switch*
Repeatability
Electrical Termination
*See “Electrical Data” on Page X-5 for more information.
Standard Actuation and De-actuation Set Points
The Table below indicates paddle lengths which achieve switch actuation for specific
flow rates. Approximate pipe line sizes are marked on paddle.
All flow rate tests for the above table were conducted with the switch installed in a
standard “T” fitting. For calculation of flow rates in pipe sizes larger than 5˝, a flow
velocity of approximately 0.5 ft. per sec. actuates the switch with a full length (5˝ )
paddle. The paddle can be trimmed to achieve different actuation points.
How To Order – Standard Models
Select switch type, paddle length and housing material, then specify adjacent part
number.
Note: The FS-550 Switch is not recommended for use with 1˝ plastic tees.
Paddle Unit
Paddle Unit
Housing
Paddle
Spring
Other Wetted Parts
Standard
Switch
Short
Long
SPDT
Type
Unit
at Paddle
Pipe Size
Marked
Cut-Off
1-1/4˝
1-1/2˝
2-1/2˝
Point
2˝
3˝
4˝
Paddle
Length
Short
Long
1-1/4˝
5 (3)
—
—
—
—
—
Approximate Actuation and (De-Actuation) Flow Rates
Material
316 S.S.
316 S.S.
Housing
Brass
Brass
15 (11)
1-1/2˝
13 (8)
—
—
—
—
Operation
Visit www.GemsSensors.com for most current information.
Switch
22 (15)
28 (21)
22 (15)
Brass or 316 Stainless Steel
302 Stainless Steel
316 Stainless Steel
Ceramic and Teflon
2000 PSIG (138 bar)
3 PSIG (0.2 bar) Maximum
-30°F to + 300°F (-34.4°C to + 148.9°C)
± 25%
SPDT, 20 VA
± 5%
No. 18 AWG, 24˝ L., Polymeric Lead Wires
N.O.
N.C.
Pipe Line Sizes
or
—
—
—
2˝
GPM Water
29 (22)
38 (30)
27 (20)
21 (14)
2-1/2˝
—
—
Standard
29609
29608
30641
30640
®
Part Numbers
48 (38)
40 (26)
31 (20)
—
—
—
3˝
3-Pin J-Box
56730
56729
66914
61189
52 (39)
45 (32)
39 (25)
—
—
—
4˝
Dimensions
FS-550 switches are U.L. Approved for Class I,
Division 2, Groups A, B, C, D hazardous areas.
1-1/2" -3"
PADDLE
(LONG)
1" NPT
1/2" NPT
1-1/2"
2-1/2"
2"
3"
Using GEMS SAFE-PAK
Relays and barriers,
these switches provide
automatic flow/no
flow interlock and
are intrinsically-safe
without explosion-proof
housing and piping.
U.L. Approved — File No. E183854
1- 1/ 2
2- 1/ 2
2
3
"
"
"
"
They are also available as FM-approved
when used with GEMS Junction Boxes
which are explosion-proof for Class I,
Division 1, Groups B, C, D, E, F, G hazardous
locations.
(139.7 mm)
(87.2 mm)
3-7/16"
(25.4 mm)
5-1/2"
1"
U.L. Recognized
File No. E31926
CSA Listed —
File No. LR30200
and LR22666
FM Approved —
File No. 0A8A3.AE
and 1H3A2.AX
HAZARDOUS
SWITCH
FS-550
SAFE-PAK
AREA
(42.8 mm)
(SHORT)
PADDLE
1-11/16"
1-1/4"
VAC
LOAD
(25.4 mm)
1"
1"