Master Catalog — Gems Sensors & Controls - G-22

FS-200 Series - General Purpose,
Straight-Through Flow Path
Flow Rate Settings: Fixed: 0.5 GPM to 100.0 GPM
Adjustable: 1.0 GPM to 15.0 GPM

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Port Size: 1˝ NPT to 2˝ NPT

FS-200 Series

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U.L. Recognized
File No. E31926
CSA Listed -
File No. LR30200
and LR22666
FM Approved -
File No. 0A8A3.AE
and 1H3A2.AX

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Primary Construction Material: Bronze or Stainless Steel
Setting Type: Fixed or Adjustable
The FS-200 Series offers accurate flow detection, with 1% repeatability, over a broad
range of flow settings and port sizes. Its durable construction delivers long-life
reliability in either water or oil. Generous flow paths keep pressure drop low. These
switches are ideal for detection of improper flow rates in high volume lubrication,
cooling or process systems.
FS-200 Adjustable Series switches offer the same accuracy and are as rugged as those
with fixed settings, but provide one additional feature: external adjustability. With these
versatile switches your choice of flow settings is diverse within a given range. An
ordinary, flat-blade screwdriver is all that's required for the actuation adjustment.

FS-200 Adjustable

U.L. Recognized
File No. E31926
CSA Listed -
File No. LR22666
FM Approved -
File No. 0Q2A8.AE

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Specifications
Wetted Materials
Housing
FS-200
FS-200 Adjustable

Bronze or 316 Stainless Steel
Bronze

FLOW SWITCHES

Shuttle

Teflon®

Bonnet

Bronze or Stainless Steel

Spring

316 Stainless Steel

Other Wetted Parts

Viton®, Ceramic

Pressure Rating
Operating
Proof

400 PSIG (27.6 bar) @ 100°F (37.8°C)

Dimensions
#18 AWG., 24 " L.,
POLYMERIC JACKET

1/2 " -NPT
BONNET
SWITCH
HOUSING

B

800 PSIG (55.2 bar) @ 100°F (37.8°C)

INLET PORT

Operating Temperature
FS-200

-20°F to +300°F (-29°C to +148.9°C)

FS-200 Adjustable

-20°F to +200°F (-29°C to +93.3°C)

Repeatability

1% Maximum Deviation

Set Point Accuracy

±10%

Set Point Differential

15% Maximum

Switch*

SPDT, 20 VA

Electrical Termination	
	

No. 18 AWG, 24˝ L., Polymeric Lead Wires
Red NC, Black Common, Orange NO

NPT PORT

A

Model

C

Port Size
NPT

A
inch (mm)

B
inch (mm)

C Hex
inch (mm)

1˝

3-1/4 (82.6)

3 (76.2)

1-25/32 (45.2)

1-1/4˝
4 (101.6) 3-3/16 (80.9) 2-3/16 (55.5)
FS-200
and
1-1/4˝ ss 4-1/2 (114.3) 3-3/16 (80.9) 2-3/16 (55.5)
FS-200
Adjustable 1-1/2˝ 4-1/2 (114.3) 3-1/2 (88.9) 2-1/2 (63.5)

*See " Electrical Data " on Page X-5 for more information.

2˝

5-3/8 (136.5)

4 (101.6)

3-3/32 (78.5)

Notes:
1. Adjustable versions available in 1 inch port sizes only.
2. Standard calibration is in water with units in a horizontal position.
3. Viscosity changes will affect setpoints. Typically, as viscosity
increases setpoints will decrease.
4. Consult Gems for special applications.

G-22

Visit www.GemsSensors.com for most current information.

FS-200 Series / p1of2 / 30-JUL-14
http://www.GemsSensors.com
Master Catalog — Gems Sensors & Controls

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