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FLOW SWITCH SELECTION GUIDE

FLOW SWITCH SELECTION GUIDE
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FLOW SWITCH SELECTION GUIDE

Product catalog summary
Overview: The document provides comprehensive technical specifications and application guidelines for flow switches and sensors manufactured by Thomas Products Ltd. It covers various models, detailing their specifications, applications, and ordering information.
Model Specifications:
  • Model 1700: Suitable for water flow from 2 cc/min to 300 cc/min and air flow from 2 SCFH to 50 SCFH. It features factory-replaceable switch capsules and is ideal for lubrication systems and low flow applications.
  • Model 1900: Offers standard flow calibration in water at 70°F, with optional aluminum housings and high-temperature units up to 400°F.
  • Model 2000: Detects flow from 0.5 GPM to 3.0 GPM, available in brass or stainless steel, with relays for higher loads.
  • Model 2100 & 2200: Made from FDA-approved polysulfone, with Model 2100 featuring a reverse taper design and Model 2200 being springless.
  • Model 1800: Constructed from PVC with removable bonnet assembly, offering flow set points up to 6.0 GPM.
  • Model 2600: Features a patented clapper design for bypassing higher flow, with optional SPDT reed switches.
General Specifications: All models are calibrated to the National Bureau of Standards, with options for customization and various accessories available.
Applications: Designed for protecting pumps and bearings, coolant systems, HVAC equipment, machine tools, waste water monitoring, and lube oil systems. They automate flow monitoring and alarm activation.
Electrical and Mechanical Specifications: Details include switch ratings, resistive load capacities, and temperature ranges. Materials used include PVC, 316 SST, Viton, and polysulfone, each with specific temperature and pressure limits.
Installation and Adjustment: Provides installation instructions, emphasizing factory calibration and offering options for different port sizes and materials.
Additional Features: Highlights include factory replaceable switch capsules, shock and vibration approval, adjustable set points, high-temperature units, and optional accessories like relays and junction boxes.
Ordering Information: Includes easy ordering instructions and contact information for further consultation and customization.
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Catalog excerpts

FLOW SWITCH SELECTION GUIDE-2

Slandard Producl Seleclion Guide =o) Eo.9 oo)(! c =-x - so E O-o oLoC= -(do ^ tsoiDO o'{= E () =(gE(D EASY ORDERIIIG

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FLOW SWITCH SELECTION GUIDE-3

Slandard Producl Seleclion Guide 1500 EASY ORDENNA

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FLOW SWITCH SELECTION GUIDE-4

Slandard Produc] Seleclion Guide 2100 EASY ORDERINo 4 fl,.t!*t#,,:g,.,.,,!;p..g.,g :gf.f,:? lq;.,..,,.,

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FLOW SWITCH SELECTION GUIDE-5

FLOW SWITCH SELECTION GUIDE Calibrati0n: ll0w stands are calibraled to ihe National Bureau ol Standards and Th0mas Producls Ltd. recalibralion schedule. Serialization, documentalion relained on purchased malerials, processes, inspection, etc. Rsplaceable swilch capsule. Sall spray and acceleraled lile tesled. Naval Sea Syslems Command. Shock and vibralion approved. Listed oPL '16032 shipboard alarm 25% heavier wall lhickness, published bursl strenglh is deraled. lnspeclion using calibrated tools n Solutions tr Technical Support tr 0n-Time Delivery tr 0uality Welding: Thomas Producls Itd. cerlified...

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FLOW SWITCH SELECTION GUIDE-6

Please turn to our Compa ny Profile and level Switch Selection Guide to learn more of the advantages in specifying Thomas Products [td.@ sensors. Dimensional Data: STANDARD" Rugged and accurate flow detection for most applications. Machine Tool lndustry STRAIN RELIEF HVAC Equipment Shock and vibration approved. NPT SIZE BOTH PORTS See Note 10 Welding perlormed in low hydrogen environment. True globe-shaped housings yield lower P and minimize turbulence. Speclficationsr Hin*ing 'Sltuttla Reed switch shown in N0 FLOW condition, ORANGE sPoT, sHowil AT i{0 FLow FTOIU RATE.GPilI Switch Ratings......

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FLOW SWITCH SELECTION GUIDE-7

Please turn to our Company Protile and Leyel Switch Selection Guide to learn more of the advantages in specifying lhomas Products Ltd,@ sensors. 1. Standard flow calibration is in water 70oF. Calibrated on increasing flow. 2. Temperature effecl on flow water calibration, slight change; oil varies with viscosity. 3, Strain reliefs are standard. Optional silicone potting avail. Consult factory, stocked. Consult factory. 5. Relays for higher loads, junction boxes, terminal strips, etc. are available, See accessories section for details (See Page 28) 6. Optional cables available. 7. 0lher wetted...

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FLOW SWITCH SELECTION GUIDE-8

Please turn to our Company Protile and level Switch Selection Guide to learn more of the advantages in specifying Thomas Products Ltd.@ sensors. . Coolant Systems . HVAC Equipment . Machine Tool lnduslry Factory replaceable switch capsules. 1. Standard flow calibration is in water 2. Temperature effect on flow True globe-shaped housings yield lower -\P and minimize turbulence. water calibration, slight change; oil varies with viscosity. Oper. Temp. stocked. Consult factory. Relays for higher loads, junction boxes, terminal strips, etc. are available. See accessories section for details (See Page...

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FLOW SWITCH SELECTION GUIDE-9

Designed to help pass 100 micron 1. Standard flow calibration is in water increasing flow. 2. Temperature effect on flow water calibration, slight change; oil varies with viscosity. 3. Optional 100W SPST reed switches are stocked. Consult factory. 4. Relays for higher loads are available. bleed out particles. High pressure applications, 70"F with lead wires up. Calibrated on . Serviceable in line. . 0ptional petcock to continually See accessories section for details (See Page 28) Dimensional Data: Optional cables available. Consult factory, Reverse laper running bore, Other wetted materials:...

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FLOW SWITCH SELECTION GUIDE-10

Please turn to our Company Profile and level Switch Selection Guide to learn more of the advantages specifying lhomas Products [td.@ sensors. . Set points in water from .1 GPM to 1.5 GPlrl, . Set points in air lrom .06 SCFM to 8 SCFM. . Machine Tool lndustry . Lubrication Systems . Lasers Faclory replaceable switch capsules. Dimensional Data: lncreased piston lands are 0.0. ground. Hardened and lapped running bore. Reed switch shown in NO FLOW condition. SPDT, SHOWN Switch Ratinqs... Max Resistive Load PISTONS FOR BRASS OR 316 SST HOUSINGS: Switch Rating of UL Recognized Unit 20 VA: 120-240 VAC...

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FLOW SWITCH SELECTION GUIDE-11

o Water from 2 cc/min to 300 cc/min. Please turn to our Company Prolile and Level Switch Selection Guide to learn more of the advantages in specifying Thomas Products [td.@ sensors. Lubrication Systems 1. Standard flow calibration is in water Accurate low flow applications. Factory replaceable swilch capsules. 70oF with lead wires up. Calibrated on increasing flow. 2. Temperature effect on flow water calibration, slight change; oil varies with viscosity; gas, slight change. Set point accuracy will change slightly in other than calibrated position. Model 1600 is UL recognized with a SPST reed...

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FLOW SWITCH SELECTION GUIDE-12

Please turn to our Company Prolile and Level Snritch Selection Guide to learn more of the advantages in specifying lhomas Products Ltd.@ sensors. 1900 Switch assembly is silicone potted lor shock and vibration deadening. The "mini" small and accurate line flow switch detects low or high flow rates. Fixed actuations from .1 GPM to 1.5 1. Standard flow calibration is in water 70oF with lead wires up. Calibrated on increasing flow. 2. Temperature effect on flow water calibration, slight change; oil varies with viscosity. 3. Set point accuracy will change slightly in other than calibrated position....

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FLOW SWITCH SELECTION GUIDE-13

Please turn to our Company Profile and Leyel Switch Selection Guide to learn more of the advantages in specifying Thomas Products Ltd.@ sensors. Applicationsr Silicone potted for shock and vibration deadening. "Thomas Tube" designed for 1. Standard flow calibration is in water straight in line flow detection. 70oF with lead wires in horizontal position. Calibrated on decreasing flow. lndustry Standard Since 1986. 2. Set point accuracy will change slightly .5 GPM to 3.0 GPM in brass or stainless steel in other than calibrated position. Also available: Leads in different lengths, cable, terminated...

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FLOW SWITCH SELECTION GUIDE-14

Please turn to our Company Protile and level Switch Selection Guide to learn more of the advantages in specifying lhomas Products [td.@ sensors. Because we mold in.house, we can certify that our polysulfone flow Plastic configuration throughout. switches use only virgin material and runners are not introduced nor have color concentrates been added during processing that can hinder FDA requirements or additive leaching. Rugged yet economical flow switch for monitoring liquid flow or no flow conditions. Unique reverse taper design helps pass particulaies. Dimensional Datar llodel 2100 &2200 s/a"...

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