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M-100 Adjustable Flow Switch

Brand: Malema

The M-100 Series is an extremely sensitive flow switch. 

This has been engineering to monitor vital sample flow parameters for instrumentation in process control and inert blanket gases. 

It is used as an auxiliary alarm monitor for flow meters and is ideally suited for applications when installed on a by-pass for determination of filter plugging. 

Infinite adjustment permits detection and signaling of very low fluid flows with the added capability of detection in high flows.
Features
  • Field adjustable
  • Infinite flow range
  • For corrosive and non-corrosive liquids or gases
  • All-Teflon switch available
  • Extremely accurate and sensitive
  • Low pressure drop
  • Universal mounting available

Specifications

Brand

Accuracy

  • ± 10 % - Max.

Applications

  • Atmosphere Furnaces
  • CVD Tools
  • Gas & Liquid Analyzers
  • Vacuum Systems

Approvals & Certifications

  • CE
  • EMC Directive 89/336/EEC: EN 55011, Class B Radiated Emissions, EN 50082-1 (Immunity): IEC 801-2, Electrostatic Discharge Immunity, IEC 801-3, RF Electromagnetic Field Immunity
  • Low Voltage Directive (LVD) 73/23/EEC
  • UL (C,US)

Burst Pressure

  • psi: 160 to 5,000 (kPa: 1,103 to 34,470, bar: 11.03 to 344.7)

Current

  • Carrying Current: 0.5 A for SPDT
  • Carrying Current: 1.2 A for SPST

Deadband

  • 15 % of Set Point Differential

Electrical Connectors

  • Lead Wire: 24 to 18 AWG, 18” (457.2 mm)

Electrical Rating

  • 0.1 A at 120 Vac - General-Purpose (SPST, SPDT)
  • 0.1 A at 24 Vdc - Resistive (SPDT)
  • 0.25 A at 10 Vdc - Resistive (SPDT)
  • 0.25 A at 170 Vdc, 3 W/VA (AC/DC Resistive for SPDT)
  • 0.25 A at 24 Vdc - Resistive (SPST)
  • 0.25 A at 50 Vdc - Resistive (SPST)
  • 0.5 A at 200 Vdc, 10 W/VA (AC/DC Resistive for SPST)

Enclosure, Body Material

  • 316 Stainless Steel
  • Brass
  • Teflon (PTFE)

Flow Rate

  • 3-950 cc/minute - Calibration Range for Water
  • 50-60,000 Scc/minute - Calibration Range for Air

Hysteresis

  • 15%

Mounting

  • Universal Mounting
  • Vertical Mounting

NPT Connection

  • 1/4” NPT Female - Port Size
  • 1/8” NPT Female - Port Size

O-Ring Material

  • Buna-N
  • Teflon Encapsulated & Teflon
  • Viton

Operating Pressure

  • psig: 80 to 3,000 (kPa: 551.6 to 20,680 bar: 5.516 to 206.8) - Max.

Operating Temperature

  • 149° C (300° F) - Max.
  • -40° to 125° C (-40° to 257° F) - Reed Switch

Piston Material

  • 316 Stainless Steel with Epoxy
  • Teflon

Plug Material

  • 316 Stainless Steel - Endplugs
  • Brass - Endplugs
  • Teflon (PFA) - Endplug

Repeatability

  • ± 1 %, Max.

Screw Material

  • Teflon - Adjustment Screw (Wetted Part)

Spring Material

  • Stainless Steel

Switch Type

  • SPDT
  • SPST

Voltage

  • Breakdown Voltage: 200 Vdc for SPDT
  • Breakdown Voltage: 250 Vdc for SPST

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