• 16-Channel ZEN-16

    Multi-channel isolated monitoring and control, ideal for a range of industries
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  • Process control

    Food processing, plastics/rubber, agricultural systems
    More

  • Define Instruments Launch Party

    In November 2011 we celebrated the official launch of our new company name. Click on the image to check out our photo gallery!

  • What’s New?

    We’re proud to have been recently identified as one of the top ten growing technology companies in the TIN100 2011 report!

All4-20mA / 0-10VAC MeasurementCommunicationsCounter / RateFlowHumidityInstrument Power Supply & ProtectionLoop PoweredTemperatureTransmittersWeighing
  • ZEN-16
    ZEN-16
    16-input Monitoring & Control Station
  • TM-2DLI
    TM-2DLI
    2-Wire Isolated Universal Transmitter (Loop Powered, Current Output)
  • TM-4DPI
    TM-4DPI
    4-Wire Isolated Universal Transmitter (User Powered, Current/Voltage Output)
  • TM-2HL
    TM-2HL
    2-Wire Non-Isolated Temperature Transmitter (Loop Powered, Current Output)
  • TM-2HLI
    TM-2HLI
    2-Wire Isolated Temperature Transmitter (Loop Powered, Current Output)
  • TM-USB
    TM-USB
    Transmitter Communications Kit
  • Multicom
    Multicom
    Universal Isolated USB Converter
  • OVP-100
    OVP-100
    Over Voltage Protection Unit
  • PSU-24
    PSU-24
    24V Power Supply
  • SC-CTR
    SC-CTR
    Quad (x1, x2, x4), NPN, PNP, TTL
  • SC-DEW
    SC-DEW
    Wet & Dry Bulbs – RTD Pt100 (385/392, 3 Wire)
  • SC-FLO
    SC-FLO
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • SC-PRC
    SC-PRC
    0-20mA or 4-20mA
  • SC-RTD
    SC-RTD
    RTD Pt100/Pt1000 (385/392/120/Cn10, 2-4 Wire)
  • SC-TC
    SC-TC
    Thermocouple (B/J/K/N/R/S/T Type)
  • SC-UAC
    SC-UAC
    Current (0-5A AC) or Voltage (0-300V AC)
  • SC-WEI
    SC-WEI
    4/6 Wire Strain Gauge (1-5mV/V)
  • SD-50X
    SD-50X
    4-20mA Loop Powered
  • LD-FLO
    LD-FLO
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • LD-PRC
    LD-PRC
    0/4-20mA or 0-2/10V
  • LD-RPM
    LD-RPM
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • LD-RTD
    LD-RTD
    RTD Pt100/Pt1000 (385/392/120/Cn10, 2-4 Wire)
  • LD-TC
    LD-TC
    Thermocouple (B/J/K/N/R/S/T Type)
  • LD-UAC
    LD-UAC
    Current (0-5A AC) or Voltage (0-300V AC)
  • TEX-BAR
    TEX-BAR
    0/4-20mA or 0-2/10V
  • TEX-CTR10
    TEX-CTR10
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • TEX-DEW200
    TEX-DEW200
    Wet & Dry Bulbs – RTD Pt100 (385/392, 3 Wire)
  • TEX-FLO10
    TEX-FLO10
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • TEX-PRC
    TEX-PRC
    0/4-20mA or 0-2/10V
  • TEX-TOTAL
    TEX-TOTAL
    0/4-20mA (Dual Totalizers)
  • PRO-CTR
    PRO-CTR
    Quadrature (x1, x2, x4), NPN, PNP, TTL
  • PRO-FLO200
    PRO-FLO200
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • PRO-PRC
    PRO-PRC
    4 x 0/4-20mA
  • PRO-RTD
    PRO-RTD
    4 x RTD Pt100 (385/392/Cn10, 3 Wire)
  • PRO-TC
    PRO-TC
    4 x Thermocouple (J/K/N/R/T Type)
  • PRO-WEI100
    PRO-WEI100
    4/6 Wire Strain Gauge (1-5mV/V)
  • 320 Series
    320 Series
    Panel meter controllers for small to medium systems
  • 380 Series
    380 Series
    Panel meter controllers for advanced systems
  • ICC-402 Series
    ICC-402 Series
    DIN-rail mount controllers with add-on modules
  • SC-320 Series
    SC-320 Series
    DIN-rail mount controllers with built-in LCD display
  • WM-402 Series
    WM-402 Series
    Wall mount controllers with built-in LCD or touch panel display
  • Input Modules
    Input Modules
    1-8 channel input modules for a variety of applications
AllCommunicationsDIN Rail ControllersInstrument Power Supply & ProtectionPanel Meters & ControllersTransmittersWall Mountable
  • ZEN-16
    ZEN-16
    16-input Monitoring & Control Station
  • ZEN-RIO
    ZEN-RIO
    ZEN-16 Expander: 16 x Digital Inputs, 16 x Relay Outputs
  • TM-2DLI
    TM-2DLI
    2-Wire Isolated Universal Transmitter (Loop Powered, Current Output)
  • TM-4DPI
    TM-4DPI
    4-Wire Isolated Universal Transmitter (User Powered, Current/Voltage Output)
  • TM-2HL
    TM-2HL
    2-Wire Non-Isolated Temperature Transmitter (Loop Powered, Current Output)
  • TM-2HLI
    TM-2HLI
    2-Wire Isolated Temperature Transmitter (Loop Powered, Current Output)
  • TM-USB
    TM-USB
    Transmitter Communications Kit
  • Multicom
    Multicom
    Universal Isolated USB Converter
  • OVP-100
    OVP-100
    Over Voltage Protection Unit
  • PSU-24
    PSU-24
    24V Power Supply
  • SC-CTR
    SC-CTR
    Quad (x1, x2, x4), NPN, PNP, TTL
  • SC-DEW
    SC-DEW
    Wet & Dry Bulbs – RTD Pt100 (385/392, 3 Wire)
  • SC-FLO
    SC-FLO
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • SC-PRC
    SC-PRC
    0-20mA or 4-20mA
  • SC-RTD
    SC-RTD
    RTD Pt100/Pt1000 (385/392/120/Cn10, 2-4 Wire)
  • SC-TC
    SC-TC
    Thermocouple (B/J/K/N/R/S/T Type)
  • SC-UAC
    SC-UAC
    Current (0-5A AC) or Voltage (0-300V AC)
  • SC-WEI
    SC-WEI
    4/6 Wire Strain Gauge (1-5mV/V)
  • SD-50X
    SD-50X
    4-20mA Loop Powered
  • LD-FLO
    LD-FLO
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • LD-PRC
    LD-PRC
    0/4-20mA or 0-2/10V
  • LD-RPM
    LD-RPM
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • LD-RTD
    LD-RTD
    RTD Pt100/Pt1000 (385/392/120/Cn10, 2-4 Wire)
  • LD-TC
    LD-TC
    Thermocouple (B/J/K/N/R/S/T Type)
  • LD-UAC
    LD-UAC
    Current (0-5A AC) or Voltage (0-300V AC)
  • TEX-BAR
    TEX-BAR
    0/4-20mA or 0-2/10V
  • TEX-CTR10
    TEX-CTR10
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • TEX-DEW200
    TEX-DEW200
    Wet & Dry Bulbs – RTD Pt100 (385/392, 3 Wire)
  • TEX-FLO10
    TEX-FLO10
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • TEX-PRC
    TEX-PRC
    0/4-20mA or 0-2/10V
  • TEX-TOTAL
    TEX-TOTAL
    0/4-20mA (Dual Totalizers)
  • PRO-CTR
    PRO-CTR
    Quadrature (x1, x2, x4), NPN, PNP, TTL
  • PRO-FLO200
    PRO-FLO200
    NPN, PNP, TTL, Namur, Tacho or Closed Contact Sensors
  • PRO-PRC
    PRO-PRC
    4 x 0/4-20mA
  • PRO-RTD
    PRO-RTD
    4 x RTD Pt100 (385/392/Cn10, 3 Wire)
  • PRO-TC
    PRO-TC
    4 x Thermocouple (J/K/N/R/T Type)
  • PRO-WEI100
    PRO-WEI100
    4/6 Wire Strain Gauge (1-5mV/V)
  • 380 Series
    380 Series
    Panel meter controllers for advanced systems
  • 320 Series
    320 Series
    Panel meter controllers for small to medium systems
  • ICC-402 Series
    ICC-402 Series
    DIN-rail mount controllers with add-on modules
  • WM-402 Series
    WM-402 Series
    Wall mount controllers with built-in LCD or touch panel display
  • SC-320 Series
    SC-320 Series
    DIN-rail mount controllers with built-in LCD display

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