Yodify Product Library
Instantly add the Series 668 Differential Pressure Transmitter and 50,000+ more product series to your store or catalog  
Book Your Demo and See How
or create your store

Series 668 Differential Pressure Transmitter

Brand: Dwyer Instruments, LLC

Our low cost SERIES 668 Differential Pressure Transmitter is capable of measuring low pressures with a ±1% accuracy - ideally suited for proper building pressurization and air flow control.

Transmitters can withstand up to 10 psig overpressure with no damage to the unit.

Variable capacitance sensor design provides excellent sensitivity and long-term stability.

Compact, lightweight design makes installation simple and easy. Units also feature reverse-polarity protection.
Features
  • Good accuracy at low pressure ranges provides exceptional value for insuring control and minimizing costly out of specification conditions
  • High overpressure rating eliminates possible damage to unit reducing unnecessary service time

1 - 12 of 53 Part Numbers
668-1
668-1
DWYER Differential Pressure Transmitter, Range 0-0.25" W.C.
  • Pressure Range - Inches WC: 0 to 0.25
  • Cover - No Cover
  • Certificates - No Additional Certifications
668-1-NISTCAL-PT1
668-1-NISTCAL-PT1
  • Pressure Range - Inches WC: 0 to 0.25
  • Cover - No Cover
  • Certificates - NIST Traceable Calibration Certificate
668-10
668-10
  • Pressure Range - Inches WC: 0 to ± 0.1
  • Cover - No Cover
  • Certificates - No Additional Certifications
668-10-NISTCAL-PT1
668-10-NISTCAL-PT1
  • Pressure Range - Inches WC: 0 to ± 0.1
  • Cover - No Cover
  • Certificates - NIST Traceable Calibration Certificate
668-11
668-11
  • Pressure Range - Inches WC: 0 to ± 0.25
  • Cover - No Cover
  • Certificates - No Additional Certifications
668-11-NISTCAL-PT1
668-11-NISTCAL-PT1
  • Pressure Range - Inches WC: 0 to ± 0.25
  • Cover - No Cover
  • Certificates - NIST Traceable Calibration Certificate
668-14
668-14
  • Pressure Range - Inches WC: 0 to ± 2.5
  • Cover - No Cover
  • Certificates - No Additional Certifications
668-14-NISTCAL-PT1
668-14-NISTCAL-PT1
  • Pressure Range - Inches WC: 0 to ± 2.5
  • Cover - No Cover
  • Certificates - NIST Traceable Calibration Certificate
668-17
668-17
  • Pressure Range - Inches WC: 0 to ± 25
  • Cover - No Cover
  • Certificates - No Additional Certifications
668-17-NISTCAL-PT1
668-17-NISTCAL-PT1
  • Pressure Range - Inches WC: 0 to ± 25
  • Cover - No Cover
  • Certificates - NIST Traceable Calibration Certificate
668-19
668-19
DWYER Differential Pressure Transmitter, Range 0-0.4" W.C.
668-2
668-2
DWYER Differential Pressure Transmitter, Range 0-0.5" W.C.
  • Pressure Range - Inches WC: 0 to 0.5
  • Cover - No Cover
  • Certificates - No Additional Certifications
1 - 12 of 53 Part Numbers

Specifications

Accuracy

  • ± 1 % Full Scale (RSS)

Approvals & Certifications

  • CE

Compensated Temperature

  • -18° to 65° C (0° to 150° F)

Electrical Connectors

  • Terminal Strip

Enclosure, Body Material

  • Fire Retardant Glass-Filled Polyester

Hysteresis

  • ± 1 % of Full Scale

Loop Resistance

  • 0 to 800 ohms

Media

  • Air
  • Non-Conductive Gases

NACE & NIST

  • NIST Traceable Calibration Certificate

Operating Temperature

  • -18° to 65° C (0° to 150° F)

Output

  • 4-20 mA, 2-Wire

Pressure Range

  • Inches WC: 0 to 100

Pressure Type

  • Differential

Response Time

  • < 60 milliseconds

Span & Zero Adjustments

  • ± 1 mA, Non-Interactive

Storage Temperature

  • -40° to 85° C (-40° to 185° F)

Supply Voltage

  • 12-30 Vdc

Temperature Effect

  • 0.018 % of Full Scale/°C
  • 0.033 % of Full Scale/°F

Tube Connection

  • 3/16” O.D. Fitting for 1/4” I.D. Tubing

  • Variable air volume systems
  • HVAC
  • Building management
Instantly populate your store or catalog 
CREATE YOUR SITE
or book a demo with the Yodify Team
show more