Model XLdp Ultra-Low Differential Pressure Transmitter

Brand: Ashcroft Inc.

The Ashcroft® XLdp Differential Transmitter uses patented Si-Glas™ technology which provides precise measurement and control at extremely low DP pressures. Since signal instability and drift are eliminated, this model is virtually unaffected by shock or vibration. 

An ideal choice when pressure measurement is needed.
Features
  • Certified 0.25% and 0.5% accuracy 
  • 0.1" to 50" H2O pressure ranges 
  • CE approved 
  • High overpressure protection 
  • NEMA 2 stainless steel construction 
  • Three output signals available 
  • Easy installation 
  • On-board voltage regulation allows use of lower cost, non-precise, unregulated power supply 
  • 9 point NIST traceable calibration certificate 

Specifications

Accuracy

  • ± 0.25% of Span
  • ± 0.5% of Span

Adjustment

  • Potentiometers: ± 10% of Full Scale

Applications

  • Breathing Apparatus Equipment
  • Fan Tracking
  • Filter Monitoring
  • Fume Hoods Control
  • HVAC Equipment
  • Lab/Clean Room Pressurization
  • Medical Lung Function
  • Very Low Velocity Measurements

Approvals & Certifications

  • CE
  • EMC Directive 2004/108/EC
  • IEC/EN 61326-1: Edition 1.0 Industrial, IEC/EN 61326-2-3: Edition 1.0 Annex BB Industrial

Burst Pressure

  • Overpressure Limits psid: 25 (kPa: 172.4, bar: 1.724)

Compensated Temperature

  • 2° to 57° C (35° to 135° F)

Current

  • Supply: < 6 mA for Voltage Output

Diaphragm Material

  • Silicone

Electrical Connectors

  • Screw Terminal

Enclosure, Body Material

  • 300 Series Stainless Steel

Environmental Protection

  • IP11
  • NEMA 2

Humidity

  • 10 to 95% Relative Humidity, Non-Condensing

Line Pressure

  • Maximum

Media

  • Clean, Non-Corrosive Dry Gases

Mounting Position Effect

  • 0.1" WC: ± 0.50% of Span/g
  • 0.25" WC: ± 0.25% of Span/g
  • 0.5" WC & Higher: ± 0.10% of Span/g

NACE & NIST

  • NIST

NPT Connection

  • 1/4" NPT Female

Operating Temperature

  • -29° to 71° C (-20° to 160° F)

Output

  • 1-5 Vdc, 3-Wire
  • 1-6 Vdc, 3-Wire
  • 4-20 mA, 2-Wire

Power

  • 12-36 Vdc

Pressure Range

  • Inches WC: -50 to 50

Pressure Type

  • Compound Pressure
  • Differential
  • Gauge

Proof Pressure

  • Overpressure Limits psid: 15 (kPa: 103.4, bar: 1.034)

Response Time

  • 250 milliseconds

Span & Zero Effect

  • Thermal Coefficients: ± 0.015% of Span / °F

Stability

  • Maximum

Storage Temperature

  • -40° to 82° C (-40° to 180° F)

Update Time

  • Warm-Up Time: 5 seconds, Maximum

Vibration Effect

  • Sweep: <± 0.05% of Full Scale (5 G at 0 to 60 Hz)
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