Honeywell 900ES1-0100

Model Series: 900ES Series — General Purpose Pressure Transmitter

Product Introduction:
The Honeywell 900ES1-0100 is a robust, analog pressure transmitter designed for general-purpose gauge pressure measurement in HVAC, process control, and building automation systems. It provides a 4–20 mA current output proportional to the measured pressure with a 316L stainless steel wetted diaphragm.

Category:
Description

Technical Specifications:

  • Part Number: 900ES1-0100
  • Pressure Range: 0 – 100 PSI (0 – 6.9 bar) gauge
  • Output Signal: 4–20 mA, 2-wire loop-powered
  • Accuracy: ±0.25% of full scale (±0.25 PSI at 100 PSI)
  • Supply Voltage: 12 – 36 VDC
  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)
  • Process Connection: 1/2″ NPT male (bottom or back)
  • Wetted Materials: 316L Stainless Steel diaphragm, Hastelloy C-276 internals
  • Electrical Connection: 1/2″ NPT conduit entry with cable gland
  • Enclosure Rating: NEMA 4X / IP66
  • Response Time: < 10 ms (90% step response)
  • Overpressure Rating: 150% of full scale (150 PSI)
  • Burst Pressure: 300% of full scale (300 PSI)

Functional Features:

  • Two-wire 4–20 mA output eliminates need for separate power supply
  • Zero and span adjustable via external push buttons or HART
  • 316L stainless steel diaphragm resists corrosion
  • Reverse polarity and overvoltage protection

Performance Parameters:

  • Zero Offset: ±1% of URL
  • Span Offset: ±1% of URL
  • Thermal Effect: ±0.02% of URL per °C
  • Long-Term Stability: ±0.1% of URL per year
  • EMC Compliance: EN 61326-1, IEC 61000-6-2

Structural Features:

  • Compact cylindrical body: 140 mm height × 50 mm diameter
  • 1/2″ NPT process connection (bottom-mounted)
  • Cable gland: 1/2″ NPT with PG9 thread
  • Two push buttons on top for zero/span calibration

Working Principle:
Applied pressure deflects the 316L stainless steel diaphragm. A piezoresistive Wheatstone bridge on the diaphragm converts the mechanical strain into a proportional milliamp signal. The onboard electronics condition and linearize the signal to a 4–20 mA output.

Key Advantages:

  • High accuracy (±0.25% FS) for general-purpose applications
  • NEMA 4X / IP66 rating for outdoor and washdown use
  • Two-wire loop power simplifies wiring
  • 316L wetted parts provide excellent chemical resistance

Applicable Industries: HVAC, building automation, water/wastewater, compressed air systems, general process control

Installation Requirements:

  • Mount with process connection pointing downward for liquid service
  • Use shielded twisted-pair cable (22–16 AWG)
  • Loop resistance must not exceed 600 Ω at 24 VDC
  • Torque process connection to 25 N·m

Usage Notes:

  • Zero calibration required after installation
  • Do not exceed 150 PSI process pressure
  • Verify loop power supply provides minimum 12 VDC at 20 mA
  • Calibrate annually to maintain ±0.25% accuracy
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