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Ashcroft RXL Differential Pressure Transmitter

Differential Pressure Transmitter
RXL

The Ashcroft® RXLdp transmitter introduces a variable-capacitance sensor using a glass-clad silicon chip. The patented Si-Glas™ technology combines the inherent high sensitivity of a variable capacitance transducer with the repeatability of a micro-machined, ultra-thin single crystal silicon diaphragm.

The Ashcroft Si-Glas sensor enables precise measurement and control of very low pressure. Although the ultra-thin silicon diaphragm deflects only a micron, the sensor is 100 times more sensitive to pressure than available silicon piezoresistive pressure sensors.

The Si-Glas sensor is composed of sputtered metals and glass molecularly bonded to silicon. There are no epoxies or other organics in the sensor to contribute to drift or mechanical degradation over time.

• 0.1˝-50˝-H₂O pressure ranges
• CE approval
• High overpressure protection
• Stainless steel & Lexan NEMA 1 construction
• Five types of output signals available
• Mounts inside standard 3 1/2˝ electrical box
• Board level OEM versions available
• On-board voltage regulation allows use of lower cost unregulated power supply

Select a link under the "item" tab below to order.

Table 1Table 2Table 3Table 4Table 5Table 6Table 7
XXXXXXXXXXXXXXX
Table 1Type Configuration
R XRXLdp
Table 2Accuracy/TC
71.0%, ±0.025%/°F
Table 3Pressure Connection
MB2¼ Barbed
MB1No Case OEM Option
MB8⅛ Barbed
FO1⅛ FNPT
Table 4Output Signal
050/5 Vdc
100/10 Vdc
151/5 Vdc
161/6 Vdc
424-20mA
Table 5Output Connection
STScrew Terminal
Table 6Pressure Range
Diff. or Gauge
P1IW0.10˝W.C.
Diff. or Gauge
P25IW0.25˝W.C.
Diff. or Gauge
P5IW0.50˝W.C
Diff. or Gauge
P75IW0.75˝W.C
Diff. or Gauge
1IW1.00˝W.C.
Diff. or Gauge
1P5IW1.5˝W.C
Diff. or Gauge
2IW2.00˝W.C
Diff. or Gauge
2P5IW2.50˝W.C.
Diff. or Gauge
2IW2.00˝W.C.
Diff. or Gauge
3IW3.00˝W.C.
Diff. or Gauge
5IW5.00˝W.C.
Diff. or Gauge
10IW10.00˝W.C.
Diff. or Gauge
25IW25.00˝W.C.
Diff. or Gauge
50IW50.00˝W.C.
Compound
P1WL±0.10˝W.C.
Compound
P25IWL±0.25˝W.C.
Compound
P5IWL±0.5˝W.C.
Compound
1IWL±1.0˝W.C.
Compound
2P5IWL±2.5˝W.C.
Compound
5IWL±5.00˝W.C.
Compound
10IWL±10.00˝W.C.
Compound
25IWL±25.00˝W.C.
Table 2Optional X-Variation
XRKBack Plate Adapter
XRHCalibration Report
XCECE Approval Option
XCLCustom calibration
PERFORMANCE SPECIFICATIONS
Accuracy Class (F.S.): 1%
Non-linearity
Best fit straight line (BFSL) ±0.6%
Hysteresis ±0.05%
Non-repeatability ±0.10%
Stability – Max. Change (F.S./year): ±0.5 %
Custom Ranges: Special range calibration, (XCL) – Consult factory
Standard Response Time: 250ms (factory set)
(Consult factory for damping options)
ENVIRONMENTAL SPECIFICATIONS
Temperature Limits: Storage: –40 to 180°F
Operating: 0 to 160°F
(10-95% R.H. noncondensing)
Compensated Range: 40 to 125°F
Thermal Coefficients: ZERO: ±0.025%F.S./°F
SPAN: ±0.025%F.S./°F
Vibration Sweep: Less than ±0.05%F.S. temporary effect with 5 g's 0-60Hz
EMC: CE model compliant to EN61326: 1997
Annex A. Harmonized heavy industrial transmitter specification
FUNCTIONAL SPECIFICATIONS
Overpressure Limits: Proof 15 psid
Burst 25 psi
Max. Static Line Pressure: 25 psi
Mounting Position Effect: 0.5˝ W.C. and higher 0.1% F.S./g
Below 0.5˝ W.C. 0.25% F.S./g
ELECTRICAL SPECIFICATIONS
Output signal is independent of power supply changes: 12-36 Vdc range without effect on output signal
Reverse Wiring Protected Zero Span Potentiometers: Externally accessible;
non-interactive
ZERO ±5%F.S.
SPAN ±3%F.S.
Supply Current: <6mA for voltage output
Warm-up Time: Five seconds max. to meet stated specifications
PHYSICAL SPECIFICATIONS
Pressure Connections: Stainless steel 1/8 NPF, 1/4˝ and 1/8˝ barbed connection
Electrical Connections: Terminal strip
Weight: 4.5 oz, NEMA 1 Case
MATERIALS: Case/Cap: Stainless steel/Lexan
Media: Clean, dry and noncorrosive gas (consult factory for use on other media)

HVAC, fume hood control, lab/clean room pressurization, laminar flow, leak detection, medical, fan tracking, glovebox and velocity measurements



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