Ashcroft RXL Differential Pressure Transmitter
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 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 | Table 7 |
| X | X | XXX | XX | XX | XXX | XXX |
| Table 1 | Type Configuration |
| R X | RXLdp |
| Table 2 | Accuracy/TC |
| 7 | 1.0%, ±0.025%/°F |
| Table 3 | Pressure Connection |
| MB2 | ¼ Barbed |
| MB1 | No Case OEM Option |
| MB8 | ⅛ Barbed |
| FO1 | ⅛ FNPT |
| Table 4 | Output Signal |
| 05 | 0/5 Vdc |
| 10 | 0/10 Vdc |
| 15 | 1/5 Vdc |
| 16 | 1/6 Vdc |
| 42 | 4-20mA |
| Table 5 | Output Connection |
| ST | Screw Terminal |
| Table 6 | Pressure Range |
| Compound | |
| 25IWL | ±25.00˝W.C. |
| Compound | |
| 10IWL | ±10.00˝W.C. |
| Compound | |
| 5IWL | ±5.00˝W.C. |
| Compound | |
| 2P5IWL | ±2.5˝W.C. |
| Compound | |
| 1IWL | ±1.0˝W.C. |
| Compound | |
| P5IWL | ±0.5˝W.C. |
| Compound | |
| P25IWL | ±0.25˝W.C. |
| Diff. or Gauge | |
| 2P5IW | 2.50˝W.C. |
| Compound | |
| P1WL | ±0.10˝W.C. |
| Diff. or Gauge | |
| 50IW | 50.00˝W.C. |
| Diff. or Gauge | |
| 25IW | 25.00˝W.C. |
| Diff. or Gauge | |
| 10IW | 10.00˝W.C. |
| Diff. or Gauge | |
| 5IW | 5.00˝W.C. |
| Diff. or Gauge | |
| 3IW | 3.00˝W.C. |
| Diff. or Gauge | |
| 2IW | 2.00˝W.C. |
| Diff. or Gauge | |
| 2IW | 2.00˝W.C |
| Diff. or Gauge | |
| 1P5IW | 1.5˝W.C |
| Diff. or Gauge | |
| 1IW | 1.00˝W.C. |
| Diff. or Gauge | |
| P75IW | 0.75˝W.C |
| Diff. or Gauge | |
| P5IW | 0.50˝W.C |
| Diff. or Gauge | |
| P25IW | 0.25˝W.C. |
| Diff. or Gauge | |
| P1IW | 0.10˝W.C. |
| Table 2 | Optional X-Variation |
| XRK | Back Plate Adapter |
| XRH | Calibration Report |
| XCE | CE Approval Option |
| XCL | Custom 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) | |
