Type XLdp Ultra-Low Differential Pressure Transducer / Transmitter

Certified 0.25 and 0.5% accuracy High overpressure protection Flame proof NEMA 2 stainless steel construction Three output signals Easy installation

The Ashcroft® XLdp is a variable capacitance sensor within a glassclad 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 silicon diaphragm. The Ashcroft Si-Glas sensor now 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 only 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. The glass-clad silicon diaphragm withstands extreme overpressure as well as severe shock and vibration.

PERFORMANCE CHARACTERISTICS Standard Ranges (Inches W.C.) Unidirectional Ranges: Differential or Gage 0/0.1 0/1.0 0/3.0 0/25.0 0/0.25 0/1.5 0/5.0 0/50.0 0/0.5 0/2.0 0/10.0   0/0.75 0/2.5 0/15.0   Bidirectional Ranges: Compound 0/0.5 0/1.0 0/5.0   0/0.1 0/2.0 0/10.0   0/0.25 0/2.5 0/25.0   0/0.5 0/3.0     Consult factory for nonstandard ranges. Accuracy Class (F.S.):    0.25% 0.5% Nonlinearity       Terminal Point* ±0.2 ±0.4   Best fit straight line(BFSL) ±0.15 ±0.3 Hysteresis ±0.02 ±0.02 Nonrepeatability ±0.03 ±0.05 Interchangability ±0.25% ±0.50% * Including hysteresis Stability: ±0.5%F.S./yr ENVIRONMENTAL CHARACTERISTICS Temperature Limits: Storage: -40 to +180°F Operating: -20 to +160°F (10-95% R.H. noncondensing) Compensated Range: -20 to +160°F Thermal Coefficients: ZERO ±0.015%F.S./°F SPAN ±0.015%F.S./°F

FUNCTIONAL CHARACTERISTICS Overpressure Limits (F.S.): Proof 15 psig Burst 50 psig Vibration Sweep: Less than ±0.1% F.S. temporarily effect with 5g's 0-60Hz Mounting Position Error: 0.5"W.C. and higher =<0.10F.S./g 0.25"W.C. =<0.25F.S./g 0.1"W.C. =<0.50F.S./g ELECTRICAL SPECIFICATIONS Output Signal: Power: 4-20mA (2-wire) 12-36 Vdc 1-5 Vdc (3-wire) 12-36 Vdc 1-6 Vdc (3-wire) 12-36 Vdc Response Time: 250msec (Consult factory for response time options) Resolution: Infinite Reverse Wiring Protected Warm-up time: less than one second Zero and Span Potentiometers: Externally accessible, noninteractive, ±10% F.S. adjustment Power Supply: Variations will not affect output signal Supply Current: <6mA vor voltage output

PHYSICAL CHARACTERISTICS Weight: 14 oz. NEMA 2 Case MATERIALS: Case: 300 Series stainless steel Pressure Connection Options: 1/4 barbed stainless steel two 1/4 NPTF stainless steel Notes: Consult Factory for use with media other than air or nonconducting gases OEM circuit board available (MB1) Calibration curve (0.25%) or data (0.50%) supplied with each transmitter Consult factory on other pressure range, temperature compensation or packaging variations

PART NUMBER FOR A TRANSDUCER/TRANSMITTER:
Select:	XL	3	F02	42	ST	P1IW
	Type (XLdp)	Accuracy (3) 0.25%, ±0.015%/°F (5) 0.50%, ±0.015%/°F	Pressure Connection (F02) ¼ NPT-F (MB2) ¼ Barbed (MB1) No Case	Output Signal (15) 1/5Vdc (16) 1/6Vdc (42) 4-20mA	Terminal Connection (ST) Screw Termination	Pressure Range Diff. or Gauge: (P1IW) 0.10"WC (P25IW) 0.25"WC (P5IW) 0.50"WC (P75IW) 0.75"WC (1IW) 1.00"WC (1P5IW) 1.50"WC (2IW) 2.00"WC (2P5IW) 2.50"WC (3IW) 3.00"WC (5IW) 5.00"WC (10IW)10.00"WC (25IW) 25.00"WC (50IW) 50.00"WC Compound: (P05IWL) ±0.05"WC (P1IWL) ±0.10"WC (P25IWL) ±0.25"WC (P5IWL) ±0.50"WC (1IWL) ±1.00"WC (2PIWL) ±2.00"WC (2P5IWL) ±2.50" (3IWL) ±3.00"WC (5IWL) ±5.00"WC (10IWL) ±10.00"WC (25IWL) ±25.00"WC (50IWL) ±50.00"WC