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IXLdp Ultra-Low Differential Pressure Transducer

Data Sheet

All specifications are subject to change without notice. All sales subject to standard terms and conditions.

Ashcroft®, Si-Glas™, TruAccuracy™, Trust the Shield® are trademarks of Ashcroft Inc.

The following non-Ashcroft trademarks are the property of their respective owners: Lexan®.

For more information, see Ashcroft Brands & Trademarks ©2022 Ashcroft Inc. IXLdp_transducer_ds_RevC_10-24-22

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Output Signal:

4-20 mA (2-wire) 12-36 Vdc

0-5 Vdc (3-wire) 12-36 Vdc

1-5 Vdc (3-wire) 12-36 Vdc

1-6 Vdc (3-wire) 12-36 Vdc

±2.5 Vdc (3-wire) 12-36 Vdc

±5 Vdc (3-wire) 12-36 Vdc

Output signal is independent of power supply

changes: 12-36 Vdc range without effect on

output signal

PHYSICAL SPECIFICATIONS

Electrical Connection: 1/2˝ Female electrical conduit connections isolated

from the electronics. Separate access cover for

terminal connections

Environmental Rating: NEMA 4X

Process Connection:

1/4 NPT Female

HAZARDOUS SPECIFICATIONS

FM (OPT.) Approval: Intrinsically Safe: Class I, II, III Div. 1

Groups A, B, C, D, E, F and G when properly installed

with an approved FM intrinsically safe barrier.

Non-incendive: Class I, II and III Div. 2, Groups A, B,

C, D, E, F and G (4-20 mA output only)

The output signal is limited to 12-30 Vdc for

FM version units.

Consult Factory for: Other pressure range,temperature compensation,

packaging variations or response times

WETTED MATERIAL

Media:

Clean, dry air/gases compatible with Aluminum,

Titanium, PBT, Buna, Silicon, Glass, Gold, Silicone

RTV and Stainless steel

NOT FOR USE WITH LIQUIDS

NON-WETTED

Housing:

300 Series stainless steel

Ashcroft’s TruAccuracy™ specification is exclusively based on terminal

point methodology instead of statistically derived schemes like

‘best fit straight line’.

TruAccuracy™ means the Ashcroft IXLdp has ±0.25% of span accuracy

out of the box. Zero and span setting errors are already included in the

±0.25% of span accuracy spec. 

The IXLdp is ready to be installed with no additional calibration

adjustments required.

A unit from another manufacturer advertised as ±0.25% best fit

straight line may actually be a ±1.25% to ±2.25% device. Using best

fit straight line method, the accuracy spec does not include zero and

span setting errors, which can be as much as ±1.00% each.

What Does It Mean?

Featuring a highly reliable variable capacitance sensor using the

patented Ashcroft® Si-Glas™ sensor. This ultra-thin single crystal

diaphragm provides inherent sensor repeatability and stability.

SENSOR CROSS SECTION

Ashcroft® Si-Glas™ Sensor Technology

Sensor Cross Section

The silicon diaphragm sensor has no glues or

other organics to contribute to drift or mechanical

degradation over time.

LOAD LIMITATIONS 4-20 mA OUTPUT ONLY

Loop Suppl

y Voltage (Vdc)

0

10 12

20 24 30 36 40

0

250

500

750

1,000

1,250

1,091

OPERATING

REGION

545

V

min = 12V+ (0.022A x RL)

R

L

= R

S + RW

R

L

= Loop Resistance (ohms)

R

S = Sense Resistance (ohms)

R

W = Wire Resistance (ohms)