The 502A Series are rugged transducers designed for industrial applications requiring high-accuracy gas or liquid pressure measurements—within 0.1% of full scale—ranging from 1 to 15000 psi (70 mbar to 1000 bar).  Gage and absolute ranges above 15000 psi are available on request (contact the factory for information).

All units have welded stainless-steel construction and excellent long-term stability.  Gage units employ a special "True Gage" design with a second welded diaphragm that hermetically seals the strain gage circuitry while allowing the transducer to reference atmospheric pressure.  Models for absolute pressure measurement have an internal sealed "zero" reference.

General Specifications are given below.

	502A Gage Models
	502A Absolute Models

502A Series

* Autoclave AE F250-C for 15000-psi versions.

Measurement Type

True Gage* or Absolute

Measured Fluids

Gas, liquid

Wetted Parts Material

17-4 PH Stainless/15-5 PH Stainless

Case Material

17-4 PH Stainless

Bridge

Four-arm bonded foil gages, 350 Ω nominal

Insulation Resistance to Ground

5000 MΩ at 50 VDC

Excitation

10 VDC (calibration); up to 12 VDC or AC acceptable

Output (standard)**

Models 502A-1G and 502A-2G: 1 mV/V
All Other Models: 3 mV/V

Resolution 

Infinite

Accuracy 

±0.1% of full scale

Overload (safe) 

50% over capacity

Burst Pressure

Models 502A-1G through 502A-5000(G,A): 300% over capacity
Models 502A-7500(G,A) through 502A-10000(G,A): 200% over capacity
Model 502A-15000(G,A): 170% over capacity

Dead Volume

Models 502A-1G through 502A-5(G,A): 0.32 cubic inch
Models 502A-10(G,A) and 502A-15(G,A): 0.25 cubic inch
Models 502A-25(G,A) through 502A-1500(G,A): 0.17 cubic inch
Models 502A-2000(G,A) through 502A-15000(G,A): 0.12 cubic inch

Temperature Coefficient (Zero and Span)

±0.0025% of full scale/°F (±0.0045% of full scale/°C)

Compensated Temperature Range

+60° F to +160° F (+16° C to +71° C)

Operating Temperature Range

-100° F to +325° F (-73° C to +163° C)

Weight (nominal)

10 oz. (283 g)

* Gage pressure units greater than 500 psi (35 bar) are sealed at atmospheric pressure.

** Optional 0-5 VDC or 4-20 mA output is available (contact the factory for details).