500X Electro Pneumatic Transducer OEM Order
An order covering several configurations from the 500X I/P table in one shipment, rather than a single repeated part number.
Controlair Type Transducer 500X series I/P transducers, mixed configurations from the selection table
What The Customer Needed
The customer's valve population used more than one spring range, so a single output range would not have covered it. Splitting the order across suppliers would have produced units that looked alike but behaved differently.
How It Was Built
All configurations were taken from the same published table and built in the same run, so the instruments share a body, a mounting and a calibration method while differing only in the ordered range.
What The Photographs Show
Each configuration was calibrated to its own end points. The photographs show the mixed batch on the bench, with units of different ranges visible together before they were separated for packing.





How It Finished
A mixed-range shipment that behaves as one family in the field, with one set of brackets and one calibration procedure.
The Models Behind This Order
Controlair Type Transducer500X Electro Pneumatic Transducer
Controlair pattern I/P transducer, 4-20 mA in, 3-15 to 3-120 psi out
View specifications →
Controlair Type Transducer500X Electro Pneumatic Converter
Controlair pattern E/P converter, 0-5 V, 1-9 V and 0-10 V inputs
View specifications →
Controlair Type Transducer500AC Electro Pneumatic Transducer
500-AC configuration, 4-20 mA in, 3-15 psi out, 180 ohms
View specifications →
Controlair Type Transducer500ACD Electro Pneumatic Transducer
500-AC range with a plug-in electrical termination
View specifications →Questions About OEM Orders
Can this configuration be supplied under our own brand
Yes. Nameplates are printed to customer artwork and part numbering and checked against the build before fitting.
How is a batch kept consistent
The whole quantity is built in one run and calibrated consecutively on the same bench against the same standard current generator and 0.1 class pressure gauge.
What is the specification on this order
500X series I/P transducers, mixed configurations from the selection table.
Can we order a different range in the same body
Yes. The published selection table or coding system for this pattern lists the available input signals, output ranges and terminations.
Order The Same Configuration
Send the range, the termination and the quantity, and the quotation comes back against the published selection table for this pattern.
Marsh Bellofram Type Transducer
Fairchild Type Transducer
Flowserve Type Transducer
EPC Type Transducer