T1500 Electro Pneumatic Converter Order
An order for the zero based build of the T-1500, the version that regulates output pressure down to 0 psig through an integral negative bias booster relay.
Marsh Bellofram Type Transducer Zero based T-1500 converters with integral negative bias booster relays
What The Customer Needed
The customer's final elements had to release completely. A conventional 3-15 psig transducer leaves residual pressure at the bottom of its range, which on a clamp or a brake means the device never fully lets go.
How It Was Built
The zero based build routes the transducer output through a bias relay, which both takes the output to zero and amplifies it, so the units regulate higher pressures than the standard range build as well.
What The Photographs Show
Because each zero based range has its own supply window, the supply was set for the ordered range before calibration rather than to a single site standard. The photographs show the batch with the supply manifold connected.





How It Finished
Final elements that release completely, from instruments whose supply requirement was settled before they reached site.
The Models Behind This Order
Marsh Bellofram Type TransducerT1500 Electro Pneumatic Converter
Zero based T1500 build, 0-15 to 0-120 psig, regulates down to 0 psig
View specifications →
Marsh Bellofram Type TransducerT1000 Electro Pneumatic Transducer
Force balance I/P transducer with a built-in volume booster, four build classes
View specifications →
Marsh Bellofram Type TransducerT1500 Electro Pneumatic Transducer
Compact force balance transducer, manifold mountable, 3-15 to 6-30 psig
View specifications →
Controlair Type Transducer500X Electro Pneumatic Transducer
Controlair pattern I/P transducer, 4-20 mA in, 3-15 to 3-120 psi out
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
Zero based T-1500 converters with integral negative bias booster relays.
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.
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