Hart

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HART. A stag or male deer of the forest five years old complete.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
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Series SEN-420, 4-20 mA transmitters available with Factory Mutual Approval for use in Class I, Div 1 locations requiring intrinsically safe performance in potentially explosive atmospheres.
Optional 4-20 mA output available on all indicators.
Optional 4-20 mA output is available on all indicators.
The Model 41a precision tension/compression load cell features an internally amplified, high-level 4-20 mA or 0-5 V dc output, a low-profile "pancake" design, and CEN-ELEC, FM, CSA, and CE approvals.
* PT460 amplified-output pressure transducer for long-distance transmission without noise interference; easier interface with PLCs or computer-based extruder control systems and 4-20 mA, 2-wire; 0-5 VDC, 4-wire; 1-6 VDC, 3-wire; 0-10 VDC, 4-wire; or 1-11 VDC, 3-wire outputs.
Series units feature all stainless steel housings; SAE-AISI4130 flange material: 718 Inconel wetted parts with optional Inconel or Hastelloy inlay; 4-20 mA outputs; [+ or -]0.2% FSO static accuracy ([+ or -]0.1% FSO optional); and an API rated flanged process connection, in sizes ranging from 21/6 to 41/16 in.
* A choice of loop powered (4-20 mA) or low power (1-5 VDC) output.
Available 24 VDC four-channel analog input modules with 13-bit resolution include 0-20 mA current input and 0-10V voltage input versions, priced at $89; 12-bit resolution four-channel output modules in 4-20 mA current and 0-10V voltage versions are priced at $119.
The Echo transducers are said to provide the industry standard 3.33 mV/V, 4-20 mA and voltage signals designed to work with most pressure indicators.
All models provide simultaneous linear outputs of 0-10 VDC and 4-20 mA. To improve the resolution of a PLC or data system, the 4-20 mA signal can be changed in the field to spans of either 0 to 1.