Transducers Model 773 I/P Transducer with Active Circuit Introduction Features & Benefits Model 773D DIN rail and field mounting options offer easy, cost-effective installation Active circuit provides greater accuracy and low drift Direct or reverse action and split-ranging options provide application versatility Output trigger option ensures maximum sealing forces at the control valve Modular construction allows the transducer assembly to be changed without disturbing air lines, conduit, and mounting bolts Description The Model 773 Transducer with Active Circuit converts an electrical output to a proportional pneumatic output to drive a final control element. In addition, its active circuit constantly compares the pneumatic output to the input signal, ensuring high accuracy and low drift and providing stability during changes in supply pressure. Model 773F The Model 773 is typically used to operate a valve positioner or controller, and a built-in booster allows direct loading of some valve actuators. Optional versions can be field-set for direct or reverse action and split-range applications. The Model 773 also offers a trigger option that provides a minimum of 2 psi of full air supply when the input signal is 0 or 100%, ensuring maximum seating forces at the control valve. 6 The Model 773D is ideal for high-density applications where the I/Ps are located in a control room or general purpose area. It has two sets of supply/output connections for easy installation. Moreover, its electrical input terminals, and zero and span adjustments, are conveniently located on the front of the unit. The Model 773F is housed in an enclosure designed for a NEMA 4X (IP 65) environment that is intrinsically safe and explosion proof. It allows the electronic/pneumatic module within the enclosure to be removed via a single screw. As such, the conduit, air lines, and mounting bolts can remain intact during maintenance operations. Specifications Functional Specifications Mounting Model 773D: DIN Rail: Top Hat 35 mm (EN50 022) G-profile (EN50 035) Pipe/wall mounting Model 773F: Pipe/wall mounting Valve yoke mounting bracket Inputs 4-20 mAdc, 5.3 V drop max. Outputs 3-15, 3-27, 6-30 psig 0.2-1.0 bar 0.2-1 kg/cm2 20-100 kPa Input/Output Range (Split-Ranging; Input in % for 0-100% Output) 0-25%, 25-50%, 50-75%, 75-100% 0-50%, 25-75%, 50-100% Trigger Option Drives output to minimum output of 2.0 psig or supply for 0-100% of range Action 6.8 Selectable direct/reverse Transducers Model 773 I/P Transducer with Active Circuit Technical data Electrical Input Connection 773D: 3-position terminal block Wire Size: 14-22 AWG 773F: #6 screws with wire clamp Wire Size: 14-22 AWG Conduit: 1/2" NPT, 20 mm straight (optional) Pneumatic Supply Connection 773D: Two 1/4" NPT 773F: One 1/4" NPT Pneumatic Output Connection Two 1/4" NPT Pneumatic Vent Connection 773F: One 1/2" NPT Performance Specifications Reference Accuracy ± 0.25% of span Repeatability 0.05% of span Ambient Temperature Effect 0.03% per °F (70 to 185°F) Air Consumption 0.1 scfm (0.17 m3/h) Supply Pressure Effect None Maximum Supply Pressure 45 psig (3.1 bar) Supply Capacity 2.5 scfm max. (4.25 m3/h), 20 psig (1.38 bar) supply Exhaust Capacity 2.5 scfm max. (4.25 m3/h) Environmental Specifications Ambient Temperature Range -40 to 185°F (-40 to 85°C) Model Number I/P Transducer with Active Circuit I/P Transducer with Active Circuit • DIN-Mount • Field-Mount Input/Output Range • 4-20 mAdc input; 3-15 psig output • 4-20 mAdc input; 3-27 psig output • 4-20 mAdc input; 6-30 psig output • 4-20 mAdc input; 0.2-1.0 bar output • 4-20 mAdc input; 0.2-1.0 kg/cm2 output • 4-20 mAdc input; 20-100 kPa output Input/Output Feature • Fixed Range • Adjustable Range (Split-Ranging), Trigger Action, Direct/Reverse Acting Conduit Connection • Not Applicable (773D only) • 1/2"-14 NPT (3, 7, or 8 Hazardous Area Classifications) • 20 mm Straight Thread (7 or 8 Hazardous Area Classifications) Reserved for Future Use • Not Applicable Design Level • Current Design Hazardous Area Classification • Non-approved • FM/CSA - Explosion Proof/ Dust Ignition Proof Class I, Div. 1, Groups C & D. Class II, Div. 1 Groups E, F, G Class III, Div. 1 Intrinsically Safe - Class I, Div. 1, Groups A, B, C & D Class II, Div. 1, Groups E,F,G. Class III, Div. 1 Suitable For - Class I, Div. 2, Groups A, B, C, D. Class II, Div. 2, Groups E, F, G. Enclosure Type - 4X • FM/CSA Intrinsically Safe - Class I,Div. 1, Groups A, B, C & D Suitable For Class I, Div. 2, Groups A, B, C, D. • CENELEC Intrinsically Safe EEx ia IIC T4 - IP 20 (773D) Intrinsically Safe - EEx ia IIC T4 IP 65 (773F) • SAA Intrinsically Safe - Ex ia IIC T5 - IP 40 (773D). Intrinsically Safe - Ex ia IIC T5 - IP 66 (773F) Type N - Ex n IIC T4 - IP 40 (773D) Type N - Ex n IIC T4 - IP 66 (773F) Order No. 773■ ■ ■ -■ ■ ■ ■ ▲▲▲ ▲▲▲ ▲ D F 01 02 03 04 05 06 1 2 N 1 2 N A N 3 6 7 8 R Humidity 0-100% relative humidity, non-condensing Hazardous Area Classification See Model Selection 1) Basic input/output feature is specified at the time of order as fixed (1: fixed range) or adjustable (2: trigger option and adjustable range). The Model 773Fxx1 can be calibrated only in its basic range, with some tolerance. The Model 773Fxx2 can be calibrated in its basic range (with some tolerance) or in a splitrange. Direct/reverse action and output triggering (trigger option) are also furnished. 6.9 Transducers Model 773 I/P Transducer with Active Circuit Dimensional drawings Accessories Model 773D: P/N 15972-33 - Pipe/wall mounting bracket kit P/N 15972-81 - 35 mm top hat DIN rail (2m) Model 773F: P/N 15965-638 - Pipe/wall mounting bracket kit P/N 15972-91 - Valve yoke mounting bracket kit P/N 14870-21 - Customer tag (Max 4 lines of up to 20 characters each) Mounting Dimensions 6 6.10