Frequency Input, Isolating Field Configurable Two-Wire Transmitter

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Frequency Input, Isolating Field Configurable Two-Wire Transmitter

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TRANSPAKT773
Frequency Input, Isolating Field Configurable Two-Wire Transmitter
Provides Isolated Current Loop Proportion Frequency Input
Benefits
Eliminates Ground Loops Digitally-Synthesized, Field Configurable Ranges (105Hz 18kHz) Wide Ranging Zero Span Adjustability Direct Magnetic Pickup Input Velocity/Flow Applications Protects Equipment with 1000VRMS Isolation
T773 isolating two-wire transmitter input ranges output ranges, which field selectable top-accessed switches. T773 accept square, triangle pulse waveforms 18KHz with amplitudes from 10mVrms peak-to-peak. T773 provides 1000Vrms transformer-coupled isolation with outputs either 4-20mA 10-50mA. Current outputs proportion selected frequency input. T773 zero "turn-up" span "turn-down" adjustments within user-selected input range. example, Range Table specifies 2100Hz with minimum span 420Hz (2100Hz 420Hz 1680Hz, 80%). This adjustability allows user field calibrate unit maximum range 2100Hz down minimum range 420Hz. maximum obtainable offset calibrated span: calibrated range 1000 offset 300Hz (e.g., 300Hz 1000Hz).
Application
T773 useful application requiring isolation 2-wire loop current from pulse output transducer, such magnetic pickup turbine flowmeter. output T773 used drive digital meter direct display flow velocity, interface with computer monitoring control applications. T773 approved intrinsically safe operation Class Division Groups hazardous locations when installed manufacturing drawing number.
Options
Urethane Coating internal circuitry protection from corrosive atmospheres.
Calibration
Factory settings are: Input Range: Output Range: 4-20mA Open access unit (see View Diagram). Select output range using switch CLOSED position selects 10-50mA output. OPEN position selects 4-20mA output. Select input range from Table configure switches through Determine percent span ratio desired maximum input input limit Table (e.g., 1000Hz/2100Hz 48%). step Span rotary switch desired percent span (e.g., position
Percent Span 100% Position
calibrator desired minimum adjust fine zero obtain output either 10mA. calibrator desired maximum adjust fine span obtain output either 20mA 50mA. Repeat steps necessary, maximum accuracy. Note: loop current "swings" input ranges 1-2, close extra filtering.
Table T773 Input Ranges
Range Key: Switch Position Input Limits 18KHz 9KHz 2100Hz 525Hz Closed Minimum Span 3600Hz 1800Hz 420Hz 105Hz
Field Mounting
T773 designed installation industrial field environments. sealed, diecast aluminum housing protects against corrosion, moisture, dust electrical noise such radio-frequency (RFI) electromagnetic (EMI) interference. protection against extreme moisture, hosedirected water (NEMA hazardous environments, T805 explosion-proof housing. T805 provides 1/2" 3/4" port operation harsh process environments. T805 certified Class Groups Class Groups hazardous locations.
T805 Explosion Proof Housing (Optional)
Determine Zero turn-up ratio desired minimum input desired maximum input (e.g., 0/1000Hz 0%). step Zero turn-up switch offset (e.g., position
Zero Turn-Up Position
Connect input calibrated frequency source. Connect output loop voltage supply monitor output current (refer terminal wiring).
View Diagram
Mounting Hardware
T805 Field Mountable Housing (EP, NEMA rated) 3/4" (Includes T903 Retainer Ring NEMA Gasket)
T773 Terminal Connections
Loop Output Loop Output Connection Input Frequency Input Frequency Shield (Case)
Note best common mode rejection, ground case (pin Note represents other device loads current loop.
Specifications
Input Span Range (Max/Min) Table Type: Capacitive coupled Minimum Amplitude: 105-2150Hz: 10mVrms >2150Hz: 15mVrms Maximum Amplitude: 35Vp-p Impedance 100-1KHz: Ohms >1KHz: >40k Ohms Output Span 4-20mA/10-50mA, switch selectable Minimum Output Current 3.3mA, typical Maximum Output Current 4-20mA: 24mA, typical 10-50mA: 58mA, typical Supply Voltage Range 4-20mA: 75VDC 10-50mA: 50VDC Line Regulation 0.07% span (13-75V) Load Regulation 0.05% span (0-3k Ohms) Voltage Drop 13VDC 20mA
Stability Zero:
±0.015% span/°C, typical, ±0.028%/°C, max. Span: ±0.022% span/°C, typical, ±0.043%/°C, max. Overall Accuracy (Includes Linearity, Hysteresis, Stability) ±0.2% adjusted span, max. Zero Adjustability "turn-up" span Span Adjustability "turn-down" full-scale limit (Table Repeatability ±0.05% span Response Time (63% response) <9KHz: 500mSec. >9KHz: 40mSec. Output Ripple, max. input range frequency; turn-down) Range 0.5% (18KHz) Range 0.5% (9KHz) Range 0.7% (2100Hz) Range 1.2% (525Hz)
Common Mode Rejection 60Hz: 97dB, 120dB Common Mode Range 60Hz: 75Vrms, max. 1KV, max. Effect (1.5W, 470MHz ft.) span error Isolation 1000Vrms maximum input output, input case, output case Operating Temperature Range 4-20mA: 80°C (-40 176°F) 10-50mA: 60°C (-40 140°F) Weight 0.58lbs Agency Approval approved intrinsically safe hazardous locations (File LR42272-70).
Models Accessories
Ordering Information
Specify: Model: T773-0000 Options: (Urethane coating) Optional Custom Factory Calibration: Specify C620 with desired input output range.
Dimensions
Dimensions millimeters (inches)
Accessories
Model M004 T902 T910 T805 Description Snap-in Channel Track, feet. Mounting plate M004, includes track. Bulkhead (flat surface) Mounting plate. Side feed field-mountable housing NEMA rated), uncoated (specify Option white polyester powder coat). AP9046 Action 24/40VDC 65mA Power Supply. T609 24V, 600mA Loop Power Supply. V565 3-1/2 digit remote loop-powered indicator, wide-ranging display, NEMA enclosure, approval standard, specify Option house TransPak
Factory Assistance
Eurotherm Controls additional information calibration, operation installation contact Technical Services Group:
actionsupport@eurotherm.com
721-0418-00-K 09/04 Copyright© Eurotherm, 2004
741-F Miller Drive Leesburg, 20175-8993 703-443-0000 info@eurotherm.com actionio.com
703-669-1318
Action Instruments
Barber-Colman
Eurotherm Chessell
Eurotherm Controls

Frequency Input, Isolating Field Configurable Two-Wire Transmitter

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