Model self contained, powered signal conditioner bridge type instrumen

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Model self contained, powered signal conditioner bridge type instrumen

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Model Bridgesensor
Model self contained, powered signal conditioner bridge type instrumentation. contains precision differential amplifier with filtered output highly regulated, noise, adjustable output bridge excitation source. What sets apart Bridge Balance high gain capability accurately condition load cell weighing systems with large tare offsets small live load signals. unit completely encapsulated rugged environments.
Complete Strain Gage Bridge Signal Conditioner 4-20 0-20 Output Output Capable Driving 1000 Loop Bridge Balance with Tare Offset Capability High Gain Amplifier; Accept Live Load Signals Provide Output Span Sufficient Excitation Current Five Load Cells Powered Unregulated Rugged Epoxy Encapsulated Design
Applications
Weighing with Load Cells Process Control Add-on Loops Intrinsically Safe Applications
Block Diagram
2401 Stanwell Drive Concord, 94520-4841 (510) 687-4411 (510) 687-3333
http://www.calex.com
CALEX FaxFACTS:
1997
Model Bridgesensor
Specifications
Output Current Span Input Span Zero Adjust Temperature Coefficient Hysteresis Amplifier Cell Sensitivity Volts Excitation) Linearity Temperature Stability Hysteresis Input Bias Current Input Noise: Common Mode Input Common Mode Rejection Output Current Loop Resistance Compliance Frequency Response Response Time 0.1% Bridge Excitation Supply Adjustment Range microamp/°C typical microamp/°C maximium microamp maximum
Getting Started with Model
This procedure large tare weights, i.e. greater than about cell's full scale rating. Hook Procedure Connect your load cell INPUT, Connect your load cell INPUT, Note: ±SENSE used your application, connections step need followed. SENSE going used, jumper them described steps
mV/V mV/V 0.005% typical ppm/°C 0.1% span maximum maximum microvolts maximum Volts minimum
Connect +Excitation, excitation your load cell jumper SENSE, +Excitation, Connect -Excitation, excitation your load cell jumper SENSE, -Excitation, Determine voltage power supply used adjust within volt range necessary before connecting power pins, Verify that hook procedure complete. Turn power supply check bridge excitation supply. Calibration Procedure GAIN SWITCH position others OFF. Short signal input pins together with clip lead. Adjust COARSE FINE OFFSET pots, zero output current. Note: Some models accept negative inputs. maximum negative current
1000 Volts maximum Hertz, Pole Filter typical
Volts Load Current maximum Stability ppm/°C maximum Hysteresis 0.1% Bridge Balance Adjust- (Tare Weight) With Load Cell ±68% Full Scale 3mV/V Sensitivity Requirements Input power supply isolated from amplifier reverse polarity protected. Volts 0.17A 0.7A 0.1A 0.35A Volt Volts input Volts above Volts input Volts .0033
Input Voltage Input Current with 150mA load with Bridge Hertz Ripple allowed input supply Isolation
Remove short between signal input pins, Adjust BRIDGE BALANCE zero output current. GAIN SWITCH expected load cell output. Adjust BRIDGE BALANCE zero output current. Apply live load cell adjust GAIN, desired output current. Remove live load COARSE FINE OFFSET pots zero output current.
1997
CALEX FaxFACTS:
NOTE: Specifications apply 55°C Volts input.
Repeat steps until desired settings obtained.
2401 Stanwell Drive Concord, 94520-4841 (510) 687-4411 (510) 687-3333
http://www.calex.com
Model Bridgesensor
Amplifier
built-in amplifier true differential input, noise, drift, instrumentation amplifier. high common mode rejection ratio (CMRR) provided with output offset that potentiometer adjustable. output offset pots adjust output zero current zero current also adjusted output. instrumentation amplifier gain switch which changes gain factors gain potentiometer fine adjustments. amplifier accepts input signals amplifier withstand input voltages Volts without damage. output amplifier filtered down using double pole Butterworth filter minimize effects high frequency electrical physical noise system. Model Bridge Balance which connected internally amplifier INPUT.
MODEL POWER INPUT
1000
Model Gain Switch
Bridge Output Signal for: Gain Switch Position "ON": 50mV 62.5mV 25mV 12.5mV 25mV
40mV 50mV 20mV 40mV 10mV 20mV 10mV 2.5mV
6.25mV 12.5mV 3.125mV 6.25mV
SUPPLY CURRENT
LOAD 150mA
Mechanical Specifications
LOAD 30mA
POWER SUPPLY VOLTAGE
Transducer Excitation
Transducer excitation provided adjustable, well regulated, noise power supply. excitation voltage adjustable means molded-in potentiometer which allows output voltage varied from Volts. capable supplying easily drive five load cells Volts. +Excitation supply remote sensing provisions wire configurations. sense lines minimize variations output voltage with changes load current lead resistance. supply output, +Excitation, connected through safety barrier sense lines will regulate voltage across bridge between volts. supply short circuit protection protect against short term faults. output recovers automatically from short circuit conditions once short removed.
Bridge Balance
Bridge Balance provides full scale tare weight adjustment when using ohm, mV/V load cell. then adjusted provide full span output with only about cell's range.
Screw Terminal
Function
Screw Terminal
Function
POWER -SENSE -EXCITATION +SENSE
2401 Stanwell Drive Concord, 94520-4841 (510) 687-4411 (510) 687-3333
http://www.calex.com
CALEX FaxFACTS:
POWER
+EXCITION CURRENT OUTPUT AMPLIFIER -INPUT +INPUT
1997
Terminal Strip Assignments

Model self contained, powered signal conditioner bridge type instrumen

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