Sensors/Transducers

Resistance Temperature Device (RTD) resistance-based temperature measurement

Model: U.S. Sensor PPG102C1 Transducer: voltage divider (R = 300 Ω) Wires: red – power (5 V), black – ground, blue – output voltage Response: linear

300 Ω resistor in voltage divider circuit

Thermistor resistance-based temperature measurement

Model: Vishay BCcomponents 2381-­‐640-64103 Transducer: voltage divider (R = 10000 Ω) Wires: red – power (5 V), black – ground, blue – output voltage Response: semi-log

10000 Ω resistor in voltage divider

circuit

Model: Senba GL5528 Transducer: voltage divider (R = 300 Ω) Wires: red – power (5 V), black – ground, blue – output voltage Response: log-log

300 Ω resistor in voltage divider circuit

Model: Honeywell HIH-4030 Transducer: none Wires: red – power (5 V), black – ground, blue – output voltage Response: linear

integrated transducer & signal conditioners

Photocell resistance-based luminescence measurement

Humidity Sensor capacitive-based humidity measurement

Sensors/Transducers

Model: Analog Devices ADXL335 Transducer: integrated Wires: red – power (3.3 V), black – ground, blue – output voltage (x-acceleration), white – output voltage (y-acceleration), green – output voltage (z-acceleration) Response: linear

Model: Freescale Semiconductor MPXH6400A Transducer: integrated Wires: red – power (5V), black – ground, blue – output voltage (port 1), white – output voltage (port 2) Response: linear

tube for port 1

3-Axis Accelerometer capacitance-based acceleration measurement

Pressure Transducer capacitance-based pressure/flow measurement

tube for port 2

integrated transducer & signal conditioners

integrated transducer & signal conditioners

Sensors/Transducers

Strain Gage resistance-based strain/deflection measurement

Sensors/Transducers

Model: Measurements Group CEA-13-125UW-120 Transducer: Wheatstone Bridge Wires: N/A Response: linear

input power

Reconfigurable Signal Conditioning Box reconfigurable junction box to generate amplified or filtered data

Signal Conditioners

BNC output port

BNC input port (+V)

BNC input port (-V)

various resistor & capacitor ports for multiple op/amp and filter configurations

Sensor Interface Box DC voltmeter and signal processor for multiple sensors

Voltmeters and Signal Processors

multiple input ports depending on sensor configuration multiple 3-pin output

connections to connect to external digital recording device

Advantages: portable, configured for class sensors, configured for 2 sensors, multiple connection styles, compatible with external recording Disadvantages: fixed resolution, voltmeter only

Advantages: portable, multiple measurement capabilities, multiple resolutions (low to high) Disadvantages: not configured for class sensors, single connection style, not compatible with external recording

Craftsman 82345 Handheld Multimeter meter and signal processor for multiple measurements

Voltmeters and Signal Processors

dial to select resistance, AC or DC voltage, current, or air temperature measurement

voltage, low current, resistance of temperature input

ground or reference line input

high current input

Hewlett-Packard 3468A Benchtop Multimeter meter and signal processor for multiple measurements

Voltmeters and Signal Processors

buttons to select resistance, AC or DC voltage, or current measurement inputs

Advantages: multiple measurement capabilities, very high resolution, 2- and 4-wire resistance measurement for high accuracy Disadvantages: not portable, not configured for class sensors, single connection style, not compatible with external recording

Advantages: high speed measurements up to 100 (MHz), extracts waveform, multiple channels, data recording Disadvantages: not portable, voltage measurements only

Tektronix TDS 3012B Digital Oscilloscope voltmeter and signal processor for high-speed measurements

Voltmeters and Signal Processors

output screen with signal waveform

inputs

Can interface with Sensor Interface Box to digitally record voltage output

Vernier LabQuest Sensor Box signal processor for multiple sensors

Voltmeters and Signal Processors

Tektronix PS282 DC Power Supply Used to apply DC power to an experimental apparatus – typically to drive a physical stimulus but

also for powering the measurement apparatus including the sensors, Signal Conditioning Box, and Sensor Interface Box

Power Supplies

connecting ports

BK Precision 4007DDS Function Generator Used to apply AC power to an experimental apparatus – typically to drive (or mimic) a physical

stimulus

Power Supplies

connecting ports

waveform selection