Model 743 Datasheet - SRP Control Systems
Model 743 Datasheet - SRP Control Systems
Model 743 Datasheet - SRP Control Systems
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<strong>Model</strong> <strong>743</strong>Outside Air Sensor• Unique design to provide accurate temperature indicationsof outside air.• PVC weather resistant housing and sun shield provideexcellent UV aging and corrosion resistance and are U/Llisted.• Integrated sun shield is designed to prevent ice buildupand eliminate incorrect readings caused by exposure todirect sunlight. Shield’s two slots allow efficient air flowacross the temperature sensor. This model is availablewith water resistant housing and the sensor is easily removed formaintenance.• Ideal for remote sensing when used in conjunction with theWeed Instrument Sensor-Mate ® Temperature Transmitter.Data Sheet2.4”1/2” PVC Connection1/2” PVC ShieldRemovable Sensor in3/16” OD Aluminum Tube ThermowellSpecifications:Element Type: Code PB Platinum RTD, 100 ohms @ 0ºC (32ºF), 0.00385 TCR (DIN B)PC Platinum RTD, 1000 ohms @ 0ºC (32ºF), 0.00385 TCR (DIN B)TMThermistor, 10,000 ohms @ 25ºC (77ºF)Max. Operating Temperature: 90ºC (194ºF)Sensor Lead Wire: RTD Three 24 AWG Teflon insulatedThermistor Two 20 AWG polyolefin insulatedInsulation Resistance:Minimum 100 megohms @ 100 VDC @ 21ºC (70ºF)Stability: RTD Typically, 0.26ºC (0.47ºF) over 5 yearsThemistor Typically, 1ºC (1.8ºF) over 5 yearsAccuracy: RTD ± 0.3ºC @ 0ºC (± 0.56 ºF @ 32ºF)Thermistor± 0.2ºC, from 0ºC to 87ºC (± 0.36 ºF, from 32ºF to 158ºF)With TransmitterAdd 0.1% of span (RTD only)www.weedinstrument.com
Code Outside Air Sensor<strong>743</strong>-PB RTD, 100 ohms @ 0ºC (32ºF) (DIN B)<strong>743</strong>-PC RTD, 1000 ohms @ 0ºC (32ºF) (DIN B)<strong>743</strong>-TM Thermistor, 10,000 ohms @ 25ºC (77ºF) - not available with transmitterAdd code “MT” for matched calibrated to transmitter. See RTD General Specifications.1 Code Housing- PVC weather resistant box - Industry StandardW Painted steel box with cover, NEMA 42For RTD assemblies with Sensor-Mate ® Temperature Transmitter<strong>Model</strong> Sensor-Mate ® Transmitter4150 100 ohm Pt RTD input/ 4-20mA output4154 1000 ohm Pt RTD input/ 4-20mA output3 Code Temperature Range( __ to __ ) Specify ºC or ºF4<strong>743</strong>-PB - / 4150 - (0º to 100ºF) Sample <strong>Model</strong> Number (RTD with Transmitter)Ordering Information HVAC <strong>Model</strong> <strong>743</strong><strong>743</strong>-PB -Sample <strong>Model</strong> Number (RTD without Transmitter)- - / - Your <strong>Model</strong> NumberPhone: (800) 880-9333 Fax: (512) 434-2901 indust@weedinstrument.com
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