Model 083E Relative Humidity and Temperature Sensor 6/12 C o p y r i g h t © 2 0 1 2 C a m p b e l l S c i e n t i f i c , I n c .
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083E Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction..................................................................1 2. Cautionary Statements................................................1 3. Initial Inspection ..........................................................2 4. Quickstart .....................................................................2 4.
083E Table of Contents Table 7-1. 083E Sensor Wiring for Example Program ............................................ 9 8-1. Model 083E-1-X Temperature vs. Sensor Resistance ..........................
Model 083E Relative Humidity and Temperature Sensor 1. Introduction The 083E is a microprocessor controlled relative humidity and temperature sensor. Measurement ranges are 0 to 100% relative humidity and –50°C to 50°C. It is commonly used in association with wind farm power performance measurements on permanent met towers. Before using the 083E, please study • • • Section 2, Cautionary Statements Section 3, Initial Inspection Section 4, Quickstart More details are available in the remaining sections.
Model 083E Relative Humidity and Temperature Sensor 3. Initial Inspection • Upon receipt of the 083E, inspect the packaging and contents for damage. File damage claims with the shipping company. • The model number and cable length are printed on a label at the connection end of the cable. Check this information against the shipping documents to ensure the expected product and cable length are received. 4. Quickstart Figure 1-1 shows the 083E installed in a 41003-5 radiation shield.
Model 083E Relative Humidity and Temperature Sensor FIGURE 4-2. 41003-5 radiation shield mounted on a mast 3. Insert the sensor through the center of the hex plug at the bottom of the radiation shield. 4. Tighten the hex plug such that it compresses against the body of the 083E to hold it inside the radiation shield. 5. Attach the sensor cable to the connector on the bottom of the 083E. 6. Secure sensor cable to mast or crossarm with cable ties. 4.
Model 083E Relative Humidity and Temperature Sensor 4 2. Select a scan interval. 3. Select 083E Temperature and Relative Humidity Sensor and click the right arrow to add it to the list of sensors to be measured.
Model 083E Relative Humidity and Temperature Sensor 4. Define the name of the public variables. Variables default to AirTC and RH that hold the air temperature and relative humidity measurements. Select the desired units of measure. Units default to Deg C. 5. Sensor connections to the CR1000 datalogger are shown in the Wiring tab.
Model 083E Relative Humidity and Temperature Sensor 6. Select the desired output data for final storage and click Finish. 7. A full description of sensor wiring can be found by selecting Wiring Diagram at the left of the Short Cut window. Send the program from the PC to the CR1000 datalogger if telecommunications link is active. 5. Overview The 083E is a microprocessor-controlled relative humidity and temperature sensor.
Model 083E Relative Humidity and Temperature Sensor 6. Specifications Features: • Relative humidity sensing element: thin film polymer capacitor • Temperature sensing element: thermistor Compatibility Dataloggers: Measurement Ranges RH: Temperature: Accuracies RH: Temperature: Response RH: Temperature Operating: Compensation: CR800 series CR1000 CR3000 0 to 100% relative humidity -50° to 50°C (-58° to 122°F) ±2.0% from 0 to 100% RH ±0.10° C (0.
Model 083E Relative Humidity and Temperature Sensor large paved areas. Protect sensors from thermal radiation and ensure adequate ventilation. Standard measurement heights: 1.5 m (AASC) 1.25 to 2.0 m (WMO) 2.0 m (EPA) See Section 10, References for a list of sources that discuss temperature and relative humidity sensors and siting. 7.2 Mounting FIGURE 7-1.
Model 083E Relative Humidity and Temperature Sensor 7.
Model 083E Relative Humidity and Temperature Sensor 'CR1000 program to measure 083E-L Public MetOne_083E_Temp Public MetOne_083E_RH DataTable(Table1,True,-1) DataInterval(0,10,Min,10) Average(1,MetOne_083E_Temp,FP2,False) Sample(1,MetOne_083E_RH,FP2) EndTable 'Main Program BeginProg Scan (5,Sec,1,0) 'MetOne 083E Temperature in Degrees C BrHalf (MetOne_083E_Temp,1,mV2500,8,Vx1,1,2000,True ,0,_60Hz,-178.89,105.99) 'MetOne 083E Relative Humidity VoltSe (MetOne_083E_RH,1,mv2500C,2,1,0,_60Hz,0.
Model 083E Relative Humidity and Temperature Sensor 8.2 Limitations of RH Measurements at Below Freezing Temperatures The relative humidity measurement is referenced to saturated water vapor pressure above liquid water.
Model 083E Relative Humidity and Temperature Sensor 8.3 Temperature Table The temperature sensor is a resistive device. A resistance measurement across the red and black leads of the 083E should equal the resistances listed in Table 8-1 at the stated temperatures. TABLE 8-1. Model 083E-1-X Temperature vs.
Model 083E Relative Humidity and Temperature Sensor 9. Maintenance and Troubleshooting 9.1 Maintenance Schedule The 083E is designed to operate for an extended period with minimum maintenance. However, it can be damaged by untrained personnel attempting disassembly or calibration. 6 – 12 Month Intervals: • Inspect the sensor for proper operation per Section 8.1, Sensor Verification.
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