INSTRUCTION MANUAL CS500 Temperature and Relative Humidity Probe Revision: 7/04 C o p y r i g h t ( c ) 1 9 9 5 - 2 0 0 4 C a m p b e l l S c i e n t i f i c , I n c .
Warranty and Assistance The CS500 TEMPERATURE AND RELATIVE HUMIDITY PROBE is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.
CS500 Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections. 1. General ........................................................................1 2. Specifications .............................................................1 2.1 Temperature Sensor ..................................................................................1 2.2 Relative Humidity Sensor ................................
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CS500 Temperature and Relative Humidity Probe 1. General The CS500 Temperature and Relative Humidity probe contains a Platinum Resistance Temperature detector (PRT) and a Vaisala INTERCAP® capacitive relative humidity sensor. The -L option on the model CS500 Temperature and Relative Humidity probe (CS500-L) indicates that the cable length is user specified. This manual refers to the sensor as the CS500. 2.
CS500 Temperature and Relative Humidity Probe Error ( o C) Temperature Accuracy: 1.6 1.2 0.8 0.4 0 -0.4 -0.8 -1.2 -1.6 -40 -20 0 20 Temperature ( o 40 60 C) 2.2 Relative Humidity Sensor Sensor: INTERCAP® Relative Humidity Measurement Range: 0 to 100% non-condensing RH Output Signal Range: 0 to 1.
CS500 Temperature and Relative Humidity Probe The CS500 is held in place, within the 41003 or UT12VA Radiation Shield, via an adapter, Model 41381. The 41381 adapter is threaded onto the bottom of the CS500 (Figure 4). The 41004 12-Plate Radiation Shield, used with 207 probes, can be converted to a 41002 with P/N 6638. NOTE The black outer jacket of the cable is Santoprene® rubber. This compound was chosen for its resistance to temperature extremes, moisture, and UV degradation.
CS500 Temperature and Relative Humidity Probe Mounting Clamp FIGURE 2. CS500 and 41303 Radiation Shield FIGURE 3.
CS500 Temperature and Relative Humidity Probe Tripod Mast 41003 10-Plate Radiation Shield Lock nut tightens against adapter CS500 Internal threads secure the CS500 to adapter 41381 Adapter FIGURE 4. Radiation Shield, CS500, and 41381 Adapter Black Temperature Signal Brown Relative Humidity Signal Green Signal & Power Reference Red Power Clear Shield FIGURE 5.
CS500 Temperature and Relative Humidity Probe TABLE 1. Datalogger Connections Description Temperature Relative Humidity Signal & Power Reference Power Shield Color Black Brown Green CR23X/CR1000 Single-Ended Input Single-Ended Input G CR10(X), CR510 Single-Ended Input Single-Ended Input G 21X, CR7 Single-Ended Input Single-Ended Input Red Clear 12 V 12 V G 12 V 4. Wiring Connections to Campbell Scientific dataloggers are given in Table 1.
CS500 Temperature and Relative Humidity Probe TABLE 4. Wiring for CR1000 and CR10X Examples Description Temperature Relative Humidity Signal & Power Reference Power Shield Color Black Brown Green Red Clear CR1000 SE 1 SE 2 G 12 V CR10(X) SE 3 (2H) SE 4 (2L) G 12 V G 5.1 Example for CR1000 'CR1000 'Created by SCWIN (2.
CS500 Temperature and Relative Humidity Probe ;Measure the CS500 relative humidity. ; 02: Volt (SE) (P1) 1: 1 Reps 2: 5 2500 mV Slow Range 3: 4: 5: 6: 4 3 .1 0 SE Channel Loc [ RH_pct Mult Offset ;CR500 (2500 mV); CR23X (1000 mV); 21X, CR7 (5000 mV) ;Brown wire (SE 4), Green wire (G) ] ;See Table 3 for alternate multipliers ;Limit the maximum relative humidity to 100%.
CS500 Temperature and Relative Humidity Probe This voltage drop will raise the apparent temperature and relative humidity because the difference between the signal and signal reference, at the datalogger, has increased by Vd. The approximate error in temperature and relative humidity is 0.35°C and 0.35% per 100 feet of cable length, respectively. 7. Absolute Humidity The CS500 measures the relative humidity.
CS500 Temperature and Relative Humidity Probe Example 1. Sample CR10(X) Program that Computes Vapor Pressure and Saturation Vapor Pressure ;Measure the CS500 temperature. ; 01: Volt (SE) (P1) 1: 1 Reps 2: 5 2500 mV Slow Range 3: 4: 5: 6: 3 1 .1 -40 SE Channel Loc [ T_C Mult Offset ] ;Measure the CS500 relative humidity. ; 02: Volt (SE) (P1) 1: 1 Reps 2: 5 2500 mV Slow Range 3: 4: 5: 6: 4 2 .
CS500 Temperature and Relative Humidity Probe ;Compute the vapor pressure in kPa. ;Relative humidity must be a fraction. ; 07: Z=X*Y (P36) 1: 3 X Loc [ e_sat ] 2: 2 Y Loc [ RH_frac ] 3: 4 Z Loc [ e ] 8. Maintenance The CS500 Probe requires minimal maintenance. Check monthly to make sure the radiation shield is free from debris. The white screen at the tip of the probe should also be checked for contaminants. When installed in close proximity to the ocean or other bodies of salt water (e.g.
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Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za sales@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA) PO Box 444 Thuringowa Central QLD 4812 AUSTRALIA www.campbellsci.com.au info@campbellsci.com.au Campbell Scientific do Brazil Ltda.
