CS100 Barometric Pressure Sensor Instruction Manual Issued 16.9.08 Copyright © 2002-2008 Campbell Scientific Inc. Printed under Licence by Campbell Scientific Ltd.
Guarantee This equipment is guaranteed against defects in materials and workmanship. This guarantee applies for twelve months from date of delivery. We will repair or replace products which prove to be defective during the guarantee period provided they are returned to us prepaid.
PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: Length: 1 in2 (square inch) = 645 mm2 1 in. (inch) = 25.4 mm 1 ft (foot) = 304.8 mm 1 yard = 0.914 m 1 mile = 1.609 km Mass: 1 oz. (ounce) = 28.35 g 1 lb (pound weight) = 0.454 kg Pressure: 1 psi (lb/in2) = 68.95 mb Volume: 1 UK pint = 568.
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. Introduction .................................................................. 1 2. Specifications .............................................................. 2 2.1 Performance ............................................................................................. 2 2.1.1 Performance for “Standard” Range Option .......................
CS100 Barometric Pressure Sensor 1. Introduction The CS100 is a capacitive pressure transducer that uses the Setra's electrical capacitor technology for barometric pressure measurements over the 600 to 1100 millibar range. The transducer’s compact and rugged polyester housing with stainless backplate contains two closely-spaced, parallel, electrically-isolated metallic surfaces.
CS100 Barometric Pressure Sensor 2. Specifications 2.1 Performance 2.1.
Instruction Manual Current Consumption: Signal Output Warm-up Time: Response Time: Benefits: 3 mA nominal (operating mode) 1 µA quiescent (sleep mode) 0 to 2.5 Vdc <1 second from shutdown mode <100 msec Calibration NIST traceable Meets CE conformance standards 2.3 Physical Dimensions (Main Box): Weight: Mounting Hole Centres: Pressure Connector: NOTE 9.1 x 6.1 x 2.5 cm (3.6” x 2.4” x 1.0”) 135 g (4.8 oz) 7.
CS100 Barometric Pressure Sensor 4. Wiring 4.1 Datalogger Connection Before connecting the barometer to the datalogger, a yellow warning label must be removed from the pigtails (see Figure 2). The warning label reminds the user of the importance of properly connecting the barometer to the datalogger. Proper wiring is shown in Table 1. Yellow Warning Label Figure 2. CS100 as Removed from the Box Table 1.
Instruction Manual 4.2 5-pin Screw Terminal Plug Connector The datalogger connects to the CS100 via a 5-pin screw terminal plug connector. This connector is removable and may be replaced. The replacement connector may come with a connector key attached to it to ensure that the connector is plugged into the CS100 right side up (see Figure 3). When the connector is right side up, it will easily plug into the barometer. Figure 3.
CS100 Barometric Pressure Sensor In Program Example 2, the CR10X datalogger (Edlog datalogger) turns on the CS100 one minute before the top of the hour using a control port. On the hour the datalogger measures the CS100, and then it turns the CS100 off. 5.1 Conversion Factors In the example programs, the pressure is reported in millibars (mb).
Instruction Manual 5.3 Program Examples The CS100 wiring instructions for the example programs are shown in Table 4 below. Table 4. Wiring for Example Programs Wire Colour Blue Red Black Yellow Green Clear Description VOUT – Pressure Signal Out SUPPLY – 12 Vdc Power In GND – Power Ground AGND – Signal Ground ETX. TRIG. – External Trigger Shield CR10(X) SE6 12V G AG C8 G CR1000 SE15 12V G C4 G Example 1.
CS100 Barometric Pressure Sensor Example 2. Sample Program for CR10X (Edlog) Datalogger ;{CR10X} ; *Table 1 Program 01: 1 Execution Interval (seconds) ;Turn on CS100 one minute before the hour ; 1: If time is (P92) 1: 59 Minutes (Seconds --) into a 2: 60 Interval (same units as above) 3: 48* Set Port 8* High ;Measure CS100 at the top of the hour ; 2: If time is (P92) 1: 0 Minutes (Seconds --) into a 2: 60 Interval (same units as above) 3: 30 Then Do 3: Volt (SE) (P1) 1: 1 2: 15 3: 6 4: 1 5: 0.
Instruction Manual *Table 3 Subroutines End Program -Input Locations1 P_mb * Proper entries will vary with program and datalogger channel, and input location assignments. 5.4 Output Resolution When storing the values from the CS100 to a data table or to a datalogger’s final storage location, care must be taken to choose suitable scaling of the reading, or to store the value with adequate resolution to avoid losing useful resolution of the pressure measurement.
CS100 Barometric Pressure Sensor E(m) = E( ft ) 3.281ft m (2) The corrections involved can be significant: e.g. at 1000mb and 20°C, barometric pressure will decrease by 1.1mb for every 10 metre increase in altitude. 7. Maintenance and Calibration Since the sensor is semi-sealed, minimum maintenance is required: 1. Visually inspect the cable connection to ensure it is clean and dry. 2. Visually inspect the casing for damage. 3. Ensure that the pneumatic connection and pipe are secure and undamaged.
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.
