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Campbell TEMPERATURE PROBE 109SS Instruction Manual

Manual is about: Temperature Probe

Summary of TEMPERATURE PROBE 109SS

  • Page 1

    Model 109ss temperature probe revision: 12/10 c o p y r i g h t © 1 9 8 3 - 2 0 1 0 c a m p b e l l s c i e n t i f i c , i n c ..

  • Page 2: Warranty and Assistance

    Warranty and assistance the model 109ss temperature probe for harsh environments 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 warr...

  • Page 3: 109Ss Table of Contents

    109ss 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 1.1 specifications......................

  • Page 5: 1.  General

    Model 109ss temperature probe 1. General the –l portion of this probe’s model number indicates the probe has a user- specified lead length. For readability purposes, the probe will be referred to as the 109ss throughout this document. The 109ss consists of a thermistor encased in a stainless-steel s...

  • Page 6

    Model 109ss temperature probe 1.1 specifications temperature range: -40° to +70°c survival range: -50° to +100°c (thermistor); -50°c to +70°c (overmolded joint and cable) thermistor interchangeability tolerance: temperature tolerance -40°c ±0.6°c 0°c ±0.38°c 25°c ±0.1°c 50°c ±0.3°c 70°c ±0.45°c time...

  • Page 7: 2.  Accuracy

    Model 109ss temperature probe 2. Accuracy the overall probe accuracy is a combination of the thermistor's interchangeability specification and the accuracy of the bridge resistor. The steinhart and hart equation used to calculate temperature has a negligible error (figure 2-1). In a "worst case" the...

  • Page 8: 3.  Installation and Wiring

    Model 109ss temperature probe 3. Installation and wiring 3.1 burial the 109ss is suitable for shallow burial only. It should be placed horizontally at the desired depth to avoid thermal conduction from the surface to the thermistor. Placement of the cable inside a rugged conduit may be advisable for...

  • Page 9

    Model 109ss temperature probe the datalogger is programmed using either crbasic or edlog. Dataloggers that use crbasic include our cr200(x)-series, cr800, cr850, cr1000, cr3000, cr5000, and cr9000(x); see section 5.1. Dataloggers that use edlog include our cr10, cr10(x), cr23x, and cr7; refer to sec...

  • Page 10

    Model 109ss temperature probe 5.1.1.1 sample program for cr200(x) series datalogger 'cr200(x) series datalogger ‘this example program measures a single 109ss thermistor probe ‘once a second and stores the average temperature every 10 minutes. ‘declare the variable for the temperature measurement pub...

  • Page 11

    Model 109ss temperature probe 5.1.1.3 sample program for cr5000 'cr5000 'this example program measures a single 109 thermistor probe 'once a second and stores the average temperature every 10 minutes. 'declare the variable for the temperature. Public air_temp 'declare variables for the raw measureme...

  • Page 12

    Model 109ss temperature probe example program for cr10x ;{cr10x} ; *table 1 program 01: 1 execution interval (seconds) 1: ac half bridge (p5) 1: 1 reps 2: 25 2500 mv 60 hz rejection range 3: 1 se channel 4: 1 excite all reps w/exchan 1 5: 2500 mv excitation 6: 1 loc [ v_vx ] 7: 1.0 mult 8: 0.0 offse...

  • Page 13

    Model 109ss temperature probe 9: z=x+f (p34) 1: 8 x loc [ tk ] 2: -273.15 f 3: 9 z loc [ air_temp ] 10: if time is (p92) 1: 0 minutes (seconds --) into a 2: 10 interval (same units as above) 3: 10 set output flag high (flag 0) 11: real time (p77) 1: 110 day,hour/minute (midnight = 0000) 12: average ...

  • Page 14: 6.  Measurement Details

    Model 109ss temperature probe 1: excite-delay (se) (p4) 1: 1 reps 2: 25 2500 mv 60 hz rejection range (delay must be zero) 3: 1 se channel 4: 1 excite all reps w/exchan 1 5: 2 delay (0.01 sec units) 6: 2500 mv excitation 7: 3 loc [v_vx ] 8: .0004 multiplier 9: 0.0 offset 6. Measurement details under...

  • Page 15: 8.  Troubleshooting

    Model 109ss temperature probe the resistance of the thermistor is: ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − = 1 900 , 24 v v r ex t the steinhart and hart equation is used to calculate temperature from resistance: 3 )) (ln( ) ln( 1 t t k r c r b a t + + = where t k is the temperature in kelvin. The steinhart and hart coeffici...

  • Page 16

    Model 109ss temperature probe 12 symptom: unstable temperature try using the 60 hz or 50 hz integration options, and/or increasing the settling time as described in sections 8 and 9. Make sure the clear shield wire is connected to datalogger ground, and the datalogger is properly grounded..

  • Page 18

    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 • cleroux@csafrica.Co.Za campbell sc...