Campbell Manufacturing 109SS User's Manual
Contents
1. 4 5 1 Wiring for Example Programs ueessseseesseesneesneennennenneennennne nennen 5 5 2 Wiring for Example 7 Model 10955 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 sheath The rugged stainless steel sheath protects the thermistor allowing the 109SS to be buried or submerged in harsh corrosive environments It also has a fast time response This probe measures temperature from 40 C to 70 C The thermistor can survive temperatures up to 100 C but the overmolded joint and cable should not be exposed to temperatures greater than 70 C see Figure 1 1 Overmolded Joint Thermistor Encased in N Stainless Steel Sheath Santoprene Jacketed Cable FIGURE 1 1 109SS Temperature Probe The 109SS probe is typically used with the CR200 series CR800 CR850 CR1000 and CR3000 dataloggers which have a special instruction for measuring it The probe can also be measured with other Campbell Scientific dataloggers using generic measurement instructions The 109SS ships with 1 Resource CD Model 10955 Temperature Probe 1 1 Specifications NOTE Temperature Range 40 to 70 C Survival2. 1 3 5 1 1 CRBasic Examples TABLE 5 1 Wiring for Example Programs CR200 CR1000 Color Description CR5000 Black Excitation or VX1 Red Signal SEI Purple Signal Ground a Clear Shield Model 10955 Temperature Probe 5 1 1 1 Sample Program for CR200 Series Datalogger CR200 Series Datalogger This example program measures a single 10955 Thermistor Probe once a second and stores the average temperature every 10 minutes Declare the variable for the temperature measurement Public Air_Temp Define a data table for 10 minute averages DataTable AvgTemp 1 1000 Datalnterval 0 10 min Average 1 Air_Temp 0 EndTable BeginProg Scan 1 sec Measure the temperature Therm109 Air_Temp 1 1 Ex1 1 0 0 Call the data table CallTable AvgTemp NextScan EndProg 5 1 1 2 Example 2 Sample Program for CR1000 Datalogger 1000 Declare Variables and Units Public T109_C Units T109_C Deg Define Data Tables DataTable Table1 True 1 Datalnterval 0 10 Min 10 Average 1 T109_C FP2 False EndTable Main Program BeginProg Scan 1 Sec 1 0 Default Datalogger Battery Voltage measurement Batt_Volt 10955 Temperature Probe measurement 109 Therm109 T109_C 1 1 1 0 60 2 1 0 0 0 Call Data Tables and Store Data CallTable Table1 NextScan EndProg Model 10955 Temperature Probe 5 1 1 3 Sample Program for CR5000 CR5000 This
3. e E 1 1 1 ana 2 E 44002 3 3 Installation and Wiring 4 Burial iia is 4 3 2 508 4 O A A 4 5 Programming 4 Sel ERBaSIC hind Bene eisen rn 5 5 1 1 5 5 1 1 1 Sample Program for CR200 Series Datalogger 6 5 1 1 2 Example 2 Sample Program for CR1000 Datalogger 6 5 1 1 3 Sample Program for 5000 7 A 7 5 2 1 Example Edlog 7 5 3 Electrical Noisy Environment 9 3 4 Long Lead lengths ice aka 9 6 Measurement 10 7 Maintenance and 11 8 Troubleshooting 11 Figures 1 1 10955 Temperature 1 2 1 Steinhart Hiriart cda 3 2220 POSSIBLE Erro Guba 3 6 1 10955 Thermistor Probe 10 Tables 1 Connections to Campbell Scientific
4. to the Warranty and Assistance page for more information 8 Troubleshooting NOTE Symptom Temperature is NAN INF 9999 273 Verify the red wire is connected to the correct Single Ended analog input channel as specified by the measurement instruction the black wire is connected to the switched excitation channel as specified by the measurement instruction and the purple wire is connected to datalogger ground Symptom Incorrect Temperature Verify the multiplier and offset parameters are correct for the desired units Section 5 Check the cable for signs of damage and possible moisture intrusion For all factory repairs customers must get an RMA Customers must also properly fill out a Declaration of Hazardous Material and Decontamination form and comply with the requirements specified in it Refer to the Warranty and Assistance page for more information 11 Model 10955 Temperature Probe Symptom Unstable Temperature Try using the 60 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 12 Campbell Scientific Companies Campbell Scientific Inc CSI 815 West 1800 North Logan Utah 84321 UNITED STATES www campbellsci com info Ecampbellsci com Campbell Scientific Africa Pty Ltd CSAf PO Box 2450 Somerset West 7129 SOUTH AFRICA
5. BLE 5 2 Wiring for Example Program Color Description CR10X Black Excitation El Red Signal 5 1 Signal Ground AG Clear Shield G Model 10955 Temperature Probe Example Program for CR10X CR10X Table 1 Program 01 1 Execution Interval seconds 1 Half Bridge P5 Reps 2500 mV 60 Hz Rejection Range SE Channel Excite all reps w Exchan 1 mV Excitation 1 Mult Offset Re NOR ON 2 Z 1 X P42 1 1 XLoc V_Vx 2 2 1 3 Z X F P34 1 V ZLoc Vx_V_1 1 4 Z X F P37 1 3 XLoc Vx V1 2 24900 3 4 Z Loc Rtherm 5 Z LN X P40 1 4 X Loc Rtherm 2 5 ZLoc InRt 6 Z X F P37 1 XLoc InRt Z Loc Scal_InRt 7 Polynomial P55 Reps X Loc Scal_InRt F X Loc 1 son ee SON te 8 Z 1 X P42 1 7 XLoc 1 Tk 2 8 Z Loc Tk Model 10955 Temperature Probe 9 Z X F P34 1 8 X Loc Tk 2 273 15 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 P71 1 1 Reps 29 59 Loc Air Temp Table 2 Program 02 0 0000 Execution Interval seconds Table 3 Subroutines End Program 5 3 Electrical Noisy Environments AC power
6. IVANVIA NOLLDMALSNI Model 10955 Temperature Probe Copyright O 1983 2008 Campbell Scientific Inc 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 warranty CAMPBELL SCIENTIFIC INC s obligation under this warranty is limited to repairing or replacing at CAMPBELL SCIENTIFIC INC s option defective products The customer shall assume all costs of removing reinstalling and shipping defective products to CAMPBELL SCIENTIFIC INC CAMPBELL SCIENTIFIC INC will return such products by surface carrier prepaid This warranty shall not apply to any CAMPBELL SCIENTIFIC INC products which have been subjected to modification misuse neglect accidents of nature or shipping damage This warranty is in lieu of all other warranties expressed or implied including warranties of merchantability or fitness for a particular purpose CAMPBELL SCIENTIFIC INC is not liable for special indirect incidental or consequential damages Products may not be returned without prior authorization The following contact information is for US and International customers residing in countries served by Campbell Scientific Inc directly Affiliate companies handle repairs for customers within their territories Pleas
7. 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 Constant Fluid T Still Air 31 seconds Air 3 meter second 7 5 seconds Antifreeze Water Rolling 0 5 seconds Water submersion depth 50 feet 21 psi Linearization Error Steinhart amp Hart equation maximum error is 0 02 C at 40 C Maximum Lead Length 1000 ft Other Information Thermistor BetaTherm Micro BetaCHIP Probe 10K3MCD1 0 018 diameter 10Kohms at 25 C Probe stainless steel sheath 0 063 inch 0 16 cm diameter 2 3 inch 5 84 cm length overmolded joint 0 40 inch 1 02 cm diameter 1 67 inch 4 24 cm length Cable Santoprene 0 220 inch diameter Cable probe connection ATUM heat shrink Macromelt overmolded joint Weight 0 2 lbs 10 1 2 ft cable The black outer jacket of the cable is Santoprene rubber This compound was chosen for its resistance to temperature extremes moisture and UV degradation However this jacket will support combustion in air It is rated as slow burning when tested according to U L 94 H B and will pass FMVSS302 Local fire codes may preclude its use inside buildings 2 Model 10955 Temperature Probe The overall probe accuracy is a combination of the thermistor s interchangeability specification and the accuracy of
8. e visit www campbellsci com to determine which Campbell Scientific company serves your country To obtain a Returned Materials Authorization RMA contact CAMPBELL SCIENTIFIC INC phone 435 753 2342 After an applications engineer determines the nature of the problem an RMA number will be issued Please write this number clearly on the outside of the shipping container CAMPBELL SCIENTIFIC s shipping address is CAMPBELL SCIENTIFIC INC RMA 815 West 1800 North Logan Utah 84321 1784 For all returns the customer must fill out a Declaration of Hazardous Material and Decontamination form and comply with the requirements specified in it The form is available from our website at www campbellsci com repair A completed form must be either emailed to shanna campbellsci com or faxed to 435 750 9579 Campbell Scientific will not process any returns until we receive this form Ifthe form is not received within three days of product receipt or is incomplete the product will be returned to the customer at the customer s expense Campbell Scientific reserves the right to refuse service on products that were exposed to contaminants that may cause health or safety concerns for our employees CAMPBELL SCIENTIFIC INC does not accept collect calls 10955 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
9. 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 measurement thermistor resistance and In resistance Dim V_ Vx Rtherm InRt Define a data table for 10 minute averages DataTable AvgTemp 1 1000 Datalnterval 0 10 min 10 Average 1 Air_Temp IEEE4 0 EndTable BeginProg Scan 1 sec 5 0 Measure the 109 probe The result is V Vx BrHalf V_Vx 1 mV5000 3 Vx1 1 5000 True 0 60Hz 1 0 0 Calculate reistance RTherm 24900 1 V_Vx 1 Calculate the natural log of the resistance InRt Log Rtherm Apply the Steinhart and Hart equation and convert to degrees C in one step Air_Temp 1 1 129241e 3 2 341077e 4 InRt 8 775468e 8 InRt 3 273 15 Call the data table Call Table AvgTemp NextScan EndProg 5 2 Edlog In Edlog Instruction 5 18 typically used to measure the 10955 resistance Instruction 55 is used to apply the Steinhart and Hart equation Instruction 55 does not allow entering the coefficients with scientific notation In order to use this instruction with as much resolution as possible the In resistance term is pre scaled by 103 This allows the first order coefficient to be multiplied 103 and the 34 order coefficient to be multiplied 10 see Section 5 2 1 5 2 1 Example Edlog Program TA
10. fic s Short Cut Program Builder software You do not need to read this section to use Short Cut 5 1 CRBasic Model 10955 Temperature Probe The datalogger is programmed using either CRBasic or Edlog Dataloggers that use CRBasic include our CR200 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 Section 5 2 CRBasic and Edlog are included in our LoggerNet PC400 and RTDAQ software If applicable please read Section 5 3 Electrical Noisy Environments and Section 5 4 Long Lead Lengths prior to programming your datalogger Measurement details are provided in Section 6 In the CR200 series CR800 CR850 CR1000 and CR3000 dataloggers Instruction Therm109 is used to measure temperature Therm109 provides excitation makes a single ended voltage measurement and calculates temperature The Therm109 instruction has the following form Therm109 Dest Repetitions SE Chan Ex Chan Multiplier Offset A multiplier of 1 0 and an offset of 0 0 yields temperature in Celsius For Fahrenheit use a multiplier of 1 8 and an offset of 32 Sections 5 1 1 1 and 5 1 1 2 provide example programs that use the Therm109 instruction The CR5000 and CR9000 X use the BrHalf instruction to read the 109SS s resistance The Steinhart Hart equation is entered as an expression to convert the resistance to degrees Celsius see Section 5 1
11. lines pumps and motors can be the source of electrical noise If the 109SS probe or datalogger is located in an electrically noisy environment the 109SS probe should be measured with the 60 or 50 Hz rejection option as shown in the examples in Section 5 1 1 2 and Section 5 2 1 5 4 Long Lead Lengths Additional settling time may be required for lead lengths longer than 300 feet where settling time is the delay before the measurement is made For the CR200 series CR800 CR850 CR1000 and CR3000 the 60 and 50 Hz integration options include a 3 ms settling time longer settling times can be entered into the Settling Time parameter The example Therm109 instruction listed below has a 20 mSec 20000 uSec delay Therm109 Dest Reps SEChan ExChan SettlingTime Integ Mult Offset Therm109 T109_C 1 1 1 20000 60 2 1 0 0 0 In Edlog use the DC Half Bridge instruction P4 with a 20 millisecond delay as shown below Use P4 in place of P5 in Section 5 2 1 the instructions that follow P5 to convert the measurement result to temperature are still required Model 10955 Temperature Probe 1 Excite Delay SE P4 x 1 Reps 25 2500 mV 60 Hz Rejection Range Delay must be zero SE Channel Excite all reps w Exchan 1 Delay 0 01 sec units mV Excitation Multiplier Offset 1 2 3 4 5 6 de 8 9 6 Measurement Details Understanding the details in this section are not necessary for general
12. operation of the 10955 Probe with CST s dataloggers The Therm109 Instruction outputs a 2500 mV excitation and measures the voltage across the 24 9 K resistor Figure 6 1 The thermistor resistance changes with temperature EX BLACK ES Ne 2 10 THERMISTOR 1 224 9K 0 1 PURPLE 2 AG N Z G CLEAR FIGURE 6 1 10955 Thermistor Probe Schematic The measured voltage V is y y 4900 24 900 R Where Vex is the excitation voltage 24 900 ohms is the resistance of the fixed resistor and R is the resistance of the thermistor 10 Model 10955 Temperature Probe The resistance of the thermistor is V R Le The Steinhart and Hart equation is used to calculate temperature from Resistance T 01 A Bin Rr C In Rr Where Tx is the temperature in Kelvin The Steinhart and Hart coefficients used in the Therm109 instruction are A 1 129241x103 B 2 341077x104 8 775468x10 8 7 Maintenance and Calibration The 109SS Probe requires minimal maintenance Periodically check cabling for proper connections signs of damage and possible moisture intrusion For all factory repairs and recalibrations customers must get a returned materials authorization RMA Customers must also properly fill out a Declaration of Hazardous Material and Decontamination form and comply with the requirements specified in it Refer
13. the bridge resistor The Steinhart and Hart equation used to calculate temperature has a negligible error Figure 2 1 Ina worst case the errors add to an accuracy of 0 6 C over the range of 40 to 70 C and 0 49 C over the range of 20 C to 70 C The major error component is the interchangeability specification tolerance of the thermistor The bridge resistor has a 0 1 tolerance with a 10 ppm temperature coefficient Figure 2 2 shows the possible worst case probe and measurement errors Steinhart amp Hart Tabulated values 0 03 0 025 0 02 8 0015 D a 5 001 0 005 0 50 40 30 20 0 0 10 20 30 40 50 60 70 0 005 Temperature Degrees FIGURE 2 1 Steinhart and Hart Worst Case Errors in 109SS Temperature Measurement 074 1 Tolerance CR200 Bridge Measurement Error 0 06 of reading 2 4 mV 0 6 A 10 Bridge Measurement Error CR200 Resolution 0 5 mV 0 6 mV t 24 9 Ohm Fixed Resistor Tolerance 0 1 10ppm degC away from 25deg Possible Error Degrees 50 40 30 20 410 0 10 20 30 40 50 60 70 Temperature Degrees C FIGURE 2 2 Possible Errors Model 10955 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
14. to the thermistor Placement of the cable inside a rugged conduit may be advisable for long cable runs especially in locations subject to digging mowing traffic use of power tools or lightning strikes 3 2 Submersion 4 Wiring The 109SS can be submerged to 50 ft Please note that the 109SS is not weighted Therefore the installer should either add a weighting system or secure the probe to a fixed or submerged object such as a piling Connections to Campbell Scientific dataloggers are given in Table 4 1 Temperature is measured with one Single Ended input channel and a Voltage Excitation channel Multiple probes can be connected to the same excitation channel the number of probes per excitation channel is physically limited by the number of lead wires that can be inserted into a single voltage excitation terminal approximately six TABLE 4 1 Connections to Campbell Scientific Dataloggers CR200 CR800 CR5000 CR850 510 21 CR3000 CR500 CR7 Color Description CR1000 CR10 X CR23X Black Excitation Switched Switched Switched Voltage Voltage Voltage Excitation Excitation Excitation Red Temperature Single Ended Single Ended Single Ended Signal Input Input Input Purple Signal Ground AG Clear Shield G 5 Programming NOTE This section is for users who write their own datalogger programs A datalogger program to measure this sensor can be generated using Campbell Scienti
15. www csafrica co za cleroux 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 CSB Rua Luisa Crapsi Orsi 15 Butant CEP 005543 000 S o Paulo SP BRAZIL www campbellsci com br suporte campbellsci com br Campbell Scientific Canada Corp CSC 11564 149th Street NW Edmonton Alberta TSM 1W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Ltd CSL Campbell Park 80 Hathern Road Shepshed Loughborough LE12 9GX UNITED KINGDOM www campbellsci co uk sales campbellsci co uk Campbell Scientific Ltd France Miniparc du Verger Bat 1 rue de Terre Neuve Les Ulis 91967 COURTABOEUF CEDEX FRANCE www campbellsci fr info Ocampbellsci fr Campbell Scientific Spain S L Psg Font 14 local 8 08013 Barcelona SPAIN www campbellsci es info Ocampbellsci es Please visit www campbellsci com to obtain contact information for your local US or International representative
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