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Summary of Contents for Campbell 109B
- Page 1 109B & 109BAM Temperature Probe April 2010 Copyright © 2010 Campbell Scientific (Canada)Corp.
- Page 2 WARRANTY AND ASSISTANCE This equipment is warranted by CAMPBELL SCIENTIFIC (CANADA) CORP. (“CSC”) 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 are not warranted.
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Page 3: Table Of Contents
Model 109B & 109BAM Temperature Probe Table of Contents 1. General .................1 1.1 Specifications....................1 2. Accuracy...............2 3. Installation..............3 3.1 Soil Temperature ..................3 3.2 Water Temperature ...................4 4. Wiring................4 5. Programming ...............6 5.1 CRBasic ....................6 5.1.1 CRBasic Examples................6 5.1.1.1 Sample Program for CR200(X) Series Datalogger ....7 5.1.1.2 Sample Program for CR1000 Datalogger......7... -
Page 4: General
This will vary depending on the multiplexer configuration and the number of sensors measured. The model name 109B will be used in this manual to refer to both 109B and 109BAM probes, unless otherwise specified. The -L option on the model 109B-L Temperature Probe indicates that the cable length is user specified. -
Page 5: Specifications
Model 109B & 109 BAM Temperature Probe 1.1 Specifications Sensor: US Sensor Corp. PR103J23 Thermistor Temperature Measurement Range: -50° to +70°C Thermistor Inter- Typically <±0.2°C over 0°C to 70°C; ±0.5 @ -50°C changeability Error: Temperature Survival Range: -50°C to +100°C... -
Page 6: Installation
3. Installation 3.1 Soil Temperature The 109B is suitable for burial. Whenever possible it should be placed horizontally at the desired depth to avoid thermal conduction from the surface to the thermistor. The recommended maximum burial depth is equivalent to 86... -
Page 7: Water Temperature
3.2 Water Temperature The 109B can be submerged to 200 feet. Please note that the 109B is not weighted. Therefore, the installer should either add a weighting system or secure the probe to a fixed or submerged object. - Page 8 Model 109B & 109 BAM Temperature Probe TABLE 4-2. 109BAM, MUX & Datalogger Connections CR200(X) CR510 Multiplexer CR800 CR5000 Function Colour CR500 CR1000 CR23X Connection CR10(X) CR3000 109BAM (1,2,3) Black 1H terminal Excitation* 109BAM(1) Signal* White 1L terminal 109BAM(2) Signal*...
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Page 9: Programming
Fahrenheit, use a multiplier of 1.8 and an offset of 32. See Section 5.1.1 for example programs. The CR5000 and CR9000(X) use the BrHalf instruction to read the 109B’s resistance. The Steinhart-Hart equation is entered as an expression to convert the resistance to degrees Celsius. -
Page 10: Sample Program For Cr200(X) Series Datalogger
Model 109B & 109 BAM Temperature Probe 5.1.1.1 Sample Program for CR200(X) Series Datalogger 'CR200(X) Series Datalogger ‘This example program measures a single 109B 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:... -
Page 11: Sample Program For Cr1000 Datalogger & Am16/32B (4X16 Mode)
EndProg 5.2 Edlog In Edlog, Instruction 5 is typically used to measure the 109B’s 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... -
Page 12: Example Edlog Programs
Model 109B & 109 BAM Temperature Probe 5.2.1 Example Edlog Programs TABLE 5-2. Wiring for Example Programs Color Description CR10X Black Excitation Signal Purple Signal Ground Clear Shield 5.2.1.1 Example Program for CR10X ;{CR10X} *Table 1 Program 01: 1 Execution Interval (seconds) -
Page 13: Electrically Noisy Environments
AC power lines, pumps, and motors, can be the source of electrical noise. If the 109B probe or datalogger is located in an electrically noisy environment, the 109B probe should be measured with the 60 or 50 Hz rejection option as shown in the Examples in Section 5.4. -
Page 14: Measurement Details
6. Measurement Details Understanding the details in this section are not necessary for general operation of the 109B Probe with CSI'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. -
Page 15: Maintenance And Calibration
B = 2.341077x10 C = 8.775468x10 7. Maintenance and Calibration The 109B Probe requires minimal maintenance. Periodically check cabling for signs of damage and possible moisture intrusion. For all factory repairs and recalibrations, customers must get a returned material authorization (RMA). - Page 16 Model 109B & 109 BAM Temperature Probe Symptom: Unstable Temperature Try using the 60 or 50 Hz integration options, and/or increasing the settling time as described in Sections 5.3 and 5.4. Make sure the clear shield wire is connected to datalogger ground, and the datalogger is properly grounded.
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