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15 

APPENDIX B. THERMISTOR TEMPERATURE DERIVATION 

 

Thermistor Type: YSI 44005, Dale #1C3001-B3, Alpha #13A3001-B3 

Resistance to Temperature Equation: 

T=

1

A+B

(

LnR

)

+C(LnR)

3

-273.15 °C

 

 

Equation 5 - Resistance to Temperature 

Where; 

T

 

=

 Temperature in 

°

C. 

LnR

 

=

 Natural Log of Thermistor Resistance 

A

 

=

 1.4051 

×

 10-3 

B

 

=

 2.369 

×

 10-4 

C

 

=

 1.019 

×

 10-7 

Note: Coefficients calculated over the 

50 to +150

°

 C. span. 

 

Ohms 

Temp 

Ohms 

Temp 

Ohms 

Temp 

Ohms 

Temp 

Ohms 

Temp  

201.1K 

-50 

16.60K 

-10 

2417 

+

30 

525.4 

+

70 

153.2 

+

110 

187.3K 

-49 

15.72K 

-9 

2317 

31 

507.8 

71 

149.0 

111 

174.5K 

-48 

14.90K 

-8 

2221 

32 

490.9 

72 

145.0 

112 

162.7K 

-47 

14.12K 

-7 

2130 

33 

474.7 

73 

141.1 

113 

151.7K 

-46 

13.39K 

-6 

2042 

34 

459.0 

74 

137.2 

114 

141.6K 

-45 

12.70K 

-5 

1959 

35 

444.0 

75 

133.6 

115 

132.2K 

-44 

12.05K 

-4 

1880 

36 

429.5 

76 

130.0 

116 

123.5K 

-43 

11.44K 

-3 

1805 

37 

415.6 

77 

126.5 

117 

115.4K 

-42 

10.86K 

-2 

1733 

38 

402.2 

78 

123.2 

118 

107.9K 

-41 

10.31K 

-1 

1664 

39 

389.3 

79 

119.9 

119 

101.0K 

-40 

9796 

1598 

40 

376.9 

80 

116.8 

120 

94.48K 

-39 

9310 

+

1535 

41 

364.9 

81 

113.8 

121 

88.46K 

-38 

8851 

1475 

42 

353.4 

82 

110.8 

122 

82.87K 

-37 

8417 

1418 

43 

342.2 

83 

107.9 

123 

77.66K 

-36 

8006 

1363 

44 

331.5 

84 

105.2 

124 

72.81K 

-35 

7618 

1310 

45 

321.2 

85 

102.5 

125 

68.30K 

-34 

7252 

1260 

46 

311.3 

86 

99.9 

126 

64.09K 

-33 

6905 

1212 

47 

301.7 

87 

97.3 

127 

60.17K 

-32 

6576 

1167 

48 

292.4 

88 

94.9 

128 

56.51K 

-31 

6265 

1123 

49 

283.5 

89 

92.5 

129 

53.10K 

-30 

5971 

10 

1081 

50 

274.9 

90 

90.2 

130 

49.91K 

-29 

5692 

11 

1040 

51 

266.6 

91 

87.9 

131 

46.94K 

-28 

5427 

12 

1002 

52 

258.6 

92 

85.7 

132 

44.16K 

-27 

5177 

13 

965.0 

53 

250.9 

93 

83.6 

133 

41.56K 

-26 

4939 

14 

929.6 

54 

243.4 

94 

81.6 

134 

39.13K 

-25 

4714 

15 

895.8 

55 

236.2 

95 

79.6 

135 

36.86K 

-24 

4500 

16 

863.3 

56 

229.3 

96 

77.6 

136 

34.73K 

-23 

4297 

17 

832.2 

57 

222.6 

97 

75.8 

137 

32.74K 

-22 

4105 

18 

802.3 

58 

216.1 

98 

73.9 

138 

30.87K 

-21 

3922 

19 

773.7 

59 

209.8 

99 

72.2 

139 

29.13K 

-20 

3748 

20 

746.3 

60 

203.8 

100 

70.4 

140 

27.49K 

-19 

3583 

21 

719.9 

61 

197.9 

101 

68.8 

141 

25.95K 

-18 

3426 

22 

694.7 

62 

192.2 

102 

67.1 

142 

24.51K 

-17 

3277 

23 

670.4 

63 

186.8 

103 

65.5 

143 

23.16K 

-16 

3135 

24 

647.1 

64 

181.5 

104 

64.0 

144 

21.89K 

-15 

3000 

25 

624.7 

65 

176.4 

105 

62.5 

145 

20.70K 

-14 

2872 

26 

603.3 

66 

171.4 

106 

61.1 

146 

19.58K 

-13 

2750 

27 

582.6 

67 

166.7 

107 

59.6 

147 

18.52K 

-12 

2633 

28 

562.8 

68 

162.0 

108 

58.3 

148 

17.53K 

-11 

2523 

29 

543.7 

69 

157.6 

109 

56.8 

149 

 

Table 2 - Thermistor Resistance Versus Temperature

 

55.6

 

150 

 

Содержание 6300

Страница 1: ... by any means without the written consent of Geokon The information contained herein is believed to be accurate and reliable However Geokon assumes no responsibility for errors omissions or misinterpretation The information herein is subject to change without notification Copyright 1995 2019 by Geokon Doc Rev Q 05 01 19 ...

Страница 2: ......

Страница 3: ...nnel There are no warranties except as stated herein There are no other warranties expressed or implied including but not limited to the implied warranties of merchantability and of fitness for a particular purpose Geokon is not responsible for any damages or losses caused to other equipment whether direct indirect incidental special or consequential which the purchaser may experience as a result ...

Страница 4: ......

Страница 5: ...403 READOUT BOX OBSOLETE MODEL 10 3 3 1 Connecting Sensors 10 3 3 2 Operating the GK 403 10 3 4 MEASURING TEMPERATURES 10 4 DATA REDUCTION 11 4 1 INCLINATION CALCULATION 11 4 2 TEMPERATURE CORRECTION 11 4 3 DEFLECTION CALCULATION 12 4 4 ENVIRONMENTAL FACTORS 12 5 TROUBLESHOOTING 13 APPENDIX A SPECIFICATIONS 14 A 1 VIBRATING WIRE TILT SENSOR 14 A 2 THERMISTOR SEE APPENDIX B ALSO 14 APPENDIX B THERM...

Страница 6: ...EMO CONNECTOR TO GK 404 8 FIGURE 9 LIVE READINGS RAW READINGS 9 FIGURE 10 DEFLECTION INTERVALS 12 FIGURE 11 SAMPLE MODEL 6300 CALIBRATION REPORT 18 TABLES TABLE 1 MODEL 6300 TILT SENSOR SPECIFICATIONS 14 TABLE 2 THERMISTOR RESISTANCE VERSUS TEMPERATURE 15 EQUATIONS EQUATION 1 CALCULATION OF TILT LINEAR 11 EQUATION 2 CALCULATION OF TILT POLYNOMIAL 11 EQUATION 3 TEMPERATURE CORRECTION 11 EQUATION 4 ...

Страница 7: ...e accurate measurement of inclination over segments in boreholes drilled into the structure being studied The continuous nature of the instrument allows for very precise measurement of changes in the borehole profile to be measured The instrument is installed in standard grooved inclinometer casing Figure 1 Figure 1 Model 6300 Tilt Sensor Assembly Plan View Sensor Housing Stationary Wheel Spring T...

Страница 8: ...mbly to be lowered into the casing Swivel joints are included to prevent the wheel assemblies from running out of the casing grooves due to spiral problems Stainless steel tubing is used to connect the transducer and wheel assemblies together and the whole string is normally supported from the top of the casing Biaxial systems use two transducers mounted at 90 to each other To prevent damage durin...

Страница 9: ...sistance between the gauge leads should be approximately 180 Ω 10 ohms Remember to add cable resistance when checking 22 AWG stranded copper leads are approximately 14 7Ω 1000 or 48 5Ω km multiply by two for both directions The resistance between the green and white leads varies with temperature Compare the measured resistance and ambient temperature to the factors shown in Table 2 in Appendix B T...

Страница 10: ...on set such that the A direction marked on the sensor is aligned on the same side as the fixed wheel on the wheel assembly Tilts in the positive direction yield increasing readings in digits Vibrating wire tilt sensors are shipped with a clamp screw holding the internal pendulum mechanism so that it is not damaged in shipment A label is attached to each sensor emphasizing the importance of removin...

Страница 11: ... sensor body at 90 clockwise from the upper sensor in plan looking down the casing This will be the B direction See Figure 6 Figure 6 Biaxial Sensor Orientation Note that there is some clearance around the bolt holes which will allow for some manual alignment of the sensors absolute alignment is not critical When the two sensors are connected the lower one is joined to the previously prepared gaug...

Страница 12: ...for the rest of the cable The cables from the lower sensors should be taped or tie wrapped to the assembly at intervals to support them as the system is built up and lowered down the borehole Continue to add gauge tubing sensors and wheel assemblies until the last sensor has been attached to the upper wheel assembly which is pre assembled to the top suspension Figure 7 The Top suspension can then ...

Страница 13: ...ely following this operation the seal screw should be replaced in the sensor 3 The sensor may now be lowered into the casing 2 4 Splicing and Junction Boxes Because the vibrating wire output signal is a frequency rather than current or voltage variations in cable resistance have little effect on gauge readings and therefore splicing of cables has little effect and in some case may be beneficial Fo...

Страница 14: ... sensor conductors with blue representing the shield bare To turn the GK 404 on press the ON OFF button on the front panel of the unit The initial startup screen will be displayed After approximately one second the GK 404 will start taking readings and display them based on the settings of the POS and MODE buttons The unit display from left to right is as follows The current Position Set by the PO...

Страница 15: ...s into place Connecting sensors with bare leads Attach the GK 403 2 flying leads to the bare leads of a Geokon vibrating wire sensor by connecting each of the clips on the leads to the matching colors of the sensor conductors with blue representing the shield bare 3 2 2 Operating the GK 405 Press the button labeled POWER ON A blue light will begin blinking signifying that the Remote Module is wait...

Страница 16: ...position B 2 Turn the unit on 3 The readout will display the vibrating wire output in digits The last digit may change one or two digits while reading 4 The thermistor reading will be displayed above the gauge reading in degrees centigrade 5 Press the Store button to record the value displayed If the no reading displays or the reading is unstable see Section 5 for troubleshooting suggestions The u...

Страница 17: ... second order curve to approximate the sine curve θ R2 A RB C degrees tilt Equation 2 Calculation of Tilt Polynomial Where A B and C are the coefficients supplied on the calibration report Calculate θ1 by substituting R R1 in the formula and then calculate θ0 by substituting R R0 then subtract to find the difference θ θ1 θ0 4 2 Temperature Correction The Model 6350 Tiltmeter has a slight temperatu...

Страница 18: ...L4 sinθ4 L5 sinθ5 Where for small angles sinθ R1 R0 G Equation 4 Horizontal Displacement Calculation Although the system is designed for use with continuous segments and pivots the sensors can be installed without interconnecting tubing in standard round tubing or pipe using special friction anchoring In those systems the assumption is made that the measured deflection occurs over the segment leng...

Страница 19: ... another tilt sensor If not the readout may have a low battery or be malfunctioning Symptom Tilt Sensor Fails to Read Is the cable cut or crushed This can be checked with an ohmmeter Nominal resistance between the two gauge leads usually red and black leads is 180Ω 10Ω Remember to add cable resistance when checking 22 AWG stranded copper leads are approximately 14 7Ω 1000 or 48 5Ω km multiply by t...

Страница 20: ...mm Weight 1 5 lbs 0 7 kg Materials 304 Stainless Steel Electrical Cable Two twisted pair four conductor 22 AWG Foil shield PVC jacket nominal OD 6 3 mm 0 250 Table 1 Model 6300 Tilt Sensor Specifications Notes Consult the factory for other ranges Depends on readout equipment With averaging techniques it is possible to achieve one arc second Derived using 2nd order polynomial 4 The output from the ...

Страница 21: ... 2 83 107 9 123 77 66K 36 8006 4 1363 44 331 5 84 105 2 124 72 81K 35 7618 5 1310 45 321 2 85 102 5 125 68 30K 34 7252 6 1260 46 311 3 86 99 9 126 64 09K 33 6905 7 1212 47 301 7 87 97 3 127 60 17K 32 6576 8 1167 48 292 4 88 94 9 128 56 51K 31 6265 9 1123 49 283 5 89 92 5 129 53 10K 30 5971 10 1081 50 274 9 90 90 2 130 49 91K 29 5692 11 1040 51 266 6 91 87 9 131 46 94K 28 5427 12 1002 52 258 6 92 8...

Страница 22: ...ively narrow band for these sensors to maximize the stability and resolution of the output The frequency band for the full range is shown on the calibration reports The frequencies can be determined from these The highest and lowest frequencies shown can be used to determine the sweep parameters After initial readings are obtained parameters should be set to 200 Hz below the resonant frequency and...

Страница 23: ...are supplied in a string connected together by pre determined lengths of cables specified by the customer The string of sensor is installed in a manner to that described in Section 2 The cable is connected via a 15 pin connector to a special Geokon Model 8021 1X datalogger modified by the addition of a Model 8031 Distributed Multiplexer specifically for use with the addressable system ...

Страница 24: ...18 APPENDIX E TYPICAL CALIBRATION REPORT Figure 11 Sample Model 6300 Calibration Report ...

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