Close   |    Next

Table AT1. Temperature calibration of DVTPP. A. Calibration coefficients for data loggers and thermistors. Channel T1 is the logger channel used to measure the thermistor. Rt′ = thermistor resistance in ohms. B. Actual thermistor calibration data.

Table AT1A. Calibration coefficients. (See table notes.)

Calibration
coefficient		 Logger 9367 Logger 9368
R1 251680.977 249507.092
k0 65564.0623 65534.6958
k1 65550.3036 65533.6013

Calibration
coefficient		 Thermistor 0226-3 Thermistor 0226-2
A 4.60148156E–04 4.52826700E–04
B 2.10947147E–04 2.11217111E–04
C 6.41209309E–08 6.19876025E–08

Notes: For Channel T1 calibration, Rt′ = R1 × (k1 – x)/[k0 – (k1 – x)], where x = T1 counts. For thermistor calibration (ohms to Kelvin [Steinhart and Hart]), 1/t = A + B × Ln(Rt′) + C × Ln(Rt′)3, where °C = K – 273.15.

Table AT1B. Temperature vs. resistance.

Serial
number		 Resistance (Ω)
0.000°C 50.000°C 100.000°C 150.000°C
0226-2 1666200 162749 27716 6963
0226-3 1602700 157535 26907 6781

Close   |    Next   |    Top of page