Specifications

31
temperature measurement
Tecal Accu-Temp II Laboratory Grade
Reference Thermometer
The Tecal Accu-Temp II is a high accuracy multi purpose digital thermometer for both platinum
resistance thermometers and thermocouples. Dual Channel input allows a probe on Channel B to be
calibrated against a standard on Channel A - directly compare any combination of PRT and Thermo-
couple. The Tecal Accu-Temp II supports 13 thermocouple types: B, E, J, K, N, R, S, T, D, C, l, U,
Au/Pt and both 3 and 4 wire 100 ohm Platinum resistance thermometers and RTDs.
- Accuracy of RTD and PRT measurement ±0.010 °C
- Accuracy of T/C measurement, better than ±0.1 °C
- 0.001 resolution for RTDs/PRTs and thermocouples
- 2 measuring inputs
- 13 thermocouples: B, E, J, K, N, R, S, T, D, C, l, U, Au/Pt
- T/C CJC internal or external
- Input of RTD coe cients: Calendar Van Dusen & ITS90
- Probe self-heat check
- Automatic current reversal for RTDs/PRTs
- Suitable for 3 and 4 wire RTDs/PRTs
- Units °C, °F, K, mV, ohms
- Math functions max/min, std. deviation & mean
- Data logging 4000 values
- Expandable by plugging in optional 4 input RTD or thermocouple scanner cards to 1 of 2 rear
panel slots available.
- RS232 talk/listen - included
- Rechargeable sealed lead acid battery: 8 hrs operation continuous
The powerful math function enables statistical analysis of the captured data, mean, max, min, peak
and standard deviation. The Tecal Accu-Temp II can be expanded by adding either a 4 input Thermo-
couple or 4 input PRT card into one of the two available slots in the rear of the unit. Ultimately, two
cards of the same type could be added to allow the measurement of up to 10 sensors of the same
type or one PRT as a reference and nine thermocouples. Each unit includes an RS232 cable, NIST
traceable calibration, instruction manual and mains cable. Combine the Tecal Accu-Temp II with one
of Techne’s secondary standard PRTs, a Techne Dri-Block calibrator, liquid calibration bath and
TechneWorks software to create a thermometer and sensor calibration system with high overall
accuracy.
Thermocouple Accuracy
Resolution Display Uncertainty @20 ºC Uncertainty @20 ºC Temperature
Type Range ºC ºC˚, ºF or K Resolution mV ºC 5± º 1 year ºC 5± º 60 days Coefficient /ºC
B +250 to +1820 0.001 1.0 ±(0.025% Rdg + 0.006% FS)* ±(0.02% Rdg + 0.006% FS)* 7 ppm Rdg + 6 ppm FS
C 0 to +2315 0.001 1.0 ±(0.075% Rdg + 0.005% FS) ±(0.05% Rdg + 0.005% FS) 7 ppm Rdg + 6 ppm FS
D 0 to +2315 0.001 1.0 ±(0.75% Rdg + 0.005% FS) ±(0.05% Rdg + 0.005% FS) 7 ppm Rdg + 6 ppm FS
E -200 to +1000 0.001 1.0 ±(0.026% Rdg + 0.004% FS) ±(0.01% Rdg + 0.004% FS) 7 ppm Rdg + 6 ppm FS
J -210 to +1200 0.001 1.0 ±(0.03% Rdg + 0.005% FS) ±(0.008% Rdg + 0.005% FS 7 ppm Rdg + 6 ppm FS
K -200 to +1372 0.001 1.0 ±(0.035% Rdg + 0.006% FS) ±(0.01% Rdg + 0.006% FS) 7 ppm Rdg + 6 ppm FS
N -200 to +1300 0.001 1.0 ±(0.035% Rdg + 0.005% FS) ±(0.01% Rdg + 0.005% FS) 7 ppm Rdg + 6 ppm FS
R -50 to +1768 0.001 1.0 ±(0.02% Rdg + 0.015% FS) ±(0.005% Rdg + 0.015% FS) 7 ppm Rdg + 6 ppm FS
S -50 to +1768 0.001 1.0 ±(0.02% Rdg + 0.015% FS) ±(0.005% Rdg + 0.015% FS) 7 ppm Rdg + 6 ppm FS
T -200 to +400 0.001 1.0 ±(0.025% Rdg + 0.015% FS) ±(0.005% Rdg + 0.015% FS) 7 ppm Rdg + 6 ppm FS
U -200 to +600 0.001 1.0 ±(0.025% Rdg + 0.015% FS) ±(0.005% Rdg + 0.015% FS) 7 ppm Rdg + 6 ppm FS
L -200 to +600 0.001 1.0 ±(0.03% Rdg + 0.005% FS) ±(0.008% Rdg + 0.005% FS) 7 ppm Rdg + 6 ppm FS
Au/Pt 0 to +1000 0.001 1.0 ±(0.02% Rdg + 0.015% FS) ±(0.005% Rdg + 0.015% FS) 7 ppm Rdg + 6 ppm FS
RTD & PRT Accuracy
Type Range °C Resistance Current Resolution Resistance Accuracy
°C, °F or K Typically @20°C ±
Pt100 -200 to 660 18 to 340Ω 0.5mA 0.001 0.001Ω 0.010
Pt100 660 to +800 340 to 450Ω 0.5mA 0.001 0.001Ω 0.020
Tecal Accu-Temp II