The CL3515R is a portable precision calibrator/thermometer with a 4-digit LCD. It is designed to use external K/J/T/E/R/S/N/L/U/B/C type thermocouples as temperature sensors. MTI offers a complete selection of thermocouples, or we can custom-design parts to meet your specifications. The thermometer features a dual thermocouple input and an adjustable thermocouple offset. SPECIFICATIONS Features: 11 Types of Thermocouples: K, J, T, E, R, S, N, L, U, B, and C (in oC, oF, or K), and mV Signal Output USB and RS232 Interface with Windows Software (compatible with winXP, winVista and win7) NIST-Traceable Calibration Certificate with 13 Data Points (Included) 2 Channels for Thermocouple Temperature Measurement (T1 and T2) with Offset Adjustment Ergonomic Rotary Knob Allows for One-Handed Operation Thermocouple (Resolution) Measurement Range** According to temperature standard ITS-90. K: (0.1o) -200 to 1372 oC(-328 to 2501oF) J: (0.1o) -210 to 1200 oC(-346 to 2192 oF ) T: (0.1o) -250 to 400 oC(-418 to 752 oF ) E: (0.1o) -250 to 1000 oC(-418 to 1832 oF ) R: (1o) 0 to 1767 oC(32 to 3212 oF ) S: (1o) 0 to 1767 oC (32 to 3212 oF ) N: (0.1o) -200 to 1300 oC (-328 to 2372 oF ) L: (0.1o) -200 to 900 oC (-328 to 1652 oF ) U: (0.1o) -200 to 600 oC (-328 to 1112 oF ) B: (1o) 600 to 1820 oC (1112 to 3308 oF ) C: (1o) 0 to 2316 oC (32 to 4200 oF ) Accuracy: Thermocouple Types K/J/T/E/L/U: +/-(0.05% rdg + 0.5oC) -50 to 1372oC[+/-((0.05% rdg + 1.0 oF ) -58 to 2501oF] +/-((0.05% rdg + 1.0oC) -50 to -250oC[+/-((0.05% rdg + 2.0 oF ) -58 to -346 oF ] Thermocouple Type N: +/-((0.05% rdg + 1.0oC) -50 to 0 oC [+/-((0.05% rdg + 2.0 oF ) -58 to 32 oF ] +/-((0.05% rdg + 0.5oC) 0 to 1300oC[+/-((0.05% rdg + 1.0 oF ) 32 to 2372 oF ] Thermocouple Types R/S/B/C: +/-((0.05% rdg + 2oC) 0 to 1767oC[+/-((0.05% rdg + 4oF ) 32 to 3212 oF ] Thermocouple Simulation Range: Resolution: 0.1o (1o for R/S/B/C) Accuracy*: +/-(0.3oC + 10 uV) * Accuracy is specified for operating temperatures from 18 to 28oC (64 to 82 oF ) for 1 year, not including thermocouple error. mV Range: -25 to 75 mV Resolution: 10 uV Accuracy: +/-(0.025% + 1 digit Temperature Coefficient: 0.1 times the applicable accuracy specification per oC from 0 to 18 oC and 28 to 50oC (32 to 64oFand 82 to 122oF) Display 4-digit LCD with max reading of 19999 Input Connector Miniature thermocouple connector (SMP type) Power: 9V battery (included) Battery Life 17.5 hours nominal with low-battery indicator Dimensions 192 H x 91 W x 52.5 mm D(7.5 x 3.5 x 2.1") Weight 320 g (0.7 lb) Environmental Ambient Operating Ranges 0 to 50oC (32 to 122oF),