Portable Chub-E4 Model 1529 comes with configurations for four t/cs, four PRT/thermistors, or two of each. At 600°C, accuracy of Type J t/cs is ±0.35°C; PRT accuracy at 100°C is ±0.009°C, and thermistor accuracy at 25°C is ±0.0025°C. Channels can be read sequentially or simultaneously at intervals from 0.1 sec to 1 hr, and up to 8,000 readings can be logged in memory. Thermometer runs off ac power or for up to eight hr using internal, rechargeable NiMH battery. RS232 interface is standard.