Isotech TTI-7-R Operator's Handbook Manual page 8

Introduction
Overall system accuracy depends on the PRT quality and calibration. See Section
9 for details of the system measurement accuracy specification.
Standard miniature and 4mm instrument sockets allow convenient connection for
thermocouple inputs. Connection sockets incorporate integral temperature
compensation sensors making high accuracy thermocouple measurement
possible without the use of an external reference junction.
Standard features of the TTI-7-R Precision Thermometer include:
• direct temperature measurement display in °C, °F,K;
• 2 x Pt 25 or Pt100 channel inputs on front panel using 4mm gold plated
spade lug connectors or wire/banana plugs;
• 2, 3 and 4 wire PRT probe measurement;
• Thermocouples B,C,D,E,J,K,N,R,S,T,U,W
• 1 to 20 probe coefficients for ITS90 or CVD entered and stored from
programming PRT calibrations;
• High Accuracy to 0.01 deg.C over –200 to 660 deg.C
• High Resolution 0.001 deg.C for 25/100 Ohm PRT's and 0.01 deg.C for TC's;
• Measuring Range –200 to 1100 deg.C for PRT's and 0 to 2315 deg.C TC's;
• PRT self-heating and measurement current polarity selection;
• illuminated display;
• compact rugged case;
• 2 to 10 channel expansion with rear panel SPRT, RTD, and TC modules;
• Automatic Cold Junction compensation for TC's;
• Switched DC (current reversal) option to eliminate thermal e.m.f.s on PRT's;
• Internal data logging and storage of 4000 measurements;
• Statistical data internally (Min, Max, Peak/Peak, Average, Std. Deviation) ;
• Differential (Difference between any 2 channels connected) ;
• PC interface (RS232) included;
• Portable 20 hour use using internal battery + charger fitted or mains supply;
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