Isotech TTI-7-R, Operator'S Handbook Manual

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1.1 Overview
The TTI-7-R Precision Thermometer is a high accuracy instrument
designed for laboratory and industrial temperature measurement and
calibration applications.
Features include:
• unique dual capability for both thermocouple and resistance
thermometer measurements;
• number of input channel can be expanded from two to ten
channels;
• large graphic LCD display for temperature measurement values
as well as configuration settings and statistical results;
• advanced functions include differential measurement, four
programmable scanning routines, programmable timer, data
logging to none volatile memory, statistical reporting;
• analogue output, IEEE 488 and RS232 communication
interfaces available for automated monitoring and calibration
applications;
• internal battery provides up to 20 hours mains free operation for
remote measurement and data logging applications.
The TTI-7-R will operate with any Pt25 (25 Ohm) and all 2, 3 and 4-wire
Pt100 (100 Ohm) platinum resistance thermometers as well as most
standard international thermocouple types. Temperature measurement
units are selectable by single front panel key operation; °C, °F,K Base
measurement units mV,
Ω are also displayed.
Resistance accuracy is better than ±4m Ω for Pt100 400 Ohm range
and ±1.5m Ω for Pt25 100 Ohm range (over full range of –200 to 100°C
at +20°C ±2°C). This is equivalent to temperature measurement
precision of ±15mK for Pt25 thermometers and ±10mK for Pt100
thermometers. Total system measurement uncertainties as low as
±20mK are possible when the TTI-7-R is used with a calibrated
reference thermometer.
1. Introduction
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