Modes Of Operation - Time Electronics 7000 User Manual

Time Electronics
7000 RTD Calibrator
1.1

Modes of Operation

1.1.1 Source Monitor mode (4 wire)
Typical functions
• Check RTD probes by measuring their resistance at known temperatures.
• Measure resistance values.
• Indicate temperature when connected to an RTD probe.
• Pre-programmed with a particular RTD's characteristics for very high accuracy.
Excitation current........................1 mA on all ranges.
Resistance range........................0.01 Ω to 2.6 kΩ.
Resolution...................................0.01 Ω.
Accuracy.....................................See specifications on next page.
Auto re-calibration.......................Every 0.6 secs.
Temperature stability...................Better than 0.0015 % per °C.
Max/Min values............................Logged automatically.
The 7000 may be used with a calibrated and certified probe to produce a highly accurate
thermometer. The performance can be further enhanced by programming the actual
characteristic of the probe into the unit.
1.1.2 Simulator Mode (4 wire)
Typical functions
• Output resistance of precise known value.
• Simulate an RTD value from an RTD table chart.
• Simulate an RTD value using the internal table.
Excitation current..............................0.6 mA to 1 mA.
Resistance range..............................0.01 Ω to 2.6 kΩ.
Resolution.........................................0.01 Ω.
Accuracy...........................................See specifications on next page.
Auto re-calibration............................Every 0.6 secs.
Temperature stability........................Better than 0.0015 % per °C.
Enhanced performance may be achieved by programming the unit to simulate the
characteristic of a particular probe. Five fixed step points (0, 25, 50, 75, 100%) are available
between a user set minimum (0 %) and a maximum (100 %). Programmable ramp function
is also available.
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User Manual