Electrical Signals - Time Electronics 7015 User Manual

Time Electronics
7015 Pressure Calibrator User Manual
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Electrical Signals

The Loop Drive Supply is switch selectable to provide 24V, OFF, or 36V. It is rated up to
50mA and is isolated from the other internal circuits. It has a short circuit protection which
limits the current to approximately 100mA.
The Loop Current calibration function is suitable for currents up to 200mA. It does not need
zeroing and has an accuracy of 0.05% of reading ± 1 digit and a display resolution of 10µA.
Its excellent accuracy allows precise calibration of 4 - 20mA pressure transmitters. The input
resistance is only 5 ohm which provides minimal load on the loop.
The Continuity Tester function can be used to test many types of cabling, to and from the
sensors. Continuity threshold is 100 ohms and values below this are indicated by an internal
buzzer and by 'CONTINUITY' appearing on the mA display.
All electrical connections to the 7015 are via colour coded industry standard 4mm terminal
posts. These allow a 4mm plug to be inserted or alternatively conventional bare wire
connection by clamping under the terminal posts.
Two RS232 jack sockets are provided, one for each channel, these facilitate re-calibration and
read-back when used with the correct software.
The backlights can be controlled from the front panel switch.
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