7067 Precision Loop Calibrator0 pages

Time Electronics

7067 Loop Calibrator Module
• Current measure: 125mA, source: 50mA
• Voltage measure: 25V, source: 21V
• Loop Current Sink
• Resolution 1μA or 1mV
• Accuracy 0.01%
• Transmitter and square root functions
• Auto-ranging feature
SOFTWARE

• Programmable steps and ramp
DESCRIPTION

A precision module primarily used for the calibration and simulation of voltage and current loops. The
7067 is a high accuracy calibrator incorporating source and measure capabilities. With user friendly
controls and simple operation the 7067 is an excellent module for both process engineers and
calibration technicians.
The three operating modes provide a fast and easy solution to process applications; Loop current/
voltage source for simulating a transmitter and the loop supply, sink of loop current for simulating a
transmitter, and measurement of loop current/voltage for simulating a loop indicator.
Manual step of the output is possible at five calibration points; 0%, 25%, 50%, 75% and 100% of span.
Automatic stepping of the output is also available, both up and down with programmable dwell times.
Continuous up/down ramping can also be performed, with user programmable ramp rates and dwell
time (top and bottom).
In source mode the range can be user programmed to any value between 0mA and 50mA, or 0V and
21V. For example a low point of 10mA and a high point of 50mA could be set giving a span of 40mA.
Measure mode provides both voltage and current measuring capability with 5 digit resolution. Ranges
are 0 to ±5V and ±5 to ±25V, 0 to ±25mA and ±25 to ±125mA.
Alternatively the signal can be measured as a % of span for the following ranges; 4 to 20mA, 0 to 20mA,
square root 4 to 20mA, or square root 0 to 20mA. For all measurements a Min/Max recording function
is available on demand.

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