7018 Differential Pressure Calibrator0 pages

Time Electronics

7018 Differential Pressure Calibrator
• 0.2, 2, 5 and 10bar versions available
• Accuracy 0.04% of full scale
• Pneumatic
• Calibrate DP transmitters, gauges & more
• Loop current measure
• 24/36V loop power
• Over-pressure alarm
• RS-232 serial interface
• EasyCal software compatible
• Mains or battery powered
DESCRIPTION
The 7018 is a differential pressure calibration system suitable for field and laboratory calibration work of
both diffential pressure and electrical process loop signals. The instrument is designed for very stable
measurement of differential pressures between its two output ports, enabling the calibration of differential
pressure gauges, transducers, and transmitters. There are five available versions, according to the required
range, either 0.2, 2, 5, or 10bar.
Features include a 4.5 digit LCD display with 4 selectable pressure units plus mA, zeroing switch, and two
quick release connector ports (Hi and Lo for differential pressure input) that are situated on the front panel
of the unit. Best accuracy is 0.04% of full scale.
For process signal calibration the loop signal is displayed on the LCD display to 0.05% accuracy. Loop drive
supply (24V or 36V) is also provided. Both pressure and loop signal can be displayed at the same time to
speed up the calibration of pressure transmitters. Additionally a continuity function is available for testing
for open circuit loops.
Power is via internal rechargeable cells (24 hours typical use) with a built-in mains charger. The unit can be
powered directly from the mains if required. The 7018 is housed in an impact resistant safety case that
provides protection and increased durability. Pressure connections are on the front panel and the instrument
is supplied with a pressure hose, electrical test lead, 2 electrical probes and 2 crocodile clips.
OPTIONS
For the 7018, input pressure can be generated by the 7090 pneumatic hand pump
(-950mbar to 40bar). Other pumps and digital pressure gauges are also available.
For process control signal simulation Time Electronics’ handheld 7006 Loop-Mate
is available as an option. It provides 4 - 20mA and 0 - 10V signals at levels of 0%,
10%, 25%, 50%, 75%, 90%, 100%. It can also step through these set points
automatically to allow hands free calibration. It is battery powered and can be stored
in the 7018’s supplied carry pouch. See separate datasheets for more information.
The 7018 is fitted with RS232 connection as standard. Display readback can be
performed using EasyCal calibration software. With comprehensive features
EasyCal can simplify and speed up calibration procedures. Easily produce
calibration certificates and reports to international quality standards.

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