7018 Differential Pressure Calibrator
- 0.2, 2, 5 & 10bar versions
- Accuracy 0.04% of full scale
- Over-pressure alarm
- Isolated 24/36V loop supply
- Loop current measure
- Mains or battery powered
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.
For the 7018, input pressure can be generated by the 7090 pneumatic hand pump (-950mbar to 40bar). Additional pumps and accompanying 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.
The 7018 is fitted with RS-232 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.
Technical SpecificationsSpecifications are for 1 year at 23ºC ±5ºC. Accuracy includes linearity and long term effects.
All accuracies are ±1 digit. For operation outside specified temperature range, apply 70ppm per °C
Pressure Range (bar) 0 to ±0.2 0 to ±2 0 to ±5 0 to ±10
Accuracy (% of fs)
0.2bar version: mbar, PSI, kg/cm2, cmWg and mA.
2, 5, and 10bar versions: bar, PSI, kg/cm2, cmWg and mA.
Maximum Static Pressure 10bar Sensor Piezo-resistive - stainless steel diaphragm Over pressure warning 1.2 x range full scale - audio and visual (on LCD) warning
Electrical Range Loop current measurement 0 to 200mA Resolution 10μA Resistance Loop load 5Ω Accuracy 0.05% of reading ±1 digit Loop Drive 24V or 36V switch selectable, 50mA max - isolated and with short circuit protection Continuity Threshold: 100Ω with audio and visual warning Terminals 4mm industry standard terminal posts
Power Source Internal rechargeable NiMH batteries, or mains supply (230V or 110V 50/60Hz) Battery Life 24 hrs of typical usage between charges Display 7 segment LCD with ‘Low Battery’ warning indicator Interfaces RS-232 for readback and re-calibration (software not supplied) Case Structural resin which is weather-proof to IP66 standard Dimensions W270 x H175 x D250mm Weight 3kg
1 pressure hose: Quick release fitting. Electrical Test Lead: Twin flexible lead, terminated with 4 off 4mm gold plated plugs. Electrical probes: 2 off low voltage probes and 2 crocodile clips. Mains power lead.
Pneumatic hand pump, gauges, loop simulators, EasyCal calibration software, spare fuses, and calibration certificates traceable to NPL and UKAS
Country of Origin UK Models
Differential Pressure Calibrator (+ pressure range code shown below)
Pressure Range Ordering Information Range (bar) 0.2 2 5 10
Pneumatic Hand Pump (-950mbar to 40bar) - View web page
Loop-Mate 1: Loop Current Simulator - View web page
EasyCal Full License - when purchased with calibrator/DMM: Discounted full license with 1 year support.
For further licenses and EasyCal add-ons see the Easycal web page.
C178 Factory Calibration Certificate (NPL traceable) C190 UKAS Calibration Certificate (ISO 17025) PDF Downloads File Name File Size Language
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7018 Differential Pressure Calibrator