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7018 Differential Pressure Calibrator

Overview
Specifications
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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 DP gauges, transducers, and transmitters. There are five available versions, either 0.2, 2, 5, or 10 bar.

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 calibration the loop signal is displayed on the LCD display to 0.05% accuracy. Loop drive supply (24 V or 36 V) 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.

Features

0.2, 2, 5 & 10 bar versions
Accuracy 0.04 % of full scale
Pneumatic
Over-pressure alarm
Isolated 24/36 V loop supply
Loop current measure
Mains or battery powered
EasyCal software compatible via RS-232

Portable Operation

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.

Accompanying Products

For the 7018, input pressure can be generated by external hand pumps. The 7090 and 8090 pneumatic models provide fine output control for testing applications. Gauges are also available.

For process control signal simulation Time Electronics’ handheld 7006 Loop-Mate is available as an option. It provides 4 - 20 mA and 0 - 10 V 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 pouch.

EasyCal Calibration Software

The 7018 has RS-232 communication for use with Time Electronics EasyCal software. This allows users to automate the testing process for increased speed of calibration and consistency of results.

Produce traceable calibration certificates and test reports for quality standards with additional uncertainty information for ISO 17025 conformance.

Specifications

Technical Specification

Pressure
Range (bar)	0 to ±0.2	0 to ±2	0 to ±5	0 to ±10
Accuracy (% of FS)	0.1	0.04	0.04	0.04
Resolution (bar)	0.01 mb	.0001	.001	.001

Units	0.2 bar version: mbar, PSI, kg/cm2, cmWg and mA. 2, 5, and 10 bar versions: bar, PSI, kg/cm2, cmWg and mA.
Maximum Static Pressure	10 bar
Sensor	Piezo-resistive - stainless steel diaphragm
Over pressure warning	1.2 x range full scale - audio and visual (on LCD) warning
Fittings	Quick Release

Electrical
Range	Loop current measurement 0 to 200 mA
Resolution	10 μA
Resistance	Loop load 5 Ω
Accuracy	0.05 % of reading ±1 digit
Loop Drive	24 V or 36 V switch selectable, 50 mA max - isolated and with short circuit protection
Continuity	Threshold: 100 Ω with audio and visual warning
Terminals	4 mm industry standard terminal posts

General Specification

Power Source	Internal rechargeable NiMH batteries, or mains supply (230 V or 110 V 50/60 Hz)
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	W 270 x H 175 x D 250 mm
Weight	3 kg
Supplied with	1 pressure hose: Quick release fitting. Electrical Test Lead: Twin flexible lead, terminated with 4 off 4 mm gold plated plugs. Electrical probes: 2 off low voltage probes and 2 crocodile clips. Mains power lead.
Optional Extras	Pneumatic hand pump, gauges, loop simulators, EasyCal calibration software, spare fuses, and calibration certificates
Country of Origin	UK
Shipping Details	Packed Dimensions: L 42 x W 42 x H 42 cm / Packed Weight: 6 kg
HS Code	9030 2020

Options

Pressure Range Options (7018/Range Code)
Range (bar)	0.2	2	5	10
Range Code	7100	7101	7102	7103

Accompanying Products and Calibration Certificates
7090	Pneumatic Hand Pump (-950 mbar to 40 bar) - View web page
7006	Loop-Mate 1: Loop Current Simulator - View web page
ECFL-RN1Y/1L	EasyCal Calibration Software - 1x Full user license (renewal subscription type). Recurring payment every 12 months. Ongoing support contract included. License key type: USB dongle.
C178	Traceable calibration certificate (Factory)
C190	Accredited calibration certificate (ISO 17025)