Introduction - Fluke 718Ex 30G User Manual

Introduction

Warning
Read Safety Information before using the
Calibrator.
The Fluke Model 718Ex 30G, 718Ex 100G, and 718Ex
300G Pressure Calibrators (hereafter called Calibrator)
can do the following:
Calibrate P/I (pressure to current) transmitters.
•
• Measure pressure via a 1/8-inch NPT pressure fitting
and an internal pressure sensor or via Fluke 750PEx
Series Pressure Modules.
• Measure current up to 24 mA.
Simultaneously display pressure and current
•
measurements.
Perform switch testing.
•
The Calibrator is for use ONLY in Ex-hazardous areas.
718Ex 30G/100G/300G
Pressure Calibrator
The Calibrator makes 5-digit pressure readings in the
following units: psi, inH O at 4 °C, inH
2
cmH O at 4 °C, cmH O at 20 °C, bar, mbar, kg/cm
2 2
and mmHg. Full-scale pressure sensor input is as follows:
Model 718Ex 30G: 30 psi (206.85 kPa, 2.0685 bar).
•
OL appears at 33 psi.
Model 718Ex 100G: 100 psi (689.5 kPa, 6.895 bar).
•
OL appears at 120 psi.
Model 718EX 300G: 300 psi (2068 kPa, 20.68 bar).
•
OL appears at 360 psi.
The Calibrator measures pressure sensor inputs in the
units shown under Pressure Sensor Range and
Resolution.
For Pressure Modules, full-scale readings for all pressure
ranges can be made in psi, kPa, and inHg units. To avoid
display overflow, full-scale readings are limited to
1000 psi in cmH O, mbar, and mmHg units, and 3000 psi
2
in inH O units. Pressures of at least 15 psi must be
2
O at 20 °C, kPa,
2
, inHg,
2
1