1
Pressure Calibrator
Introduction
The Fluke 718 Series 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 a Fluke 700
Series Pressure Module
• Source Pressure
• Measure current up to 24 mA
• Simultaneously display pressure and current
measurements.
• Supply loop voltage
• Calculates percentage in Percent Mode
• Calculates mA error in Percent Error Mode
The 718 Pressure Calibrators (hereafter, “the Calibrator”)
include:
• 718 1G
• 718 30G
• 718 100G
• 718 300G
The Calibrator takes 5-digit pressure readings in the
following units: psi, inH2O at 4 °C, inH2O at 20 °C, kPa,
cmH2O at 4 °C, cmH2O at 20 °C, bar, mbar, kg/cm2,
inHg, and mmHg.
Pressure sensor specifications are as listed under
“Pressure Sensor Input”.
The Calibrator measures pressure in the units shown in
Table 1.
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
2
O, mbar, and mmHg units, and 3000 psi in inH
2
O
units. Pressures of at least 15 psi must be measured for
meaningful readings in bar and kg/cm
2
units.