The integral pneumatic calibration hand-pump of the 718-Ex intrinsically safe portable pressure calibrator contains protective check valves to prevent fluid contaminants being pulled back inside the pump assembly. The check valves are also easily servicable via direct access on the underside of the calibrator. A volume adjuster is located alongside the coarse hand pump for fine adjustment of calibration setpoints.
The 718Ex intrinsically safe portable pressure calibrator includes a current meter for checking the output of pressure transmitters and a switch test mode with capturing the point which a pressure switch opens and closes. A hold button is provided for freezing the measurements so that they can be recorded.
The accessories included with the 718Ex intrinsically safe portable pressure calibrator are banana plug test leads with crocodile clips, protective red rubber holster, two 9 volt batteries, in-line filter and user manual on CD Rom.
Technical Summary
Internal Pressure Range: 2, 7 or 20 bar g (30, 100 or 300 psi g)
Accuracy: ±0.05% FS
Pressure Connection: 1/4 inch NPT female
Special Features: Integral pneumatic hand pump with volume adjustment, CSA class 1 and ATEX II 1G EEx ia IIC T4 certification, 0-24mA current meter
Special Options: Compatibilty with any number of external pressure range modules up to 200 bar
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