Baker Hughes Druck DPI 620 Genii, Инструкция по эксплуатации

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Copyright 2013 Baker Hughes Company.
4 | DPI 620G Instruction Manual–English
Chapter 1. Introduction
1.8 Pressure Warnings
1.9 Overvoltage Category
The following summary of installation and measurement overvoltage categories are derived from
IEC 61010 - 1. The overvoltage categories indicate the severity of overvoltage transients.
1.10 Receiving the Instrument
On receipt of the instrument, check the contents in the box listed in Section 1.2. It is
recommended to retain the box and packaging for future use.
1.11 Installing the Battery
1. Remove the five Pozidriv screws A, see Figure 1 - 3.
2. Remove the battery cover.
3. Check the connections on the battery line up with the connections in the battery
compartment.
4. Place the battery in the battery compartment.
5. Replace the battery cover.
WARNING
It is dangerous to attach an external source of pressure to a
PV 62XG pressure generation station. Use only the internal mechanisms to set
and control pressure in the pressure calibrator.
To prevent a dangerous release of pressure, isolate and bleed the system before
disconnecting a pressure connection.
To prevent a dangerous release of pressure, make sure that all the related pipes,
hoses and equipment have the correct pressure rating, are safe to use and are
correctly attached.
To prevent damage to the PV
62XG, MC 620G, PM 620 or PM 620T, only use it
within the specified pressure limits.
Do not exceed the maximum pressures stated in the appropriate component
manual for the unit under test.
Reduce pressure at a controlled rate when venting to atmosphere.
Carefully de-pressurize all pipes to atmospheric pressure before disconnecting
and connecting to the unit under test.
Always wear appropriate eye protection when working with pressure.
Table 1 - 1: Overvoltage Categories
Overvoltage Category Description
CAT I
Overvoltage category I has the least severe overvoltage transients. Generally
CAT I equipment is not designed to be directly connected to the mains supply.
Examples of CAT I equipment are process loop powered devices.
CAT II
Overvoltage category II describes an electrical installation where typically single
phase equipment is connected. Examples of such equipment are appliances
and portable tools.