73
Maintenance
accomplished by touching an earth-grounded metal surface such as the chassis of an
instrument, or a metal conduit or pipe.
•
To reduce static build-up, avoid excessive movement. Transport static-sensitive
components in anti-static containers or packaging.
•
To discharge static electricity from your body and keep it discharged, wear a wrist
strap connected by a wire to earth ground.
Handle all static-sensitive components in a static-safe area. If possible, use anti-static
floor pads and work bench pads.
9.2.1 Internal Maintenance Items
The following items require access to the inside of the case for service:
•
Fuses for the 12 V dc input, as well as the RS485 and sampler and analog interface
connectors (if so equipped)
•
Internal desiccant module
•
RAM memory batteries
•
Bubbler Module
•
System upgrades or enhancements (4–20 mA, modem, alarm relays, etc.)
•
Circuit board repair
9.2.2 Removing the Front Panel
Always disconnect the power cable and all other cables from the 950 Flow Meter before
removing the front panel.
1.
Disconnect and remove the power supply and all cables.
2.
Remove the 18 screws from around the perimeter of the case.
3.
Carefully pull open the front panel in the same direction as you would to open the
front cover. Be sure to let the attached connectors (J4 and J6) swing out of the way
(see
).
Note:
The front panel gasket has a light coating of grease to help assure a water tight seal. Do not to
contaminate the grease or gasket area during servicing. Always replace the gasket if it is damaged
or missing. Never reassemble the case without the gasket properly installed.
Содержание Sigma 950
Страница 2: ......
Страница 6: ...4...
Страница 20: ...18 Introduction...
Страница 34: ...32 Basic Programming Setup...
Страница 50: ...48 Sensor Installation...
Страница 82: ...80 Maintenance...
Страница 83: ...81 Appendix A Program Flow Charts Figure 22 Overview of Basic Program Menus...
Страница 84: ...82 Program Flow Charts Figure 23 Setup Flow Chart...
Страница 85: ...83 Program Flow Charts Figure 24 Options Flow Chart...
Страница 86: ...84 Program Flow Charts Figure 25 Alarms Menus Flow Chart...
Страница 87: ...85 Program Flow Charts Figure 26 Calibration Menus Flow Chart Page 1...
Страница 88: ...86 Program Flow Charts...
Страница 102: ...100 Programming Features...
Страница 106: ...104 Primary Devices Head Measurement Locations...
Страница 126: ...124 SCADA Modbus System Guidelines...