Core Points of E+H Instrument Maintenance
E+H instruments are precision measurement products, and proper daily maintenance is key to ensuring their stable performance. The following maintenance specifications are for reference by engineering technicians and procurement personnel.
Daily Inspection and Maintenance Items
Regular inspections of the instrument's appearance and environment should be conducted to promptly identify potential issues. Specific inspection items are as follows:
- Whether the instrument appearance is intact, free of damage or corrosion
- Whether the ambient temperature and humidity are within the allowable range
- Whether dust and corrosive gases exceed the standard
- Whether the instrument temperature rise is abnormal
- Whether vibration is excessive and installation is secure
Safety Maintenance Specifications for Explosion-proof Instruments
Prohibited Actions During Live Maintenance
For explosion-proof instruments, it is strictly prohibited to open the junction box and observation window while powered on. If cover opening maintenance is required, the power must be cut off first, and live work is not allowed.
Selection of Explosion-proof Test Instruments
No sparks should be generated during maintenance. The test instruments used must be certified explosion-proof instruments or intrinsically safe instruments to avoid induced sparks or directing excessive voltage to improper locations.
Maintenance and Calibration Cycle for Water Analysis Instruments
For water analysis instruments such as pH, ORP, turbidity, and COD, it is recommended to perform maintenance and calibration according to on-site usage conditions. The maintenance cycle should be differentiated based on the usage environment. Refer to the table below for details:
| Usage Environment | Recommended Maintenance Cycle |
|---|---|
| Good environment | Once a month |
| Harsh environment | Once every half month or once a week |
Operating Specifications and Technical Support
Familiarize yourself with the E+H instrument manual for correct operation. For content you do not understand, consult relevant professionals, preferably E+H technical personnel.