Advanced Instruments 4250, User Manual

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Chapter 2 — Instrument Operation 11
Hazardous material cautions 11
Function of major components 12
Sample preparation 17
Sample handling 17
Standards & controls 18
Selecting plateau mode 18
Before testing samples 19
Repeatability tips 20
Sample test procedure 23
Sample test errors 25
Changing operating settings 25
Using the RS-232 port 33
Figure 5: Model 4250 Components and Controls 12
Figure 6: Keypad Layout and Functions 14
Figure 7: Back Panel 15
Table 2: Barcode Port Connections 16
Table 3: Setup Menu Items 26
Chapter 3 — Standards & Quality Control 35
Repeatability and accuracy 35
Standards and controls 35
Maintenance of standards 36
Quality control implementation 36
Chapter 4 — Calibration 39
Calibration procedure 39
Celsius and Hortvet 40
Calibration notes 41
Chapter 5 — Troubleshooting & Service 43
Service & maintenance cautions 43
Obtaining service 44
Routine maintenance 46
Shutdown and storage 47
Troubleshooting checks 47
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Cryoscope Model 4250 User’s Guide