Other Instrument Diagnostics; Display Segments And Icons; Cold Start; Flashing 9S - Hach 2100N Instruction Manual

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SECTION 8,
continued

8.3.2 Other Instrument Diagnostics

8.3.2.1

Display Segments and Icons

8.3.2.2

Cold Start

8.3.2.3

Flashing 9s

8.3.2.4

Flashing 0s

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Table 6 Diagnostic Codes (Continued)
Code Display
54 xxxxx
55 xxxxx
56 xxxxx
57 xxxxx
58 xxxxx
59 xxxxx
60 xxxxx
61 xxxxx
62 xxxxx
63 xxxxx
64 xxxxx
65 xxxxx
66 xxxxx
67 xxxxx
68 xxxxx
69 xxxxx
Determine the proper functioning of all display segments and icons by using
diagnostic 22.
A cold start of the instrument erases from memory any calibration data entered by
the user. The instrument must be recalibrated before use. Press and hold the
key, and then turn the instrument power on to place the instrument in a cold start
condition. After cold start, the
standard calibration is entered. The instrument initializes in the
If the display flashes all 9s, the sample being measured is over-range (for the
selected range of measurement). The instrument also indicates over-range if the
sample is >40 NTU (268 Nephelos or 9.8 EBCs) with the Ratio off (refer to
Section 2.8 on page 29).
If the display flashes 0s, the measurement indicates a negative turbidity value.
Recalibrate the instrument (see Section 3.2.4 on page 39).
71
Description
A/D Reference High mV, Gain 100
A/D Reference High mV, Gain 1,000
Ground mV, Gain 1
Ground mV, Gain 10
Ground mV, Gain 100
Ground mV, Gain 1000
+5 System Volts
-5 System Volts
Lamp Volts
+8 System Volts
Calibration Coefficient A0
Calibration Coefficient B0
Calibration Coefficient B1
Calibration Coefficient C0
Calibration Coefficient C1
Calibration Coefficient C2
annunciator flashes until another four-
CAL?
CAL
mode.
CAL