User Programs - Hach LT 200 Manual Del Usuario

Table 3 Stored programs—LT 200
Program Description
COD Increases the temperature of the sample cells to 148 °C for
120 minutes. In the cooling phase, four beeps are heard when the
sample cells are at 80 °C. Remove and carefully invert the sample
cells several times, before letting them decrease in temperature in a
rack.
The COD temperature program can be used for all COD sample cell
tests.
100 °C Increases the temperature of the sample cells to 100 °C for 10, 60 or
120 minutes.
For example, the "100 °C, 60 minutes" temperature program is used
to:
• Identify phosphate and chromium
• Digest heavy metals
• Digest samples using the LCW 902 Crack Set
40 °C Increases the temperature of the sample cells to 40 °C for
10 minutes.
For example, the "40 °C, 10 minutes" temperature program is used
for formaldehyde test or enzymatic food tests.
Table 4 Stored programs—DRB 200
Program Description
COD Increases the temperature of the sample cells to 150 °C for
120 minutes. In the cooling phase, four beeps are heard when the
sample cells are at 120 °C. Remove and carefully invert the sample
cells several times, before letting them decrease in temperature in a
rack.
TOC Increases the temperature of the sample cells to 105 °C for
120 minutes. The TOC temperature program can be used for all Hach
TOC sample cell tests.
10 English
Table 4 Stored programs—DRB 200 (continued)
Program Description
100 °C Increases the temperature of the sample cells to 100 °C for 30, 60 or
120 minutes. For example, the "100 °C, 60 minutes" temperature
program is used to:
• Digest samples using the Metals Prep Set
• Identify phosphate and chromium
• Digest heavy metals
105 °C Increases the temperature of the sample cells to 105 °C for 30, 60 or
120 minutes.
150 °C Increases the temperature of the sample cells to 150 °C for 30, 60 or
120 minutes.
165 °C Increases the temperature of the sample cells to 165 °C for 30, 60 or
120 minutes.

User programs

The LT 200 has six temperature programs that are configured by the
user (PRG1–PRG6). The DRB 200 has three temperature programs that
are configured by the user (PRG1–PRG3).
To configure a user temperature program:
1. Select a user temperature program using the keys.
2. Push Prog to enter programming mode.
3. Select a 4-character name for the program. Push the left key to
change the character. Push the right arrow key to move the cursor to
the next position. Push OK to save the change.
4. Push or hold down the up and down arrow keys to set the
temperature (37 to 150 °C). Push OK to save the change.
5. Push or hold down the up and down arrow keys to set the time (0 to
480 minutes). Push OK to save the change.
6. Push OK to save the program.