Hach HQ1110, User Manual

Option

Description

Stability criteria

When Auto-stabilization is set to No, sets the stabilization rate that
determines when measurements are stable. Options: 0.1 mV/minute to
9.9 mV/minute (default: 1.0 mV/minute). A lower value gives more time for
the measurements to become stable.

Maximum
stability

Sets the maximum time that the meter waits for a measurement to become
stable. Options: 30 to 1200 seconds (default: 600 seconds).

4.

Select Calibration to change the settings for calibrations.

Option

Description

Standard set

Selects the standard solutions to use for calibration from a list of pre-set and
user-specified standard solution values. The set must have a minimum of two
and a maximum of five standards.

Form

Sets the chemical form (applicable to ammonia, ammonium and nitrate
probes).
Options for ammonia probe: NH

3

 or NH

3

—N.

Options for ammonium probe: NH

4

+

, NH

4

+

—N or NH

4

+

–NH

3

 (ammonium as

ammonia).
Options for nitrate probe: NO

3

 or NO

3

—N.

Units

Sets the calibration units. Options: mg/L (default), µg/L, g/L, g/kg, mol/L,
mmol/L, mol/kg, %, ppm or ppb.

Add a standard

Lets the user enter a user-specified standard solution value.

Delete
standards

Removes a user-specified standard solution from the list of available
standard solutions.

Slope limit

Sets the accepted range of values (from theoretical) for the calibration slope.
Options: 1 to 30% (default: 15%).

Reminder

Sets a time interval for probe calibration. A reminder shows on the meter
after the time interval. Options: Off (default), 2 hours, 4 hours, 8 hours,
2 days, 5 days or 7 days. The meter can also make a sound during the
reminder (Settings > Sound).

Expiration

When Reminder is set to a time interval, changes the calibration status to
expired after the reminder occurs. Options: Immediately after reminder,
30 minutes after reminder (default), 1 hour after reminder, 2 hours after
reminder or Continue reading (calibration status does not change).

5.

Select Verification to change the settings for calibration verifications.

Option

Description

Standard

Selects the standard solution to use for calibration verification from a list of
pre-set and user-specified standard solution values.

Form

Sets the chemical form (applicable to ammonia, ammonium and nitrate
probes).
Options for ammonia probe: NH

3

 or NH

3

—N.

Options for ammonium probe: NH

4

+

, NH

4

+

—N or NH

4

+

–NH

3

 (ammonium

as ammonia).
Options for nitrate probe: NO

3

 or NO

3

—N.

Units

Sets the verification units. Options: mg/L, µg/L, g/L, g/kg, mol/L, mmol/L,
mol/kg, %, ppm, ppb.

Add a standard

Lets the user enter a user-specified standard solution value.

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