User Guide

Instruction Manual pH 510/ Ion 510

2.6 Steps Prior to Calibration

2.6.1 Switching ‘ON’ and ‘OFF’ the meter

Press ON key to switch meter on. All the LCD segments will display momentarily for a few seconds and the

LCD then switches to the last measurement mode. To switch meter off, press OFF key.

2.6.2 Selecting Measurement Mode

The measurement modes available for the pH 510 meter are pH, mV (for ORP) and Temperature, while the Ion

510 meter has Ion, pH, mV and Temperature measurement modes. Select the correct mode of operation by

pressing the MODE key, and each press takes you to next measurement mode. When selecting a particular

parameter the respective mode annunciator displays at the right hand side of primary display; these include

[pH] for pH, [

C] for Temperature, [ppm] for Ion Concentration and [mV] for Millivolt.

2.6.3 Meter Reset

On first use, it is not necessary to reset meter before calibration as it has been factory-calibrated. However if

you wish to reset the meter to factory default refer to Section 5.4.

NOTE: Re-calibration of meter is required before measurement after the meter is reset. Likewise if you wish to

prepare a new set of measurements, you may reset all the last calibrated pH values simultaneously for added

convenience. Caution: All calibration values and memory data will be erased upon activation. Re-

calibration is required.

2.6.4 Selecting pH Buffer Standard

The meter is capable of calibrating based on either USA or NIST pH buffer standards. Please refer to Section

5.3 P3.0 for details on how to change the USA buffer standard to the NIST standard on the meter itself. Refer

to Section 8.4.1 for more details on pH buffer standards available.

NOTE: Remove protective rubber cap or storage bottle (if any) from the electrode before proceeding with

measurement or calibration. Take care not to exert too much force as this may cause damage to the electrode.

Whenever the electrode is not in use, put it into storage bottle or protect the electrode with the rubber cap

provided. Refer to the Section 6 on Probe Maintenance for more details.

3 CALIBRATION

3.1 pH Calibration

The 510 series bench meter is capable of multi-point calibration (up to 3 points) for high accuracy across the

measurement range. The 3-point calibration offers flexibility of calibrating using either USA or NIST buffer

standards with their 3 internationally accepted calibration points namely:

USA standard buffer options: pH 4.01, pH 7.00 and pH 10.01

NIST standard buffer options: pH 4.01, pH 6.86 and pH 9.18.

For ATC measurements, attach the temperature probe to the meter. The ATC mode annunciator shows on the

display. Insert the probe into the solution to be measured so that the sample temperature can be recorded and

pH readings automatically temperature compensated. If manual temperature compensation is preferred, do not

plug a temperature probe into the meter.

DO NOT REUSE SOLUTIONS AFTER CALIBRATION. Contaminants in the solution can affect the calibration,

and eventually the accuracy of the measurements.