Extech Instruments PH100 User Manual

PH100/PH110-en-GB_v3.1 3/15
6
15-Storing Readings into Memory
1. Momentarily press the MODE button to store a reading.
The LCD will briefly display the memory location
number and then the value stored (Data Hold will
activate).
2. Momentarily press MODE again to return to normal
operation.
3. Repeat step 1 to store the next reading and so on.
4. After 15 readings are stored the ExStik
TM
will return to memory location 1 and start overwriting
existing data with newly stored data.
Recalling Stored Readings
Note: Check that the HOLD symbol is not displayed. If it is, exit the HOLD function by momentarily
pressing the MODE button.
1. Momentarily press the CAL button and then press the MODE button immediately after CAL is
displayed; the storage location number (1 through 15) will flash. If the CAL mode is
accidentally accessed (display flashing), press the CAL button again to exit.
2. The last reading stored will be displayed first. To advance through the stored readings,
momentarily press the MODE button. The location number is displayed first, followed by the
reading stored in that location.
3. To exit the recall mode, momentarily press the CAL button and the ExStik
TM
will return to
normal operation.
CAL Reminder Display
When the ExStik
TM
is turned on in the pH mode for the 15th time without recalibration, the ‘CAL’ icon
appears on the LCD indicating that the ExStik
TM
may require calibration. Some applications may
require recalibration of the electrode more frequently than others. The CAL display is simply a
reminder and will turn off when the pH electrode is recalibrated.
RENEW Display
A flashing ‘RENEW’ warning indicates that the probe may be nearing the end of its useful life. If
cleaning or recalibration does not cause the RENEW icon to disappear, replace the electrode. The
RENEW display appears when the output of the pH electrode fails a diagnostic test.
Considerations
 If the unit appears to be locked (display frozen) it is possible that the Data Hold mode has been
inadvertently accessed by pressing the MODE button. Simply press the MODE button again or
turn the meter off and restart if the display appears frozen.
 If the meter does latch up and no button presses revive it, remove the batteries, push the ON
button for 10 seconds and then reinsert the batteries.
 Note that if the batteries are removed, any stored readings will be discarded. Also, the user
calibration data for pH will be cleared. New user pH calibration data is required. Factory
calibration data for all models will be retained, however.

Extech Instruments PH100 Specifications

Operating Environment

operating temperature range	32 to 122°F (0 to 50°C)
operating humidity	< 80% RH
temperature range	23 to 194°F (-5 to 90°C)

Temperature Specifications

temperature compensation	Automatic from 32 to 194°F (0 to 90°C)
temperature resolution	0.1° up to 99.9 then 1° thereafter
temperature accuracy	± 1°C/1.8°F [from -5 to 50°C (23 to 122°F)]

Power

battery type	Four (4) CR2032 button batteries
low battery indication	‘BAT’ appears on the LCD
auto power off	After 10 minutes of inactivity

Weight and Dimensions

dimensions	1.4x6.8x1.6” (35.6x172.7x40.6mm)
weight	3.85oz (110g)
measurement storage	15 tagged (numbered) readings