INSTRUCTION MANUAL
9
Measurement range: pH 0 to 14
Usable temperature range: [Sensor] 0
C to 60
C, [Converter] 0
C to 40
C
Strage temperature range: 0
C to 40
C
Electrode length: 190 mm (excluding cable)
Sensing device: ISFET (Ion-sensitive field-effect transistor)
Internal electrode: Silver/ silver chloride electrode
Reference electrode internal solution: Carboxymethyl cellulose (CMC), glycerin, supersaturated KCl
Liquid junction material: porous sintered polyethylene
Sensor material: Tantalum pentoxide, platinum, acrylonitrile-butadiene-styrene (ABS) resin, epoxy resin, polyethylene resin
Height of sensing part: 16 mm (from the tip of electrode)
Application: D-10, D-20, D-50, D-70, F-10, F-20, F-50, F-70 series
Power: 6 V DC CR2032×2, Auto power OFF
LED indicator: Meas. LED (green blink while the power is ON), Low Batt. LED (red blink when the battery voltage is low)
Cable length: 1 m
3.
Preparation
For the first use, prepare the ISFET pH electrode as follows.
■
Setting batteries
■
Assembling sensor and converter
Note
•
Do not touch the sensor terminal. It may be damaged by static electricity.
•
When tightening the nut, no gap should be left between the nut and the sensor. If the nut is not tightened enough,
water may enter the inside of the sensor and the sensor may be damaged.
Before measurement or calibration, prepare the ISFET pH electrode as follows.
■
Connecting to pH meter
1
Insert the electrode connector into the connector port on the meter, after aligning with the pin. Do not insert the con-
nector unless it is aligned properly with the port.
2
Press the electrode connector into the port on the meter, while turning the connector to the right.
1
Unhook and draw the converter
cover slowly.
2
Set two new batteries (CR2032) by
slide them under the positive con-
tacts with the positive poles of the
batteries up.
3
Attach and hook the converter cover
to the converter by making the pro-
jection (A) fit in the hole (a) on the
hook.
Positive contacts
Battery
Positive
contacts
a
A
1
Remove the end cap from the
sensor, and the seal from the
liquid junction. Make sure that
the O-ring is attached to the
sensor.
2
Turn the nut to
the left to
remove it from
the converter.
3
Insert the sensor to the con-
verter slowly checking that the
O-ring is untwisted, and match
the
△
marks on the sensor and
converter. Then turn the nut to
the right to fix the sensor.
4
Immerse the sensing
part and liquid junction
completely into 3.33
mol/L KCl solution (300)
for 30 minutes or longer.
Liquid junction seal
End cap
Do not
O-ring
touch!
△
mark
