Hach-Lange PHC745 - Manual (Page 2)

Specifications Details
Storage solution Saturated KCl
Minimum sample depth 18 mm (0.71 in.)
Dimensions Body diameter: 12 mm (0.47 in.)
Body length: 103 mm (4.1 in.)
Total length: 200 mm (7.87 in.)
Cable length: 1 m (3.28 ft)
Cable connection M12 digital output and connector compatible with HQd meters
1 Radiometer Analytical’s Red Rod technology: Encapsulation of reference elements with a red protection tube.
Product overview
The probe is a digital pH combination electrode with refillable electrolyte, a glass body
and an integrated temperature sensor. The probe is for laboratory use and has a glass
sleeve junction that measures pH in wastewater, emulsions and viscous liquids.
Note: Do not use the probe with organic solvents or high alkaline sample types.
A 59-mL bottle of reference electrolyte filling solution (saturated KCl solution) is included
with the probe. Refer to
Figure 1 .
Figure 1 Probe overview
1 Storage protector 4 Cable, 1 meter (3.28 ft)
2 Filling-hole cap 5 Sleeve junction
3 Protective tape and filling-hole 6 Glass bulb and temperature sensor
Preparation for use
Prepare the probe before a calibration or a sample measurement.
1. Turn the storage protector clockwise to loosen it.
2. Remove the storage protector.
3. Fully rinse the reference junction and the glass bulb with deionized water to remove
all of the storage solution or possible salt particles. Dry with a no-lint cloth.
4. Remove the protective tape from the filling hole before initial use (refer to Product
overview on page 2). Discard the protective tape.
5. Add the filling solution to the probe as necessary (refer to Fill the probe
on page 12). The filling solution must be above the standard solution or the sample
level during measurement or calibration (
Figure 2 ).
2