eutech-instruments alpha ph differential probe Benutzerhandbuch

Instruction

manuals

ECFP21A1A1

Detailed Insertion Mount Installation Instructions

1. Wiring:

a.  Route the sensor cable through the 1.5 inch extension pipe.
b.  Apply Teflon® tape to the sensor threads.
c.  Attach the sensor to the 1.5 inch NPT coupling by turning the sensor in a

clockwise direction until secure.

d. Either route the cable directly to the Alpha pH2000D or splice the wires in a

junction box and use an extension cable.

e. Insert the cable into the Alpha pH2000D controller through a watertight cord grip.

Conduit holes are provided for the cord grip on the bottom of the Alpha pH2000D
controller.

f. Connect the sensor wires into the Alpha pH2000D sensor terminal block as shown

in the Alpha pH2000D manual.

2. Calibrate:

a. Power the Alpha pH2000D controller.

b. Remove the protective cap from the sensor head and make sure moisture is

present and that the salt bridge has not dried out. If the protective cap is dry, the

sensor should be hydrated in tap water for at least 1 hour prior to calibration.

c. Calibrate the pH sensor as explained in the Alpha pH2000D manual. It is

recommended to use a 2-point buffer calibration on installation of the sensor.
Subsequent calibrations should be scheduled based on process demands.

d. If measurement response time is slow or if the sensor will not calibrate, refer to

Section 4 for maintenance, refurbishment and troubleshooting suggestions.

3. Mount:

a. Secure the pipe assembly so that the sensor is fully immersed in the process.

Be sure that the wire colors of the sensor cable match those of the

interconnect cable on either side of the terminal strip.

Do not route the interconnect cable conduit where there are AC or DC

power cables which create electrical noise that may interfere with the
sensor signal.

Route the interconnect cable through metal conduit to minimize electrical
noise that may interfere with the sensor signal.