beautypg.com

Myron L PS6 User Manual

Page 34

background image

30

Symptom

No display, even though

measurement key pressed

Inaccurate pH readings

No response to pH changes

Will not adjust down to pH 7

pH readings drift or

respond slowly to

changes in buffers/

samples or “FAC” is

displayed repeatedly

Unstable

Conductivity/TDS

readings

Unable to calibrate

Conductivity/TDS

Possible Cause

Battery weak or not connected.

1. pH calibration needed (ref. pH

Cal., pg. 14).

2. Cross-contamination from residual

pH buffers or samples in sensor

well.

3. Calibration with expired pH buffers.

Sensor bulb is cracked or there is an

electromechanical short caused by

an internal crack.

pH/ORP sensor has lost KCl.

1. Temporary condition due to

“memory” of solution in pH

sensor well for long periods.

2. Bulb dirty or dried out.

3. Reference junction is clogged or

coated.

1. Dirty electrodes.

Film or deposits on electrodes.

XVII. TROUBLEShOOTING ChART

30