Zero Point Correction (Zero); Maintenance - SKF THGD 100 Mode D'emploi

6.4 Zero point correction (ZERO)

The zero point can be corrected manually should undesired deviations occur
when no system pressure is being applied (atmospheric pressure).
The zero point correction sets the current actual value to zero.
In order exclude erroneous measurements, ensure no system pressure
is being applied when carrying out this function.
Press MENU/ZERO briely.
ZEro on will be displayed
Press RESET/OK, this initiates the zero point correction.
The actual measured value is indicated in the display as 0.0 MPa (0 psi).
The correction remains active until the device is turned off.
OFL/ZEro is displayed for 3 seconds if the measured pressure is greater than
5% of the measurement range. Zero point correction cannot be carried out.
To reset the zero point correction turn the THGD 100 off and then on again.

7. Maintenance

The only maintenance required is replacement of the batteries.
When the batteries are almost discharged, the battery indicator lashes.
• Before replacing the batteries turn off the THGD 100.
• Pull the rubber protection sleeve back until the whole of the back plate is
exposed. Use a screwdriver (tip type TX8) and remove the back plate.
• Carefully remove the old batteries.
• Insert two new LR6 (AA) alkaline batteries. Take care to ensure the
correct polarity.
• Reit the back plate and rubber protection sleeve.
• Dispose of discharged batteries in accordance with local statutory
regulations.
There are no user serviceable parts in the THDG 100.
SKF THGD 100 13