Page 20
672-H Manual
4. Press the
SELECT
button repeatedly to scroll through the remaining
programming options. After the last option, the display will show
“
donE
” while the button is held down. When the button is released,
the system will return to normal operation within a second. If at any
time no button is pressed for 5 minutes, the system will return to
normal operation. If you wish to remain in the programming mode,
press the
SET
button while still holding down the
SELECT
button when
the display shows “
donE
”. This returns you to the first programming
menu item.
To program the range:
The PosiGround can be set to determine the grounding status at a resistance
of either 250 ohms (high range) or 10 ohms (low range). Typically, the high
range is used when grounding is being measured through the earth, such
as between two ground rods or equivalent unconnected metal structures.
Specifications normally call for this resistance to be less than 1000 ohms to
be effective, the PosiGround uses 250 ohms as the decision point to allow
for margin.
The low range is used when grounding to metal structures that are in turn
properly grounded, these are commonly provided at loading facilities. In
this case specifications normally call for metal to metal resistance to be
less than 10 ohms. The PosiGround uses this value.
It is up to the operator and/or equipment installer to determine which
range is appropriate for the application.
1. Hold down the
SELECT
button to enter the programming mode.
Once the top display shows “
HndE
” to show that you have entered
the programming mode, release the button.
2. Press the
SELECT
button again until the top display shows “
rAng
”.
3. Press the
SET
button to change the range between 10 ohms (
r10
)
and 250 ohms (
r250
).
4. Press the
SELECT
button repeatedly to scroll through the remaining
programming options. After the last option, the display will show
“
donE
” while the button is held down. When the button is released,
the system will return to normal operation within a second. If at any
time no button is pressed for 5 minutes, the system will return to
normal operation. If you wish to remain in the programming mode,
press the
SET
button while still holding down the
SELECT
button when
the display shows “
donE
”. This returns you to the first programming
menu item.
