Practical Instrument Electronics 830 - Manual (Page 15)

Page 13
MODE - pressing the knob will cycle through READ, PWRM,
READ% ,PWRM% and OFF.
READ turns on the mA display and indicates current passing
through the loop proportional to the input of the transmitter
which is controlled by the output of the 830. Choose
READ%
if your would like the mA display in percent of 4-20 milliamps.
PWRM is POWER MEASURE which uses the internal loop
supply of the 830 to power up the transmitter while indicating
the current passing through the loop proportional to the input
of transmitter which is controlled by the output of the 830.
Choose
PWRM% if your would like the mA display in percent
of 4-20 milliamps.
If PWRM or PWRM% is selected an additional menu
selection of LEAK DETECT will appear. When LEAK
DETECT is turned on the 830 will display LEAK on the
display if there is more than 0.015 mA of uncontrolled current
in the loop. This may be due to a faulty transmitter, corrosion
causing a bridge to ground or moisture present at some
connection point. When LEAK DETECT tests a loop with
leakage the loop mA signal will be affected.
Operating Instructions
PWRM LEAK
18.300 mA
830.0
°c
TYPE K
Typical
2-Wire
Transmitter
+ IN - REF +OUT-
Thermocouple Wire
SOURCE
HI
SET
LO
MAX
READ
MIN
READ
830.0
°C
PWRM 5 6 + -
TYPE K
18.300 mA
(Enlarged Display)