Precision Digital PD650 - Manual (Page 14)

Model PD650 Large Display Process Meter Instruction Manual
14
Isolated 4-20 mA Transmitter Output
CALIBRATION
RANGE The transmitter output can be calibrated so that a 4 mA output
is produced for any process/rate measured by the meter. The
20 mA output may correspond to any process/rate that is at
least 501 counts greater or smaller than the process/rate
corresponding to 4 mA. (Ex. 4 mA = 0, 20 mA = 501) If the
span between 4 and 20 mA is less than 501 counts, an
error
message will appear.
EQUIPMENT
NEEDED The 4-20 mA output from the meter is calibrated without the
use of a calibrator.
OUTPUT LOOP-
POWER 24 VDC ± 5% @ 20 mA, regulated. Maximum loop resistance
is 1200
Ω. Isolated from input loop-power.
ACCURACY ± 0.1% FS ± 0.004 mA
ISOLATION 500 V input-to-output or input/output-to-24 VDC supply
EXTERNAL
LOOP-POWER
SUPPLY 35 VDC maximum
OUTPUT LOOP
RESISTANCE Power supply Minimum loop
resistance Maximum loop
resistance
24 VDC 10
Ω 600 Ω
35 VDC (external) 600
Ω 1000 Ω