The Essex Model 3907 Loop Power Supply is designed to provide 24VDC loop power
for electronic transmitters. It is designed as a modular unit which plugs into
a standard eight pin socket. This facilitates easy replacement and/or trouble
shooting by simply unplugging the unit. An LED on the unit cover indicates the
presence of 24VDC at the designated pins. With its 100 mADC output capability,
it can power up to five (5) 4-20 mADC instrument loops.
MODEL 3907 SPECIFICATIONS
AMBIENT OPERATING TEMPERATURE RANGE: 0 to 40 degrees C
POWER INPUT: 24 VDC +/- 10% 15mA maximum
24 VDC @ 100mA,
NL/FL - 0.2%, Ripple = 8MV P-P @ Full Load
The output is
short circuit protected for momentary shorts. However, a sustained short
circuit may damage of burn-out the power supply.
PHYSICAL DIMENSIONS: 2.375(W) x 1.75(D) x 3.00(H), base to top of LED