4 20ma Current Loop Transmitters
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Proper Grounding of Instrument and Control Systems in ...
www.iceweb.com.aufacilitate. The key issue of the 4-20mA transmitter, with or without HART capabilities, the new multivariable transmitters, or even newer Fieldbus transmitters, is the electronics board inside. This electronics board is increasingly microprocessor and integrated circuit (IC) based, and consequently far more vulnerable to surge currents.
ST5484E Seismic Velocity 4-20mA Transmitter
www.metrixvibration.com4-20 mA Proportional to velocity full scale range (4mA = 0 vibration, 20mA = full scale vibration) Maximum 4-20 mA loop resis-tance R L = 50 x (Vs – 11) W where Vs = Supply Voltage at transmitter terminals. NOTE: For every 50 W of resistance in the 4-20 mA loop, 1 V DC above the minimum sup-ply voltage (11 V DC) must be available at the
STD800 SmartLine Differential Pressure
www.honeywellprocess.comFigure 2 - Supply voltage and loop resistance chart & calculations Performance Under Rated Conditions – All Models Parameter Description Analog Output Digital Communications: Two-wire, 4 to 20 mA (HART & DE Transmitters only) Honeywell DE, HART 7 protocol …
Model K1 Pressure Transmitter - Ashcroft
www.ashcroft.comModel K1 Pressure Transmitter BULLETIN PT-1 APPLICATIONS Hydraulic, refrigeration, machine tool, test/measurement, pump control, HVAC, medical, construction equipment and