Siemens SITRANS P DS III 7MF4033-1BA10-1NC6-Z Gauge Pressure Transmitter

This is a Siemens SITRANS P, DS III series Model 7MF4033-1BA10-1NC6-Z gauge pressure transmitter, a two-wire, loop-powered instrument that converts an applied pressure into a 4–20 mA output signal with superimposed HART digital communication. The –1BA10 measuring cell covers a 0.01–1 bar g (0.15–14.5 psi g) span, rated for a maximum operating pressure of 4 bar g (58 psi g) and a maximum test pressure of 6 bar g (87 psi g). Reference accuracy is ±0.075% of the set span per EN 60770-1, with a 10.5–45 Vdc power supply, a female ½-14 NPT process connection, and stainless-steel wetted parts (diaphragm and measuring cell) with a silicone-oil fill. The die-cast aluminum enclosure is rated IP65/IP68 (NEMA 4X) and weighs approximately 1.5 kg (3.3 lb). This narrow, low-pressure span suits gauge pressure measurement on tanks, vessels, filters, and low-pressure gas or liquid lines in general industrial, utility, and water/wastewater process applications.

In the SITRANS P DS III ordering code, the base number 7MF4033 designates the gauge-pressure variant of the DS III platform, and the –1BA10 suffix selects the 0.01–1 bar g (0.15–14.5 psi g) measuring cell together with the female ½-14 NPT process connection. The –1NC6 suffix specifies FM- and CSA-approved explosion protection (intrinsically-safe and explosion-proof/XP types), a ½-14 NPT electrical cable entry, and an integral analog display set to read in bar; the trailing –Z denotes a factory-built special-order configuration rather than a standard stocked catalog number.

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