Explosion proof melt pressure transmitter Oil Filled. The WF converts applied pressure at the point of measurement to a proportional voltage output signal. An amplifier converts the strain gauge signal to a 4-20 mA output. • Factory Mutual approved Explosionproof for Class I, Division 1, Groups A, B, C, D, and Dust-Ignitionproof for Class II, Division 1, Groups E, F, G • Other approvals: CE, NEMA 4/IP65 • High-level output 2-wire, 4-20 mA • Internally generated 80% calibration signal (R-Cal) • 1/2-20 UNF thread standard, M18x1.5 also available • Fluid-filled system for temperature stability • 17-7 PH corrugated diaphragm with TiN (Titanium Nitride) coating standard • Oil-fill is FDA approved — meets requirements CFR172.3620 and 172.878 WF0-N-M-PXXX-1-4-0-000 WF0-N-H-PXXX-1-4-0-000 • Accuracy: <±0.25% FSO (H); <±0.5% FSO (M)