Differential Transmitters

Approved for use in hazardous location applications. Intrinsically safe for Class I, II, & I, Div. 1, Groups A, B, C, D, E, F & G; Class I, Zone 0 Aex ia IIC.

Monitor differential pressure in air/liquid flow systems, HVAC/R automation, pneumatic systems and process control with the Series 647 Wet/Wet Differential Pressure Transmitter. Units are temperature compensated and provide a 4 to 20 mA output signal.

Senses very low pressures of air and non-combustible, compatible gases and sends a standard 4-20 mA output signal. Positive, negative and differential pressures can be measured within a full span accuracy of ±0.50%. This weatherproof unit is enclosed in a polycarbonate case, designed to meet (IP66/NEMA 4X).

The Testo 6351 pressure transmitter for differential pressure enables measurements in the 50 Pa to 2,000 hPa measuring range. A particularly outstanding feature of the transmitter is the automatic zero-point adjustment, which ensures high accuracy and long-term stability.