These demanding requirements can be found in many different industries from chemical plants, mining and power generation to plastics manufacturing, water treatment plants and farming.
TPM series transmitters deliver a 4-20mA output that is proportional to the pressure directly detected by a four-arm, active strain-gauge bridge that is formed from highly stable resistors fused to a high purity ceramic pressure-sensing element. Internally, the electronic elements comprise a primary signal processing module that utilises an ASIC-based high‑speed digital signal processor and a separate board that handles the interface and EMC immunity and emissions requirements.
During manufacture the sensor can be individually addressed or treated as part of a batch depending on customer performance and calibration requirements. All elements of the TPM combine to ensure a ±0.1% span non-linearity, hysteresis and repeatability specification (BFSL) over the full operating temperature range together with excellent long-term stability (±0.1% span / 12 months typical).
Featuring stainless steel housing, the rugged construction of the TPM series transmitters is complemented by a choice of pressure ports and electrical connections. The family supports options for gauge, sealed gauge, absolute and compound pressure types and offers 18 pressure ranges from 0-100mbar to 0-600bar. Further options allow for different pressure connection materials and seal types, which include EPDM for potable water applications. Bespoke calibration is also available.