설명
Pressure transmitters for RELATIVE, ABSOLUTE and VACUUM measures Nominal pressures from 100 mbar to 2000 bar AMPLIFIED outputs: 4-20mA, 0.5-10.5V and 0.5-5.5Volt Linearity and hysteresis 0.25%, 0.50% or 1% LOW COST
Pressure transmitters belonging to TP38 series distinguish themselves for high long-term reliability of mechanical and electrical features and for their low price, obtained by minimising production costs with the use of new technologies, robotized stations and a diffuse use of LASER.
Among the sectors where these transmitters are employed, some are worth being underlined: pneumatic, hydraulic, refrigerating and level plants. They are also used in test benches and in materials testing machines.
The sensitive part, in contact with pressure, is entirely made of 17- 4 PH corrosion-proof stainless steel.
High vacuum thermal treatments which stainless steel is subjected to, ensure the correct functioning even when highly dynamic stresses are involved. Monolithic execution of measuring element, without any assembling via tight rings or gaskets, guarantees a high long-term stability, with negligible hysteresis and zero drift. Pressure is internally detected by a full bridge strain gauge, which assures the maintenance of performances even in presence of peaks.
Electronic section, realised via SMD technology, consists of a high precision instrumental amplifier and a stable supplier, protected against short circuits and polarity inversion.
Every pressure transmitter is entirely LASER welded and completely resin-encapsulated, to ensure insensitivity and a high degree of hermetic tight.
During production cycle, pressure transmitters are thermally compensated, tested and individually calibrated with the use of completely automated stations that analyse and record data.
Dimensions
Technical Data
| RELATIVE PRESSURE (R) Zero at atmospheric pressure |
0.5 – 1 – 2.5 – 5 – 10 – 20 bar |
| ABSOLUTE PRESSURE (A) Zero at absolute vacuum |
50 – 100 – 250 – 350 – 500 – 700 bar *1000 – *1500 – *2000 bar |
| LINEARITY and HYSTERESIS | ≤ ± 1.0 % (see options) |
| TEMPERATURE EFFECT (1°C) a) on zero b) on sensitivity |
≤ ± 0.02% ≤ ± 0.02% |
| NOMINAL SENSITIVITY | 4-20mA (2 or 3 wires) 0.5 – 5.5 V or 0.5 – 10.5 V |
| NOMINAL POWER SUPPLY | 4-20mA and 0.5 – 5.5V 🠒 12-24Vdc 0.5 – 10.5V 🠒 15-24Vdc |
| MAX. POWER SUPPLY MAX. ABSORPTION 3 wires MAX. ABSORPTION 2 wires LOADING RESISTANCE tension LOADING RESISTANCE current INSULATION RESISTANCE ZERO BALANCE RESPONSE FREQUENCY |
28Vdc 30mA 20mA min. 3KΩ from 0 to 470 Ω >2 GW ≤ ± 1% 1 kHz |
| LIMIT MECHANICAL VALUES REFERRED TO NOMINAL PRESSURE a) service pressure b) max. permissible pressure c) breaking pressure d) highly dynamic pressure |
100% 150% >300% 75% |
| REFERENCE TEMPERATURE WORKING TEMPERATURE STORAGE TEMPERATURE |
+23°C -25/+70°C -25/+80°C |
| PROCESS COUPLING TIGHTENING WRENCH TIGHTENING TORQUE |
1/4″Gas (*1/2″Gas) Maschio / BSP Male 27 mm 28 N·m |
| PROTECTION CLASS (EN 60529) CASE EXECUTION MATERIAL SENSOR EXECUTION MATERIAL ELECTRICAL CONNECTION |
IP67 INOX AISI 304 INOX 17-4 PH M12x1 4 poles male connector |
Options:
- LINEARITY and HYSTERESIS £ ± 50 %
- LINEARITY and HYSTERESIS £ ± 25 %
- RESPONSE FREQUENCY UPPER 1 kHz
- Female 4 poles straight M12x1 CONNECTOR complete PVC molded CABLE, shielded, length 3m.
- MOCA certification for food applications (pressure ≥ 20bar)
Electrical connections
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