APR3850 Pressure Transmitter
For of industrial pressure measurement applications where a hygienic flush diaphragm connection is required.
Key features
- Easy clean flush membrane to prevent clogging
- Thick film sensor technology for long service life
- Pressure ranges to 400 bar
- ATEX/IECEx option available (includes M1 for mining applications)
- Integral O-ring seal option to ensure flush pressure seal
About the APR3850 Flush Diaphragm / Pressure Transmitter
The APR3850 pressure transmitter has been designed to meet the requirements of the majority of industrial pressure measurement applications where a hygienic flush diaphragm connection is required. Robustly constructed from stainless steel this range of pressure transmitters incorporates the latest strain gauge technology together with a custom IC amplifier offering excellent stability and accuracy over a long service life. This transmitter is particularly suitable for use with high viscosity materials.
Typical applications include food processing, pharmaceutical, petrochemical, waste water and slurry handling. The flush membrane can be easily cleaned for long term reliability and outstanding performance.
The APR3850 offers a stable and accurate output signal of 4-20 mA with options for 0-5 Vdc, 0-10 Vdc, 0-20 mA and other output signals. Electrical connection is via a detachable DIN connector allowing easy access to zero and span adjustment. In addition to the standard 1/2” BSP connection, optional 1” BSP and 1/2” NPT male flush diaphragm process connections are also available. Pressure ranges available from 0-4 bar to 0-400 bar. Optional weldable boss is available to ensure flush-face installation of transmitter to tanks and pipe-work.
An optional ATEX and IECEx approved version of this product is available for explosion protection for flammable gases (zone 0), dusts (zone 20) and mining areas (group I M1).
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Talk to an expertTechnical Specifications
| Specification | Value |
|---|---|
| Accuracy nlhr | ≤ ±0.3 % of span BFSL |
| Atex/iecex approval option (4-20ma version only) | Ex II 1 G Ex ia IIC T4 Ga (zone 0) Ex II 1 D Ex ia IIIC T135°C Da (zone 20) Ex I M 1 Ex ia I Ma (group 1 M1 |
| Atex/iecex safety values | Ui = 28 V, Ii = 119 mA, Pi = 0.65 W, Li = 0.1 μH, Ci = 62 nF, Temperature Range = -20 °C to +70 °C, Max. cable length = 105 m |
| Electrical connection | Mating socket EN175301-803 Form A (ex DIN43650) rated IP65 with PG9 cable entry (other options available) |
| Insulation resistance | > 100 MΩ @ 50 VD |
| Load driving capability | 4-20 mA: RL < [UB - 13 V] / 20 mA; (e.g. with supply voltage (UB) of 36V max. load (RL) is 1150 Ω); 0-5 V: max load RL > 5 KΩ; 0-10 V: max load RL > 10 KΩ |
| Operating ambient temperature | -20 °C to +85 °C (-4 °F to +185 °F) |
| Operating media temperature | -20 °C to +85 °C (-4 °F to +185 °F) |
| Output signal | 4 – 20 mA (2 wire), 0 – 5 V (4 wire), 0 – 10 V (4 wire) |
| Pressure reference | Gauge |
| Protection of supply voltage | Protected against supply voltage reversal up to 50 V |
| Sensor technology | Ceramic Thick Film |
| Standard pressure ranges (bar) | 0-100 mbar; 0 – 4 bar; 0 – 10 bar; 0 – 25 bar; 0 – 100 bar; 0 – 250 bar; 0 – 400 bar (other options available) |
| Standard pressure ranges (psi) | 0-60 psi; 0-150 psi; 0-300 psi; 0-1,500 psi; 0-3,000 psi; 0-6,000 psi (other options available) |
| Storage temperature | +5 °C to +40 °C (+41 °F to +104°F) Recommended Best Practice |
| Supply voltage | 13 – 36 VDC, 13 – 30 VDC, 13 – 30 VDC |
| Zero offset and span tolerance | ±1.0% FS at room temperature; ±5% FS (approx.) adjustment with easy access trimming potentiometers on amplified versions only |