Description
An intrinsically safe level probe for hazardous areas — fuel, ballast, service and freight tanks. A hermetically sealed stainless steel case of 27 mm diameter on an FEP cable may be immersed to 100 m; the two-wire electronic module is fed with 16 … 30 V through an intrinsically safe isolating amplifier suitable for HART and returns 4 … 20 mA with a superimposed HART signal. Everything is set over that signal: measuring range, turn down up to 4 : 1, self stability, filter and damping, linearisation and temperature compensation. Eleven input ranges cover 0.1 to 10 bar, of which three are preferred. Accuracy is 0.125 % of span above 0.25 bar according to BFSL. The manufacturer names the ATEX certification and the approval by Germanischer Lloyd for the maritime field as the outstanding features.
Measurement and output
- Hydrostatic pressure, 11 ranges 0.1 … 10 bar
- Preferred 0.4 · 1 · 2.5 bar
- 4 … 20 mA, 2-wire, with HART signal
- Accuracy 0.125 % of span above 0.25 bar
- Non-linearity 0.2 % of span (BFSL)
- Turn down up to 4 : 1, set over HART
- Supply 16 … 30 V DC, < 25 mA
- Operation −10 … +85 °C
Device and approval
- ATEX II 1G Ex ia IIA T4, EPL Ga
- Gas and vapour in zones 0, 1 and 2
- Case and cap CrNi steel 1.4435, option Hastelloy
- Cable FEP, tensile strength 500 N
- IP68, immersion up to 100 m
- Weight approx. 200 g plus 80 g per m of cable
- Approval by Germanischer Lloyd, maritime
- Process connection G1/2B, A/F 24
All technical data, dimensions and available versions are listed in the datasheet for download.