The LR-Cal DFP is a microprocessor based digital pressure gauge, made of particulary high long-term stable analogue section and a 16 bit A/D converter which ensure 65,000 internal divisions. These features, together with a 0.1% accuracy class, make it ideal as a reference instrument: in fact, the LR-Cal DFP is proposed as a first line sample for Quality Insurance Laboratories.
The digital reference pressure gauge LR-Cal DFP has internal batteries with 1 year autonomy, also guaranteed by the Auto-PowerOff function, which activates if no measurement changes are detected in the previous 30 minutes (adjustable).
The user can defin his own engineering unit for force (or weight). Then LR-Cal DFP is supplied calibrated in "bar" pressure unit as a normal pressure gauge. It is up to the installer to set the full scale value in the force (or weight) unit by uwing the following formular:
F[N] = P • D2 • ∏ / 40
P = pressure in bar, D = diameter of cylinder in mm, ∏ = pi
F[kg] = F[N] / 9.80665
F = force, N = Newton, kg = Kilogramm
9.80665 = local gravity m/s²
In order to increase the level of integration among components, a combined (traditional and SMT) technology has been used, that makes this reference gauge more resistant against mechanical stresses and vibrations and guarantees maximum reliability for the circuit.
As an option, the LR-Cal DFP is available with a RS232 interface. A connection cable is available as an option, a simple PC software to read out the RS232 interface is available free of charge (by download). Furthermore, a build-in version for panel mounting 83 x 83 mm with back connection is available as option, as well as a version for maines power supply (230 VAC, instead of batteries).
|Pressure Range [bar]||Max. display resolution [bar]|
|Lineariy and hysteresis||<=±0,1% v.E.|
|Measurement rate (if digital filter is set to zero)||10 per second (every 100 ms one reading)|
|Temperatures||Reference +23°C; Ambient 0...+50°C; Storage -10...+60°C|
|Temperature influence||on Zero <=±0.002%; on Sensitivity <=0,002%|
|Programmable functions||Zero: 50%; Digital filter: 0...99%; Display resolution: 1, 2, 5 or 10 digits; Pressure unit: bar; Force units: daN, kN; Weight units kg, t (scalable); Optional RS232 interface: Baud rate 19200, 99600, 4800; Peak function: positive (+) and negative (-)|
|Display||LCD, height 16 mm|
|Power supply||4 Alkaline batteries each 1.5 V, size AA|
|Pressure / Overpressure||Service pressure: 100% FS; High dynamic pressure: 75% FS; Permissible pressure max. 150% FS; Breaking pressure >300% FS|
|Pressure port||1/2" BSP male|
|Recommended sealing||USIT A 63-18|
|Tightening torque||28 Nm (Tightening wrench: 27 mm)|
|Housing||Material: aluminium; Dimension: 132 x 80 x 48 mm|
|Optional RS232 interface||9-polig D-SUB (female)|
|TLDMM-DK||Sealing cone, recommended for pressure ranges above 1000 bar|
|VRS-G12||Volume reducer, recommended for use with pressure test pumps LR-Cal LPP 40 or LR-Cal LPP 60|
|-EBA||Build-in version (back connection, for panel mounting|
|-SNT||Power supply mains 230 VAC (instead of batteries)|
Datasheet and Manual can be downloaded as PDF files. To open PDF files, you need the ADOBE READER. You can get this software free of charge from ADOBE.