The GE/Druck DPI 615 is a portable, self-contained low pressure calibrator combining pressure generation, fine control, and measurement in a single instrument. It delivers accurate pressure calibration across pneumatic and hydraulic ranges, with integral sources spanning −850 mbar to 20 bar pneumatically and 0 to 400 bar hydraulically. The unit measures pressure (gauge, absolute, sealed gauge), electrical parameters (mA up to ±55 mA; V up to ±50 VDC), and switch states. A large dual-parameter graphic LCD display supports field operations, while RS232 connectivity enables two-way PC communication for procedure download and data upload with PASS/FAIL analysis and graphical reporting. Data logging capacity reaches 10,000 values with 92 Kbytes storage. Battery-powered operation via six 1.5 V C cells provides up to 60 hours nominal use; optional NiCad rechargeable pack available. The DPI 615 meets ATEX and CENELEC certification for intrinsically safe operation in hazardous areas.
## Technical Specifications
**Pressure Generation**
• Integral pneumatic source: −850 mbar to 20 bar (−12 psi to 300 psi)
• Integral hydraulic source: 0 to 400 bar (0 to 6000 psi)
• Pneumatic ranges: −1 to 20 bar (−14.5 psi to 300 psi)
• Low pressure ranges: ±1.0 to ±60 inH₂O
**Measurement Parameters**
• Pressure modes: gauge, absolute, sealed gauge
• Current: ±55 mA maximum
• Voltage: ±50 VDC maximum
• Switch state monitoring (open/closed)
• Ambient temperature via integral sensor
• External sensor compatibility for extended range and differential pressure
**Accuracy Performance**
• 0.025% FS for ranges 200 mbar to 700 bar
• 0.025% FS for ranges 2.5 mbar to 700 bar
• 0.025% FS for pneumatic ranges 3 psi to 300 psi (calibrator)
• 0.025% FS for ranges 500 psi to 10,000 psi (indicator mode)
• 0.025% FS for hydraulic ranges 1000 psi to 6000 psi
• ±0.05% span accuracy for low pressure ranges (±1.0 to ±60 inH₂O)
• Combined non-linearity, hysteresis, repeatability: 0.05% FS (±70 mbar/2 inHg) and 0.05% span (up to ±150 mbar/4.4 inHg)
• Temperature coefficient: 0.004% reading/°F relative to 68°F
**Output Capabilities**
• Pressure generation
• mA step and ramp outputs (maximum 24 mA)
• 10 VDC and 24 VDC energizing supplies
**Data & Communications**
• Storage capacity: 92 Kbytes
• Data logging: up to 10,000 values
• RS232 interface for PC connectivity
• Two-way communication for procedure automation and results upload
• Field error calculations with PASS/FAIL reporting
**Physical & Environmental**
• Display: 2.4 in × 2.4 in graphic LCD with backlight
• Pressure connections: 2 × 1/8 in ID hose adaptors
• Weatherproof construction
• Power: six 1.5 V C alkaline cells (60 hours nominal at 20°C) or optional NiCad pack (20 hours nominal)
• Intrinsically Safe certified (ATEX, CENELEC) for classified environments
