DIAVAC LIMITED PT-1DA – Vacuum Gauge Controller | Pirani Sensor Platform
Engineering Background
DIAVAC LIMITED is a Japanese precision vacuum instrumentation manufacturer with decades of expertise in vacuum measurement and control systems. The PT-1DA is a compact, high-accuracy Pirani gauge controller designed for integration into industrial vacuum process lines, research equipment, and semiconductor fabrication environments where reliable low-pressure measurement is critical.
Product Positioning
The PT-1DA serves as the primary vacuum sensing and display module in systems requiring continuous monitoring of rough-to-medium vacuum ranges. It is engineered for OEM integration and standalone panel mounting, offering procurement engineers a proven, drop-in solution compatible with standard vacuum system architectures.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model | PT-1DA |
| Manufacturer | DIAVAC LIMITED |
| Type | Pirani Vacuum Gauge Controller |
| Measurement Range | 1×10⁻³ to 1×10³ Pa (Pirani principle) |
| Sensor Compatibility | DIAVAC Pirani gauge heads (PT series) |
| Display | Digital LED / LCD readout (model-dependent) |
| Output Signal | Analog voltage output proportional to pressure |
| Power Supply | AC 100–240 V, 50/60 Hz |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Weight | 1,490 g |
| Mounting | Panel mount / rack compatible |
| Country of Origin | Japan |
Proven Application Environments
- Semiconductor wafer processing and thin-film deposition chambers
- Industrial vacuum furnaces and heat treatment systems
- Vacuum packaging and food processing lines
- Research laboratory vacuum rigs and test benches
- Leak detection and vacuum integrity testing systems
- Coating and sputtering equipment
Engineering Advantages
- Wide measurement range: Covers rough to medium vacuum in a single unit, eliminating the need for multiple sensors.
- Stable Pirani sensing: Thermal conductivity-based measurement delivers repeatable readings across process cycles.
- Analog output: Direct integration with PLCs, DCS, and SCADA systems via standard voltage signal.
- Compact form factor: Panel-mount design minimizes cabinet footprint in control enclosures.
- OEM-grade reliability: Built to DIAVAC’s industrial quality standards for continuous-duty operation.
System Architecture & Signal Flow
The PT-1DA operates on the Pirani (thermal conductivity) principle. The gauge head sensor is connected to the controller via a dedicated cable. The controller supplies excitation power to the sensor filament, measures the thermal loss as a function of gas pressure, and converts this to a calibrated pressure reading displayed on the front panel. The analog output signal (typically 0–10 V DC) is simultaneously available at the rear terminal block for connection to upstream PLC analog input modules or data acquisition systems. Relay setpoint outputs (where fitted) provide direct interlock capability for vacuum process control sequences.
Sourcing & Quality Verification
- All units sourced through verified industrial distribution channels
- Pre-shipment inspection: visual, label, and functional continuity check
- Original manufacturer packaging preserved where available
- Traceability documentation available upon request
- Konmask.com specializes in genuine OEM automation components — no counterfeit risk
Procurement Process
- Confirm part number PT-1DA and required quantity with your engineering team
- Submit inquiry or place order directly on Konmask.com
- Receive order confirmation and lead-time estimate within 1 business day
- Units dispatched with commercial invoice, packing list, and available test records
- Post-delivery technical support available via email or phone
Technical FAQ
Q: Is the PT-1DA compatible with third-party Pirani gauge heads?
A: The PT-1DA is optimized for DIAVAC PT-series gauge heads. Compatibility with third-party sensors depends on connector type and signal conditioning — contact us for cross-reference support.
Q: What analog output range does the PT-1DA provide?
A: The standard output is a logarithmic analog voltage signal. Exact range and scaling should be confirmed against the original DIAVAC datasheet for your specific revision.
Q: Can the PT-1DA be integrated with a Siemens or Mitsubishi PLC?
A: Yes. The analog voltage output connects directly to standard AI (analog input) modules on any major PLC platform including Siemens S7, Mitsubishi iQ-R/F, and Allen-Bradley ControlLogix.
Q: What is the typical lead time?
A: In-stock units ship within 3–5 business days. For out-of-stock items, lead time is typically 2–6 weeks depending on manufacturer availability.
Q: Do you provide a warranty?
A: Yes. All units carry a 90-day functional warranty against defects. Extended warranty options are available — contact us for details.
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