Client: A Leading HVAC & Industrial Automation System Integrator
Industry: Industrial Automation & HVAC System Integration
Product: PT600 Micro Differential Pressure Transmitter
Challenge: Setra supply delay put critical project at risk
Result: 2-week emergency delivery, 1/5 the cost, full performance satisfaction
Client Overview
This client is a professional system integration provider specializing in industrial automation, building energy management, and HVAC control systems. With years of experience serving manufacturing facilities, commercial buildings, and cleanroom projects across central China, the company has built a reputation for reliable engineering and on-time project delivery.
For their ongoing cleanroom ventilation upgrade project, client’s engineering team had originally specified the Setra ASL1005MD1F11B3A00 (500Pa) micro differential pressure transmitter — a well-known imported brand commonly used in precision air pressure monitoring applications.
The Challenge: A Supply Delay That Threatened Project Deadlines
In Q2 2024, Hanergy placed a batch order for Setra ASL1005 differential pressure transmitters through their regular distributor. The initial lead time quoted was 6–8 weeks, which fit their project schedule perfectly.
Three weeks before the planned installation date, the distributor delivered bad news:
“Setra’s factory has pushed back production. The new delivery estimate is another 8–10 weeks. We’re sorry, but there’s nothing we can do on our end.”
This delay created a serious problem for Hanergy:
- The cleanroom project had a hard commissioning deadline — delaying meant penalty clauses in the contract
- Their end client was already on-site preparing for system testing
- Finding a drop-in replacement on short notice seemed nearly impossible, especially for a precision 500Pa micro differential pressure application
The engineering team started reaching out to every supplier they knew, looking for a domestic alternative that could match the Setra unit’s performance and ship immediately.
The Solution: Dabey PT600 as an Emergency Replacement
Hanergy’s procurement manager contacted Dabey Sensor after finding our product catalog online. They explained the situation urgently: they needed micro differential pressure transmitters, 500Pa range, stable performance, and — most critically — fast delivery.
Our technical team reviewed the Setra ASL1005 specifications against our PT600 series and confirmed:
| Parameter | Setra ASL1005MD1F11B3A00 | Dabey PT600 | Match? |
|---|---|---|---|
| Measuring Range | 0–500Pa | -10~10kPa (custom 0–500Pa available) | ✓ |
| Accuracy | ±0.07% FS RSS | 0.2% FS (0.1% FS custom option) | ✓* |
| Output Signal | 4–20mA (2-wire) | 4–20mA / 0–5V / 0–10V / Modbus | ✓ |
| Power Supply | 24V DC | 10–30V DC | ✓ |
| Pressure Connection | Barbed fittings | Barbed hose fittings | ✓ |
| Housing | Stainless steel / plastic | Aluminum alloy | ✓ |
*For the 500Pa range, PT600’s 0.2% FS accuracy fully meets the project’s control requirements.
Why PT600 Was the Right Fit
- Ready-to-ship inventory: We maintain stock of standard range units, and custom 500Pa calibration can be completed in our in-house lab within 3 working days.
- Form factor compatibility: The barbed air nozzle design and mounting dimensions are directly interchangeable with the Setra unit — no modification needed for installation.
- Multi-signal flexibility: PT600 supports 4–20mA output matching the original specification, plus optional Modbus for future system upgrades.
- Technical support: Our engineers provided wiring diagrams and commissioning guidance before shipment, so Hanergy’s team could install with confidence.
Total lead time from order confirmation to delivery: 2 weeks.
Implementation & On-Site Performance
The PT600 units arrived at Hanergy’s warehouse on schedule. Their engineering team installed them during the planned maintenance window, following the same wiring and mounting procedure they had prepared for the Setra transmitters.
Key observations during commissioning:
- Zero-point stability: After 24-hour power-on stabilization, the zero drift was within ±0.1% FS — well within the project’s tolerance requirements
- Response time: The 5ms response speed tracked duct pressure changes smoothly during damper operation tests
- Signal consistency: All 12 units in the batch showed consistent output readings across the full range, with less than 0.15% unit-to-unit variation
- Installation compatibility: The barbed fittings connected directly to the existing tubing without any adapters or modifications
The cleanroom system passed commissioning on schedule. The end client’s QA team verified all pressure monitoring points and signed off without reservations.
Results & Benefits
Three months after installation, we followed up with Hanergy’s engineering team to hear how the PT600 units were performing.
What They Told Us
“Honestly, we were nervous at first. Switching from an imported brand to a domestic supplier last minute — you never know what you’re going to get. But the PT600 units have been rock solid. The readings are stable, the calibration holds, and we haven’t had a single issue in three months of continuous operation.”
— Senior Engineer, Hunan Hanergy Technology
Why Dabey Sensor for Differential Pressure Transmitters?
Domestic Manufacturing, Global Standards
- In‑house MEMS sensing technology with proprietary calibration algorithms
- Full production control — from chip packaging to final testing — means shorter lead times and flexible customization
- ISO9001 certified factory with strict quality control at every production stage
Built for Real Industrial Conditions
- Wide temperature compensation range (-10°C to +60°C) for stable performance across seasons
- IP54 aluminium housing against dust and moisture for indoor industrial deployment
- Shielded wiring mitigates electromagnetic interference on factory floors
- Low long‑term drift ≤0.2%FS/year for reliable year‑round differential pressure measurement
Flexible Integration & OEM Support
- Multiple output options: 4‑20 mA, 0‑5 V, 0‑10 V, Modbus RTU
- Direct compatibility with PLC, DCS and building automation platforms
- Custom pressure ranges, connectors and mounting forms for volume OEM orders
Responsive Project‑Focused Service
- Quick lead‑time for urgent replacement or emergency‑order demands
- Application engineering support for selection, wiring and commissioning
- Datasheets, CAD drawings and technical guidance supplied on request
