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Product Overview: wikaa Model 111.12.040 Bourdon Tube Pressure Gauge
1. Introduction
The wikaa 111.12.040 is a precision-engineered Bourdon tube pressure gauge designed for industrial and commercial applications requiring reliable pressure measurement. Part of wikaa's globally recognized 111.12 series, this model combines durability, accuracy, and cost-effectiveness, making it a preferred choice across industries such as hydraulics, pneumatics, HVAC, and medical engineering
. Its modular design allows customization for specific operational needs, while adherence to EN 837-1 and ASME B40.100 standards ensures compliance with international safety and performance benchmarks .
2. Key Features
2.1 Robust Construction
Wetted Parts: Made from copper alloy, ensuring resistance to corrosion from non-clogging, non-crystallizing fluids and gases. This material choice enhances longevity in harsh environments
Case Material: Available in black ABS plastic (for smaller sizes) or painted steel (3½" models), providing durability and protection against mechanical stress .
Dial and Pointer:
Dial: White plastic or aluminum with black/red lettering for clear readability. Larger models (3½" and 4") feature aluminum dials with stop pins to prevent pointer over-rotation .
Pointer: Black ABS plastic (for 1½", 2", 2½") or aluminum (for larger sizes), designed for minimal friction and precise indication .
2.2 Measurement System
Bourdon Tube: Utilizes a C-shaped copper alloy Bourdon tube for pressures ≤870 psi (60 bar) and helical coils for higher ranges (>870 psi). The tube's deflection under pressure is mechanically transferred to the movement, ensuring linear and accurate readings
Accuracy: ±3/2/3% of span (ASME B40.100 Grade B), suitable for steady, fluctuating, or short-term pressure monitoring .
2.3 Modular Design
Customization: Supports combinations of case materials, process connections, dial sizes, and pressure ranges. This flexibility makes it adaptable to diverse industrial setups
Process Connection: Features a Center Back Mount (CBM) with 1/8" or 1/4" NPT threads, enabling secure installation in pipelines or control panels .
3. Technical Specifications
3.1 Pressure Ranges
Standard Range: 0-25 bar (0-30 psi) for general-purpose applications, with options for vacuum/compound ranges up to 200 psi (16 bar) or higher pressures up to 6,000 psi (400 bar) upon customization .
Working Pressure Limits:
Steady: ¾ of full scale
Fluctuating: ⅔ of full scale
Short-term: Full scale value .
3.2 Environmental Compatibility
Temperature Range:
Ambient: -40°F to +140°F (-40°C to +60°C)
Media: Up to +140°F (+60°C)
Temperature Error: ±0.4% of span per 18°F (10°K) deviation from 68°F (20°C) .
3.3 Dimensions and Mounting
Case Sizes: Available in 1½" (40 mm), 2" (50 mm), 2½" (63 mm), and 4" (100 mm). The 3½" (94 mm) variant includes a U-clamp for secure mounting .
Window: Snap-in acrylic for smaller sizes; threaded polycarbonate for 3½" models, ensuring visibility and impact resistance .
4. Applications
The 111.12.040 is ideal for:
Hydraulic/Pneumatic Systems: Monitoring pumps, compressors, and regulators .
Water Treatment and HVAC: Pressure control in heating, cooling, and filtration systems
Medical and Industrial Gas Systems: Safe measurement of oxygen and other non-corrosive gases
General Industrial Use: Suitable for fluids that do not corrode copper alloy components
| Category | Specification |
| Product Model | wikaa 111.12.040 |
| Series | 111.12 (Industrial Bourdon Tube Gauges) |
| Application | Hydraulics, pneumatics, HVAC, water treatment, industrial gas systems, general process monitoring |
| Measurement Principle | C-shaped or helical Bourdon tube (depending on pressure range) |
| Accuracy | ±3-2-3% of span (ASME B40.100 Grade B) |
| Pressure Ranges | Standard: 0-25 bar (0-30 psi) |
| Optional: Vacuum/compound ranges up to 16 bar (200 psi) or high-pressure variants up to 400 bar (6,000 psi) | |
| Overpressure Safety | Steady: 75% of full scaleFluctuating: 66% of full scaleShort-term: 100% of full scale |
| Case Material | Small sizes (1½", 2", 2½"): Black ABS plasticLarge sizes (3½", 4"): Painted steel |
| Wetted Parts | Copper alloy (standard)Optional stainless steel for corrosive media (custom order) |
| Process Connection | Thread: 1/8" NPT or 1/4" NPT (Center Back Mount - CBM) |
| Dial Size | 1½" (40 mm), 2" (50 mm), 2½" (63 mm), 3½" (94 mm), 4" (100 mm) |
| Dial Material | Small sizes: White plasticLarge sizes (3½", 4"): Aluminum |
| Pointer Material | Small sizes: Black ABS plasticLarge sizes: Aluminum |
| Window Material | Small sizes: Snap-in acrylic3½" models: Threaded polycarbonate |
| Temperature Limits | Ambient: -40°F to +140°F (-40°C to +60°C)Media: Up to +140°F (+60°C) |
| Temperature Error | ±0.4% of span per 18°F (10°K) deviation from 68°F (20°C) |
| Mounting | Standard: Center Back Mount (CBM)3½" models: Includes U-clamp for panel mounting |
| Compliance | EN 837-1 (EU standards)ASME B40.100 (U.S. standards) |
| Safety Warning | Contains nickel and chromium (California Prop 65 compliant). For details, visit |
| Weight | ABS case: ~0.2-0.4 kg (varies by size)Steel case: ~0.5-1.0 kg |
5. Compliance and Safety
Standards: Complies with EN 837-1 (European) and ASME B40.100 (U.S.) for design and safety .
Safety Warning: Contains nickel and chromium, chemicals known to the State of California to cause cancer and reproductive harm.
6. Ordering and Documentation
Pricing: Starts at $25.77 (excl. taxes and shipping) for standard configurations .
Delivery: Standard models ship in 1-2 business days; customized configurations require 3-5 days .
Technical Support: Data sheets (e.g., PM 01.01), operating instructions, and product certifications are available for download via wikaa's technical portal .
7. Advantages Over Competing Models
Cost-Efficiency: Mass-produced on modern production lines, ensuring affordability without compromising quality
Versatility: Modular components allow tailored solutions for niche applications
Global Availability: Supported by wikaa's extensive distribution network, including Rodavigo (Ref. 12511112040) and direct online purchases .
8. Conclusion
The wikaa 111.12.040 Bourdon tube pressure gauge exemplifies engineering excellence, offering precision, durability, and adaptability. Its compliance with international standards, coupled with modular customization, makes it indispensable for industries requiring reliable pressure measurement. For detailed specifications or custom orders, users are encouraged to consult wikaa's technical documentation or contact authorized distributors.
Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information.
Q: What is the delivery time?
A: Our delivery time is within 3-7 days after we get your payment;
for large qty mass orders, the time should be confirmed again for you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.
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