Description
Mid-West® Instrument Model 106 Bellows ΔP Gauge – ± 1/2% or ± 1% Full Scale Accuracy. System pressure is applied to the internal volume of a bellows and mechanical linkage assembly. As pressure changes, the bellows and linkage assembly move to cause an electrical signal to be produced or to cause a gauge pointer to move. The major components of the Model 106 are a two-piece body, bellows sensing element and over-pressure assembly, a torque tube assembly, a range spring and the gauge front assembly.
The body halves provide the pressure containment function. They also clamp the sensing element and over-pressure assembly between the halves, isolating the high side and low side pressures of the system. The high side body half also provides a mount for the torque tube assembly and the gauge front assembly.
This assembly incorporates a bidirectional relief valve which provides over-pressure protection in both directions. When over-pressured from the high side, the valve is opened by a mechanical stop as the sensing element deflects to its maximum travel. When over-pressured from the low side, the spring-loaded valve opens when the differential pressure exceeds its maximum rating. The opening of the valve in either direction equalizes the pressure and protects the unit.
Specifications
| Gauge: Brand | Mid-West |
| Gauge: Type | Dial Indicating Gauge |
| Gauge: Product Unit of Measure | psig |
| Gauge: Process Connection Location | Back Mount |
| Gauge: Case Material | Aluminum |
| Gauge: Wetted Material | Stainless Steel |
| Gauge: Dial Size | 4-1/2 in (110 & 115 mm) |
| Gauge: Process Connection Size | 1/4 NPT Female |
| Gauge: Accuracy | ±1% |
| Gauge: Measuring Principle | Bellows |
| Gauge: Pressure Type | Differential Pressure, Differential Pressure |
| Gauge: Model | 106 |
| Gauge: Scale Range | ≥ 10 psi (0.6 bar) to ≤ 15,000 psi (1,000 bar) |