Ueda Seisakusho
Ueda Seisakusho PDL/HDL Series Pressure Switch
Manufacturer: Ueda Seisakusho Co., Ltd.
Model : PDL/HDL series
Features
- The PDL/HDL series are pressure switches with a highly versatile and ultra-compact design.
- They are ideal as limit switches for upper and lower limit alarms with a single setting.
- The pressure receiving section structure is a diaphragm type for the PDL series and a piston type with high pressure resistance for the HDL series.
- In addition, various options are available to accommodate a wide range of applications.
PDL Series
■Product Information
| Item | Specification |
|---|---|
| Product Name | General-purpose ultra-compact pressure switch |
| Size | W.26Φ x H.59 mm |
| Operating Frequency | 100 cycles/min or less |
| Weight | Approx. 70 g |
| Body Dimensions | φ26 × H.59 mm |
| Pressure Receiving Part | Diaphragm Type |
| Material | Nitrile rubber (NBR) |
| Main Body & Connection Material | Zinc-plated steel |
| Fluid | Air, oil, and other non-corrosive gases and liquids |
| Connection size | R1/8 (PT1/8 male thread) |
| Mounting Orientation | Any |
| Repeatability Accuracy | ±2% (relative to set pressure) |
| Contact Configuration | SPDT (1a1b) |
| Wiring Cable | Flat connector with cap terminal wire (0.75 mm² × 2-core), 300 mm or more |
| Temperature Range | -20°C to +80°C |
| Vibration Resistance | 10G (10–2000 Hz) |
| Shock Resistance | 30G |
| CE Certification | Compliant with EU Directive 73/23/EWG |
■Option
- Pressure receiving part made of stainless steel (SUS303)
- Pressure receiving diaphragm material change (FKM, EPDM, HNBR)
- Protective cover
- Body mounting legs (brackets)
■Specifications
| Model | Pressure Adjustment Range (Range) MPa | ON-OFF Pressure Differential Range (Diff.) MPa | Pressure Resistance (MPa) | ||
|---|---|---|---|---|---|
| PDL-1-002-M-D-3 | 0.02 ~ 0.2 | 0.01 ~ 0.03 | 4.0 | ||
| PDL-1-008-M-D-3 | 0.05 ~ 0.8 | 0.02 ~ 0.05 | 4.0 | ||
| PDL-1-016-M-D-3 | 0.1 ~ 1.6 | 0.03 ~ 0.1 | 4.0 | ||
■Model Code Explanation
| (A) | Contact Configuration: 1ab (1C) |
|---|---|
| (B) | Set Pressure Range: 002 = 0.02 ~ 0.2 MPa 008 = 0.05 ~ 0.8 MPa 016 = 0.1 ~ 1.6 MPa |
| (C) | Diaphragm Type: M = Material: NBR E = Material: EPDM |
| (D) | Connection Size: R1/8 (PT1/8 Thread) |
| (E) | Tab Terminal: 6.3 × 0.8 |
| (F) | Optional Code (e.g., Stainless Steel Body Type) |
■Contact Capacity
| Voltage | Resistive Load | Inductive Load |
|---|---|---|
| AC 48V | 2A | 2A |
| DC 24V | 2A | 1A |
- Minimum Current: 5 mA
HDL Series
■Product Information
| Item | Specification |
|---|---|
| Product Name | High pressure compatible ultra-compact pressure switch |
| Size | W.26Φ x H.59 mm |
| Operating Frequency | ≤100 cycles/min |
| Weight | Approx. 70 g |
| Body Dimensions | φ26 × H59 mm |
| Pressure Receiving Part | Piston Type |
| Material | Steel |
| Main Body & Connection Material | Zinc-plated iron |
| Fluid | Hydraulic oil, non-corrosive gas or liquid |
| Connection size | R1/8 (PT1/8 thread) |
| Mounting Orientation | Any |
| Repeatability Accuracy | ±2% (against pressure setting) |
| Contact Configuration | Snap-action 1ab (1C) |
| Wiring Cable | Flat cable with crimp terminals & cap tie (0.75 mm² × 2 wires), 300 mm or longer |
| Temperature Range | -20 to +80°C |
| Vibration Resistance | 10G (10–2000 Hz) |
| Shock Resistance | 30G |
| CE Certification | EU Standard 73/23/EWG |
■Option
- Protective cover
- Body mounting legs (brackets)
■Specifications
| Model | Pressure Adjustment Range (Range) MPa | ON-OFF Pressure Differential Range (Diff.) MPa | Pressure Resistance (MPa) | ||
|---|---|---|---|---|---|
| HDL-1-030-K-D-3 | 1.0 ~ 3.0 | 0.5 ~ 0.8 | 35.0 | ||
| HDL-1-120-K-D-3 | 1.0 ~ 12.0 | 0.5 ~ 1.2 | 35.0 | ||
| HDL-1-250-K-D-3 | 2.0 ~ 25.0 | 0.6 ~ 2.5 | 35.0 | ||
■Model Code Explanation
| (A) | Contact Configuration: 1ab (1C) |
|---|---|
| (B) | Setting Pressure Range: 030 = 1.0 ~ 3.0 MPa 120 = 1.0 ~ 12.0 MPa 250 = 2.0 ~ 25.0 MPa |
| (C) | Piston Type (Material: Steel) |
| (D) | Connection Port: R1/8 (PT1/8 thread) |
| (E) | Tab Terminal: 6.3 × 0.8 |
| (F) | Option Code |
■Contact Capacity
| Voltage | Resistive Load | Inductive Load |
|---|---|---|
| AC 48V | 2A | 2A |
| DC 24V | 2A | 1A |
- Minimum Current: 5 mA
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