Vacuum Pressure switch 901 Prescal adjustable

Product Details:

Grade Industrial
Sensor Type Mechanical Adjustable Vacuum Pressure Switch
Display Analog
Seal Material NBR (Nitrile) Rubber
Thread G 1/4 (BSP) male
Outer Size Approx. 30mm x 80mm x 90mm
Material Aluminum Die Cast Housing
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Vacuum Pressure switch 901 Prescal adjustable Product Specifications

Mount Type Panel / Surface Mount
Outer Size Approx. 30mm x 80mm x 90mm
Measure Pressure Of Vacuum & Low Pressure Gases
Accuracy 2% F.S.
Accessories Mounting Bracket, Instruction Manual
Dial Material PVC/ABS Sheet
Grade Industrial
Processing Type Precision Machined
Sensor Type Mechanical Adjustable Vacuum Pressure Switch
Scale Range -0.2 to -0.9 bar (Vacuum)
Pointer Material Aluminum Painted
Diameter Pressure port: 6 mm
Finishing Powder Coated/Plated
Display Analog
Material Aluminum Die Cast Housing
Seal Material NBR (Nitrile) Rubber
Thread G 1/4 (BSP) male

Product Description

Technical Data :

Setting ranges:

Type	Setting range for upper switching point between	Maximum positive working pressure Standard/extended	Maximum negative working pressure Standard/extended
901.61	5 and 20 mbar	0,5/4 bar	/1 bar
901.62	10 and 50 mbar	0,5/4 bar	/1 bar
901.63	25 and 100 mbar	0,5/4 bar	/1 bar
901.64	50 and 250 mbar	1/4 bar	/1 bar
901.65	100 and 500 mbar	1/4 bar	/1 bar
901.66	250 and 1.000 mbar	10 bar	1 bar
901.67	500 and 1.500 mbar	10 bar	1 bar
901.68	1.000 and 3.000 mbar	10 bar	1 bar
901.91	1,0 and 6,0 bar	25 bar	1 bar
901.92	4,0 and 9,0 bar	25 bar	1 bar
901.93	7,0 and 12,0 bar	25 bar	1 bar
901.71	5 and 20 mbar	0,5/4 bar	1 bar
901.72	10 and 50 mbar	0,5/4 bar	1 bar
901.73	25 and 100 mbar	0,5/4 bar	1 bar
901.74	50 and 125 mbar	0,5/4 bar	1 bar
901.75	75 and 200 mbar	1/4 bar	1 bar
901.76	100 and 300 mbar	1/4 bar	1 bar
901.77	200 and 500 mbar	1/4 bar	1 bar
901.78	300 and 700 mbar	1/4 bar	1 bar
901.81	5 and 20 mbar (differential pressure)	100 mbar	100 mbar
901.82	10 and 50 mbar (differential pressure)	100 mbar	100 mbar

Temperature range:
Ambient temperature from 20C to 85C
Temperature of media up to 85C or 130C depending on material of pressure connection and diaphragm.

Diaphragm material:
Depending on media NBR, Silicone, FKM (Viton), EPDM. For 901.8x Silicone, others upon request.

Pressure connection:
Material: PA, PVDF, PPS, Brass, Stainless steel
Hose nipple: 5,0mm, 6,5mm, 10,0mm
Thread: M10x1, G1/8, G1/4, G1/2

Electrical rating:
Specification of the maximum values for ohmic load.
AgNi-contact:
6(1,5) A/250 VAC
2 A/24 VDC
Gilded contact:
100 mA/24 VAC
30 mA/24 VDC
On request AgNi contacts up to 10 A / 250 VAC can also be supplied.

Electrical connection:
AMP flat plug 6.3 x 0.8 mm according to DIN 46244

Protection class:
IP44 / IP54 / IP65 depending on the used protection cap

Rugged and Versatile Design

Built from precision-machined aluminum die-cast housing with powder coating or plating, the 901 Prescal vacuum pressure switch is engineered for tough industrial environments. With IP65 protection, it resists dust and water ingress, making it suitable for demanding locations. Compact dimensions and a G 1/4 (BSP) male thread ensure seamless integration into diverse machinery and automation systems.

Precise and Adjustable Performance

The switch provides highly repeatable pressure control (1% of set point) thanks to its mechanical adjustability. Pressure is easily set via a user-friendly knob and read from the analog dial, which displays a scale from -0.2 to -0.9 bar. With accuracy rated at 2% of full scale, it ensures reliable switching for sensitive vacuum and low-pressure applications.

Simple Installation and Maintenance

Installation is straightforward using the included mounting bracket and screw-type terminal connections. The panel or surface mount adaptability and comprehensive instruction manual enable rapid setup for users. Designed for industrial applications like vacuum pumps, compressors, and automation lines, the switch's durable components and clear display reduce downtime and make ongoing operation hassle-free.

FAQ's of Vacuum Pressure switch 901 Prescal adjustable:

Q: How do I adjust the set pressure on the Vacuum Pressure Switch 901 Prescal?

A: You can adjust the set pressure using the convenient knob located on the switch. Rotate the knob to set your desired vacuum point within the range of -0.2 to -0.9 bar, as indicated on the analog scale. Confirm the adjustment via the display, ensuring precise control for your application.

Q: What types of systems is this vacuum pressure switch suitable for?

A: The 901 Prescal switch is designed for use with vacuum pumps, compressors, and automation systems, monitoring and controlling vacuum and low-pressure gases in industrial settings. Its robust construction and adjustable set point make it ideal for demanding process and machinery control tasks.

Q: Where can I mount the Vacuum Pressure Switch 901 Prescal?

A: This switch supports both panel and surface mounting. Use the provided mounting bracket and follow the instructions in the included manual to secure it in the optimal position for your machinery or process system. The compact outer size allows flexible placement options.

Q: What benefits does the SPDT contact type provide?

A: The Single Pole Double Throw (SPDT) contact allows you to integrate the switch into circuits requiring either a normally open or normally closed connection. Rated at 250V AC, 5A max, it offers compatibility with a wide range of industrial control and automation devices.

Q: How do I connect the electrical terminals of the switch?

A: The switch features screw-type terminals, making it easy to connect wires securely. Carefully follow the wiring diagram provided in the instruction manual to ensure safe and reliable setup, and double-check the connections before powering the system.

Q: When is maintenance required for this vacuum pressure switch?

A: Routine maintenance involves visually inspecting the unit for cleanliness and ensuring the connections remain secure. Because the switch is built with durable materials and features IP65 protection, minimal regular maintenance is needed, but periodic checks help sustain reliable operation.

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Vacuum Pressure Switch 901 Prescal Adjustable Minimum Order Quantity : 1 Size : Standard Color : Grey Usage : Industrial Product Type : Vacuum Pressure Switch 901 Prescal Adjustable

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