Pneumatic Level Switch

NLS

DESCRIPTION
Features

Pneumatic Level Switch

The NLS Pneumatic Level Switch is a reliable solution for detecting levels of viscous and sticky liquids that can halt traditional float switches. With minimal moving parts, the NLS offers long-lasting performance and durability. This pneumatic point level sensor operates without requiring power for its sensing elements and provides a dry contact output for energy-efficient operation. It is field adjustable by simply installing a ½-inch pipe at the bottom of the sensor housing, allowing you to customize the switch point easily by adjusting the pipe length.

Durable & Low-Maintenance: Long-lasting, low-maintenance design
Energy Efficient: No power needed for operation
Flexible Adjustment: Easily adjustable switch point
Handles Tough Liquids: Ideal for viscous and sticky liquids
Cost-Saving Output: Dry contact output for energy savings
Versatile Options: Various models available for different materials and applications

Description
Additional information

NLS Datasheet

NLS User Manual

Performance

SPDT switch
Detection Range: 8 – 200 in (200 – 5,000 mm)

Environmental

Operating Temperature: -4º – 158º F (-20º – 70º C)

Connectivity

Output Contact Rating: 250 V 10 A AC; 115 V 0.5 A DC (resistive)

Physical

Housing:
- ADC12
- SS41 (NLS-3)
Diaphragm: Neoprene® , Viton®

Certifications

NEMA 4, IP42
NEMA 1, IP20 (NLS-3)

How does the NLS Pneumatic Level Switch work?

The NLS Pneumatic Level Switch detects liquid levels using a diaphragm that responds to pressure changes. Unlike traditional float switches, it operates without power for its sensing elements, making it ideal for viscous and sticky liquids.

What types of liquids can the NLS detect?

The NLS is designed to handle a wide range of liquids, including water, oil, wastewater, and other viscous or sticky substances that could hinder standard float switches.

Can I adjust the switch point in the field?

Yes, you can easily adjust the switch point by installing a ½-inch pipe at the bottom of the sensor housing. The pipe length determines the detection level.

What industries commonly use the NLS Level Switch?

Industries such as wastewater treatment benefit from its reliable and low-maintenance design.

What is the detection range of the NLS switch?

The detection range is 8 to 200 inches, allowing flexibility for different tank and vessel sizes.

OUTPUT	Voltage
ENCLOSURE PROTECTION	IP20, IP42, NEMA 1, NEMA 4
INDUSTRY	Industrial Automation

WARRANTY

APG warrants its products to be free from defects in material and workmanship under normal use and service of the product for 24 months from the date of shipment from APG, unless otherwise specified by APG in writing. Read our full warranty policy HERE.

RETURNS

Returns and allowances must be authorized by APG in advance, which authorization may be granted or withheld by APG in APG’s sole and absolute discretion. Read our full return policy HERE.

Pneumatic Level Switch