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EMERSON Safety Manual Series DPS280 DVS280 ASCO

Summary

Monitor fluid and air levels with the DPS280/DVS280 digital switch series, designed for precise pressure and vacuum detection in industrial applications. This comprehensive manual provides technical guidance on installation, electrical wiring, and advanced operation, including setting Hysteresis or Window Comparator modes tailored to your process needs. Learn how to configure set points within specified operating ranges while utilizing integrated error codes and troubleshooting guides for reliable system maintenance by engineers and technicians.

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DPS280 / DVS280 Series

Do not use corrosive or flammable gases or liquid with this product. Please use within the rated pressure range. Do not apply pressure beyond recommended maximum pressure, permanent damage to the pressure sensor may occur. Do not drop, hit or allow excessive shock. Even if switch body appears undamaged, internal components may be broken and can cause malfunction. Turn power off before connecting wiring. Incorrect wiring or short circuit will damage and / or cause malfunction. Do not use in environment where steam or oil vapor is present. This product is not explosion-proof rated. Do not use in atmospheres containing flammable or explosive gases. Avoid wiring the sensor cable adjacent to or in the same cable tray with power or high voltage lines. Doing so could cause malfunction due to noise. This product is not a safety sensor. Its use is not intended to protect life and prevent bodily injury or property damage from dangerous parts or machinery. It is a normal object detection sensor.

DPS280 DVS280

SPECIFICATIONS

(PRESSURE) (VACUUM) 0 ~ 1000 k Pa 0.0 ~ - 101.3 k Pa

Rated pressure range

0 ~ 145 PSIG 0 ~ 29.9" Hg Vacuum -100 ~ 1000 k Pa 10.0 ~ - 101.3 k Pa

Operating / Set pressure range

- 14.5 PSIG ~ + 145 PSIG 1.45 PSIG ~ 29.9" Hg Vacuum

Maximum pressure 1500 k Pa 300 k Pa (Exceeding max pressure could damage switch) 217.5 PSIG 43.5 PSIG Fluid Air, Non-corrosive gases, incombustible gases

k Pa 0.1 kgf/cm2 0.01 0.001 Set pressure bar 0.01 0.001

resolution

psi 0.1 0.01 In Hg 0.1 mm Hg

Power supply voltage 12 to 24VDC ± 10 %, Ripple (P-P) 10 % or less Current consumption ≤ 45m A (with no load)

PNP open collector NPN open collector Max. load current: 125m A Max. load current: 125m A

Switch output Max. supply voltage: 24VDC Max. supply voltage: 30VDC

Residual voltage:  1.5V Residual voltage:  1.5V (load current 125m A) (load current 125m A)

Repeatability (Switch output) ≤ ± 0.2 % F.S. ± 1 digit Hysteresis mode

Adjustable

Window comparator mode

≤ 2.5ms (chatter-proof function: 24ms, 250ms, 500ms, 1000ms and

Response time

1500ms selections)

Output short circuit protection Yes 7 segment LCD display Two color (red/green) display (sampling rate: 5 times/1sec.) Indicator accuracy ≤ ± 2.0 % F.S. ± 1 digit (ambient temp: 77°F ± 5°F / 25°C ± 3°C) Switch ON Indicator Green OUT Indicator

Enclosure IP40

Operation: 0°F ~ 122°F / 0°C ~ 50°C, Storage: 14°F ~ 140°F / -10°C ~

Ambient temp. range 60°C

(no condensation or freezing)

Ambient humidity range Operation/Storage: 35 ~ 85% RH (no condensation)

Environment

Withstand voltage 1000VAC in 1-min (between case and lead wire) Insulation resistance 50Mohm min. (at 500 VDC, between case and lead wire)

Total amplitude 1.5mm, 10Hz-55Hz-10Hz scan for

Vibration

1 minute, two hours each direction of X,Y and Z

Shock 100m/s2 (10G), 3 times each in direction of X,Y and Z

≤ ± 2% F.S. of detected pressure (77°F / 25°C) at temp.

Temperature characteristic

Range of 0°F ~ 122°F / 0°C ~ 50°C

Port size 1/8 NPT Male x 10-32 UNF Female, 1/8 PT x M5, G 1/8 x M5 Lead wire Oil-resistant cable (0.15 mm2 )

Approx 45g - Switch only

Weight

Approx 90g - Switch with 2M mating cable

DPS280 / DVS280 Series

Page Summary Contents For EMERSON Safety Manual Series DPS280 DVS280 ASCO

Page 1 DPS280 / DVS280 Series Do not use corrosive or flammable gases or liquid with this product. Please use within the rated pressure range. Do not apply pressure beyond recommended maximum pressure, perma...
Page 2 OUTPUT CIRCUIT WIRINGHOW TO ORDER DPS 280P Q8 PNP output Electrical Connection DC (+)(Brown) Q8 = 8mm Pico Quick Connect DPS Digital Pressure Switch DVS Digital Vacuum Switch 4 Pin w/ 2M Mating Cable ...
Page 3 DIMENSIONS 7/16¨ HEX 1.18 (11.0) M3 x 0.5 THD 2 PLS 78.75¨ (2000 mm) M8 Female 4 Pin Mating Cable Supplied With Switch Mating Cable: Cable O.D. - 4.0mm Conductor Gauge - 26 AWG 1/8 NPT Male x 10-32 UN...
Page 4 SETTING STEPS Sensing Mode Initial Setting Pressure Setting Zero Calibration Sensing Mode Units P_1 or n_1 Calibrate switch to zero under Display Color P_2 or n_2 atmospheric conditions Operation Mode...
Page 5 PRESSURE SETTING MODES Select auto / manual setting mode during initial set-up. To enter pressure setting mode, momentarily press button from sensing mode. Manual Setting Mode Use when desired Pressur...
Page 6 ZERO CALIBRATION / THE MAX. & MIN. DISPLAY MODE Zero Calibration: Calibrate switch to zero under atmospheric conditions. Press the + buttons at the same time until the “00” is shown. Release the b...

Manual Details

Brand Emerson
Pages 6
File Size 1.10 MB
Published June 05, 2026
28 views

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Frequently Asked Questions

What are the operational limits for this switch?

DPS280/DVS280 operate over a pressure range of 0~1000 kPa and a vacuum range of 0.0~-101.3 kPa, with maximum ranges specified.

How do I prevent internal damage during setup?

Do not drop, hit or allow excessive shock. Also, always turn power off before connecting wiring to prevent malfunction.

What types of gases are safe to use with the product?

It is designed for Air and non-corrosive / incombustible gases.

How is repeatable accuracy determined by settings?

Hysteresis mode should be set greater than ±0.2% of FS repeatability to prevent digital output chatter.