Your Most Reliable Factory Automation Channel


Micro-differential Pressure High-precision Digital Pressure Sensor DP-M

High accuracy & resolution

CE Approved
CE : EMC Directive

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High accuracy and resolution

High accuracy and resolution

Due to differential pressure sensing, the pressure can be set with a high resolution of 0.01 kPa.D {1 mmH2O.D} over a pressure range of 0 to 2.00 kPa.D {0 to 204 mmH2O.D} and, moreover, the detection accuracy is within ±1 % F.S.

<Detecting clogging of filter>
The clogging of a filter can be reliably detected by the differential pressure, indicating the time for filter replacement.


Bright display and easy key operation

Three bright red 7-segment LEDs, 12 mm 0.472 in high, are incorporated in the compact body. They can be clearly read not only in a dark place, but also, in a welllit place. Further, initialization or pressure settings can be easily done with key operation while looking at the display.


Versatile control with two output modes

(1) Hysteresis mode
The lower threshold value and the upper threshold value establish the hysteresis of the comparative output.
(2) Window comparator mode The comparative outputs can be made ON or OFF by a pressure within the limits set by the upper and the lower threshold levels.


Pressure unit selectable

The pressure unit can be selected from “kPa” and “mmH2O” according to your requirement. Further, during measurement, the pressure unit can be recognized at a glance from the pressure unit indicator.
Pressure unit selectable

(When the pressure unit is changed, threshold values and the measured pressure value are automatically converted.)


Analog current output type [DP-M2A]

DP-M2A is incorporated also with the analog current output (4 to 20 mA). Hence, it is ideally suited for real time monitoring and multi-point control in combination with an analog controller (ultra-compact digital panel controller CA2 series).


Type Standard type With analog current output type
Model No. DP-M2 DP-M2A
Type of pressure Differential pressure
Rated pressure range 0 to 2.00 kPa.D {0 to 204 mmH2O.D}
Set pressure range 0 to 2.00 kPa.D {0 to 204 mmH2O.D}
Set pressure resolution 0.01 kPa.D {1 mmH2O.D}
Pressure withstandability 6 kPa.D {612 mmH2O.D}
Applicable fluid Non-corrosive gas
Selectable units kPa, mmH2O
Supply voltage 12 to 24 V DC +10/-15% Ripple P-P 10 % or less
Current consumption 50 mA or less 75 mA or less
Comparative output NPN open-collector transistor
・Maximum sink current: 100 mA
・Applied voltage: 30 V DC or less (between comparative output and 0 V)
・Residual voltage: 1 V or less (at 100 mA sink current)
0.4 V or less (at 16 mA sink current)
  Utilization category DC-12 or DC-13
Output operation Selectable either normally open (NO) or normally closed (NC) by the key
Hysteresis 0.01 kPa.D {1 mmH2O.D}
Repeatability Within ±1 % F.S.
Response time 10 ms or less
Short-circuit protection Incorporated
Analog current output Output current: 4 to 20 mA (from 0 to 1.96 kPa.D {0 to 200 mmH2O.D})
Zero-point: within 4 mA ± 1 % F.S.
Span: within 16 mA ± 3 % F.S.
Linearity: within ±1 % F.S.
Load resistance: 0 to 250 Ω
Display 3 digit red LED display (Sampling rate: 4 times/sec. approx.)
  Displayable pressure range -0.05 to 2.10 kPa.D {-5 to 210 mmH2O.D}
Indicators Operation Orange LED (lights up when the comparative output is ON)
Pressure unit Red LED (The indicator corresponding to the selected unit lights up during the sensing mode.)
M1 setting Red LED (blinks in the M1 setting mode)
M2 setting Red LED (blinks in the M2 setting mode)
Pollution degree 3 (Industrial environment)
Ambient temperature 0 to +50 ℃ +32 to +122 ℉ (No dew condensation), 
Storage: -10 to +60 ℃ +14 to +140 ℉
Ambient humidity 35 to 85 % RH, Storage: 35 to 85 % RH
EMC EN 61000-6-2, EN 61000-6-4
Voltage withstandability 1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance 50 MΩ, or more, with 500 V DC megger between all supply terminals connected together and enclosure
Vibration resistance 10 to 150 Hz frequency, 0.75 mm 0.030 in amplitude in X, Y and Z directions for two hours each
Shock resistance 100 m/s2 acceleration (10 G approx.) in X, Y and Z directions for three times each
Temperature characteristics Over ambient temperature range 0 to +50 ℃ +32 to +122 ℉
: within ±3 % F.S. of detected pressure at +25 ℃ +77 ℉
Pressure port ø4.6 mm ø0.181 in resin pipe
Material Front case: ABS, Rear case: ABS, LED display: Acrylic, Pressure port: PA
Cable 0.18 mm2 3-core oil resistant cabtyre cable, 2 m 6.562 ft long 0.18 mm2 4-core oil resistant cabtyre cable, 2 m 6.562 ft long
Cable extension Extension up to total 100 m 328.084 ft (less than 10 m 32.808 ft when conforming to CE marking) is possible with 0.3 mm2, or more, cable.
Weight Net weight: 75 g approx., Gross weight: 135 g approx


  1. For production before April 2015 : ø4.8 mm ø0.189 in
  2. Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +20 ℃ +68 ℉.