Micro-differential Pressure High-precision Digital Pressure Sensor [For Gas] DP-M (Discontinued Products)

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Discontinued Products

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Specifications

Type		Standard type	With analog current output type
Model No.		DP-M2	DP-M2A
CE marking directive compliance		EMC Directive, RoHS Directive
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 allowed), Storage: -10 to +60 ℃ +14 to +140 ℉
Ambient humidity		35 to 85 % RH, Storage: 35 to 85 % RH
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 double 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 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 (Note 1)
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

Notes:

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 ℉.

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Mounting

The displayed value may vary by 1 digit (0.01 kPa.D {1 mmH2O.D}) maximum depending on whether the sensor is installed vertically or horizontally.
A sensor mounting bracket MS-PE-1 (optional) may be used. When mounting the sensor with the sensor mounting bracket, the tightening torque should be 0.5 N·m or less.

Conditions in use for CE conformity

Conditions

The DP-M series is a CE conformity product complying with EMC Directive. The harmonized standard with regard to immunity that applies to this product is EN 61000-6-2 and the following condition must be met to conform to that standard.

Operation

If setting is impossible even with pressing the MODE key, verify whether the key-protect function is enabled. Please note that pressing down on the MODE key for an extended moment (for 4 sec. or more) will enable the key-protect function as soon as the key is released. The key-protect function is set when the display shows [ON] and is released when the display shows [OFF].
If using the window comparator mode, lower threshold value (M1) and upper threshold value (M2) should be set with a difference of 3 digits (0.03 kPa.D {3 mmH2O.D}) or more. No output will be possible with a 0 to 2 digits difference.

Piping

Apply higher pressure to the Hi-port and lower pressure to the Lo-port.

Recommended tube

Use flexible tubes (silicone tube etc.) that can fit the pressure ports, ø4.6 mm ø0.181 in in diameter. The tubes should cover more than half the length of the pressure ports.

Notes:

1)TYGON is registered trademarks of Saint-Gobain K. K.

2)Ensure that excessive pressure is not applied to the pressure ports. Since this sensor is designed for detecting small pressures, if excessive pressure or shock is applied to the pressure ports, the diaphragm (pressure sensing device) in the sensor may get damaged.

3)Please do not compress the tube. If the tube is compressed, pressure exceeding the rated value may be generated, damaging the diaphragm (pressure sensing device).

Wiring

The analog current output of DP-M2A does not incorporate a short-circuit protection circuit. Do not connect it directly to a power supply or a capacitive load.

Functional description

	Description	Function
(1)	3 digit LED display (Red)	The measured differential pressure level, setting values, error codes, and key protection sign are displayed.
(2)	M1 setting indicator (Red)	Blinks in the lower threshold value (M1) setting mode.
(3)	M2 setting indicator (Red)	Blinks in the upper threshold value (M2) setting mode.
(4)	Operation indicator (Orange)	Lights up when the comparative output is ON.
(5)	Pressure unit indicator (mmH2O, kPa) (Red)	・ The indicator of the selected unit lights up during the sensing mode. ・ Both indicators light off during the initial setting mode and during an error occurrence. ・ The indicator of the selected unit blinks during the upper and lower threshold value setting mode.
(6)	Increment key	・ The settable digit is shifted cyclically at every press of the key during the initial setting mode. ・ Pressing the key increases the set value, in the upper and lower threshold value setting mode.	During the sensing mode, pressing both switches calibrates the sensor into atmospheric zero.
(7)	Decrement key	・ The set condition changes at every press of the key during the initial setting mode. ・ Pressing the key decreases the set value, in the upper and lower threshold value setting mode.
(8)	Mode selection key	・ Three modes, the sensing mode, the lower threshold value (M1) setting mode, and the upper threshold value (M2) setting mode, are cyclically selected at every press of the key. ・ During the sensing mode, pressing the key for 4 sec., or more, can make the key protection either effective or ineffective. ・ Holding the increment key and simultaneously pressing the mode selection key brings the sensor from the sensing mode to the initial setting mode.
(9)	Pressure Lo-port	Lower pressure should be applied.
(10)	Pressure Hi-port	Higher pressure should be applied.

Output mode and output operation

Hysteresis mode (H) (M1 < M2)

The lower threshold value and the upper threshold value establish the hysteresis of the comparative output.

Window comparator mode (C) (M1 < M2)

The comparative outputs can be made ON or OFF by a pressure within the limits set by the upper and the lower threshold levels.

・

When operating in window comparator mode (C) lower threshold value (M1) and upper threshold value (M2) should be set with a difference of 3 digits (0.03 kPa.D {3 mmH2O.D}) or more.

Others

Use within the rated pressure range.
Do not apply pressure exceeding the pressure withstandability value. The diaphragm will get damaged and correct operation shall not be maintained.
Do not use during the initial transient time (0.5 sec.) after the power supply is switched on.
Do not insert wires, etc., into the pressure port. The diaphragm will get damaged and correct operation shall not be maintained.
Do not operate the keys with pointed or sharp objects.

Micro-differential Pressure High-precision Digital Pressure Sensor [For Gas] DP-M (Discontinued Products)

Discontinued Products

Specifications

Dimensions

DP-M□

MS-PE-1

MS-PE-2 MS-PE-3

I/O Circuit and Wiring diagrams

I/O circuit diagram

Wiring diagram