DRIP METER - MICRO STREAM FLOW METER

Instantaneous Flow-Rate Integrating Flow Volume Flow meter
Model: OF-WN (Local display type)
Model: OF-WP (With pulse output)

Features

• Built-in lithium batteries (No external power supply is required)
• Indications of both instantaneous flow-rate and integrating flow volume by only 1 flow meter
• Revolving display unit (It can be fixed to a easy-to-read position)
• Simplified structure with the oval gears type measuring principle
• Measurement of various liquids
• Reset function for indications of Integrating Flow Volume (Total) and Integrating Flow Volume (Trip)
• Value holding function for Instantaneous Flow-Rate indication
• Pulse output function (Option)
  

 

Specifications

Instantaneous flow-rate· Integrating flow volume flow meter NW Type			NW05-NTN	NW05-PTN	NW05-TTN	NW10-NTN
Instantaneous flow-rate· Integrating flow volume flow meter (with pulse output) NW-P Type			NW05-NTP	NW05-PTP	NW05-TTP	NW10-NTP
Flow-rate range (m3/h)			0.3 – 3L/min			1.5 – 20L/min
Accuracy	Flow-rate indication		±2%RS±0.05L/min			±2% RS±0.2L/min
	Volume indication		±2%RS (with the standard installation position)
Measurable fluids			Various liquids (Please select with reference to the following major materials of the liquid-touching materials)
Max. Working Pressure			1MPa (at the time of fluid temperature of 20°C)
Pressure Drop			Not more than 12kPa (At the time of 3L/min)			Not more than 20kPa (At the time of 20L/min)
Fluid viscosity range			0.5-1.5mPa・s
Fluid temperature range			0±60°C
Ambient temperature range			0±60°C 35-85%RH(Dew condensation must be avoided)
Output signal (for NW-P)			Open drain output (Equivalent to open collector) Pulse width: Not less than 5ms Max. rating voltage: 30VDC Output capacity: “ON resistance” Not more than 150Ω, “OFFresistance” Not less than 100kΩ (Remained voltage not more than 1.5V in case of input current not more than 10mA)
Pulse unit (for NW-P)			10mL/p			1L/p
LCD	Flow-rate	Smallest Scale	0.05L/min			0.2L/min
		Display digits	00.00L/min			000.0L/min
	Volume	Display digits	000000.00L			0000000.0L
Power supply			Built-in lithium battery (Battery life 4 years. Not replaceable.)
Measurable fluids			Refer to "MEASURABLE FLUID AND PARTS MATERIALS"
Structure			IP64 equivalent, Indoor installation
Connection			R1/2
Meter Weight			Approx. 280g			Approx. 250g
Major materials of the liquid touching parts		Casing	Denatured PPO	PP	ETFE	Denatured PPO
		Vane wheel	POM		ETFE	POM
		Pivot	SUS304	PA	ETFE	SUS304
		O-ring	NBR	FKM		NBR
		Magnet	Sa-Co *1			Ba-Fe

Instantaneous flow-rate· Integrating flow volume flow meter NW Type			NW10-PTN	NW10-TTN	NW20-NTN	NW20-PTN
Instantaneous flow-rate· Integrating flow volume flow meter (with pulse output) NW-P Type			NW10-PTP	NW10-TTP	NW20-NTP	NW20-PTP
Flow-rate range (m3/h)			1.5-20L/min	1.0-10L/min	3.0-60L/min
Accuracy	Flow-rate indication		±2%RS±0.2L/min		±2% RS±0.5L/min
	Volume indication		±%RS (with the standard installation position)
Measurable fluids			Various liquids (Please select with reference to the following major materials of the liquid-touching materials)
Max. Working Pressure			1MPa (at the time of fluid temperature of 20°C)
Pressure Drop			Not more than 20kPa (At the time of 20L/min)	Not more than 15kPa (At the time of 10L/min)	Not more than 60kPa (At the time of 60L/min)
Fluid viscosity range			0.5-1.5mPa·s
Fluid temperature range			0±60°C
Ambient temperature range			0±60°C 35-85%RH(Dew condensation must be avoided)
Output signal (for NW-P)			Open drain output (Equivalent to open collector) Pulse width: Not less than 5ms Max. rating voltage: 30VDC Output capacity: “ON resistance” Not more than 150Ω, “OFF resistance” Not less than 100kΩ (Remained voltage not more than 1.5V in case of input current not more than 10mA)
Pulse unit (for NW-P)			1L/p
LCD	Flow-rate	Smallest Scale	0.2L/min		0.5L/min
		Display digits	000.0L/min
	Volume	Display digits	0000000.0L
Power supply			Built-in lithium battery (Battery life 4 years. Not replaceable.)
Measurable fluids			Refer to "MEASURABLE FLUID AND PARTS MATERIALS"
Structure			IP64 equivalent, Indoor installation
Connection			R1/2		R3/4
Meter Weight			Approx. 250g			Approx. 500g
Major materials of the liquid touching parts		Casing	PP	ETFE	Denatured PPO	PP
		Vane wheel	POM	ETFE	POM
		Pivot	SUS304	ETFE	SUS304
		O-ring	FKM		NBR	FKM
		Magnet	Ba-Fe	Sa-Co *1	Ba-Fe

External dimensions

Mode NW05 NW10 NW20 A(mm) 80 80 110 B(mm) 87 87 105.5 C(mm) 52 52 74 D(mm) 11 11 16 E(mm) 25 25 35.5

Standard installation position

The standard installation position is that the display is facing upwards.

* The display is able to be revolved.

Materials -Abbreviations

Denatured PPO	Denatured Polyphenylene oxide
PP	Polypropylene
ETFE	Ethylene-tetrafiuoro ethylene
POM	Polyacetal or Polyoxymethylene
SUS304	Stainless steel 304
PA	Polyamide
NBR	Acrylonitrile-Butadiene Rubber
FKM	Fluoro Rubber
Sa-Co	Samarium-Cobalt
Ba-Fe	Barium-ferrite

Specifications are subject to change without notice.