Water Meters

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Liquid Measurement

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Gas Measurement & Control

LOCAL INSTANTANEOUS FLOWMETER OF-ZAF,OF-ZZF / LOCAL INTEGRATING FLOWMETER OF-ZAQ,OF-ZZQ

MICROSTREAM Flowmeter

Instantaneous Flow-Rate·Integrating Flow Volume Flowmeter

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 flowmeter
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 flowmeter OF-WN Type			OF05ZAWN	OF10ZAWN
Instantaneous flow-rate・ Integrating flow volume flowmeter (with pulse output) OF-WP Type			OF05ZAWP	OF10ZAWP
Flow-rate range (m³/h)	Fluid viscosity 0.3 ~ 0.8mPa·S		0.085 ~ 0.85L/min	0.7 ~ 5L/min
	0.8 ~ 2.0mPa·S		0.05 ~ 0.85L/min	0.35 ～ 5L/min
	2.0 ~ 5.0mPa·S		0.017 ~ 0.85L/min	0.17 ～ 5L/min
	5.0 ~ 200mPa·S		0.0085 ~ 0.85L/min	0.085 ~ 5L/min
Accuracy (*1)	Flow-rate indication		±2%RS±0.007L/min	±2% RS±0.04L/min
Accuracy (*1)	Volume indication		±2%RS
Measurable fluids	Various liquids		Please select with reference to the following major materials of the liquid-touching materials
Measurable fluids	Major fluids		Water, hot water, kerosene, heavy oil
Max. working pressure			0.5MPa (at the time of fluid temperature of 20°C)
Pressure drop			Not more than 4kPa	Not more than 10kPa
Fluid temperature range			0 ~ +60°C
Output signal (for OF-WP)			Open drain output (Equivalent to open collector) Pulse width: Not less than 5ms Max. rating voltage: 30 VDC 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 OF-WP)			10mL/p
Ambient temperature range			0 ~ +60°C 35 ~ 85%RH (Dew condensation must be avoided)
LCD	Flow-rate	Smallest Scale	0.007L/min	0.04L/min
	Flow-rate	Display digits	0.000L/min	00.00L/min
	Volume	Smallest Scale	0.001L	0.01L
	Volume	Display digits	00000.000L	000000.00L
Power supply			Built-in lithium battery (Battery life 4 years. Not replaceable.)
Structure			IP64 equivalent, Indoor installation
Connection			R1/4	R1/2
Meter Weight			Approx. 240g	Approx. 260g
Major materials of the liquid touching parts		Casing	PPS
		Rotor	PPS
		O-ring	NBR
		Pivot	SUS304

Instantaneous flow-rate・ Integrating flow volume flowmeter OF-WN Type			OF05ZZWN	OF10ZZWN
Instantaneous flow-rate・ Integrating flow volume flowmeter (with pulse output) OF-WP Type			OF05ZZWP	OF10ZZWP
Flow-rate range (m³/h)	Fluid viscosity 0.3 ~ 0.8mPa·S		0.085 ~ 0.85L/min	0.7 ~ 5L/min
	0.8 ~ 2.0mPa·S		0.05 ~ 0.85L/min	0.35 ~ 5L/min
	2.0 ~ 5.0mPa·S		0.017 ~ 0.85L/min	0.17 ~ 5L/min
	5.0 ~ 200mPa·S		0.0085 ~ 0.85L/min	0.085 ~ 5L/min
Accuracy (*1)	Flow-rate indication		±2%RS±0.007L/min	±2% RS±0.04L/min
Accuracy (*1)	Volume indication		±2%RS
Measurable fluids	Various liquids		Please select with reference to the following major materials of the liquid-touching materials
Measurable fluids	Major fluids		Water, hot water, kerosene, heavy oil
Max. working pressure			0.5MPa (at the time of fluid temperature of 20°C)
Pressure drop			Not more than 4kPa	Not more than 10kPa
Fluid temperature range			0 ~ +60°C
Output signal (for OF-WP)			Open drain output (Equivalent to open collector) Pulse width: Not less than 5ms Max. rating voltage: 30 VDC 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 OF-WP)			10mL/p
Ambient temperature range			0 ~ +60°C 35 ~ 85%RH (Dew condensation must be avoided)
LCD	Flow-rate	Smallest Scale	0.007L/min	0.04L/min
	Flow-rate	Display digits	0.000L/min	00.00L/min
	Volume	Smallest Scale	0.001L	0.01L
	Volume	Display digits	00000.000L	000000.00L
Power supply			Built-in lithium battery (Battery life 4 years. Not replaceable.)
Structure			IP64 equivalent, Indoor installation
Connection			R1/4	R1/2
Meter Weight			Approx. 240g	Approx. 260g
Major materials of the liquid touching parts		Casing	PPS
		Rotor	PPS
		O-ring	FKM
		Pivot	SiC

In case there is possibility that any particle is flown in the liquid to be measured, please install a filter of not less than 80 meshes at the inlet side of the flowmeter.
Gasoline, Sodium hydroxide (Caustic soda), Hydrogen peroxide solution (Oxydol), and Hydrochloric acid are not applicable.
*1: With the standard installation position.

External dimensions

Model	OF05	OF10
A(mm)	80	90
B(mm)	8	8.5
C(mm)	25	24

Standard installation position

Materials - Abbreviations

PPS	Polyphenylene Sulfide Resin
NBR	Acrylonitrile-Butadiene Rubber
SUS304	Stainless Steel 304
FKM	Fluoro Rubber
SiC	Silicon Carbide Ceramic

Specifications are subject to change without notice.

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MICROSTREAM Flowmeter

Instantaneous Flow-Rate·Integrating Flow Volume Flowmeter

Model OF-WN (Local display type) Model OF-WP (With pulse output)

Features

Specifications

External dimensions

Standard installation position

Materials - Abbreviations

Model OF-WN (Local display type)
Model OF-WP (With pulse output)