Kofloc 8500MM Series Mass Flowmeter this mass ﬂow controller/meter driven by a 24 VDC power supply has been developed as a successor to the MODEL8300. The viewpoint change function of the display unit and the pattern setting function is unique to this model, and noise resistance has been improved dramatically. A sister model with a detachable display and setting unit is also available.

A mass flow meter with an integrated display that can directly read the flow rate. It operates only with a single 24V DC power supply and can be installed in any orientation. It can be driven by AC100V by using an AC power adapter (sold separately). Since the heat-generating part of the sensor and the fluid are not in contact, it also supports the flow rate measurement of flammable gas. Various event outputs such as power supply, flow rate signal (analog), and digital communication (RS485 / 232C) can be connected with the optional free cable.

Features

The high-lift actuator allows this compact model to control a large ﬂ ow rate.
Equipped with a display and setting unit, this model can be op-erated by a 24 VDC power supply
The RS232C/RS485 communication function and integration function are provided as standard equipment.
The 14-bit converter permits display and operation in 4-1/2 dig-its.
Control of the ﬂ ow rate of inﬂ ammable gas is possible, because the heat generating part of the sensor is not exposed to gas.
There are no limitations on the mounting position that may be employed.
In addition to SV setting, ﬁ ve other patterns can be set.
Auto zero and auto close functions are also standard.

Applications

Air sampling
Analyzer component
Bioreactor
Biotechnological process
Burn control
CCFL manufacturing
Chamber pressure control
Chemical process
Environment monitoring
Electronic device manufacturing
Food production
Fuel cell testing
Fermentation process
Gas blending
Gas distribution
Gas flow monitoring
Gas generation
Industrial furnace
Leak testing
Pharmaceutical process
Pollution monitoring
Process flow control
R&D
Solar power element manufacturing

Specifications

MODEL	8500MC/MM	8550MC/MM
Flow range	10SCCM〜20SLM	30SLM〜100SLM
（N2 equivalent　20℃/1ATM）	（freely selectable）	（freely selectable）
Sensor type	Thermal sensor
Valve type（*1）	Normally closed proportional solenoid valve
Control range（*1）	2〜100％（F.S.）	5〜100％（F.S.）
Response（*1）	≤2sec	≤3sec
	(within±2%F.S)	(within±2%F.S.)
Accuracy	±1.0%F.S.（25℃）	±1.5%F.S.（25℃）
Temperature coefficient	±0.1F.S./℃（15〜35℃）	±0.2F.S./℃（15〜35℃）
Repeatability	±0.5%F.S.
Operating differential pressure （*1）	F.S.≤5SLM　50〜300kPa（G）	F.S.≤50SLM　150〜300kPa（G）
	F.S.＞5SLM　100〜300kPa（G）	F.S.＞50SLM　200〜300kPa（G）
	Option：Medium differential pressure（MP）, low differential pressure（LP） specifications are available
Allowable operating pressure（*1）	500kPa（G） or less
Proof pressure	980kPa（G）
Leak rate	≤1×10−8Pa・㎥/s（excluding permeation of He）
Allowable operating temperature	5〜45℃
Allowable operating humidity	10〜90％RH（No condensation allowed）
Materials of gas contact part	Body : SUS316
	Valve seat :　FKM（option : CR or NBR）
	Sealing :　FKM（option : CR or NBR）
Electrical connection	Dsub half pitch 20pin　DX10M−20S(HRS)
Flow rate setting signal	0〜5VDC（input impedance 100kΩ or more)
（*1）	or 4〜20mA　selectable
Flow rate output signal	0〜5VDC（external load resistance 250kΩ or more） or
	4〜20mA　（external load resistance 300Ω or less）selectable
Communication	RS232C（3 wire）or RS485（3 wire）　selectable
Other functions	Instantaneous flow rate・integrated flow rate display （ 7-segment 4-digit LED
	display accuracy ±1%　integrated display 0000〜9999MAX）,
	Alarm output（NPN open collector output 2 points
	Max DC35V　50mA）, pattern setting（5 pattern） function
Required power supply	24VDC±10%（ripple 5%） current consumption 300mA max
Joint	Standard　1/4F900（9/16-18UNF）	Standard　3/8F900（9/16−18UNF）
（Main unit bore）	Option 1/8F900, 1/4UJR,	Option 1/2F900, 3/8UJR,
	Rc1/4 etc.	Rc3/8 etc.
Weight	Approx. 1200g	Approx. 1500g