Introduction
Kofloc 8500 Series Mass Flow Meter/meter driven by 24VDC power supply has been developed as a successor of the MODEL 8300. The viewpoint change function of the display unit and the pattern setting function are unique to this model, and noise resistance has been improved dramatically. A sister model with a detachable display and setting unit is also available.
- The high-lift actuator allows this compact model to control a large flow rate.
- Equipped with a display and setting unit, this model can be operated by the 24VDC power supply.
- The RS232C/RS485 communication function and integration function are provided as standard equipment.
- The 14-bit converter permits to display and operation in 4-1/2 digits.
- Control of the flow rate of inflammable gas is possible because the heat generating part of the sensor is not exposed to the gas.
- There are no limitations to the mounting position that may be employed.
- In addition to the SV setting, five other patterns can be set.
- Auto zero and auto close functions are also standard.
Kofloc 8500 Series Specification
| ITEM | 8500MC/MM | 8550MC/MM |
| Flow range | 10SCCM?20SLM | 30SLM 100SLM |
| N2 equivalent20/1ATM | freely selectable | freely selectable |
| Sensor type | Thermal sensor | |
| Valve type 1 | Normally closed proportional solenoid valve | |
| Control range 1 | 2100 F.S. | 5100 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./1535 | ±0.2F.S./1535 |
| Repeatability | ±0.5%F.S. | |
| Operating differential pressure 1 | F.S.5SLM 50 300kPa G | F.S.50SLM15 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 | 1×108Pa/sexcluding permeation of He | |
| Allowable operating temperature | 545 | |
| Allowable operating humidity | 10 90 RH No condensation allowed | |
| Materials of the gas contact part | Body: SUS316 | |
| Valve seat :FKM option: CR or NBR | ||
| Sealing :FKM option: CR or NBR | ||
| Electrical connection | Dsub half-pitch 20pin DX10M20S(HRS) | |
| Flow rate setting signal | 05VDCinput impedance 100k or more) | |
| 1 | or 420mA selectable | |
| Flow rate output signal | 05VDC external load resistance 250k or more or | |
| 4?20mA external load resistance 300 or less selectable | ||
| Communication | RS232C3 wire Or RS4853 wire selectable | |
| Other functions | Instantaneous flow rate integrated flow rate display 7-segment 4-digit LED | |
| display accuracy ±1%integrated display 00009999MAX | ||
| Alarm output NPN open collector output 2 points | ||
| Max DC35V50mA, pattern setting 5 pattern function | ||
| Required power supply | 24VDC±10% ripple 5% current consumption 300mA max | |
| Joint | Standard 1/4F9009/16-18UNF | 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 |
(*1)Only for the mass flow controller.
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