MET ONE R4800/R4900
Remote Air Particle Counter | MET ONE R4800 and R4900
Easy to integrate with any facility monitoring system
MET ONE R4800 series remote air particle counters use standard RS-485 serial communications MET ONE R4900 series remote air particle counters use industry standard 4-20mA interface
Flexible for all your remote air particle counter applications
Sensitivity ranges from 0.3um to 0.5um and flow rates ranging from 0.1cfm to 1.0cfm Onboard LED status indicator that flashes and sets a signal at the connector for alarm Stay resident RS-485 configuration programming (count time, hold time, alarm level, alarm delay and scaling) is maintained through power cycles (power on/off)
Easy installation options
The small stainless steel enclosure is compatible with most process environments. There is no fan to disturb airflows, allowing the MET ONE R4800/R4900 series counters to be placed close to sensitive process areas.
| Minimum threshold Setting | R4803 / R4903 - 0.3um R4805 / R4815/ R4905 / R4915 - 0.5um |
| Flow Rate | R4803 / R4805 / R4903 / R4905 - 0.1 CFM (2.83 LPM) R4815 / R4915 - 1.0 CFM (28.3 LPM) |
| Flow Control | Critical orifice; requires 18” Hg vacuum, minimum 450 mbar |
| Size Channels (μm) | R4803 / R4903 - Ch 1 / Ch2 - 0.3 / 0.5 R4805 / R4815 / R4905 / R4915 - Ch 1 / Ch2 - 0.5 / 5.0 |
| Light Source | Laser diode (10-year MttF) |
| Coincidence Loss | 5% at 2,000,000 particles/ft3 |
| Inlet Pressure | Ambient to 0.1” Hg vacuum |
| Indicators | Power LED illuminates when counter is powered; Calibration/Alarms LED illuminates when sensor calibration needs checking and flashes when the count exceeds the alarm level. |
| Power | Open collector Fet maximum sink current (on) 150 mA; Maximum VC voltage (off) 30 VDC |
| Connector | DB-15 (female) |
| Weight | 0.3 kg (10.7 oz) |
| Tubing Connections | Inlet, 0.1 CFM, 1/8” I.D. Inlet, 1.0 CFM, 1/4” I.D. Outlet, All (vacuum), 1/4” I.D. |
| Environment | Operating - 12to 41C (55 to 105F) 20 to 95% relative humidity, non-condensing Storage - -40 to 70C (-40 to 160F) up to 98% relative humidity, non-condensing |
| When ordering, specify | 0.3 µm (R4803/R4903) or 0.5 µm (R4805/R4815/R4905/R4915) AND 0.1 cfm (R4803/R4805/R4903/R4905) or 1.0 cfm (R4815/R4915) |
Included Accessories
| Part Number | Description |
|---|---|
| 500052 | Isokinetic probe; DB-15 Connector |
| 701113 | Operators Manual R4800 |
| 701130 | Operators Manual R4900 |
Optional Accessories
| Part Number | Description |
|---|---|
| 2080442 | Purge Filter Assembly, 0.2µ , 0.1 cfm (R4803 / R4805 / R4903 / R4905) |
| 2080443 | Purge Filter Assembly, 0.2µ , 1.0 cfm (R4815/R4915) |
| 2082270-1 | Power Supply, 110 VAC input, 12 vdc output supports up to 32 model R4800 counters |
| 2082270-2 | Power Supply, 230 VAC input, 12 vdc output supports up to 32 model R4800 counters |
| 2081524-11 | Wall Plate, R4800/R4900 Series |
