PID Analyzers, LLC.

PID Analyzers, LLC.


- Model 201-Cplus - Continuous Monitor for VOC`s, Inorganic & Fixed Gases



The Model 201C is a continuous VOC Analyzer designed for continuous or process control. It has optional 4-20 mA output, RS485, MODBUS, 2-4 programmable setpoints, larger pump, bypass flow & and a 19” rack or industrial wall mount NEMA 4 enclosure. This 201C has the choice of one 9.5 or 10.6 eV lamp in a PID or an FID, Operator's Manual, configuration software and RS232 cable. The detectors are the PID or FID.

  • Species measured: Organics (VOCs by PID or FID) and inorganic species that can be ionized by the PID lamp (9.5, 10.6 or 11.7 eV)
  • Sensor(s): Sensor(s): single- PID only or FID only
  • Precision: +/- 1-2% of reading
  • Response time: <2 sec. (PID) < 10s FID (to 90%) response
  • Sample flow rate: > 1 LPM
  • Span Drift: <2% over 24 hours
  • Range: 0.1 to 6,000 ppm (optional ppb range)- PID 1 to 40,000 ppm FID
  • Linear Range: See above
  • Power consumption:< 50 watts maximum; 115 VAC, 0.4 amps
  • Dimensions: 19'' Rack mount - 19'' W x 5 1/4''H x 14''D Wall - 2''W x 21''H x 10''D
  • Weight: 19'' Rack mount - 12.2 pounds PID; 14 pounds FID, Wall - 19 pounds PID; 22 pounds FID
  • Instrument operating conditions: : 5-40 degrees C, 0-95% RH (non-condensing)
  • Performance: Isobutylene Referred

  • PID Lamps : Our 9.5 and 10.6 eV lamps remain the best in the business since we developed them over 30 years ago.
  • FID : Our very sensitive FID has flame out sensor that will shut off the hydrogen if the flame goes out
  • Enclosures : 19'' rack mount or NEMA 4 wall mount.
  • Programmable setpoints : The 1-3 setpoints (depends on the options) can be programmed for PID control, above/below setpoints
  • Display : Our 2 line by 16 character LED display is easy to read. The lower display is used for diagnostics.   
  • ADC : Our 16 bit ADC provides a resolution of 1 part in 64,000 and our signal algorithm minimizes noise by signal averaging in the msec range.
  • Programmable Voltage/current output : 1VDC/4-20 mA.
  • Digital outputs : RS485, MODBUS
  • Ease of calibration- SemiAutomatic or Remote Automatic : The two point calibration for the PID uses an electronic zero (no zero gas needed) and a span gas. It is initiated by a push button switch. The time to calibrate is about 1 minute. The FID requires zero air and span gas for calibration. In the 201, the valving is built into the Analyzer. The remote calibration can be activated by a PLC controlled contact closure.

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