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TVOC Fixed

TVOCTVOC is the first fixed ATEX approved photoionisation detector (PID) for the continuous detection and measurement of total volatile organic compounds (VOCs). With an intelligent 4-20 mA analogue output, TVOC can be simply integrated into a DCS control system to give warning or control of high VOC levels in the working environment. Designed for simple installation, service and calibration, TVOC is ideal for use in manufacturing and process industries where VOCs are typically present.

TVOC utilises a diffusive sample technique resulting in less contamination issues compared to pumped systems, reducing lamp cleaning and servicing requirements. Simple to install, service and calibrate, TVOC requires no hot work permit and the PID sensor is accessible and changeable in a matter of seconds.

 

 

 

KEY FEATURES

  • Patented Fence Electrode Technology for high sensitivity, humidity and contamination resistant operation
  • Intrinsically Safe for use in hazardous areas - no need for explosion proof enclosure
  • Selectable detection range of 0–10 ppm, 0–100 ppm or 0–1000 ppm
  • Diffusive monitoring - no pump required
  • Scaled 4-20 mA analogue output
  • Operates at 5 to 28 V
  • - 20 to 50°C operating temperature
  • LED and 4-20 mA output fault indication
  • Includes a 10.6 eV lamp
  • Digital numerical display
  • Easy access PID sensor allows simple servicing
  • Simple calibration procedure

 

APPLICATIONS

  • Manufacturing
  • Processing
  • Refineries and petrochemical
  • Offshore
  • Chemical
  • Waste water treatment
  • Pharmaceutical
  • Indoor air quality
  • Pulp and paper
  • Solvent recovery systems
  • Industrial painting and coating

 

SPECIFICATIONS

Sensor (PID)
 10.6 eV lamp with Ion Science patented Fence Electrode technology
Intrinsically Safe Approvals II 2 G Baseefa 03ATEX0742 EEx ia II T4 (-20°C < Ta < 60°C)
IECEx BAS 04.0033 (world standard)
Ingress Protection Rating IP65 - dependent on cable glands fitted Sensor - IP54
Power 5-28 VDC Max 65 mA
Output
 4-20 mA (requires a 8-35 VDC power supply)
For IS requirements 8-30 VDC power supply
Range 0.1-100 ppm 1-1,000 ppm User selectable
Sampling Diffusion (can be pumped if required using an adaptor)
Display 7 segment, 4 digit LCD, 4 color LEDs
Response
 Sensor - T90 < 5 sec.  Detector - 1 minute as standard
Accuracy 0-100 ppm ≤ 2% 100 - 1,000 ≤ 5%
Linearity 0-100 ppm > 98%
Calibration Magnetically accessed 100 ppm Isobutylene via calibration kit accessory
Temperature Operating: -20 to 50°C (-4 - 122°F) Humidity: 0-95% RH (non- condensing)
Dimensions 120 x 160 x 70 mm (4.7 x 6.3 x 2.8”)
Weight Instrument: 1.3 kg (2.9 lb)
Packed: 1.47 kg (3.2 lb)

 

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