J.U.M. Engineering GmbH

- Model VE572 - Sequencing 2-Channel, Heated Total Hydrocarbon Analyzer

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The HFID Model VE572 is a reliable and rugged Dual Channel Sequencing heated total hydrocarbon analyzer for low drift, high accuracy, sensitivity and stability. It uses our time proven hydrogen flame ionization detector (FID) in a heated oven to prevent the loss of high molecular weight hydrocarbons and to provide reliable performance in the analysis of high concentrations down to trace levels of THC -contaminants in high purity gases, air and other gases. All sample wetted components are integrated into the heated chamber. The two permanent heated sample filters are designed to be fully regenerated by back purging with compressed air or nitrogen. With only a few seconds needed for back purging, this technique allows uninterrupted measurements during cleaning of the sample filter while not in the sample mode. During back purging the sample filter, the sample line is also cleaned. The use of a stack probe filter is not necessary.

The combustion air supply for the detector is built in. No expensive zero gas generator or external cylinder for synthetic air is needed. Automated sample sequencing and back purging of the sample filter can be done with one of our optional timing controllers.

  • All components in contact with sample are fully heated and controlled at 190 degC
  • Built-In sample pressure and sample pumps
  • Built-in combustion air supply, no extra burner air bottle needed
  • Maintenance free sample filter backpurge system allows both filters to be cleaned without dismantling (automatic purge optional)
  • Permanent heated 2 micron stainless steel mesh filter
  • 'Overflow' calibration system for pressure less zero/span calibration
  • Automatic flame out control with alarm. An automatic fuel shut off valve is optional
  • Fast response less than 1 second
  • Low fuel consumption and very selective
  • Microprocessor PID-type temperature controller
  • Cold spot free coupling of the heated sample lines inside the heated oven optional
  • Remote control for sample, zero/span and backpurge is standard
  • Automatic or remote range change optional

  • EPA Method 25A compliance monitoring of source hydrocarbons (inlet and outlet)
  • Stack gas hydrocarbon emissions monitoring before and after an abatement system
  • Solvent recovery monitor for carbon bed break through
  • Thermal combustor compliance monitoring and testing
  • Catalytic converter compliance monitoring and testing
  • Carbon adsorption regeneration control
  • Measuring engine combustion efficiency
  • Raw exhaust vehicle emissions analysis
  • Hydrocarbon contamination monitoring in air and other gases
  • Carbon adsorption regeneration control
  • Detection of trace hydrocarbons in purity gases used in the semi conductor industry

The J.U.M. Engineering HFID Model VE572 is a time proven reliable and rugged Dual Channel Sequencing heated total hydrocarbon analyzer for low drift, high accuracy, sensitivity and stability.

The VE572 uses a hydrogen flame ionization detector (FID) in a heated oven to prevent the loss of high molecular weight hydrocarbons and to provide reliable performance in the analysis of high concentrations down to trace levels of THC-contaminants in high purity gases, air and other gases.

All sample wetted components are integrated into the heated chamber. The two permanent heated sample filters are designed to be fully regenerated by back purging with compressed air or nitrogen. With only a few seconds needed for back purging, this technique allows uninterrupted measurements during cleaning of the sample filter while not in the sample mode. During back purging the sample filter, the sample line is also cleaned. The use of a stack probe filter is not necessary.

The combustion air supply for the detector is built in. No expensive zero gas generator or external cylinder for synthetic air is needed.

Automated sample sequencing and back purging of the sample filter can be done with one of our optional timing controllers.

The Flame Ionization Detection (FID) method is used to determine the presence of total hydrocarbon concentrations in a gaseous sample. Burning hydrocarbon-free hydrogen in hydrocarbon-free air produces a negligible number of ions.

Once a sample containing hydrocarbons is introduced into this flame a very complex ionization process is started. This process creates a large number ions. A high polarizing voltage is applied between the two electrodes around the burner nozzle and produces an electrostatic field. Now negative ions migrate to the collector electrode and positive ions migrate to the high voltage electrode. The so generated ionization current between the two electrodes is directly proportional to the hydrocarbon concentration in the sample that is burned by the flame. This signal is measured and amplified by our electrometer-unit.

A sample pressure regulator provides a controlled back pressure at the sample capillary which gives admittance of a constant sample flow rate to the burner. This technique without the conventional back pressure regulator is used by J.U.M. Engineering for over 30 years to provide the highest possible sample flow rate stability and lowest maintenance. Our compactly designed flow control module for controlling the fuel and air flow rates via needle valves use high precision pressure regulators. The needle valves are factory adjusted and sealed to ensure the optimization of the burner.

  • Method of analysis: Flame Ionization Detector
  • Sensitivity: Max 1 ppm CH4 full scale
  • Response time: 02 seconds
  • T90 time: 12 seconds
  • T90 time with heated line (75m) and filter: less than 8 seconds
  • Zero drift: <10% full scale/24h
  • Span drift: <10% full scale/24h
  • Linearity: Up to 10000ppm within 1% FSD
  • Oxygen synergism: < 12% FSD
  • Measuring ranges (ppm): 0-10,100, 1000, 10000, 100000, others on request
  • Analog outputs: 0-10 VDC and 4-20 mA
  • Display: 3 1/2 digit
  • Sample pump: approx 25 l/min capacity @ operating temp
  • Zero and span adjust: Manual on front panel
  • Fuel consumption 100% H2: approx 20 ml/min @ 15 bar (22 psig)
  • Fuel consumption 40%H2/60%He: approx 90 ml/min @ 15 bar (22 psig)
  • Burner air consumption: built in burner air supply
  • Oven temperature: 190°C(374°F)
  • Temperature control: u-processor PID controller
  • Power requirements: either 230VAC/50HZ, 850 W or 115VAC/60HZ, 850 W
  • Ambient temperature: 5-43°C(41-110°F)
  • Dimensions (W x D x H): 19' (483 mm) x 460 mm x 221 mm
  • Weight: approx 28 kg (62 lbs)

J.U.M. reserves the right, at any time and without notice, to change specifications presented in this data sheet and assumes no responsibility for the application or use of the devices described herein.

  • AMU 572: Automatic controlled range change
  • AP0 572: External automatic programmable backpurge system for the sample filter
  • AZM572: Automatic flame ignition and re-ignition
  • DCC 572: Dual concentration alarm w. individual adjustable thresholds and alarm outputs
  • ENGA 572: 6-digit engineering units display 0-100.000 ppm with RS232 data output.
  • FOAS 572: Automatic fuel shut off valve for flame out control
  • HBPR 572: Fully heated sample back pressure regulator
  • PDA 572: Sample pressure monitor with alarm
  • RCA 572: 0-20mA analog output instead of 4-20mA
  • RCC 572: Remote controlled range change
  • RCIO 572: 0-20 mA analog output, galvanically isolated instead of std. 4-20 mA
  • RCI4 572: 4-20 mA analog output, galvanically isolated instead of std. 4-20 mA
  • TPR 572: External temperature controller for J.U.M. heated sample lines Model TJ 100
  • MBP 572: Integrated bypass pump for very long sample lines, also compensates sample pressure fluctuations

Availability o1: 1 options may change without announcement!

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