For usage in hazardous environments, the Ion Science TVOC is certified ATEX Zone 2 and is the first intrinsically safe fixed VOC monitor. IECEx certification is a guarantee of quality. Volatile organic compounds (VOCs) can be continuously measured using the TVOC, which is a fixed photoionization detector (PID) (VOCs). From a single device, TVOC can precisely measure over three distinct detection ranges.

They incorporate a 1-minute default timer for a changeable duty cycle. It’s adjustable from 5 seconds to 5 minutes. TVOC employs a diffusive sampling technique, which reduces the need for lamp cleaning and servicing, compared to pumping systems. Using TVOC’s 4-20 mA analog output, a DCS system can be used to monitor and manage VOC levels in the workplace.

Features:

• ATEX Zone 2
• IECEx
• 10.6 eV lamp
• Fence Electrode Technology
• Large LCD display
• Four color LED’s
• Multiple Range
• Rugged and Robust design
• Humidity Resistant
• Anti-contamination
• IP65

Versions

• TVOC Fixed PID Detector (ATEX Approved)
• System+ Environmental Monitor with PSU + Lower Input glands

TVOC systems can be utilized in Zone 2 hazardous areas without safety barriers if they have ATEX permits. In Zone 1 hazardous environments, with safety barriers, ATEX and IECEx certifications allow TVOC to be employed. TVOC does not require a permit for hot work, and the PID sensor can be accessed and replaced in seconds, making installation, service, and calibration straightforward.

Best available photoionization (PID) detection

• PID independently verified as best performing on the market
• Range: 0 to 10, 0 to 100 or 0 to 1000 ppm from just one instrument
• In built humidity resistance with no need to compensate
• Anti contamination design for extended field operation
• Variable duty cycle prolongs run time
• Reliable diffusive monitoring no pump required

Ease of Use

• Simple to use minimal training required
• Easy access PID sensor for fast, simple servicing
• Simple calibration procedure
• Easily integrated into a control system

Safety

• Accurate results over all environmental conditions
• Rugged and robust design withstands harsh environments
• Large LCD display for clear readings
• ATEX and IECEx approved

Low Cost Operation

• Inexpensive consumables and parts
• When you register your instrument online, you get a 2-year warranty.

Specifications

SENSOR (PID)	10.6 eV lamp with Ion Science patented Fence Electrode Technology*
HAZARDOUS AREA SAFETY APPROVALS	ATEX: II 3 G Ex nA IIC T4 (-40°C ≤Ta ≤50°C)
	ATEX / IECEx: II 2 G EEx ia IIC T4 (-20°C ≤Ta ≤50°C)
INGRESS PROTECTION RATING	Designed to IP65
	Dependent on cable glands fitted sensor to IP53
	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 to 10 ppm, 0 to 100 ppm, 0 to 1000 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**
ACCURACY	0 to 100 ppm : +/- 2% or +/- 1 ppm (whichever is greater)
	100 to 1000 ppm: +-10%
LINEARITY	0 to 1000 ppm: >75%
CALIBRATION	Magnetically accessed
	100 ppm Isobutylene via calibration kit accessory
TEMPERATURE	Operating: -20 to 50 oC (-4 - 122 oF) Humidity: 0-95% RH
	(non- condensing)
WEIGHT & DIMENSIONS	Instrument: 1.4 kg (3.1 lb)
	Packed: 1.6 kg (3.5 lb)
	Dimensions: 188 x 126 x 78 mm (7.4 x 4.9 x 3”)
4-20 MA ALARM LEVELS	Selectable 2 mA & 3.5 mA options

Resources:

• Brochure Catalog