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Total VOC Detector
Product Information
Products
Power up the TVOC and it will monitor for volatile organic compounds all day every day.
The TVOC is a robust monitor and has a large clear display and indicates the gas level in ppm, parts per million.
TVOC measures most VOCs including fuel vapours, solvent cleaners, paints, de-greasers, adhesives, inks etc. Levels up to 1,000ppm are measured.
A 4-20mA analogue output allows you to connect an optional remote alarm or switch or fan etc.
The TVOC can be used in a Zone 2 area without the need for safe barriers. Zone 1 area monitoring means barriers would be required. Contamination issues are always a potential problem but because TVOC incorporates the patented Ion Science fence electrode technology, the instrument will provide extensive periods of trouble free operation.
TVOC is also designed to operate by diffusion which means modest volumes of gas or vapour are sampled further reducing the risk of contamination.
Product 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 oC 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
Technical Specifications
SENSOR (PID)
10.6 eV lamp with Ion Science patented Fence Electrode
technology*
INTRINSICALLY SAFE APPROVALS
II 2 G EEx ia IIC T4 (-20 oC ≤ Ta ≤ 50 oC) IECEx pending
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 oC (-4 - 122 oF) Humidity: 0-95% RH
(non- condensing)
WEIGHT & DIMENSIONS
Instrument: 1.3 kg (2.9 lb) Packed: 1.47 kg (3.2 lb)
Dimensions: 120 x 160 x 70 mm (4.7 x 6.3 x 2.8”)
NB: All specifications are against an isobutylene calibration at 20 °C, 90% RH and up to 100 ppm.
* The Fence Electrode technology referred to in this document is produced
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