TVOC 2 is a fixed photoionisation detector (PID) for the continuous measurement of total volatile organic compounds (VOCs). TVOC 2 can accurately measure three detection ranges.
Photoionisation (PID) detection |
Safety |
Ease of use |
Low cost operation |
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) |
Ingress Protection Rating |
Designed to IP65 |
Power |
4-20mA requires a 8-35VDC power supply |
Ranges |
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, 5 digit LCD, 4 colour LED’s |
Response ** |
Sensor – T90 <5 sec |
Accuracy |
0 to 100 ppm: ± 10% or ± 1 ppm (whichever is greater) |
Linearity |
0 to 1000 ppm: >75% |
Calibration |
Magnetically accessed 100 ppm Isobutylene via calibration kit accessory |
Temperature |
Operating: -20 to 50°C, -4 to 122°F Humidity: 0-95% RH |
Weight & dimensions |
Instrument: 1.4 kg (3.1 lb) packed: 1.6 kg (3.5 ib) |
4-20 mA alarm levels |
Selectable 2 mA & 3.5 mA options |
NB: All specifications are based upon isobutylene calibration at 20°C (68°F) 50% RH, up to 100 ppm at atmospheric pressure.
* The Fence Electrode technology referred to in this document is produced by Ion Science Ltd, and protected by patents. U.S. Patent No. 7,046,012. EP 1474681, other patents pending.
** TVOC has a variable duty cycle set to 1 minute as standard. The user can adjust this between 5 sec- onds and 5 minutes. TVOC is a registered trademark of Ion Science Ltd.