This Local Exhaust Ventilation assessment is mandatory to be conducted annually, only by a registered Hygiene Technician. However, on monthly basis your organization is allowed to conduct a general self-inspection on the general condition of the system.
In general, the efficiency of the Local Exhaust Ventilation system shall be gauged by the performance of its Duct Velocity, Face Velocity, Capture Velocity, as well as the performance (horse power) of motor and fan (rpm).
It is a requirement by DOSH that the engineering control equipment or Local Exhaust Ventilation system (LEV) be inspected at least annually besides monthly checking and recording internally.
Have any Questions?
We are happy to help! Contact us at Testo Regional Office
(Singapore, Malaysia & Indonesia)
Call : +603 7932 5990
Email : info@testo.my
Smart Probes LEV Set
If you need simple measurements for daily measurement in LEV, this is a good entry level set with a combination of thermal anemometer and differential pressure measuring instrument with smartphone operation.
Readings can be viewed conveniently on your smartphone/tablet via the testo Smart Probes App and reports can emailed immediately.
| Technical Data | |
Meas. Parameters | Measurement of air velocity, volumetric flow, air temperature and differential pressure on air and filters |
Measuring range | Temperature : -20 to +60°C Velocity : 0 to 30 m/s Differential Pressure : -150 to +150 hPa |
Accuracy | Temperature : ±0.5 °C Velocity : ±(0.1 m/s + 5% of m.v.) (0 to 2 m/s) ±(0.3 m/s + 5% of m.v.) (2 to 15 m/s) Differentiate Pressure : ±0.05 hPa (0 to +1 hPa) ±(0.2 hPa + 1.5% of m.v.) (+1 to +150 hPa) |
Resolution | Temperature : 0.1 °C Velocity : 0.01 m/s Differential Pressure : 0.01 hPa |
Other | Requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0 |
Order no. | 550000 0014 |
Pocket Series LEV Set
This LEV measurement set is suitable for beginner for quick and easy measurement.
The equipments are at pocket size which comes in handy to conduct a quick test for instant results. Results are display on screeen and recording values can be done easily.
| Technical Data | |
Meas. Parameters | Measurement of air velocity, volumetric flow, air temperature and differential pressure on air and filters |
Measuring range | Temperature : -20 to +50°C Velocity : 0 to 5 m/s (-20 to 0 °C) 0 to 10 m/s (0 to +50 °C) 0 to 99990 m³/h Differential Pressure : 0 to 100 hPa |
Accuracy | Temperature : ±0.5 °C Velocity : ±(0.1 m/s + 5% of m.v.) (0 to 2 m/s) ±(0.3 m/s + 5% of m.v.) (Remaining Range) Differentiate Pressure : ±0.03 hPa (0 to 0.30 hPa) ±0.05 hPa (0.31 to 1.00 hPa) ±(0.1 hPa + 1.5 % of mv) (1.01 to 100 hPa) |
Resolution | Temperature : 0.1 °C Velocity : 0.01 m/s Differential Pressure : 0.01 hPa |
Other | Differential pressure measuring instrument, including silicone connection hose, protective cap, calibration protocol, belt |
Order no. | 550000 0015 |
testo 440 dP LEV Set
This is suitable for LEV application expert. The professional LEV series is a reliable multi-function measuring instrument for analysis, regulating and testing VAC systems.
It has an integrated pressure difference sensor for measurements with pitot static tube and filter monitoring and a wide range of optionally available sensors and probes to choose from.
| Technical Data | |
Meas. Parameters | Measurement of air velocity, volumetric flow, air temperature and differential pressure on air and filters |
Measuring range | Temperature : -20 to +70°C Velocity : 0 to 30 m/s Differential Pressure : -150 to +150 hPa |
Accuracy | Temperature : ±0.5 °C Velocity : ±(0.03 m/s + 4% of m.v.) (0 to 20 m/s) ±(0.5 m/s + 5% of m.v.) (20.01 to 30 m/s) Differentiate Pressure : ±0.05 hPa (0 to +1.00 hPa) ±0.2 hPa + 1.5% of m.v. (+1.01 to +150 hPa) |
Resolution | Temperature : 0.1 °C Velocity : 0.01 m/s Differential Pressure : 0.01 hPa |
Other | Multifunction meter with measurement menu, eg : for determining the volume flow and timed and multi-point mean calculation. Temperature sensor, fixed cable (1.7m) with telescope (0.85m) |
Order no. | 550560 4402 07 |