How do you change the LM1 display to read HVLT or LVLT?

The LM1 manometer should be supplied to correspond with the tester and will display either LVLT or HVLT when powered up. If this is incorrect, or needs to be changed then re-initialise the LM1 as follows: Hold down the I/M key on the keypad while simultaneously switching the LM1 manometer on with the ON key. To select LVLT press the key marked zero. To select HVLT press the key marked light. The unit will now remember the selected option, even when the unit is switched OFF, and will subsequently require just operation of the ON key to turn the manometer on.

How do you change the LM1 display to read HVLT or LVLT?

The LM1 manometer should be supplied to correspond with the tester and will display either LVLT or HVLT when powered up. If this is incorrect, or needs to be changed then re-initialise the LM1 as follows: - Hold down the I/M key on the keypad while simultaneously switching the LM1 manometer on with the ON key. - To select LVLT press the key marked zero - To select HVLT press the key marked light The unit will now remember the selected option, even when the unit is switched OFF, and will subsequently require just operation of the ON key to turn the manometer on.

What is the size of the flexible ducting supplied with the HVLT?

The flexible ducting is 100mm nominal ID (4 inch).

TSI / Airflow HVLT (230V kit) available to hire from BSRIA Instrument Solutions

TSI / Airflow HVLT 230V duct leakage kit complete with ducting and instrumentation

Sorry, this product is currently unavailable.

Overview

A portable ductwork leakage tester for high velocity applications. The unit is supplied complete with a ‘Leakage Management Unit’ which gives a direct reading of the leakage rate in either imperial or metric units, flexible ducting and a duct adaptor plate.

- Tests to DW143 and DW144 class A B and C ductwork

- Flow range up to 241 m³/hr

- Portable, fits in an estate type car

Features

Virtually anywhere low pressurisation is necessary, laboratory clean rooms, test cells or sealed enclosures, Airflow Leakage Testers provide a fast accurate measurement solution. The method of measuring the air flow rate is a primary standard using conical inlets directly related to ISO 5801.

Electronic speed control is provided to adjust the flow rate/pressure delivered by the unit.

The instrument is portable in the average estate car and will allow periods of testing even in arduous site conditions. The new, state of the art, LM1 Electronic Leakage Manager offers instant measurement, display and control of system performance.

Technical

Air performance at maximim air speed

230V version (6amp)

67 l/s @ 2500 Pa, 241 m³/hr @ 2500 Pa

110V version(10amp)

50 l/s @ 2500 Pa, 180 m³/hr @ 2500 Pa

HVLT contents and dimensions

LM1 manometer, tubing, flexible ducting 3.7 metres long with end fitting 100mm (4") diameter

Overall size - Trolley 1050mm long x 570mm wide x 590mm high

Weight 60kg

IMPORTANT NOTE - Instrument Hire Models

Instrument Hire models are supplied as a 110V versions only, and this product is not available for purchase.

Support documents

Download
Category
File type
Download

Download: Airflow HVLT LVLT LM1 user manual.pdf Airflow HVLT LVLT LM1 user manual
Category: Technical document
File type: Adobe Acrobat
: Download (1 MB)

Download: Airflow duct leakage testers data sheet.pdf Airflow duct leakage testers data sheet
Category: Technical document
File type: Adobe Acrobat
: Download (107 KB)

Common customer questions & answers

QQuestion How do you change the LM1 display to read HVLT or LVLT?: AAnswer The LM1 manometer should be supplied to correspond with the tester and will display either LVLT or HVLT when powered up. If this is incorrect, or needs to be changed then re-initialise the LM1 as follows:

Hold down the I/M key on the keypad while simultaneously switching the LM1 manometer on with the ON key.

To select LVLT press the key marked zero.
To select HVLT press the key marked light.
The unit will now remember the selected option, even when the unit is switched OFF, and will subsequently require just operation of the ON key to turn the manometer on.

QQuestion How do you change the LM1 display to read HVLT or LVLT?: AAnswer The LM1 manometer should be supplied to correspond with the tester and will display either LVLT or HVLT when powered up. If this is incorrect, or needs to be changed then re-initialise the LM1 as follows:

- Hold down the I/M key on the keypad while simultaneously switching the LM1 manometer on with the ON key.

- To select LVLT press the key marked zero

- To select HVLT press the key marked light

The unit will now remember the selected option, even when the unit is switched OFF, and will subsequently require just operation of the ON key to turn the manometer on.