HT instruments HT9 - Manual (Page 5)

HT6-HT8-HT9
EN - 4
2. GENERAL DESCRIPTION
This manual refers to the following products: HT6, HT8, HT9. The characteristics of the
models are listed in the following table:
Function HT6 HT8 HT9
Test lamps with internal gas 
AC/DC voltage and polarity measurement   
Phase sequence   
Continuity test   
Phase detection function with 1 terminal   
Torch function   
LCD display  
Tab. 1: Characteristics of the models
The instrument can also be used to check reactors, starters, capacitors and resistors,
further to the following kinds of lamps:
 Fluorescent lamps
 Low-pressure sodium lamps
 High-pressure sodium lamps
 Neon tubes
 Mercury-vapour lamps and halogen lamps
3. PREPARATION FOR USE
3.1. INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical
point of view. All possible precautions have been taken so that the instrument is delivered
undamaged.
However, we recommend generally checking the instrument in order to detect possible
damage suffered during transport. In case anomalies are found, immediately contact the
forwarding agent.
We also recommend checking that the packaging contains all components indicated in §
7.4. In case of discrepancy, please contact the Dealer.
In case the instrument should be returned, please follow the instructions given in § 8.2.
3.2. INSTRUMENT POWER SUPPLY
The instrument is supplied with two 1.5V AA IEC LR03 alkaline batteries, included in the
package.
In order to prevent battery discharge, batteries have not been inserted in the instrument.
For battery installation and replacement, follow the instructions given in § 6.2.
3.3. CALIBRATION
The instrument has the technical specifications described in this manual. The instruments
performance is guaranteed for 12 months.
3.4. STORAGE
In order to guarantee precise measurement, after a long storage time under extreme
environmental conditions, wait for the instrument to come back to normal condition (see
the environmental specifications contained in § 7.3.1 before use).