User Manual

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1077 Technical Manual Page | 2
Contents
1. Introduction ...................................................................................................... 3
2. S pecifications ................................................................................................... 4
3. Front Panel Controls ........................................................................................ 6
4. Operation .......................................................................................................... 8
4.1. Principle of Operation of the 2 Wire 4/20mA Syste m ..................................... 8
4.2. Checking/Calibrating the Transducer ............................................................. 9
4.3. Checking/Calibrating the Recorder ................................................................. 9
4.4. Test/Calibrate Current Meter/Recorder and Power Unit ................................. 9
4.5. Setting the Output Voltage ............................................................................... 9
4.6. Operation as a Current Load.......................................................................... 10
4.7. Operation as a Current Source ...................................................................... 11
4.8. Operation as a Line Simulator ....................................................................... 12
4.9. Recharging ...................................................................................................... 13
5. Circuit Des cription ......................................................................................... 14
5.1. Power Supply .................................................................................................. 14
5.2. Mains Re-charger ............................................................................................ 14
5.3. Circuit Module and Range Switch ................................................................. 14
6. Maintenance ................................................................................................... 15
6.1. Dismantling the Instrument ........................................................................... 15
6.2. Fuse Replacement .......................................................................................... 15
6.3. Repair .............................................................................................................. 15
6.4. Calibration ....................................................................................................... 16
7. Guarantee & S ervicing ................................................................................... 18
All Time Electro ni cs' i nstr u ment s are subj ect to continuous development and improvement and in
consequence may incorporate minor detail changes from the information contained herein.