Time Electronics 1077 Milliamp Transducer Simulator - Manual (Page 2)

2
1077 Technical Manual P a g e | 2
C ontents
1.
Introduction ...................................................................................................... 3
2.
S pecifications ................................................................................................... 4
3.
F ront P anel C ontrols ........................................................................................ 6
4.
Operation .......................................................................................................... 8
4.1. Principle of Operation of the 2 Wire 4/20mA System ..................................... 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.
C ircuit 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.
G uarantee & S ervicing ................................................................................... 18
All Time Electronics' instruments are subject to continuous development and improvement and in
consequence may incorporate minor detail changes from the information contained herein.