Time-electronics 1048 Voltage-Current-Loop Calibrator Manuel d'utilisateur Page 1

V1.2 30/12/10 Time Electronics Ltd Botany Industrial Estate, Tonbridge, Kent, TN9 1RH Tel: +44(0)1732 355993 Fax: +44(0)1732 770312 Email: mail@t

10 V1.2 30/12/10 Page | 10 1048 Technical Manual 3.7. Sink - transmitter simulator (TX SIM) In the Sink function, the unit simulates a process f

11 V1.2 30/12/10 Page | 11 1048 Technical Manual 4. Additional Operating Modes These modes are designed to automate and speed up the process of te

12 V1.2 30/12/10 Page | 12 1048 Technical Manual 4.2. STEP – Automatic This function provides a method of automatically stepping through the fixe

13 V1.2 30/12/10 Page | 13 1048 Technical Manual 5. Operating Precautions 5.1. Display The LCD display should not be exposed to strong sunlight f

14 V1.2 30/12/10 Page | 14 1048 Technical Manual 6. Power S upplies 6.1. Auto-power down If the unit is not used for 15 minutes, it will automa

15 V1.2 30/12/10 Page | 15 1048 Technical Manual 7. Maintenance 7.1. Recalibration Calibration equipment required: A) A precision DC voltage ca

16 V1.2 30/12/10 Page | 16 1048 Technical Manual 7.2. Dis-Assembling the Unit A. Ensure that the unit is switched off before removing the rear

17 V1.2 30/12/10 Page | 17 1048 Technical Manual 7.3. Trimmer Locations P3 P7 P8 P4 P5 P9 P2 P6

18 V1.2 30/12/10 Page | 18 1048 Technical Manual 7.4. Measure Function Calibration 1) a) Switch on the unit while holding down the ‘Decrement-DE

19 V1.2 30/12/10 Page | 19 1048 Technical Manual 7.5. Step Mode Calibration 1) a) Select ‘SRC’ on the Mode select switch. b) Select 0.22 o

2 V1.2 30/12/10 Page | 2 1048 Technical Manual Contents 1. Introduc tion ...

20 V1.2 30/12/10 Page | 20 1048 Technical Manual 7.7. Re-Assembling the Unit Re-assemble the unit in the reverse order as in 5) through to 1).

21 V1.2 30/12/10 Page | 21 1048 Technical Manual 8. Specifications DC Current -Source and Measure Span: 0 - 22mA (Source), 0 - 22mA and 22-70mA

22 V1.2 30/12/10 Page | 22 1048 Technical Manual Sink (TX SIM) 2 wire transmitter simulation: External excitation voltage, 3V min, 50V max. The c

23 V1.2 30/12/10 Page | 23 1048 Technical Manual 9. Guarantee & S ervicing Guarantee Period This unit is guaranteed against defects in materi

3 V1.2 30/12/10 Page | 3 1048 Technical Manual 1. Introduction The 1048 is a current, voltage, and loop calibrator that meets the needs of R&D

4 V1.2 30/12/10 Page | 4 1048 Technical Manual 2. Front panel controls and operating modes A. Input/Output terminals B. 4.5 Digit

5 V1.2 30/12/10 Page | 5 1048 Technical Manual The unit has three principal operating modes: 2.1. Operating Mode: NORMAL Provides manual operati

6 V1.2 30/12/10 Page | 6 1048 Technical Manual 3. Normal Operating Mode 3.1.1. Resolution high/low The unit has a unique method of changing the

7 V1.2 30/12/10 Page | 7 1048 Technical Manual Source function (V & mA) The NORM position outputs signals in the polarity indicated by the ter

8 V1.2 30/12/10 Page | 8 1048 Technical Manual 3.3. Measure – Current The unit measures current in three selectable ranges, 0 to 0.22mA (displaye

9 V1.2 30/12/10 Page | 9 1048 Technical Manual 3.5. Source – Voltage The unit outputs voltage from 0 to 22V in three ranges, 0 to 0.22V (displaye