Time Electronics 1048 Voltage-Current-Loop Calibrator - Manual (Page 22)

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V1.2 30/12/10 P a g e | 22 1048 Technical Manual
Sink (TX SIM)
2 wire transmitter simulation: External excitation voltage, 3V min, 50V max. The current sink
levels are adjustable with accuracies as in the three mA source ranges shown on page 21.
Output Steps
5 fixed steps for I output 4, 8, 12, 16 & 20 mA
11 fixed steps for V output 0,1,2...10V
21 fixed steps for V & I output 0,1,2…...20
Stepping can be done manually or can be set to run automatically up and down
continuously with adjustable speed control (1-10 sec/step). Dwell time (top and bottom) 1
step period. The resolution of the display is 3.5 digits and accuracy as source specification.
Output Ramp
Current Ramp 4 to 20, or 0 to 20 on all ranges.
Voltage Ramp 0 to 10, or 0 to 20 on all ranges.
Ramp time 7 sec. Dwell (top & bottom) 5 sec. Manual restart.
Ramp operation is also available in Sink(TX SIM) function.
Source Output Adjustment
A ten turn potentiometer is provided for quick positioning with fine adjustment using up/down
incrementing buttons.
Power
A single internal 9V PP3 size battery or an optional external mains power supply. Battery
life: Typically about 15 hrs use.
A 15 minutes inactivity auto-power down feature is also included to conserve the battery,
see page 13, section 5.3.
Operating temperature: -10 to 50 degC (0 to 120 degF)
Operating Humility: 10-90% non-condensing 25 degC(77 degF)
Dimensions: 14 x 8 x 5 cm, 280 gm (5.5 x 3 x 2in, 10oz)
Housing
The 1048 is supplied in a rugged pocket size hard ABS case. It comes complete with a
leatherette carrying case. Test leads (not supplied) can be stored inside the leatherette
case.
Ordering Information
Voltage/Current/Loop Calibrator 1048
Mains power supply 230V AC 7643
Mains power supply 115V AC 7652
NPL traceable calibration certificate C176
UKAS calibration certificate C138