1 K0317 Issue No. 3
UPS III Loop Calibrator
Introduction
The Druck UPS III Series of loop calibrators can supply power
(source mode) and produce readings (measure mode) to
perform field calibrations on 2-wire devices. The set-up menu
enables the user to “source” or “measure” in either voltage or
current and to perform continuity tests. These user
instructions include the operation, safety instructions and
installation requirements for the loop calibrator.
Specifications
Accuracy
Values in table below includes temperature effects 17°C to 27°C
Outside these limits .................. 0.003%/°C(0.0015%/°F)
Calibration Reference................ 22°C ±1°C/RH45%±15%
*Resolution 0.001 lsd least significant digits
** Audio + visual rdg reading
Hart® communications...............menu selectable 220
Ω
loop resistor
Operating Temperature...... -10°C to 50°C (-14°F to 122°F)
Storage Temperature......... -20°C to 70°C (-4°F to 158°F)
This loop calibrator meets the essential protection
requirements of the relevant EEC directives.
Conforms to......... EN61010, EN 61326-1(1997)+ A1(1998)
Electrical Power Supply
.................................... 4 x 1.5 V alkaline size AA or
Universal power supply {see accessories}
Mode Range Accuracy Remarks
Source mA 0 to 24 mA* 0.01% rdg + 2 lsd V-max. 75V
Source mA +
24V 0 to 24 mA*0.01% rdg + 2 lsd R-max 1k
Ω
at 20 mA
Measure mA 0 to 24 mA*0.01% rdg + 2 lsd V-max. 75V
Measure mA
+ 24V 0 to 24 mA*0.01% rdg + 2 lsd R-measure
15
Ω
Measure V 0 to 60V* 0.02% rdg + 4 lsd R-measure
1M
Ω
Continuity <100Ω ** -1mA
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