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The UPS III is a rugged and extremely compact Loop Calibrator. Measuring 3" x 5" and weighing just 9.7 ounces, it fits comfortably in a shirt pocket. It is an essential tool for loop testing, instrument maintenance and valve set-up, with an easy to read display and simple to use time saving features.
| Function | Range | Resolution | 1 year Accuracy1 % rdg + count | Remarks |
| Source mA | 24 mA | 0.001 | 0.01% + 2 | V-max 75V |
| Source mA and 24V | 24 mA | 0.001 | 0.01% + 2 | R-max 1 k Ω at 20 mA |
| Measure | 24 mA | 0.001 | 0.01% + 2 | V-max mA 75V |
| Measure mA and 24 | 24 mA | 0.001 | 0.01% + 2 | R measure 15 Ω |
| Measure V | 60 V | 0.001 | 0.02% + 4 | R measure 1 M Ω |
| Continuity | < 100 Ω | 1 mA current |
1Accuracy includes temperature effects 62°F to 80°F (17°C to 27°C). For use
outside these limits add 0.0015%/°F (0.003%/°C).
Electrical
Power Supply
4 x 1.5 V AA-size alkaline batteries (standard) or universal
power supply (see option B)
Battery Life
75 hours in read mode, 18 hours at 12 mA
Auto Power Down
30 minutes after last key press
Low Battery Warning
Battery symbol displayed
Open Loop
Flashes “open loop”
Loop Resistance High
Flashes “check loop Ω”
Out of Range
Displays <<<< (under), >>>> (over)
Hart Resistor
235 Ω menu selectable loop resistor
Environmental
Calibration Reference
72°F (22°C) ±2°F(±3.6°C)/RH 45% ±15%
Operating Temperature
14°F to 122°F (-10°C to 50°C)
Relative Humidity
0% to 90% non-condensing
Conformity
EN 61010, /EN 61326-1:1997 + A1:1998, CE marked
Physical
Housing Material
High impact ABS
Dimensions (w x h x d)
3 in x 5 in x 1 in (77 mm x 129 mm x 24 mm)
Weight
9.7 oz (275 g) including batteries
Display
Graphic LCD, 1.2 in x 2.1 in (31 mm x 54 mm)
Electrical Terminals
Gold plated, 4 mm sockets
Options
(A) Protective Over-boot_P/N UNO-38023
This nitrile rubber over-boot provides maximum impact
protection. A bench stand, hanging loop and two-part
“quick fit” belt attachment are incorporated into the
design.
(B) Carry Case_P/N UNO-38016
AC line adapter to power the UPS III
(C) Mains Adaptor_P/N 191-129
A universal mains input adaptor to power the UPS III
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