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The new UPS4E from Druck is a one-handed, incredibly small, and durable loop calibrator. The UPS4E is the newest model in the Druck "UPS" series, which includes the beloved UPS-II and UPS-III. It is small enough to fit in the top pocket of an overall.
A contemporary, reasonably priced device with competitive lead times, the UPS4E replaces the outdated UPS-III (and UPS-II) loop calibrator.
A portable tool called the UPS4E is used to test and calibrate industrial control systems' current loops. In order to confirm the functionality of sensors, transmitters, and control systems, technicians can use it to source, measure, or simulate a precise electrical current, usually in the 4–20 mA range. It is a crucial tool for maintenance and troubleshooting in process automation systems because it also offers 24V loop power.
| Internal memory | 100,000 - point data logging memory |
|---|---|
| Operating temperature | -10°C to 50°C (14°F to 122°F) |
| Storage temperature | -20°C to 70°C (-4°F to 158°F) |
| Ingress protection | IP54. Protected against dust and splashing water from any direction |
| Humidity | 0 to 90% Rh non - condensing |
| Shock / vibration | MIL - PRF - 28800F CLASS 2 |
| EMC | EN61326 - 1:2013 |
| Electrical safety | EN 61010 - 1:2010 EN 61010 - 2 - 030:2023 |
| Enclosure materials | High impact ABS |
| Loop resistance high | Flashes primary reading to indicate error condition |
| Out of range reading | Flashes "---" on primary reading |
| Approvals | CE marked |
| Display | Size: 72.7 x 42.5mm (2.86 x 1.67in). Custom colour segment display |
| Size (L x W x H) | Safe Area: 145mm X 73mm X 25mm |
| Weight | Safe Area: 300 g including batteries |
| Power supply | 4x 1.5 V AA - size alkaline batteries |
| Battery life | Up to 72 hours in measured mode Up to 18 hours at 12 mA loop current |
| Auto power down | 10 minutes after last key press or disabled |
| Battery status | Battery symbol displayed with 4 segments |
| Electrical Terminals | Safe Area: 2x Gold plated, 4mm sockets |
| HART resistor | 250 Ohm optional loop resistor to support external HART communications |
| Connectivity | USB Type C connection to access data log and for firmware update. Safe area variant: Device can be powered through any commercially available certified USB adapter |
The Druck UPS4E is a specialized portable tool designed to test and calibrate 4–20 mA current loops in industrial process control systems. Technicians can use it to source, measure, or simulate precise current and deliver 24V loop power to evaluate transmitters, sensors, and related control hardware.
The UPS4E is the contemporary successor to the Druck UPS series, directly replacing legacy calibrator units including the Druck UPS-II and UPS-III with updated electronics, improved display technology, and USB-C connectivity.
Yes, the unit features an integrated, optional 250 Ohm internal loop resistor specifically provisioned to facilitate external HART communications during calibration and diagnostics.
The UPS4E runs on 4 standard 1.5 V AA alkaline batteries, lasting up to 72 hours in measurement mode and up to 18 hours at a 12 mA output. For safe-area use, it can also be powered directly via a certified USB power adapter through its Type-C port.
The calibrator provides internal memory capacity for up to 100,000 data logging points. Stored log files and device firmware updates are managed directly via the USB Type-C interface.
Built with a high-impact ABS casing, the UPS4E is rated IP54 for protection against ingress of dust and water splashes. It is also tested to MIL-PRF-28800F Class 2 standards for shock and vibration resistance across an operating range of -10°C to 50°C.
