UPS4E is a rugged and ultra-compact loop calibrator designed for single-handed operation. It is an essential tool for testing and powering mA control loops and mA devices in process automation. Ideal for instrument maintenance – with an easy-to-read display and user-friendly features such as step, span and valve check that save time.
UPS4E uses state-of-the-art electrical calibration technology to provide a reliable and cost-effective loop calibrator.
Display
The graphic display offers high contrast with backlight and shows the main reading along with % of full scale.
0 to 24 mA – Measure or Source
Internal 24V loop power is available in both measure and source modes – essential during plant shutdowns.
- In source mode, current is actively controlled by the UPS4E.
- In measure mode, current is determined by the external equipment under test.
Simultaneous % Readout
Displays mA and percentage value for 4–20 mA or 0–20 mA loops.
(1) Accuracy includes temperature effects from 10 °C to 30 °C (50 °F to 86 °F).
For use outside these limits, add 0.003 %/°C (0.015 %/°F).
Auto Step and Ramp
Adjustable ramp/step rates (1–599 seconds) for one-handed loop testing, valve setup and slew rate verification.
“Fast Set” Output
Set values with 0.001 mA precision. Ideal for alarm trip tests.
30 VDC Measurement
For loop diagnostics and maintenance of voltage-driven devices.
Datalogging
Stores over 100,000 data points. Manual activation and interval configuration via display. Data can be exported to PC.
Additional Features
- Standard AA batteries
- Supports inrush current up to 40 mA for 500 ms
- Battery status indicator
- Information screen showing serial number, software version and calibration date
- PIN-protected calibration and updates
| General Specifications |
| Internal memory |
100,000 data points (data logging) |
| Operating temperature |
-10 to 50 °C |
| Storage temperature |
-20 to 70 °C |
| Ingress protection |
IP54: protected against dust and splashing water |
| Humidity |
0 to 90 % RH, non-condensing |
| Shock/Vibration |
MIL-PRF-28800F Class 2 |
| EMC |
EN 61326-2-03 |
| Electrical safety |
EN 61010-1:2010, EN 61010-2-030:2012 |
| Enclosure material |
High-impact ABS |
| Loop resistance high |
Primary reading flashes on error |
| Out-of-range reading |
“—” flashing |
| Approvals |
CE marked |
| Display |
72 × 42.5 mm, custom segment display |
| Size (L × W × H) |
145 mm × 73 mm × 25 mm |
| Weight |
300 g including batteries |
| Power supply |
4 × 1.5 V AA alkaline batteries |
| Battery life |
Up to 72 h (measure mode), up to 18 h at 12 mA loop current |
| Auto power down |
After 10 minutes of inactivity (can be disabled) |
| Battery status |
4-segment battery symbol |
| Electrical terminals |
2 gold-plated 4 mm sockets |
| HART resistor |
Optional 250 Ohm loop resistor |
| Connectivity |
USB-C for data transfer and firmware updates |
Step, Span and Valve Check
Quickly step through linearity tests and zero/span adjustments. Valve mode allows seat check and actuator setting.
| Mode |
0% |
25% |
50% |
75% |
100% |
| 4–20 mA linear |
4 |
8 |
12 |
16 |
20 |
| 0–20 mA linear |
0 |
5 |
10 |
15 |
20 |
| 4–20 mA flow |
4 |
5 |
8 |
13 |
20 |
| 0–20 mA flow |
0 |
1.25 |
5 |
11.25 |
20 |
| 4–20 mA span check |
4 |
|
|
|
20 |
| 0–20 mA span check |
0 |
|
|
|
20 |
| 4–20 mA valve |
3.8, 4, 4.2 |
|
12 |
|
19, 20, 21 |
| 0–20 mA valve |
0, 0.2 |
|
10 |
|
19, 20, 21 |
Measurement Ranges & Accuracy
| Function |
Range |
Resolution |
1-year Accuracy
% of Reading + Counts |
| Source mA with external loop power |
20 mA |
0.001 |
±0.01% Rdg + 1 count |
|
24 mA |
0.001 |
±0.01% Rdg + 2 counts |
| Measure mA with external loop power |
±20 mA |
0.001 |
±0.01% Rdg + 1 count |
|
±24 mA |
0.001 |
±0.01% Rdg + 2 counts |
| Source mA with internal loop power |
20 mA |
0.001 |
±0.01% Rdg + 1 count |
|
24 mA |
0.001 |
±0.01% Rdg + 2 counts |
| Measure mA with internal loop power |
20 mA |
0.001 |
±0.01% Rdg + 1 count |
|
24 mA |
0.001 |
±0.01% Rdg + 2 counts |
| Source V |
±20 V |
0.001 |
±0.01% Rdg + 2 counts |
| Measure V |
±30 V |
0.001 |
±0.01% Rdg + 2 counts |
Datasheet
