Product Overview
The SUP RTX2500-D is a smart differential pressure transmitter in the RTX2000 series. It is suitable for differential pressure measurement in industrial process systems where gas, liquid or vapor media are used.
The transmitter provides a two-wire 4 to 20 mA analog output with HART® 7 digital communication. It can be configured through the optional LCD display with local buttons or through HART® digital communication, making it suitable for modern process control and automation systems.

Technical Specifications
| Item |
Specification |
| Model |
SUP RTX2500-D |
| Transmitter type |
Differential pressure transmitter |
| Measuring media |
Gas, liquid or vapor |
| Output |
Two-wire 4 to 20 mA / HART® 7 |
| Supply voltage |
10.5 to 45 VDC |
| Intrinsically safe supply |
Not exceeding 28 VDC |
| Local user interface |
Optional LCD display; local 3-button operation |
| Response time |
≤100 ms in fast response mode |
| Long-term stability |
±0.1% URL / 10 years |
| Damping |
0 to 100 s configurable |
| Alarm current |
3.6 mA or 22.8 mA |
| Compensation temperature |
-40 °C to +80 °C |
| Ambient temperature |
-40 °C to +85 °C |
| Process temperature |
-40 °C to +120 °C |
| LCD display temperature |
-35 °C to +85 °C |
| Relative humidity |
0–95% RH |
| Electrical connection |
M20×1.5 female or 1/2 - 14 NPT female |
| Process connection |
1/4 - 18 NPT female |
| Fasten thread |
7/16-20 UNF female or M10 × 1.5 female |
| Drain valve material |
Stainless steel 316L |
| Process connection material |
Stainless steel 316L |
| Enclosure protection |
IP65 / IP67 |
Measuring Ranges
| Range Code |
Minimum Span |
Lower Range Limit |
Upper Range Limit |
| DA |
1 mbar |
-20 mbar |
20 mbar |
| D0 |
1 mbar |
-20 mbar |
20 mbar |
| D1 |
5 mbar |
-100 mbar |
100 mbar |
| D3 |
10 mbar |
-1 bar |
1 bar |
| D4 |
20 mbar |
-2 bar |
2 bar |
| D5 |
100 mbar |
-5 bar |
10 bar |
| D6 |
500 mbar |
-5 bar |
50 bar |
| D7 |
1.4 bar |
-5 bar |
140 bar |
Applications
Industrial differential pressure measurement
Gas differential pressure monitoring
Liquid differential pressure measurement
Vapor / steam process pressure measurement
Process monitoring and control systems
HART-enabled DCS / PLC integration
Hazardous-area installations with selected certified configuration

Frequently Asked Questions
What is the Druck RTX2500-D?
SUP RTX2500-D is a smart differential pressure transmitter for industrial process differential pressure measurement.
What output does the RTX2500-D support?
It supports two-wire 4 to 20 mA output with HART® 7 communication.
What media can it measure?
It is applicable for gas, liquid or vapor media.
What is the pressure range of RTX2500-D?
Available ranges cover -20 mbar to 140 bar depending on the selected range code.
What is the accuracy?
Accuracy is up to ±0.04% span for selected D3–D7 premium configurations when r ≤ 10. Actual accuracy depends on range code, accuracy grade and turndown ratio.
Does it support local configuration?
Yes. With the optional LCD display, RTX2000 pressure transmitters can be configured through local 3-button operation or HART® communication.
Can the pressure port be exchanged on site?
Yes. RTX2500-D supports on-site pressure port exchange.