Intrinsically Safe RPS-429AA Sensor
Intrinsically Safe RPS-429AA Sensor: Migatron’s third generation of intrinsically safe ultrasonic sensors are certified for use in Hazardous (Classified) Locations and Explosive Atmospheres. These sensors are among the first to receive an ANZEx certificate for use in Australia and New Zealand. They are also certified in Europe, the United States, and Canada. You can safely use these sensors in hazardous gas or dust environments classified as Zone 0, 1, 2, 20, 21, or 22 for ANZEx/ATEX/IECEx, and Class I, II, or III for C-UL-US, when paired with approved intrinsic safety barriers. The sensors are fully sealed, boasting an IP66/IP67 rating.
You don’t need calibration or special training to use these sensors. Simply apply power, and the output voltage will precisely indicate the distance to the target. For example, the RPS-429AA-40P-IS2 measures distances from 4 to 40 inches and outputs 0.444 mA for every inch between the sensor and the target. When the target is four inches away, the current output is 4.0 mA, and at forty inches, it’s 20.0 mA. This linear relationship makes it easy to convert current output into distance.
Similarly, the RPS-429AV-40P-IS2 measures distances from 4 to 40 inches but uses voltage output instead of current. It produces 0.111 volts per inch, so when the target is four inches away, the output is 1.0 volts, and when it’s forty inches away, the output reaches 5.0 volts.
The RPS-429A-IS is designed to integrate with modern PLC and computer analog input cards. The programmed numerical values in the PLC or computer determine the sensor’s zero and span settings.
Each sensor includes short-circuit protection for safety and built-in temperature compensation to ensure accurate readings across the entire operating temperature range.
The IS2 and IS3 designations indicate certification regions: IS2 is certified for global use, while IS3 is certified for the U.S. and Canada.
Key Features:
- Intrinsically Safe “ia”
- Multiple Sensing Ranges
- Temperature Compensation
- Wide Temperature Range
- 4-20 mA 2-Wire Current Loop Version
- 1-5 V Analog Voltage Output Version
- PVC Enclosure
Specifications:
| Specification | Details |
| Model | RPS-429A-IS |
| Power Input | 14 - 30 VDC with reverse polarity protection |
| Minimum Voltage at Sensor | 14.0VDC |
| Input Current (Analog Current) | 22mA maximum (RPS-429AA-IS) |
| Input Current (Analog Voltage) | 5mA maximum (RPS-429AV-IS) |
| Operating Temperature Range | -40°C to +60°C (-40°F to +140°F) |
| Humidity | 0 - 96% Non-Condensing |
| Enclosure Material | Polyvinyl Chloride (PVC) |
| Enclosure Rating | IP66/IP67 |
| Temperature Compensation | Yes |
| Approval Standards | ATEX, C-UL-US, IECEx |
| Additional Certifications | DEMKO 12 ATEX 1103028X; IECEx UL 12.0001X |
| Ambient Temperature Code | T4 (up to +60°C) |
| Mounting Considerations | M30 x 1.5 thread, avoid direct metal contact in a 13mm zone |
| Accessories | M12 Cables, ZSB-409A Zener Safety Barrier, DIN Rail Grounding Block, 1/8 DIN Digital Panel Meter with 4 Relays |
| Sensor Connection | M12 Receptacle (A-coded) |
| Cable Types | 2 and 4 Conductor (IP69-rated) |
| Short Circuit Protection | Yes |
Model Options:
| Model Number | Sensor Range | Response Time | Transducer Frequency | Voltage per Inch |
|---|---|---|---|---|
| RPS-429AA-40P-IS2 | 4 – 40″ | 100ms | 175kHz | 1.0V @ 4″ to 5.0V @ 40″ |
| RPS-429AA-40P-IS3 | 6 – 80″ | 100ms | 135kHz | 1.0V @ 6″ to 5.0V @ 80″ |
| RPS-429AA-80P-IS2 | 4 – 40″ | 100ms | 175kHz | 1.0V @ 4″ to 5.0V @ 40″ |
| RPS-429AA-80P-IS3 | 6 – 80″ | 100ms | 135kHz | 1.0V @ 6″ to 5.0V @ 80″ |
Certifications:
Canada & USA:
C-UL-US; UL File # E226209
Temperature Code T4
Class I, Division 1, Groups A, B, C, & D,
Class II, Division 1, Groups E, F, & G,
and Class III, Division 1
Europe (CENELEC):
DEMKO 12 ATEX 1103028X
I M1 / II 1 GD
Ex ia I/IIC T4 Ma/Ga
Ex ia IIIC T101°C Da
International (IECEx):
IECEx UL 12.0001X
Ex ia I/IIC T4 Ma/Ga
Ex ia IIIC T101°C Da
-40°C ≤ Ta ≤ +60°C
