Hazardous Area IS Ultrasonic Sensor (UL Explosion Proof) – Deeter RPS-409A-IS

Hazardous Area IS Ultrasonic Sensor (UL Explosion Proof)
Deeter RPS-409A-IS is a hazardous area ultrasonic sensor that is intrinsically safe and self contained.
The Deeter RPS-409A-IS has a 30mm PVC barrel housing and is powered by 16-30VDC with reverse polarity. The RPS-409A-IS has built in temperature compensation to provide accurate readings throughout the entire operating temperature range.
The RPS-409A-IS is designed to take advantage of today’s PLC and computer analog input cards. The numerical values that are programmed into the PLC or computer will determine the zero and span.
T&D distribute the complete range of Deeter Level Sensors and Float Switches.
Hazardous Area IS Ultrasonic Sensor (UL Explosion Proof) – Deeter RPS-409A-IS
Features
- Intrinsically safe and UL Listed
- LED indicator and self contained sensor
- Chemical resistance (PVC)
- Wide sensing and temperature ranges
- Quick disconnect connector
- Sync/Enable Input Line
Deeter RPS-409A-IS Hazardous Area IS Ultrasonic Sensor – Technical Specification
Hazardous Area IS Ultrasonic Sensor Approval & Application Standards | UL![]() |
Power Input | 16 – 30VDC Reverse Polarity Protected |
Input Current | 24mA maximum with 24VDC applied to the barrier |
Ambient Temperature |
-40° to 60°C (-40° to 140°F) |
Humidity | 0% – 95% Non-Condensing |
Housing | PVC Housing with a PVC sensing face |
Output | Analog Voltage Output 0-10V (Load 100k Ohms to infinity) Short Circuit Protected |
Weight | Sensor only 4 ounces |
DEETER RPS-409A-IS HAZARDOUS AREA IS ULTRASONIC SENSOR – Product Range
Hazardous Area IS Ultrasonic Sensor Part Number | Description | Sensor Range | Transducer Frequency | Response Time | Volts Per Inch |
Deeter RPS-409A-40-IS | 0 – 10 VDC Analog Output | 4″ to 40″ | 150kHz | 85ms | .250 |
Deeter RPS-409A-80-IS | 0 – 10 VDC Analog Output | 6″ to 80″ | 150kHz | 85ms | .125 |
Deeter RPS-409A-144-IS* | 0 – 10 VDC Analog Output | 12″ to 144″ | 70kHz | 85ms | .069 |
Deeter RPS-409A-216-IS* | 0 – 10 VDC Analog Output | 12″ to 216″ | 70kHz | 120ms | .046 |
Wiring for intrinsically safe applications

Level Sensors & Float Switches : ATEX IECEx & CSA Certified flameproof and explosion proof equipment is available for hazardous area applications. Image : ENPPI.
Liquid Level Sensors & Float Switches – Deeter Products
See how Deeter Electronics Group manufacture liquid level sensors and control equipment for commercial, industrial and hazardous area sensing of liquids with ATEX, IECEx and CSA Certified sensors. T&D can support, specify and supply explosion proof and flameproof level sensors for the global hazardous area industries including oil, gas and petrochemicals.

Contact T&D for Deeter Liquid Level & Float Sensors
➡ Did you know? T&D also supply Hydrostatic, Ultrasonic, Radar and Capacitive Level Measurement sensors, instruments and gauges.