UMR14-Series

Supported Applications

The Omega UMR14 Series is a medium-range ultrasonic level/distance transmitter-switch designed for non-contact distance measurement in tough industrial environments. As part of the broader U-Series family, these sensors measure liquid or solid levels and proximity without physical contact with the target material.

• Ultrasonic non-contact distance measurement (level, proximity, dimensioning)

Operating Conditions & Performance

The UMR14 model provides a maximum range of 14 ft. (4.3 m) with a minimum deadband of 4 in. (10.2 cm). The optimum operating range is specified as 4 in. (10.2 cm) to 10 ft (3m), particularly for small targets, dry materials, or hot conditions.

• Accuracy: Better than 0.5% of target distance in stable, homogeneous air environment; affected by temperature gradients, target echo strength, speed of sound in air or vapors
• Repeatability: Greater of +/-0.03 in. (0.76 mm) or 0.25% of target distance in stable environment
• Ambient Temperature: -40 to +158 F (-40 to +70 C), temperature compensated by internal sensor or external Reference Target
• Humidity: 0-100% (avoid heavy condensation)
• Ingress Protection: IP-68, NEMA-4X
• Measurement Rate: Default 50 msec (20 Hz); adjustable from 5 msec to 2.8 hours; faster rates limit max target distance and are affected by filter selections

Analog Resolution & Output Load

The analog output resolution provides 4100 steps over 0-10 VDC and 3279 steps over 0-20 mA, scaled between user-set distance endpoints. Serial data resolution is 0.0034 in. (0.086 mm). Current loop load resistance limits are 450 Ohm max @ >15VDC or 250 Ohm max @ 10 VDC; maximum loop resistance is 500 Ohm @ 24 VDC sensor input voltage.

Configuration Options

The UMR14 Series supports multiple simultaneous outputs configurable via OmegaVIEW PC software or a rear TEACH pushbutton (except on serial-only models). The series offers full-featured configurations with two selectable outputs, including solid-state switches and analog signals.

Housing & Mounting

• Material: 316 Stainless steel housing for UMR14 sensors
• Mount Options: m30x1.5 metric thread or 1-in NPT thread (part number suffixes -30MM and -1NPT)
• Dimensions: 1.2 in. (30.4mm) dia x 4.064 in. (103mm) length

Electrical & Communication Interfaces

• Power Supply: 10-30 VDC @ 55 mA max; typical 45 mA @ 24VDC input +I/O; serial-only models draw typical 35 mA @ 24VDC
• Analog Outputs (OmegaVIEW selectable):
  • 0-10 VDC voltage (or custom, OmegaVIEW configured), 10 mA max; requires min 15 VDC input for full 10 VDC output
  • 4-20 mA sourcing current loop (or OmegaVIEW configured 0-20 mA custom)
• Solid State Switches: 150 mA, PNP (@ input voltage) or NPN (external 40 VDC max.), configurable as setpoint mode or window mode
• Serial Interface Options:
  • RS-232 (PC COM port)
  • RS-485: 2-wire multi-drop addressable (addresses 1-247), Baud rates 9600 - 115200, none or even parity, 8 bits, one stop bit
• Cabling: Embedded 6.5-ft (2m) shielded PUR cable with tinned ends; 6-wire for full outputs, 4-wire for serial-only models. M12 connector on 18 in. cable available.

Configuration & Accessories

Sensors are configured using OmegaVIEW software (free download) or the TEACH pushbutton. PC interface kits include KIT-USB-232 and KIT-USB-485 with converter, terminal block, power supply, and data cable. Mounting accessories include MB30-SS90 stainless steel 90-degree mounting bracket and NUT30-SS316 one pair (SS316) stainless steel m30x1.5 nuts.

Key Product Differences

The UMR14 Series is distinguished within the Omega U-Series by its specific range envelope of 14 ft. (4.3 m). While other series members offer different ranges—USR03 at 3 ft, ULR30 at 30 ft, and UXLR50 at 50 ft—the UMR14 maintains a transducer frequency of 120 kHz with a nominal beam width of ~12 degrees @ -3 dB.

• Model Number Structure: [PRODUCT]-[MOUNT]-[SERIAL INTERFACE]. For example, UMR14-1NPT-232 indicates the 14 ft range sensor with 1-in NPT thread and RS-232 interface; UMR14-30MM-485 indicates m30x1.5 metric mount with RS-485.
• Output Configuration: Full-output models provide two outputs selectable via OmegaVIEW (voltage, current loop, or switches). Serial-only versions are available but lack analog/switch outputs on the embedded cable wires designated for those functions.

Note: Output selection is made before connecting to equipment and is not affected by a TEACH 17 reset. A power supply voltage between 15-30 VDC is recommended; target sensitivity and maximum voltage output value are reduced at voltages below 15 VDC.