Posted in | Ultrasonic Sensor

Ultrasonic Level Sensors Suitable for Diesel Fuel and Other Chemicals

Senix’s compact and rugged ultrasonic level sensors are resistant to deterioration caused by chemical exposure in chemical tanks. The sensors are designed to measure a wide range of liquids, from chemical tanks in the food processing and paper industries, to diesel fuel in rail locomotives (not suitable for high-temperature CIP operations).

Heavy-duty electronics are epoxy potted into a housing made of polyvinylidene fluoride (PVDF) that physically separates the electronics and transducer from the chemicals, and can endure exposure to both bases and acids.

The ultrasonic level sensors are suitable for both indoor and outdoor applications, and in some of the most aggressive factory settings. These instruments are also employed in liquid-level applications that do not require resistance to chemicals.

Product Line Features

  • User-adjustable with SenixVIEW software (included) through which the sensors can be set up, tested, and cloned
  • Operating temperature ranges between –40 °C and 70 °C
  • Ideal for use in diesel fuel as well as chemical level applications in open or closed tanks
  • Ingress: IP68, NEMA-4X, and NEMA-6P

ToughSonic® CHEM 10

  • Maximum/optimum range—10 ft (3 m)/80″ (2 m)
  • Body and transducer—PVDF (Kynar®), beam width 12 +/− 2°
  • Top threads—1″ NPT, tapered
  • Bottom threads—1.5″, fits BSP or NPT (threads not tapered)
  • Dimensions (D x L)—3.05 x 5.62″ (77 x 143 mm)
  • Simultaneous outputs—5 plus serial data; voltage, 2 current, and 2 switches
  • Adjustment—SenixVIEW PC software
  • Cable—6.5 ft (2 m) pigtail, 9-wire + drain
  • Cable, serial data-only models—6.5 ft (2 m) pigtail, 4-wire + drain, dual twisted pairs

ToughSonic® CHEM 20

  • Maximum/optimum range—20 ft (6.1 m)/13″ (4 m)
  • Body and transducer—PVDF (Kynar®), beam width 14 +/– 2°
  • Top threads—1″ NPT, tapered
  • Bottom threads—1.5″, fits BSP or NPT (threads not tapered)
  • Dimensions (D x L)—3.05 x 5.62″ (77 x 143 mm)
  • Simultaneous outputs—5 plus serial data; voltage, 2 current, and 2 switches
  • Adjustment—SenixVIEW PC software
  • Cable—6.5 ft (2 m) pigtail, 9-wire + drain
  • Cable, serial data-only models—6.5 ft (2 m) pigtail, 4-wire + drain, dual twisted pairs

ToughSonic® CHEM 35

  • Maximum/optimum range—35 ft (10.7 m)/25″ (7.6 m)
  • Body and transducer—PVDF (Kynar®), beam width 10 +/– 2°
  • Top threads—1″ NPT, tapered
  • Bottom threads—2″, fits BSP or NPT (threads not tapered)
  • Dimensions (D x L)—3.05 x 5.62″ (77 x 143 mm)
  • Simultaneous outputs—5 plus serial data; voltage, 2 current, and 2 switches
  • Adjustment—SenixVIEW PC software
  • Cable—6.5 ft (2 m) pigtail, 9-wire + drain
  • Cable, serial data-only models—6.5 ft (2 m) pigtail, 4-wire + drain, dual twisted pairs

Smart Communications

The entire range of CHEM sensors from Senix comprises serial data communications to link with SenixVIEW software or any other equipment.

Models are available with either an RS-485 or RS-232 interface, with the communications format given below:

  • Baud rates range from 9600 (default) to 115200 bps
  • ASCII streaming protocols or selectable Modbus (default)
  • This and more can be adjusted using the SenixVIEW software

Senix recommends the RS-485 Serial Data Interface unless users want to connect to an RS-232 device. The advantages of RS-485 over RS-232 are given below:

  • Enables longer cable lengths at higher baud rates
  • Improved noise immunity in industrial settings
  • Multi-drop Modbus addressing allows networks of around 32 sensors
  • Bottom line: more potential at the same price

For users who need only a serial data interface, all sensor models are supplied without the analog and switch outputs, at reduced power consumption and lower cost. Instead of the regular 9-wire cable, users can utilize a 4-wire dual twisted pair (plus drain) data cable.

Smart Interfaces

Multiple concurrent outputs enable the ultrasonic level sensors to connect with virtually any kind of equipment.

  • Two switches: Each switch can be configured as Sourcing (PNP) or Sinking (NPN)
  • Analog voltage (0–10 V DC) is often utilized with motor drives and analogous equipment
  • Two analog 4–20 mA current loops (sourcing and sinking) for process industry transmitter applications

Ultimate Flexibility

All sensor outputs are SenixVIEW configurable by users.

  • All switches and analogs have response settings for loss of target echo (delay and state), power-on initialization, and SYNC lost
  • Switches have time delays (on, off, and no target) and hysteresis and window modes
  • Analogs can be calibrated between any two distances, no-target time delay, adjustable analog limits, and positive or negative slope

Connected Data

Multiple concurrent outputs enable the ultrasonic level sensors to connect with virtually any kind of equipment.

  • All outputs are SenixVIEW configurable
  • Two switches: Each switch can be configured as Sourcing (PNP) or Sinking (NPN)
  • Serial data communications (RS-485 or RS-232; users can select by model)
  • Analog 0–10 V DC, 4–20 mA sourcing, and 4–20 mA sinking

Wireless Connectivity

  • Lower cost and reduced power dissipation
  • RS-485 models can be connected with Senix LoRa wireless transmitters

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