The EchoTREK Series Ultrasonic Level Transmitter for Liquids are high performance level transmitters for liquid level measurement in sumps or tanks, for tank contents measurement, or open channel flow measurement. Installed on the tank roof or above the liquid surface to be measured, these transmitters give analog output proportional to liquid level or transmit HART digital data. The EchoTREK Series are intelligent, compact ultrasonic level transmitters with 4 – 20 mA output and HART protocol communication. Local reading is ensured by a plug-in display which can be removed if displaying is not needed. Four keys provide for programming, both display and keys are located under a removable cover. The unit is tank-top mountable only.
The ultrasonic level metering technology is based on the principle of measuring the time required for the ultrasound pulses to cover the distance from the sensor to the level to be measured and back. The echoes bounced back from the surface of the medium to be measured reach the sensor surface after the time of flight of the ultrasonic impulse. The time of flight of the reflected signal is measured and processed by the electronics, and then this is converted to distance, level, volume or flow proportional data with the help of the customizable tank dimensions or the pre-programmed flume / weir parameters. The intelligent QUEST+ process adaptive signal processing software system ensures that the electronics identifies and validates the liquid surface signal, giving reliable level monitoring.
The EchoTREK Series can be used in multi-drop systems connected to MultiCONT process controller and display, or to a PC with the help of the UNICOMM HART USB and RS485 modem or similar. The EchoTREK Series is available with measurement ranges up to 82 feet, providing wide application possibilities. These ultrasonic level transmitters are use SenSonic range transducers with a full beam angle of 5 to 7 degrees connected to intelligent electronics featuring the QUEST+ advanced signal processing algorithm.
The instruments with HART output can be connected to a PC using a UNICOMM SAK-305 HART-USB modem. All measured values of the EchoTREK ultrasonic level transmitters can be visualized and/or the instruments can be remotely programmed via digital HART communication. Applicable software for PC: EView2 configuration software or NIVISION process visualization software. The level sensors with HART output can be connected to a PC via Bluetooth wireless connection using a UNICOMM HART- USB-Bluetooth modem (SAT-504). Power supply can be provided for the system with a USB power bank connected to the UNICOMM modem.
The MultiCONT multichannel process controller processes and displays measurement data supplied by HART equipped transmitters connected to a Multidrop loop. The transmitters (also mixed models) can be connected and remote programming can be also performed through theMultiCONT. Re-transmission of the data is possible via RS485 communication line to a PC or PLC when needed. The visualisation of the data can be done by NIVISION process visualization software. With the help of MultiCONT, different useful functions can be achieved such as configuring and optimizing the measurement or displaying the special echo map of the process environment.
With the help of the SAP-200 plug-in display a full-parameter programming can be accomplished, the parameters of measurement and output can be set using the alphanumeric display module. The large LCD display displays the measured values in numerical and bar graph form. The display features indication for the infrared communication (IrDA) port which provides possibility for logger readout, diagnostics and software upgrade.
The MultiCONT multichannel process controller and display unit is able to visualize the Echo Map. The Echo Map feature helps to detect false reflections and aids the optimization of the measurement configuration.
| Supply voltage | 2-wire: 12…36 V DC 4-wire: 85…255 V AC, 20…28 V AC/DC |
|---|---|
| Ambient temperature | −22…158°F |
| Process temperature | −22…212°F |
| Process pressure | (absolute): 7.5…43.5 psig |
| Measuring range | 0.65…82 feet |
| Output | 4…20 mA, HART, relay |
| Process connection | 1½”, 2″ BSP / NPT, flange |
| Ingress protection | IP67 |
| Approvals | ATEX, INMETRO, UKCA Ex |
| EchoTREK | ||
|---|---|---|
| SE/SG-300 | ST/SB-400 | |
| System | 2-wire | 4-wire |
| Accuracy(1) | ± (0.2% of measured distance +0.05% of range) | |
| Resolution | Depending on the measured distance: <6.5 ft: 0.04 in, 6.5–16.5 ft: 0.075 in, 16.5–33 ft: 0.2 in, >33 ft: 0.4 in |
|
| Analog | 4 – 20 mA | |
| Relay(2) | #1 SPDT, 250 V AC, 3 A AC1 #2 SPDT, 30 V DC, 1 A DC |
|
| Display | SAP-200: 6-digit plug-in LCD display | |
| Digital Communication | HART | |
| Ambient temperature | With plastic housing: -13°F…158°F, with metal housing: -22°F…158°F, with display: -13°F…158°F |
|
| Pressure (absolute) | (3)0.5 – 3 bar (7.5 – 43.5 psig), with stainless steel transducer: 0.9 – 1.1 bar (13 – 16 psig) |
|
| Power supply | 12(4) – 36 V DC / 48 – 720 mW | 85 – 255 V AC / 2 VA 20 – 28 V AC/DC / 3 VA / 3 W |
| Electrical protection | In case of DC power supply: Class III | |
| – | In case of AC power supply: with metal housing: Class I with plastic housing: Class II |
|
| Housing | Plastic (PBT), paint coated aluminum or stainless steel | Plastic (PBT), paint coated aluminum |
| Sealing | In case of PP transducer: EPDM; all the other transducers: FPM (Viton) | |
| Electrical connection | 2x M20x1.5 cable glands + internal thread for 2x 1⁄2″ NPT cable protective pipe, cable outer diameter: Ø0.25 – 0.45 inch, wire cross section: maximum 1.5 mm2 (AWG15) |
|
| Ingress protection | Transducer: IP68, Housing: IP67 | |
| Explosion protection | See: “Ex Certified” table below | None |
| Mass | 2.85 – 5 lb | |
(1) under optimum conditions and stabilized transducer temperature
(2) 4-wire EchoTREK transmitters have two parallel operating relays
(3) for pressure less than 0.5 bar (14.5 psig) please send us an inquiry
(4) only partial operation is provided, reliable operation without any restrictions is guaranteed at >13.4 V terminal voltage
| EchoTREK SP-300 | |
|---|---|
| Protection type | Intrinsically safe |
| Ex marking (ATEX) | II 1 G Ex ia IIB T6…T4 Ga |
| Intrinsically safe data | Ci ≤ 15 nF, Li ≤ 200 μH, Ui ≤ 30 V, Ii ≤ 140 mA, Pi ≤ 1 W |
| Ambient temperature | With plastic housing: -4°F…158°F; with metal housing: -22°F…158°F; with display: -13°F…158°F |
| Process temperature | With PP transducer: -4°F…158°F; with PVDF transducer: -4°F…176°F; with PTFE transducer: -22°F…194°F with stainless steel transducer: -22°F…212°F |
| Electrical connection | 2x M20x1.5 metal cable glands |
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