EHT indicators show the measured value on an LED numeric display and present the relative level on an illuminated bar graph. The two displays help operators read a value and see the tank's level position at a glance.
The instrument processes an external measurement signal. A compatible liquid-level transmitter is required to measure the liquid and send the signal to the indicator. Select the transmitter separately for the tank, liquid, measuring range and installation conditions.
| Parameter | Specification |
|---|---|
| Series | EHT |
| Instrument function | Signal processing and liquid-level indication |
| Display | LED numeric display and illuminated bar graph |
| Accuracy class | ±0.5%FS; ±0.1%FS option |
| Input | Universal configurable input; match the selected signal configuration |
| Supply | 220VAC, 50Hz |
| Instrument depth | 90mm |
| Weight | 650g |
| Parameter retention | Settings retained after power loss |
| Parameter access | Password protection |
| Communications | Customized communication configurations available |
The indicator's accuracy class applies to its configured signal processing and display. Complete measurement-system performance also depends on the external transmitter and the selected measuring range.
| Setting group | Adjustment or selection |
|---|---|
| Input and range | Input signal type, measuring range and zero point |
| Measurement adjustment | Measured-value zero and gain adjustment |
| Alarm settings | Alarm mode selection |
| Output settings | Output mode and transmitter-output adjustment |
| Compensation | Digital cold-junction compensation with internal or external selection for applicable input types |
| Access and storage | Password-protected parameters with nonvolatile retention |
Set the input and display range to correspond to the transmitter's output and full-scale level. Choose the required alarm and output behavior for the monitoring system. Specify any communication option together with its interface and receiving-system requirements.
EHT indicators suit local tank monitoring, water and wastewater systems, industrial storage and process-control panels. Select the external transmitter for the liquid and installation, then match its electrical signal to the indicator's configured input.
Provide installation space for the 90mm instrument depth and verify the panel opening and terminal access against the supplied unit. Check scaling, alarm operation and retained settings during commissioning. The indicator is a panel instrument; submersible probe protection and wetted-material ratings belong to the separately selected transmitter.
