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IN-LLT-C

The Intech IN-LLT-C hydrostatic level transmitter is a fully sealed submersible pressure instrument, designed for liquid level measurement.

Custom Built LLT

The Custom Built LLT is a media compatible level transmitter specifically designed for continuous liquid level monitoring.

LPN-OVP - Overload Protection Unit:

Product Specifications:

Download Installation Guide

LPN-OVP-E (IP67 Enclosure)

Description:

The LPN-OVP is reliable and effective in protecting process control equipment against transients induced between the signal lines and instrument earth through lightning strikes or from other sources.

The circuit design is simple but very effective. Gas discharge tubes provide first stage protection, and can discharge up to 5000A when exposed to an 8 x 20msec waveform. Transient voltage suppressors provide the second stage protection, and typically operate within 5nsec, and can discharge 600W when exposed to a 10 x 1000msec waveform.

For maximum protection an LPN-OVP should be used at each end of a field cable to protect process control equipment at both ends.

We strongly recommend using the LPN-OVP with our IN-LLT-C or the Custom built IN-LLT if long runs of cable are involved in the installation; to protect against potential Lightning strike or earth potential rises.
Note that the JUMO 4390 & 4391 have integrated OVP protection in their probe. For best possible protection in Lightning prone areas, we strongly recommend using OVP protection at both ends of the installation. The LPN-OVP is ideal for this purpose at the termination end of the installation.

Ordering Information:

Specifications:

Note 1. Each LPN-OVP adds a total of 28Ω to the loop. Two units are recommended for each installation. Eg: 2 units = 2 x 28Ω = 56Ω total loop resistance.
Note 2. Do NOT ground the Signal. Only use the GROUND terminals provided on the LPN-OVP.