MJK Expert 700 Hydrostatic Level Transmitter

The Expert 700 is a compact hydrostatic level transmitter designed to deliver dependable level data in demanding installations. It combines a piezoresistive relative-pressure measuring principle with direct air-pressure and temperature compensation, plus built-in surge protection for reliable long-term performance.

• Overview

  The Expert 700 Hydrostatic Level Transmitter is engineered for stable, repeatable level measurement in water applications where reliability matters most, such as wells, groundwater boreholes, and process water systems. Built with 316L stainless steel construction and a small 16 mm external diameter (0.63 inch), it’s designed to deploy easily in tight spaces while standing up to harsh conditions.

  Key Benefits:

  • Flexible communications - 2-wire 4–20 mA loop powered output capability.
  • Built for tough installs - IP68 enclosure rating and robust surge protection for field deployments.
  • Stable measurement over time - Designed for strong accuracy and long-term stability in real-world water environments.

  Applications

  Water wells & groundwater boreholes
  Provides stable hydrostatic level measurement in narrow well casings and boreholes where long-term reliability matters.

  Process & drinking water
  Supports continuous level monitoring in process and potable water systems to help operators maintain control, capacity, and compliance.

  In-fill sites
  Enables level tracking in temporary or remote monitoring points where rugged construction and stable output simplify field deployment.

  Available Configuration:

  MJK203817 – 0-100 m range, with 110 m cable

  MJK Expert Selection Guide

  Choose Expert 700 when…

  • You’re installing in a tight well or narrow borehole, and physical size is your top constraint.
  • You still want dependable level readings in a compact package.

  Choose Expert 1100 when…

  • You need reliable level monitoring for wells or drinking water tanks.
  • You want a proven solution for storage, alarms, pump control, and trending in water applications.
  • You need higher accuracy than the Expert 700 series

  Choose Expert 1400 when…

  • You need higher accuracy than the Expert 1100 and better long-term measurement performance.
  • Your site has more demanding requirements.

  Choose Expert 2100 when…

  • You want the best “default” option for municipal pump stations, wet wells, and storage tanks.
  • You’re looking for a rugged, low-fuss transmitter designed for real wastewater conditions.

  Choose Expert 3400 (or 3400 ATEX) when…

  • You need higher accuracy than the Expert 2100
  • You’re in the harshest wastewater environments: ragging-prone wet wells, industrial sumps, or applications involving aggressive fluids.
  • You need a model family with hazardous-area / ATEX versions available.

• Specifications

  MJK Expert 700 Hydrostatic Level Transmitter
  Measuring principle	Piezoresistive (relative pressure)
  Nominal measuring ranges	0–100 m
  Accuracy	Better than ±0.5% FS (10°C to 30°C)
  Linearity/stability	Better than ±0.5% FS / ±0.1% FS
  Long-term stability	Better than ±0.5% FS per year
  Temperature range	-20°C to 50°C (-4°F to 122°F)
  Output/power	2-wire 4–20 mA loop powered (10–30 VDC)
  Wetted Materials	Stainless Steel 316L (DIN 1.4435) / Viton® / PE
  Ingress protection	IP68
  External diameter	16 mm (.63 inch)
  Weight (without cable)	0.2 kg (.44 Lbs)
  Approvals	CE Conformity EN61000-6-1 to -6