Water Level Meter supplied by Avans Tech

Monitoring Instruments

Water Level Meter

Name: Water Level Meter
Brand: Avans Tech

The GT-WLM series water level meter is a dip meter for measuring water depth in boreholes and standpipes. Eight tape lengths cover 0 to 30 m up to 0 to 500 m, all with 1.0 mm resolution and 2.0 mm repeatability, running on a DC 9 V supply. The head sounds a buzzer and lights up on contact with water so the depth can be read off the tape.

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ISO 9001:2015 production Samples available Small orders accepted

Product Overview

The GT-WLM series water level meter is a dip meter for measuring water depth in boreholes and standpipes. Eight tape lengths cover 0 to 30 m up to 0 to 500 m, all with 1.0 mm resolution and 2.0 mm repeatability, running on a DC 9 V supply. The head sounds a buzzer and lights up on contact with water so the depth can be read off the tape.

Materials

Marked measuring tape with sensing head on a reel

Key Benefits

Eight depth ranges from 30 m to 500 m so one supplier covers shallow standpipes and deep wells
Resolution 1.0 mm with repeatability 2.0 mm
Buzzer and light on water contact make readings clear on a noisy site
Simple DC 9 V power with no site infrastructure
Unit weight from 4.5 kg to 15 kg by range, so short-range reels stay portable

Application Scenarios And Who It Is For

Application Scenarios

Groundwater level checks in monitoring wells
Standpipe piezometer readings
Dewatering monitoring during excavation
Well depth and water strike checks during drilling

Who It Is For

Site investigation and drilling contractors
Groundwater monitoring teams
Dewatering contractors on deep excavations
Water resource and environmental consultants

Problems It Solves

Depth readings that cannot be repeated between operators
No reliable indication of the exact moment of water contact
Carrying several instruments to cover shallow and deep holes
Battery and charging logistics on remote sites

Technical Features

Models WLM-30 WLM-50 WLM-100 WLM-150 WLM-200 WLM-300 WLM-400 WLM-500
Measuring depth 0 to 30 m up to 0 to 500 m by model
Resolution 1.0 mm on all models
Repeatability 2.0 mm on all models
Power supply DC 9 V
Weight 4.5 kg to 15 kg by model

Specifications

Values below are taken from our published product data. Our tables note that figures are general averages for reference and that actual data should be confirmed by testing within the applicable scope.

Models	WLM-30 WLM-50 WLM-100 WLM-150 WLM-200 WLM-300 WLM-400 WLM-500
Measure Depth	0 to 30, 50, 100, 150, 200, 300, 400 and 500 m by model
Resolution	1.0 mm
Repeatability	2.0 mm
Power Supply	DC 9 V
Weight	4.5 5.5 6.5 7.5 8.5 10 12 15 kg by model

Quality Control

Tape marking checked against the stated measuring depth
Buzzer and indicator light function tested
Repeatability checked against the 2.0 mm figure
Reel and cable assembly checked before packing

Customization Options

Tape length selected from the eight models
Spare heads and tapes on request

Comparison With Other Products

Compared With	Why This Product
Vibrating Wire Piezometer	The dip meter gives a manual reading on demand, the piezometer logs pressure continuously at a fixed depth
Untimed bailer checks	The sensing head marks the water surface at a repeatable point rather than by estimation

Use Guide

Lower the head slowly into the hole and watch for the buzzer and light
When the buzzer sounds and the light comes on, release the cable slowly to find the exact depth
Read the depth at a fixed reference point on the casing top
Practice the technique consistently, since reading accuracy depends on judging the contact point

Questions Buyers Ask

Water Level Meter FAQ

What depths can be measured

Eight models cover 0 to 30 m through to 0 to 500 m.

How precise is the reading

Resolution is 1.0 mm with repeatability of 2.0 mm. In practice the accuracy depends on how consistently the operator judges the buzzer and light point.

How is the meter powered

DC 9 V.

How heavy is the reel

From 4.5 kg on the WLM-30 up to 15 kg on the WLM-500.

Can the tape be replaced if damaged

Spare tapes and heads can be quoted. Send your model number on WhatsApp.

Which model suits a 120 m monitoring well

WLM-150, which covers 0 to 150 m with margin over the well depth.

Monitoring Instruments