Submersible hydrostatic level meter
HLM-25S series
- Submersible hydrostatic level meter capable of continuous level measurement of normal water from 1 to 100 m
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Ideal for continuous level measurement of normal water in a long range of 1 to 100 m. Measures the continuous level of normal water (clean liquid such as tap water). Equipped with temperature compensation function and surge protection circuit..
■Two types, current output type and voltage output type, are available.
■Intrinsically safe models are also available.
There are two models, one for normal water (clean water such as tap water) and the other for sludge, drainage (slightly dirty water). HLM-25S is usually for water.
Features, keys |Usage, use examples |Standard specifications
Features, keys
- Can measurement continuous level measurement of water from 1 to 100 m
Normal water (clean liquid such as tap water) ⇒ HLM-25S type * Applications: Water such as non-pressure tanks, drill holes, wells, pool water, etc.Different liquids need to be set at the time of purchase. * Sludge water, drainage, etc. (slightly dirty water) ⇒ HLM-25C type
- No settings or adjustments required
No other settings or adjustments are required just by wiring. Easy to handle such as installation and maintenance. - With temperature correction function
Equipped with an accuracy correction function due to changes in water temperature. - With surge protection circuit
Protects against abnormally high voltage and abnormally large current caused by voltage polarity reversal and lightning. - Intrinsically safe type
Intrinsically safe type is also available for tanks with an explosive atmosphere.
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When the liquid density is constant, the pressure at the tip of the sensor is proportional to the water level. A signal is output from the relative pressure between this pressure and atmospheric pressure. |
Usages, use examples
- Normal water (clean liquid such as tap water) such as non-pressure tanks, drill holes, wells, pool water, etc.
Standard specifications
| Model name | HLM-25S-I(Current output type) | HLM-25S-U(Voltage output type) |
|---|---|---|
| Measurement range | 1 to 100m (specified at the time of ordering) | |
| Power source required | 12 to 36V | 16 to 30V |
| Current output | 4 to 20mA DC (maximum load 500Ω *1) | |
| Power consumption (When no load) | 4mA less than | Maximun 8mA |
| Allowable pressure load | 1.5 x measurement range | |
| Accuracy *2 | 0.5% F.S. (maximum 0.7 F.S.) | |
| Long-term stability | 0.3% per year | |
| Temperature error *2(0 to + 50 degree) | Max.0.04% per degree (Measurement range 1-5m) Max.0.03% per degree (Measurement range 5-10m) Max.0.02% per degree (Measurement range 10-100m) | |
| Operating temperature | 0 to + 50 degree | |
| Operating ambient temperature | -20 to + 70 degree | |
| Protection class | IP68 | |
| Materials | Probe: SUS303, Membrane: SUS316LSensor protection cap: HDPE, Cable coating: PE, Cable gland: Silicon | |
| Weight | Sensor: 190g, Cable: 60g per m | |
*1: The maximum load resistance of 500Ω in the current output specifications is the value when the power supply voltage is 24V.
*2: This accuracy and temperature error may vary depending on the object to be measured and the usage environment.
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