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JSQ-1 Water Quality Probe
PRODUCT PARAMETERS
Description
Abstract
AbstractJSQ-1 Water Quality Probe combines multi-parameter sensors and is equipped with 6 sensors to measure: pressure, temperature, conductivity, dissolved oxygen, pH and redox potential. The probe is specially designed for groundwater and environmental geological surveys. It uses reliable, accurate, drift-free high-quality sensors to record and continuously profile the fluid characteristics inside.
Applicable Conditions
● Cased
● Bare hole fill with water
Applications
● Groundwater survey
● Aquifer location determined
● Groundwater contamination research
● Water chemistry analysis
● Transgression research
● Water well monitoring
Features
● Complete the collection on site, greatly reducing the demand for water samples and avoiding data anomalies caused by secondary contamination
● Applicable to various types of groundwater sample detection in wells under high pressure and high temperature environments
Specifications
| Temperature measurement range | 0~75℃, Resolution: 0.025℃ |
| Temperature sensor | Platinum resistance (Pt1000) |
| Conductivity measurement range | 0~200Ωm,Resolution: 0.05Ωm |
| Electrode device | A 0.04 M 0.02 N 0.02 N,∞B |
| Dissolved oxygen measurement range | 0~50ppm |
| pH measurement range | 0~14pH |
| Oxidation-reduction potential measurement range | -1000~1000mV |
| Nitrate measurement range | 0~100mg/li |
| Signal output | Bipolar encoding |
FAQ
In gravity exploration (SI), what is the unit of gravity? How to convert gravity units between SI and CGS?
① In SI, it is m·s-2, and one percent of it is the international unit abbreviation g.u.;
② Conversion between SI and CGS: 1g.u.=10-1 mGal
What are gravitational field and gravitational potential?
Gravitational field: The space around the earth with gravity is called the gravitational field.
Gravitational potential: The gravitational potential W in the gravitational field is equal to the work done by a particle of unit mass moving from infinity to that point.
What is the normal gravity field of the earth? What are the rules for the change of the normal gravity field with latitude and altitude?
① The normal gravity field of the earth: Assuming that the earth is a rotating ellipsoid (reference plane), the surface is glossy, the internal density is uniform, or it is distributed in concentric layers, the density of each layer is uniform, and the deviation of the shape of the ellipsoid from the geoid is very small, then the gravity field generated by the earth is the normal gravity field.
② The normal gravity value is only related to the latitude, the smallest at the equator and the largest at the poles, with a difference of about 50,000 g.u.; the rate of change of the normal gravity value with latitude is the largest at 45° latitude, and zero at the equator and the poles; the normal gravity value decreases with increasing altitude, and its rate of change is -3.086 g.u.. The main feature of the long-term change is the "westward drift" of the geomagnetic elements, both the dipole field and the non-dipole field drift westward, and have a global nature.
What is the relationship between gravitational field strength and gravitational acceleration?
The gravitational field strength is equal to the gravitational acceleration in both numerical and dimensional terms, and the two are in the same direction. In gravity exploration, all references to gravity refer to gravitational acceleration. The gravitational field strength at a point in space is equal to the gravitational acceleration at that point.
What is gravity exploration?
Gravity exploration is an exploration method that is based on the density difference of rocks and ores. Since density difference will cause local changes in the normal gravity field of the earth (i.e. gravity anomaly), it is used to solve geological problems by observing and studying gravity anomalies.
