JSQ-1 Water Quality Probe | Geotech Instrument Co., Ltd.

PRODUCT PARAMETERS

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

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Description

FAQ

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Description

Abstract

JSQ-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?

What are gravitational field and gravitational potential?

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?

What is gravity exploration?