H2S Data Logger

GASTEC H2S Data Logger GHS-8AT-EX Front View

GASTEC H2S Data Logger GHS-8AT-EX

Accurate. Continuous. Built to Last.

Monitoring hydrogen sulphide (H2S) in sewer systems and wastewater networks is critical for corrosion prevention and worker safety. The GASTEC GHS-8AT-EX provides continuous, unattended 24/7 logging with high precision and extreme field resilience.

0 - 3000PPM Range
3Months Battery Life
45,960Data Points Logged
IP66/67Water & Dust Rated

Compact & Lightweight

Only 390g, easy to carry into sewers and confined spaces.

Continuous H2S Monitoring

Tracks hydrogen sulphide levels around the clock, not just a single reading.

Digital Display

Shows live concentration, temperature, and battery status at a glance.

Fast Response Time

Detects rising H2S levels early, before conditions become dangerous.

ATEX Certified & IP66/67 Rated

Built for hazardous sewer environments, water and dust resistant.

USB Data Transfer

Download up to 31 days of logged data straight to a PC.

Simple to Use. Built to Monitor.

01

Instant Status Check

View H2S concentration, temperature, and battery life on one display.

02

Smart Power Control

Set custom recording windows to conserve battery during long deployments.

03

Rugged & Portable

Compact housing, easy to remove and replace in the field.

GASTEC GHS-8AT-EX H2S Data Logger
04

IP66/67 Water Resistant

Built to withstand sewer conditions, even designed to float.

05

31 Days of Logged Data

Captures a full month of readings at 1-minute intervals.

06

USB Data Export

Transfer logs to a PC for graphs and reports in seconds.

Sewer Systems

Continuous monitoring of manholes and pipelines where H2S causes corrosion.

Wastewater Treatment

Tracks H2S buildup in treatment tanks and sludge processing areas.

Oil & Gas Facilities

Monitors H2S at wellheads, storage tanks, and processing units.

Petrochemical Plants

Detects H2S released during refining and chemical processing.

Marine & Shipping

Checks cargo holds and ballast tanks for H2S buildup during transit.

Confined Space Entry

Verifies safe H2S levels before workers enter tanks, pits, or tunnels.

The Specs Speak for Themselves

Real performance numbers from the GASTEC GHS-8AT-EX, tested and certified for continuous H2S monitoring in demanding environments.

Did you know?

45,960

data points logged, up to 31 days of continuous monitoring

Did you know?

3,000 PPM

maximum H2S concentration this logger can detect

Did you know?

IP66/67

rated, built to withstand sewer conditions and even float on water

The Specifications

Every detail behind the GASTEC GHS-8AT-EX, tested and certified for continuous H2S monitoring in demanding environments.

Specification ParameterDetails
Target GasHydrogen Sulphide (H2S)
Measurement Range0 to 3,000 ppm
Accuracy±5% of full scale
DisplayLCD, concentration, temperature, battery, time
Battery Life3 months (2 x AA alkaline)
Backup Battery5 years (retains data without main power)
Data Logging Capacity45,960 sets, up to 31 days at 1-min intervals
Sampling Intervals1, 5, 10, 15, 30, or 60 minutes
Water & Dust RatingIP66/67
Operating Temperature0 to 40°C
Weight390g
CommunicationUSB 2.0
CertificationATEX, IECEx, RoHS, EMC compliant

Frequently Asked Questions

The GHS-8AT-EX is designed specifically to detect hydrogen sulphide (H2S), measuring concentrations from 0 to 3,000 ppm depending on the sensor installed. It is not a multi-gas device, it is built for continuous, accurate H2S monitoring alone.
On two AA alkaline batteries, the GHS-8AT-EX runs for approximately 3 months of continuous monitoring. A separate backup lithium battery retains logged data for up to 5 years, even if the main batteries are removed or run out.
Yes. The device is IP66/67 rated for water and dust resistance, and is specifically designed to withstand harsh sewer and wastewater conditions. It's built to float on water and can be safely deployed in manholes, pipelines, and treatment tanks.
The GHS-8AT-EX connects to a PC via USB, and dedicated ANASYS software lets you view the data as a graph or export it as a text file. At 1-minute logging intervals, it can store up to 31 days of continuous readings.
Yes, the GHS-8AT-EX is ATEX and IECEx certified for use in potentially explosive and hazardous industrial environments, making it safe for continuous sewer and petrochemical deployment.