Technical data: STG-B & STG-F-LEAKDETECTOR

The STG sensor has the function of detecting any leakage or opening of the safety valves in industrial refrigeration systems, operating with any type of refrigerant gas.

When the warning or alarm value of the presence of refrigerant gas is exceeded (Threshold values ​​set by the user), the device will signal the alarm to the controller and activate a visual signal locally. Furthermore, through the MODBUS protocol it is possible to view values ​​such as% Gas Presence,% Alert Gas Presence and Alarm Gas Presence% and set the relative thresholds.

Available in 2 different versions:
STG-B-LEAKDETECTOR: Equipped with a relay with three contacts (C-NO), a Modbus RS-485 protocol and powered by 24 V DC.

STG-F-LEAKDETECTOR: Equipped with a relay with three contacts (C-NO), a Modbus RS-485 protocol, two analogue outputs 0-10V and 4-20 mA and powered in 24 V DC.

In addition, both versions will be equipped with a local visual alarm signal that also allows the display of the status in real time.
By means of the 1 ”threaded connection with which it is equipped, the STG sensor can be easily installed on a pipe leaving one or more safety valves present in the system. It can be used in stand-alone applications or connected through the analogue, digital outputs, or through the RS485 Modbus serial link, to a control system (electronic controllers, PLC or third-party devices) capable of carrying out any alarm procedures.

Delivered without a cable but with a plug. Find the specifications for the plug under the tab Specifications.

Benefits:
This device offers the possibility to intervene promptly in the event of opening or leakage of one or more safety valves, in order to avoid the dispersion of refrigerant gas into the environment, any downtime and to contribute to the guarantee of greater safety for the people who work. nearby.

This is a summarized version of our official return and warranty policy. For full legal terms and process details, please download the complete PDF:

📄 Download Full Product Return & Warranty Policy (PDF)

1. General

• This policy supplements our General Terms and Conditions (ORGALIME S2012 with HB amendments).
• Only products purchased directly from HB Products A/S are covered by this policy.

2. Product Returns & Exchanges (non-warranty)

• Standard (non-customised) products may be returned within 3 months of invoice if unused, resaleable, and approved by HB Products A/S.
• Customized or private-labeled products are non-returnable unless explicitly agreed.
• Returns are at the customer’s own expense and risk unless otherwise agreed in writing.
• Minimum net line value for return: EUR 50 (or equivalent in the order currency).
• A handling fee of up to 15% may apply. Order admin, freight admin, and shipping fees are not credited.

3. Warranty Claims

• Standard warranty: 12 months from commissioning or 18 months from invoice – whichever comes first.
• pH and gas sensors: 12 months from invoice only.
• Warranty covers faults from defective design, materials, or workmanship only.
• Not covered: misuse, incorrect installation, lack of maintenance, unauthorized modifications, etc.
• If a claim is rejected, HB Products A/S may charge a reasonable inspection and handling fee and return the product at the customer's expense and risk.

4. Warranty Claim Process (RMA required)

• Customers must obtain a Return Material Authorisation (RMA) number before sending any product.
• To request an RMA, download and complete the form, then send it to: QA@hbproducts.dk
• Do not return any product without an assigned RMA number.
• RMA numbers are valid for 30 calendar days.

📄 Download RMA Form (PDF)

5. Liability

• HB Products A/S is not liable for indirect or consequential loss (e.g., loss of profit, production, or system damage).
• Liability is governed by our General Terms (ORGALIME S2012 with HB amendments).

We service you worldwide

HB Products is represented by a growing number of distributors all over the world. Our criteria for selecting business partners guarantees the customers professional and qualified consultancy and support - locally.

Overall we provide support and technical know-how in person, by phone, email, or video call. Our team of experts and partners are available assist you with any questions. concerns or issues you may have.

All our business partners are specialists within consultancy for components used in refrigeration systems. It is our intention, as well as the intention of our business partners, to keep a wide variety of sensors in stock; however, since these come in countless variants, we hope that you understand that they cannot all be kept in stock.

Enquiries must be sent directly to us at info@hbproduct.dk in the countries/regions where we do not yet have local business partners/distributors.

We are open between 08:00 and 16:00 every weekday except Friday, when we are open from 08:00 to 15:00. We are closed on the weekends. You can contact us by email or telephone

Contact info

Email: support@hbproducts.dk

Telephone: +45 87476200 #2