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Technical FAQ's

Can I use a GL-CO-SRS sensor as a standalone device?

No, you must use this range of sensors with the GL-CO-RFG range of controllers.

What does the GS-AQ range actually detect?

The GS-AQ range detects Volatile Organic Compounds, such like paint, perfume, cooking smells and oils.  It does NOT detect CO2, we have a specific sensor for this measurement.

Do you have a CO2 sensor with a relay output?

No, they are only active, but by using the IO-RMA adjustable relay module you can adjust the relay on/off points to suit your switching levels.

Can you supply ATEX rated sensors?

No sorry, none of Sontay’s products are suitable for ATEX rated applications.

I need to convert 0-10Vdc to 4-20ma?

The IO-ARM will do this for you, with many other signal conversions for example 0-10Vdc to 10-0Vdc, 4-20mA to 0-10Vdc etc..

Can I use both VFC & 24Vac input on an IO-DIM4?


Can the LS-FL range be used in an oil tank?

No, the standard product cannot be used, contact Sales Support who can quote you using a Teflon type cable which is suitable.

Why should I use a flow sensor and not a water meter for monitoring the flow rate of my LTHW system?

The bearings on a flow sensor and other materials are of special construction to allow for continuous use.  Water meters are only intended for non-continous  flow.

Should I mount the flow sensor in the flow or return?

The default location of the flow sensor is the return, if mounted in the flow contact the sales team before ordering so that the calculator can be programmed correctly.

Do you have oil meters in your range of products?

Sorry, we only have gas and water meters.

I want to measure static air pressure in a duct.

Using the PA-65-x range with the optional –S static probe this is possible, alternatively you could use the standard device leaving the low open to atmosphere and connect the high to the duct using the DFK (Duct Fixing kit) supplied. 

What is the line of site distance of the SonNet RF range of products?

This is a very difficult question to answer, in free air it would be expected that they would transmit about 30 to 40 meters max.  The only way to see the signal strengths is to use the SSK (Site Survey Kit) and this will help to place routers if required where signal strengths are low.

How do I select the right thermistor?

Using our thermistor type and compatibility chart at www.sontay.com/support we have listed a large number of the BMS manufacturers with associated thermistor types, if in any doubt contact Technical Support and they can guide you.

I need a custom user interface.

Call or e-mail Technical Support and they can go through your requirements and arrange for a quote to be sent to you.

Do you do weatherproof covers for your valve actuator assemblies?

Yes we do the VE-PC range of cover will offer protection against rain and UV for units mounted outside.

Where do I mount the WD-CPS?

This goes on the underside of the chilled beam/pipework.

Can I use the WD-AMX range of products to detect an oil leak?

No, this will only work with water.

Can I use more than one cable or point sensor with a WD-AMX?

Yes you can, but it will only be a common alarm it will not know what cable/point sensor has detected the leak.  Your only limitation is that the total cable run including the sensor cable must not exceed 200 meters.