How to Add a Non-EP Transmitter to a Standard Alloy SureSite

The below information will help explain how to add a non-explosion proof (standard) transmitter to a Standard Alloy SureSite that didn’t have one when originally built at Gems. 


SureSite transmitters are clamped onto the stainless-steel housing so it is a simple install. However, it is important to specify and order the correct transmitter, so it matches your existing SureSite correctly and indicates properly. Standard transmitters must be installed 90 degrees from the flag assembly. If it is not within this orientation the reed switches within the transmitter may not close. See the below image for further detail.




First step is to determine your indication length, as this will dictate the transmitters length and p/n. For ‘BA’ style Side-Side mounted units, it is the center to center dimension between those two side connections.  For other configurations you can measure the flag assembly and subtract 2” from this dimension, as we typically build the flag assemblies an inch longer on either end.  


The distance between these two marks in inches will dictate how long we make the transmitter and the complete p/n. For example, if your measurement is 36”, the p/n will be 85875-036. This will include the 36” long transmitter with 24” cable length.  This will be a proportional voltage transmitter, such that if you input 12VDC, you will receive a 0-12 VDC output.  For example, 0 VDC when the float is at the bottom and 12 VDC when the float is at the top.   


If you want a 4-20mA output, you can order the junction box kit, p/n 86158 which will include the junction box and 4-20mA signal conditioner. You will need to mount this somewhere near the SureSite.

If you require a longer length from the transmitter, the p/n would be 85875-036-XX, where ‘XX’ is length in inches. 


After receiving your transmitter, you will clamp it onto the housing and line the indication marks (blue and red) with your flag assembly indication points.  The blue indicates the bottom portion of the indicating level, and the red marks where the indication level stops. ‘X’ shows the indication length below.




Once you have determined your p/n please contact Gems for pricing and availability.