The 70986TE is now obsolete.
Your instrument will require a one time conversion kit.
SERIES 2000 CONTROLLER
If you have a WDG-IVC or HPIIC model, the conversion kit will be 7002-436-TE.
If you have a WDG-IVCM or a HPIICM model, the conversion kit will be 7002-437-TE.
STANDARD IQ
If you have a WDG-IVC or HPIIC model, the conversion kit will be 7002-439-TE.
If you have a WDG-IVCM or a HPIICM model, the conversion kit will be 7002-440-TE.
After the upgrade is made, the new replacement detector kit which repalces the 70986TE is part number 7002-424-TE.
If you need further clarification, please click on this link which will take you step-by-step to the replacement part you need: Replacement Part
Please feel free to contact our AMETEK PI service team with any questions here: Aftermarket (ametekpi.com)