The 70987TE is now obsolete.
Your instrument will require a one time conversion kit.
SERIES 2000 CONTROLLER
If you have a WDG-IVCM or HPIICM (RTD) the conversion kit will be 7002-438-TE.
If you have a WDG-IVCM or a HPIICM (Hot-wire) the conversion kit will be 7002-437-TE.
STANDARD IQ
If you have a WDG-IVCM or HPIICM (RTD) the conversion kit will be 7002-441-TE.
If you have a WDG-IVCM or a HPIICM (Hot-wire) the conversion kit will be 7002-440-TE.
After the upgrade is made, the new replacement detector kit which repalces the 70987TE is part number 7002-425-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)