The XMTK-9000 has the following technical specifications:
You will need a precision voltage calibrator (e.g., Fluke 725). xmtk-9000 user manual
The XMTK-9000 features an intuitive digital interface paired with tactile mechanical overrides for precision adjustments. xmtk-9000 user manual
Connect the control output to the heating element relay (SSR or mechanical relay). xmtk-9000 user manual
Check external sensor wiring. Measure loop current with an inline multimeter. 0x402 Signal Over-range Input voltage/current exceeds upper safety limit.