1. Single instrument composition:
Electromagnetic flaw detector (including up and down centralizer) 1.
Special removal tools 1 set.
10 sets of sealing ring
The centralizer shrapnel 1 set.
Ii. Technical indicators and requirements:
* cable requirements: single core cable.
* outside diameter: no greater than Φ 43 mm;
* instrument length: no more than 3450mm (including upper and lower centralizer)
* the highest heat resistance: not less than 175 ℃; (175 ℃ under continuous trouble-free not less than two hours)
* maximum pressure: not less than 80Mpa;
* maximum speed: no less than 350 m/h;
* measurement range:
* the maximum diameter of the tested pipe column: 324mm.
* minimum diameter of test string: 62mm.
* maximum thickness of single pipe wall: 16mm.
* maximum thickness of double pipe wall: 25mm.
* pipe wall thickness measurement accuracy: single-layer pipe column:
Double tubing string: 1.5mm.
The minimum length: 2.5 "single-layer pipe column: 50mm.
5 "single-layer string: 70mm.
5 "double-layer string: 150mm.
The minimum length: 2.5 "single-layer pipe column: 50mm.
5 "single-layer string: 100mm.
* temperature index:
Measuring range: 0-1750c.
Temperature measuring accuracy: ≦ 10 С
Temperature resolution: 0.010c.
* natural gamma indicator:
Dynamic range :0 ~ 10000CPS.
Resolution: 1CPS.
Natural background: more than 60CPS.
Statistical fluctuation: no more than 7%.

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