Page 1 LUDLUM MODEL 43-93 AND MODEL 43-93-2 ALPHA/BETA SCINTILLATORS March 2016.; Page 2 LUDLUM MODEL 43-93 AND MODEL 43-93-2 ALPHA/BETA SCINTILLATORS March 2016.; Page 3 RETURN OF GOODS TO MANUFACTURER If equipment needs to be returned to Ludlum Measurements, Inc. for repair or calibration, please send to the address below. All shipments should include documentation containing return.. A Ludlum, Model 43-5, alpha-survey detector using a zinc-sulphide scintillation crystal doped with silver as the main detector. The crystal is coupled to a 3.8 cm diameter (nominal 1.5 inch) magnetically-shielded photomultiplier tube. The probe has an overall length of 37 cm and the probe has an active area of 76 square cm.
* Ludlum Model 43-5 Detector, or equivalent 5.0 PROCED)URE 5.1 Preoperational Checks 5.1.1 Turn the instrument on and perform a battery check or verify that the power is on. Replace batteries (or charge battery as appropriate) if necessary. 5.1.2 Adjust the audible volume so that the alplia and betalgaimia clicks can be easily heard.. Ludlum Measurements, Inc. is a designer and manufacturer of radiation detection equipment developed to help monitor the safety of personnel and the environment.. Model 43-202 ZnS(Ag) Scintillator. 17.8 cm 2 (2.8 in 2) 239 Pu : 18%. Model 43-5 ZnS(Ag) Scintillator. 76 cm 2 (11.9 in 2) 239 Pu : 13%. Model 43-65