Model 133 Series Gamma Detector Unpacking

Questions and Answers

Where is the Model 133-4 serial number located?

On the packing list

On the side of the detector (correct)

On the top of the detector

On the calibration certificate

What should you do before returning an instrument or detector for repair or calibration?

Remove the calibration certificate

Provide sufficient packing material to prevent damage during shipment

Affix warning labels to promote careful handling

All of the above (correct)

Where can you find the Instrument Return Form?

In the detector's user manual

With the packing list

On the Ludlum website (correct)

On the detector's calibration certificate

What should you do with the calibration certificate or detector functional check certificate after unpacking?

Place it in a secure location Signup and view all the answers

Why is it essential to ensure all items listed on the packing list are in the carton?

To prevent loss or misplacement of accessories Signup and view all the answers

What should you refer to when multiple detectors are included in the shipment?

The calibration certificates for serial number matches Signup and view all the answers

What is the recommended operating voltage for the Model 133-2 Gamma Detector?

550 V Signup and view all the answers

What is the typical dead time of the Model 133 Series Gamma Detector?

50 microseconds Signup and view all the answers

What is the material used for the tube in the Model 133 Series Gamma Detector?

30 mg/cm2 stainless steel Signup and view all the answers

What is the temperature range for the Model 133 Series Gamma Detector?

-20 to 50 °C Signup and view all the answers

How should the connector be attached to the detector?

By firmly pushing the connector together while twisting clockwise ¼ turn until latched Signup and view all the answers

What is the first step in testing the detector?

Ensure that the instrument high voltage is at the proper setting for the detector Signup and view all the answers

What is the typical background reading for the Model 133 Series Gamma Detector?

12 cpm Signup and view all the answers

What is the weight of the Model 133 Series Gamma Detector?

0.090 kg Signup and view all the answers

What should be done before cleaning the detector?

Allow the instrument to sit for one minute Signup and view all the answers

What temperature range is acceptable for using the detector?

-20 to 50 °C Signup and view all the answers

What indication signifies a potential malfunction in the detector?

The instrument does not exceed the efficiency listed in the specification Signup and view all the answers

Which of the following describes the proper environmental condition for using the detector?

Indoor or outdoor use in a dry environment Signup and view all the answers

What is the maximum relative humidity recommended for the detector's operation?

95% Signup and view all the answers

What is required for the detector to be considered ready for use during calibration?

It should indicate within 20% of the check source reading. Signup and view all the answers

Which of the following is NOT a recommended cleaning precaution for the detector?

Immersing the instrument in cleaning liquid Signup and view all the answers

Study Notes

Unpacking and Repacking

Remove calibration and functional check certificates; store securely.
Ensure all items from the packing list are included when unpacking detectors and accessories.
Check serial number matches on calibration certificates for multiple detectors.
For returns, use adequate packing materials and attach warning labels.
Include an Instrument Return Form obtainable from Ludlum's website under the “Support” tab.
Test the detector with a check source to confirm readings are within 20% of the last calibration.

Safety Considerations

Suitable for indoor or outdoor use in dry conditions with no maximum altitude limit.
Operates effectively in temperatures ranging from -20 to 50 °C (-4 to 122 °F); can be certified for -40 to 65 °C (-40 to 150 °F).
Maximum relative humidity should be less than 95% (non-condensing).
Pollution degree classification is 3, relevant for environments susceptible to condensation.

Cleaning Instructions

Clean externally using a damp cloth with water only; avoid immersion in liquids.
Precautions include turning off electronics, waiting one minute, and disconnecting the detector cable before cleaning.

Specifications

Models 133-2 to 133-7 require a recommended operating voltage of 550V (460V for model 133-7).
Energy response is within 25% for a range of 60 keV to 3 MeV.
Sensitivity varies among models, with the highest being 1000 cpm/mR/hr for model 133-2.
Background count ranges from 1 to 12 cpm across different models.
Typical dead time is 50 microseconds; input sensitivity is 30 mV +10 mV.
The tube is constructed of 30 mg/cm² stainless steel with halogen quench.

Operating Procedures

Connect detector cable by twisting clockwise to secure both ends onto the detector and instrument.
Ensure high voltage settings are appropriate (typically 550 volts) before operation.
Check background readings after connecting the detector to ensure functionality.

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Description

Learn about the steps to unpack and re-pack a Model 133 Series Gamma Detector, including handling calibration certificates and detector accessories.