Fully calibrated units are available for rental or purchase, with various meter and probe combinations. Contact us for specific combinations you may require or be interested in.

Ludlum Model 177 Bench Top Counter
Newer Style Unit | Fully Tested | Calibration Documents Included | 1 Year Functional Guarantee

This listing is for a Ludlum Model 177 bench top counter in the same tested and documented configuration shown in the photos.

Multiple units are available. The photos show one representative unit. The exact serial number and minor cosmetic condition may vary, but each unit shipped will be fully tested, documented, and ready for service as described.

This is a fully functional lab grade Ludlum bench top counter. It has been gone through, tested, documented, and is ready to be put to work. This is a proven, dependable radiation measurement instrument ready for daily use with a compatible detector probe and cable.

Testing and Documentation

• Fully tested and verified for proper operation
• Tested against a factory calibrated Ludlum Model 500 pulser
• Ludlum Model 500 pulser has current factory calibration with NIST traceability
• Same style pulser used by the Ludlum factory for instrument verification
• Calibration and test documents generated while going through this meter are included
• Documents are visible in the listing photos
• Instrument is functional, documented, and ready for service

Instrument Setup and Features

•Ludlum Model 177bench top counter

• C type detector connection
• Adjustable front legs to angle the display for easier viewing
• High voltage is displayable on the meter face
• Current high voltage setting is 900V
• Adjustable discriminator
• Discriminator is currently set to 35 mV, ideal for many common Geiger probes
• Discriminator can be adjusted as needed if requested at time of purchase
• Ready to use with a compatible detector probe and cable

Internal Battery Update

The original internal rechargeable battery has been removed.

• This prevents future damage from battery degradation
• Internal battery wires have been properly secured
• Unit is intended to be operated from standard external power

Photo Demonstration

This Ludlum Model 177 may be shown connected to a detector probe for demonstration of function. Any probe, cable, check source, sample, or other accessory shown for demonstration is not included unless specifically listed below.

Included With This Listing

• Ludlum Model 177 bench top counter with power cord as shown in the photos
• Calibration and test documents shown in the photos

Not Included

• Detector probe
• Probe cable
• Check source or sample
• Any accessories not specifically listed as included

Optional Probes, Cables, and Probe Clips

Compatible Ludlum probes, probe cables, and stainless steel probe clips may be available as a separate purchase.

When a compatible probe is purchased at the same time as a meter:

• The meter and probe will be verified and tested together before shipping
• One compatible probe cable will be included per meter, up to the number of probes purchased, max 2 per meter
• Stainless steel probe clip mounting can be added to the meter for the purchased probe or probes
• The number of probes that can be mounted to one meter is limited by available space, typically up to 2 probes

Simple Examples

• 1 meter with 1 probe purchased: 1 cable included and probe clip mounting added for that probe
• 1 meter with 2 probes purchased: 1 cable included and clip mounting added for both probes, if space allows
• 5 meters with 2 probes purchased: 2 cables included and 2 clips added because only 2 probes were purchased
• 5 meters with 5 probes purchased: 5 cables included and 5 clips added, one for each meter and probe set

Please contact us before purchase if you would like a complete meter and probe package. This allows the correct probe, cable, connector, and mounting arrangement to be confirmed before shipping.

1 Year Functional Guarantee

This instrument includes a 1 year functional guarantee from the date of delivery.

The guarantee covers the meter being functional and ready to use as described. It does not cover damage from abuse, misuse, dropping, improper storage, corrosion, unauthorized repairs, tampering, modification, or damage caused by connecting incompatible equipment.

This is a tested, documented, lab grade Ludlum Model 177 bench top counter that is ready to go directly into service with the proper compatible probe and cable.