HP 85070B High-Temperature Dielectric Probe Kit

Product Summary

Measure the dielectric properties of materials quickly and conveniently with the HP 85070B dielectric probe. Measurements made with this probe are nondestructive and require no sample preparation -- saving you time, trouble, and material.

The dielectric probe is well-suited for measurements of liquid or semisolid materials. Simply immerse the probe into the material; there is no need for special fixtures. The HP 85070B dielectric probe yields permittivity (dielectric constant), loss factor, loss tangent, or Cole-Cole diagrams -versus frequency- from 200 MHz to 20 GHz.

Product Features

• Hermetic glass-to metal seal, which makes it resistant to corrosive or abrasive chemicals

• Withstands a wide -40° to +200°C temperature range

• A special refresh calibration simplifies measurements over temperature

• er', er", tan delta or Cole-Cole plots; tabular listings of data

• Hardcopy plots to plotters or graphics printers; tabular listing to printers; save/recall/export data via disk in MS-DOS® ASCII format or HP BASIC BDAT format (HP LIF binary).

Product Specifications

Frequency Range
Probe:					200 MHz to 20 GHz (nominal)

Maximum limited by MUT properties:
					< 110/( |er* | )^1/2 GHz

Temperature
Range:					-40°C to +200°C
Rate:					< 10°C per minute

Accuracy (typical)
Dielectric constant, er':		±5%
Loss Tangent, tan delta, er"/er':	±0.05

Repeatability and Resolution (typical):	Two to four times better than 
					accuracy

Material Under Test Assumptions: 	
Material is "infinite" in size, non-magnetic (µr* = 1), 
isotropic (uniform orientation), and homogeneous (uniform composition)(e1).  
Solids have a single, smooth, flat(e2) surface with gap-free contact at 
the probe face.  

Sample Requirements
Diameter:				> 20 mm
Thickness:				> 20/( |er* | )^1/2 mm
Granule Size(e3):			< 0.3 mm
Maximum Recommended er':		< 100
Minimum Recommended tan delta(e4):	> 0.05


(e1)If the material is not homogeneous, the result is an average value
    weighted by the intensity of the E-field which is highest at the 
    center conductor of the probe tip.
(e2)Sample must be as flat as the probe face which is lapped to 
    ±100 µinches.
(e3)Measurement repeatability for granular materials is dependent on 
    density variation. 
(e4)Not recommended for low loss (tan delta < 0.5) materials with 
    er' > 5.

Product Ordering Information

HP 85070B	High-Temperature Dielectric Probe Kit 
Note: A network analyzer and controller are required to complete the 
      system.
   Opt 001	Adds Probe Stand
   Opt 002	Adds High-Temperature Cable
   Opt 300	Substitute HP BASIC Software

Upgrade Kits

HP85078A	Upgrade Kit 
Upgrades the HP 85070A	to the full capabilities of the HP 85070B.  

Options 070 and 370 include: new probe, shorting block, cable, 
adapters, and mounting bracket.
   Opt 001	Adds Probe Stand (highly recommended)
   Opt 002	Adds High-Temperature Cable
   Opt 070	Upgrade Kit, HP 85070A to 85070B, Std. (MS-DOS®)
   Opt 370	Upgrade Kit, HP 85070A to 85070B, Opt 300 (HP BASIC)

HP 85079B	Software Update  
Updates the HP 85070B	software to the most current version.  
Contact HP for	details.
   Opt 070	Updates HP 85070B, Std. (MS-DOS®) software
   Opt 370	Updates HP 85070B, Opt 300 (HP BASIC) software

All orders include the following:

High-Temperature Dielectric Probe:		
3.5 mm (m) connector type

Dielectric Probe Software:			
MS-DOS(registered) version is standard. 
Opt 300 substitutes the HP BASIC version.

Flexible Cable:					
Connects probe to network analyzer test port; 
1 meter long with SMA (f) connectors

High-temperature Cable (Opt 002):		
1 meter long semi-rigid high-temperature (-40° to +200°C) 
cable with SMA (f) connectors.

Adapters:						
Adapts network analyzer test port to flexible cable, when necessary; 
includes one 3.5 mm (m) to 7 mm adapter for 7 mm test ports and one 
3.5 mm (m) to Type-N (m) adapter for Type-N (f) test ports.

50 ohm Termination:			
Used for open/short/load calibrations; 3.5 mm (m) connector type.

Shorting Block and Clamp:		
Fits over probe face for a repeatable short circuit.

Remote Trigger Switch and Cable:	
Allows hands-free or remote measurements; 2 meter long cable connects 
to HP 8752, 8753, 8719, 8720, and 8722 network analyzers.

Mounting Bracket:	
Keeps probe in a fixed position to minimize cable movement for more 
repeatable measurements; bracket fits a 1/2-inch diameter support rod.

Probe Stand (Opt 001):			
Probe stand consists of a 24-inch high, 1/2 inch diameter metal 
support rod with a 13x7-inch porcelain base.

Liquid Vials (2) with Stoppers and Adapter:	
For measurements of liquids; 15 ml volume.

To help you make the right instrument choices

Your Field Sales Engineer is ready to answer your questions about specifications, applications and ordering. Find your Field Sales Engineer at your Local Sales Office.

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Page Updated: Thursday June 19 16:22:04 UTC 1997