HP 85070M Dielectric Probe Measurement System, 3 GHz

Measure the dielectric properties of materials quickly and conveniently with the HP 85070M dielectric probe measurement system. Measurements made with this probe are nondestructive and require no sample preparation -- saving you time, trouble, and materials. A measurement system based on 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 (depending on the network analyzer and material). The HP 85070M is a fully configured materials measurement system consisting of the HP 85070B dielectric probe kit, network analyzer, cable, probe stand, and pre-configured HP Vectra PC.

[ Features ]

Hermetic glass-to metal seal, which makes it resistant to corrosive or abrasive chemicals
Withstands a wide -40° to +200° temperature range which allows measurements versus frequency and temperature
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).

[ 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)¹.  
                              Solids have a single, smooth, flat² 
                              surface with gap-free contact at the probe face.  
Sample Requirements
Diameter:                     >20 mm
Thickness:                    >20/( |er* | )^1/2 mm
Granule Size³:                 <0.3 mm
Maximum Recommended er':      <100
Minimum Recommended tan delta⁴
                              >0.05


¹If 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.
²Sample must be as flat as the probe face which is lapped to 
±100 µ inches.
³¹Measurement repeatability for granular materials is dependent on 
density variation. 
⁴Not recommended for low loss (tan delta <0.5) materials with er' >5.

[ Ordering ]

HP 85070M 3 GHz Dielectric Probe Measurement System Opt 1FF Deletes HP Vectra PC Opt 020 20 GHz System

All orders include the following:
The HP 85070M dielectric measurement system includes all of the following: 1. HP 85070B Opt 001/002 high-temperature dielectric measurement system: High Temperature Dielectric Probe: 3.5 mm (m) connector type Dielectric Probe Software: MS-DOS(registered) version is standard.Option 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. 2 Liquid Vials w/ Stoppers & Adapter:For measurements of liquids; 15 ml volume. 2. HP D2623A Opt ABA 486/33N Vectra PC with HP D1194A Opt ABA super VGA display (includes keyboard, mouse, mouse pad and an installed HP 82335B HP-IB interace card). 3. HP 3630A Opt 004 PantJet color printer (with a 2 meter long HP-IB cable). 4. HP 8752A Opt 003 3-GHz RF network analyzer (with a 2 meter long HP-IB cable). HP 85070M Opt 020 substitutes the HP 8720C 20-GHz microwave network analyzer.

Trademarks:
MS-DOS is a U.S. registered trademark of Microsoft Corp.

[ Key Literature ]

HP 85070M Dielectric Probe Measurement System, 3 GHz, Technical Specifications ( PDF)

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[ Assistance ]

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Materials Test Equipment