Portable Dynamic Hardness Testing Machines ( Model : DHT-6 )

• Sleek & handy design, comes in a slim briefcase, for carrying the machine.
• Mainly used to check hardness in confined spaces, on large & heavy components, permanently installed parts with low test expenditure.
• The machine has built in conversion facility for given material to convert 'D' value to Vickers (HV), Rockwell (HRB, HRC), Brinell (HB), UTS scales which can be selected by pressing arrow keys.
• The model operates on two numbers of pencil cells.
• 30 hardness scales for different probes selectable by feather touch keys.
• Alpha numeric display - 16 characters x 2 lines LCD with improved electronics, micro controller circuity & user friendly software. Display indicates selected material & scale combination & hardness value.
• Five numbers of probes D, G, SH, EX & C can be given in different combinations.
• Facility to connect dot matrix printer through Centronics parallel port.
• Upto 100 readings can be stored in memory of the machine for printing purpose.
• Serial interface is possible with RS 232 port at an additional cost.
• Automatic calibration facility of probe is available through keyboard.
• Extra (Optional) Accessories such as - Standard test blocks, support rings, printer, serial interface, different types of probes are available.

Detailed Specifications Of Dynamic Hardness Tester

Measuring Ranges

For Standard Probe (D) / Short Probe (SH) / Extended Probe (EX) Scales (as follows) :

For Heavy Probe (G) scales (as follows)  :

For Low Energy Probe (C) scales (as follows) :

Dimensions (Approx.)  :

Measuring Accuracy :

Average Measuring deviation ±1% referred to D = 800 on Standard "D" Test Block at a particular test location.

Weight (Approx.) :

Operating temp. Range :

0°C to 50°C

Field Of Application :

With standard support ring machine can work on a minimum radius of 60 mm convex or concave. For lesser job dia. suitable additional support rings can be provided. (Ref. Extra accessories).

Power Supply Conditions :

Dry cell batteries (1.5 VDC x 2 Nos.) ; Size - AA, Type - R6.

Standard Accessories :

Extra (Optional) Accessories

Standard Test Block of any hardness. Support rings for smaller radius for

(SR 1) Convex, Concave, Cylindrical, Spherical radius 30 to 60 mm

(SR 2) Convex cylindrical radius 14.5 to 30 mm

(SR 3) Convex cylindrical radius 10 to 15 mm

(SR 4) Concave cylindrical radius 16.5 to 30 mm

(SR 5) Concave cylindrical radius 12.5 to 17 mm

(SR 6) Concave cylindrical radius 11 to 13 mm.

Serial Interface (Windows 98 Based).

80 Col. Dot Matrix Printer. Different types of Probes

Standard (D)

Short (SH)

Extended (EX)

Heavy (G)

Low Energy (C)