FSA DHT-6 Portable Dynamic Hardness Testing Machines Instruction Manual

: June 5, 2024
: FSA

Table of Contents

FSA DHT-6 Portable Dynamic Hardness Testing Machines
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Technical Specification
Power Supply Conditions
Standard Accessories
References
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Download This Manual (PDF format)

FSA DHT-6 Portable Dynamic Hardness Testing Machines

We are Manufacturer, Supplier, Exporter of Portable Dynamic Hardness Testing Machines and our set up is situated in Sangli, Maharashtra, India.

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

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FSA-DHT-6-Portable-Dynamic-Hardness-Testing-M-1

Technical Specification

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

HARDNESS / MATERIAL

| TEST RANGE AND ORDER CODE
---|---
BRINELL| VICKERS| ROCKWELL – C| ROCKWELL – B| SHORE D
Steel and Cast Steel unalloyed

/Low alloyed

| 80 – 647

ST / BHN

| 80 – 940

ST / VPN

| 20 – 68

ST / HRC

| 38.4 – 99.5

ST / HRB

| 32.5 – 99.5

ST / HSD

High Carbon, High

Chromium (12% & above) Cold

Work tool steel

|

–

|

80 – 898

HC / VPN

|

20.4 – 67.1

HC / HRC

|

–

|

–

S.G. Iron (CI with spheroided and nodular graphite) (GG-

40-80)

|

131 – 387

SG / BHN

|

–

|

–

|

–

|

–

---|---|---|---|---|---
Grey Cast Iron

Grade 15-40 (GG)

| 93 – 334

CI / BHN

|

–

|

–

|

–

|

–

Cast Al. Alloys non heat treated and quenched & tempered

condition

|

30 – 159

AL / BHN

|

–

|

–

|

–

|

–

Copper Zinc

Alloys (Brass)

| 40 – 173

BS / BHN

| –| –| 13.5 – 95.3

BS / HRB

| –
Copper Al. and Copper Tin

alloy (Bronze)

| 60 – 290

BZ / BHN

|

–

|

–

|

–

|

–

Wrought

Copper Alloys (Low alloyed)

| 45 – 315

Cu / BHN

|

–

|

–

|

–

|

–

Stainless Steel& High temp. resistant

Steel.

|

85 – 655

SS / BHN

|

85 – 800

SS / VPN

|

19.6 – 62.4

SS / HRC

|

46.5 – 101.7

SS / HRB

|

–

For Heavy Probe (G) scales (as follows)

HARDNESS / MATERIAL

| TEST RANGE AND ORDER

CODE

---|---
BRINELL| ROCKWELL – B
Steel & Cast Steel / Unalloyed and Low alloyed| 90 – 640

ST / BHN-G

| 47 – 99

ST / HRB-G

Grey Cast Iron Grade 15 – 40 (GG)| 90 – 315

CI / BHN-G

| –
S.G. Iron (CI with spheroided and nodular graphite) (G.G – 40,

| 125 – 350

SG / BHN-G

| –

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

HARDNESS / MATERIAL

| TEST RANGE AND ORDER CODE
---|---
BRINELL| VICKERS| ROCKWELL – C| SHORE D
Steel & Cast Steel /

Unalloyed and Low alloyed

| 80 – 683

ST / BHN-C

| 80 – 996

ST / VPN-C

| 20 – 69.5

ST / HRC-C

| 31.9 – 99.6

ST / HSD-C

Probes

| Standard (D)| Dia. 25 x 150 mm long.
---|---|---
Short (SH)| Dia. 25 x 100 mm long.
Extended (EX)| Dia. 25 x 150 mm long.
Heavy (G)| Dia. 30 x 255 mm long.
Low energy (C)| Dia. 25 x 145 mm long.
Digital Display Unit| –| 188 (L) x 105 (W) x 64 (H)

mm.

Measuring Accuracy –

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

Weight (Approx.) –

Probe (Standard) – 150 gms. Display Unit – 325 gms.

‘D’ scale standard test block – 3000 gms.

Total Weight – 7 kg. of Machine (with all accessories & carry case)

Operating Temp. Range –

0°C to 50°C

Field of Application

FIELD| FOR D/SH/EX

PROBE

| FOR G PROBE| FOR C PROBE
---|---|---|---
Prepration of the surface to be tested| N 7 ( 66 )| N9| N5
Max. roughness depth RL| 10 microns| 30 microns| 2.5 microns
Av. roughness depth Ra = Cla = AA| 2 microns| 7 microns| 0.4 microns
Min. weight of the test piece……….

– of compact shape

– on solid support

– coupled

| 5 kg.

2.5 kg

0.1 to 2 kg.

| 15 kg.

5-15 kg

0.5-5 kg.

| 1.5 kg. 0.5-1.5 kg

0.02-0.5 kg

Min. thickness of test piece coupled| 5 mm| 15 mm| 2 mm
Min. thickness of layer with surface hardening| 0.8 mm| –| 0.2 mm
Indentation of the test tip with 300 HB specimen……………

Hardness – Diameter

Depth

| ****

0.6 mm 13 micron

| ****

–

| ****

–

Min. bore dia. of the specimen (only for short

probe)

| 100 mm| –| –

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

Probe (Normally ‘D’, if specified other ProbeCan be supplied in place of ‘D’) – 1 No.
Digital display unit – 1 No.
Standard test block calibrated in ‘D’ Scale – 1 No.
Brush for cleaning probe – 1 No.
Carry case for Machine – 1 No.
Instruction manual – 1 No.
Coupling Jelly – 50 gms.

Extra (Optional) Accessories Standard Test Block of any hardness. Support rings for smaller radius for