DMQ QH7 C HEAVY-DUTY Combined Leeb & UCI Hardness Tester

Only by Request

Ultrasonic Contact Impedance

Our QH7 C is the most complete and advanced HEAVY-DUTY portable metal hardness tester available from Demeq because it combines the Leeb or rebound method and the ultrasonic contact impedance (UCI) method which compliment one another allowing coverage on the widest range of portable metal hardness testing applications.

Impact devices as well as UCI probes include CalTag technology so that the unit automatically recognizes the device or probe being connected so there is no need for adjustments or calibration.

Model

QH7 C, QH7 L, QH7 U

Method

UCI

  • Ultrasonic Contact Impedance (UCI)
  • Native unit is Vickers
  • Resolution ± 1HV
  • Accuracy ± 5% HV

Leeb

  • Impact rebound method
  • Resolution ± 1HL
  • Accuracy ± 4 HL
    (0.5% at 800 HL)

 

Probes & Impact Devices

  • UCI Probes:
    10N
    50N
  • Impact Device
    Types:
    D, DC, DL, C,
    G, E

DMQ probes and impact devices include CalTag technology so that the unit automatically recognizes the probe or impact device being connected.

DMQ impact devices also feature GyroTag technology for automatic impact angle detection.

Measuring Angle

  • Measure in all directions

Features

  • Automatic hardness unit conversions
  • User defined units
  • Direct access key
  • Realtime graphics
  • Realtime statistics
  • Alarms
  • Selectable view modes
  • Measuring modes
  • Internal clock

Graphic LCD

  • LCD 128×64 pixels
  • RGB color LED backlight illumination (ON, OFF, Auto)
  • 24mm / 0.94in tall digits
  • Adjustable digital contrast

Connection

  • USB
  • Bluetooth
  • RS232 (optional cable)

Materials

UCI

  • Steel (Precalibrated from factory)
    Other materials require calibration on reference blocks.

Leeb

  • Steel
  • Cast Steel
  • Alloy Tool Steel
  • Stainless Steel
  • Grey Cast Iron
  • Spheroid Iron
  • Cast Aluminum
  • Brass
  • Bronze
  • Wrought Copper

Units

UCI

  • HV (vickers)
  • HB (Brinell)
  • HRC (Rockwell C)
  • HRB (Rockwell B)
  • HS (Shore)
  • Rm (Mechanical Ressistance)

    Material Units

    USR-1
    USR-2
    USR-3
    USR-4
    USR-5
    USR-6
    USR-7
    USR-8

Leeb

  • HL (Leeb)
  • HB (Brinell)
  • HV (vickers)
  • HRC (Rockwell C)
  • HRB (Rockwell B)
  • HS (Shore)
  • Rm (Mechanical Ressistance)

    User Units
  • USR-A
  • USR-B

Warranty

  • 5 year limited on electronics
  • 6 months on accessories

Data Logger

  • 32000 readings that can be sent to a PC using DMQ DataCenter software
  • 8 folders with 10 character alphanumeric naming
  • 2 capture modes
    Manual: Touch “Store” key
    Auto: Automatically stores values
  • Date and time register

Measuring Ranges

UCI

  • Steel
    100-940 HV (Vickers)
    95-500 HB (Brinell)
    20-68 HRC (Rockwell C)
    55-100 HRB (Rockwell B)
    32-97 HS (Shore)
    275-2194 N/mm2 (Rm)
  • Aluminum
    44-189 HV (Vickers)
    40-160 HB (Brinell)
    28-91 HRB (Rockwell B)
  • Copper
    40-130 HV (Vickers)
    75-120 HB (Brinell)
    2-67 HRB (Rockwell B)
  • Brass
    45-196 HV (Vickers)
    42-169 HB (Brinell)
    10-93 HRB (Rockwell B)Leeb
  • Steel and Cast Steel
    80-647 HB (Brinell)
    80-940 HV (Vickers)
    20-68 HRC (Rockwell C)
    38-100 HRB (Rockwell B)
    32-100 HS (Shore)
    275-2194 N/mm2 (Rm)
  • Alloy Tool Steel
    21-67 HRC (Rockwell C)
    80-898 HV (Vickers)
  • Stainless Steel
    85-655 HB (Brinell)
    85-802 HV (Vickers)
    20-62 HRC (Rockwell C)
    46-101 HRB (Rockwell B)
  • Grey Cast Iron
    93-334 HB (Brinell)
  • Spheroid Iron
    131-387 HB (Brinell)
  • Cast Aluminum
    19-159 HB (Brinell)
  • Brass
    40-173 HB (Brinell)
    14-95 HRB (Rockwell B)
  • Bronze
    60-290 HB (Brinell)
  • Wrought Copper
    45-315 HB (Brinell)

Power Supply

  • 2 x AA 1.2v Ni-MH Rechargeable
  • USB cable, cell phone charger

Dimensions

  • W: 165mm / 6.5in
  • H: 65mm / 2.55in
  • L: 105mm / 4.13in

Connectors

  • USB (cable included)
  • Type Lemo 0B 3-pin impact device connector
  • Type Lemo 00 UCI probe connector

Languages

  • English
  • Spanish
  • Portuguese
DMQ QH7 C standard configuration

DMQ QH7 C electronic unit
DMQ UCI 10N or 50N probe
* DMQ type D impact device with GyroTag
HLD test block
Coupling paste
USB cable
Pendrive with DMQ DataCenter software
High impact carrying case
Certificate of conformity

Methods

  • Ultrasonic Contact Impedance (UCI)

Resolution:
1 HB, 1HV, 0.1HRC, 0.1 HRB
0.1 HRB, 0.1 HS, 1 N/mm2
Accuracy:
+/- 5% HV
Materials:
Steel (Precalibrated from factory)
Other materials require calibration on reference test blocks
Measuring Range:
100HV to 940HV

  • Leeb or Rebound

Resolution:
1 HL, 1 HB, 1HV, 0.1HRC, 0.1 HRB
0.1 HRB, 0.1 HS, 1 N/mm2
Accuracy:
+/- 4 HL (0.5% at 800 HL)
Materials:
Steel and Cast Steel, Alloy Tool Steel, Stainless Steel, Grey Cast Iron, Spheroid Iron, Cast Aluminum, Brass, Bronze, Wrought Copper
Measuring Range:
200HL to 960HL

Probes & Impact Devices

  • UCI Probes

Types:
10N, 50N
Indentor:
Diamonnd pyramid
Indentation Depths:
10N

300HV – 12um
500HV – 9um
800HV – 7um
50N
300HV – 28um
500HV – 20um
800HV – 16um
Surface Roughness:
5N
– 1.52μm
10N
– 2.5μm
Minimum Thickness:
5mm / 0.2″
Minimum Weight:
0.4kg / 0.88lbs
Probe Connector:
Type Micro-Dot
Body:
Stainless steel

  • Impact Devices

Types:
D, DC, DL, C, G, E
Impact Device Compatibility:
DMQ with CalTag & GyroTag technology

Type D Impact Device Specifications
Impact Energy:
11 Nmm
Impact Tip Mass:
5.5g / 0.01lbs
Impact Tip Diameter:
3mm / 0.12in
Impact Tip Hardness:
1600 HV
Impact Tip Material:
Tungsten carbide

Features

Maesuring Angle:
Measure in all directions
Histogram:
3 to 10 bar graphic representations
Real Time Statistics:
Max, Min, Mean, Range and Standard Deviation
User Units:
8 user units can be created
Direct Access Key:
Hardness unit, to save to memory, to open files
View Modes:
4 numerical modes: different information is displayed
Graphic mode: view histogram graphics
Measure Modes:
Absolute: displays the actual measured value
Differential: displays the difference between the real value and a nominal reference value
Internal Clock:
Time and date

Data Logger

Storage:
Up to 32000+ readings
Data Transfer:
Send to a PC using dmq DataCenter software included at no additional charge
Organization:
8 files with 10 character alphanumeric naming
Capture Modes:
Manual: Touch the “Store” key to store values
Continuous: Automatically stores values
Date and Time Register:
Register day and time

Alarms

Low & High:
User defined
Alarm Types:
Visible: flashing backlight or irregular digits
Audible: intermitent beep

Display

Graphic LCD:
128×64 pixels
Viewable Area:
74 x 40mm / 2.9 x 1.57in
Backlight:
RGB color LED backlight (ON, AUTO, OFF)
Contrast:
Digital 30 steps

User Interface

Languages:
English, Spanish, Portuguese
Menu Screens:
Icon based
User ID:
Personal information with password protection

Units

  • UCI

Native: HV (Vickers)
Conversions according to ASTM E140 and DIM 50150:
HB (Brinell)
HRC (Rockwell C)
HRB (Rockwell B)
HS (Shore)
Rm (Mechanical Ressistance)

Material Units

Up to 8

  • Leeb

Native: HL (Leeb)
Conversions according to ASTM A-956:
HB (Brinell)
HV (Vickers)
HRC (Rockwell C)
HRB (Rockwell B)
HS (Shore)
Rm (Mechanical Ressistance)

User Units

USR-A
USR-B

Hardness Ranges

  • UCI

Steel :
100-940 HV (Vickers)
95-500 HB (Brinell)
20-68 HRC (Rockwell C)
55-100 HRB (Rockwell B)
32-97 HS (Shore)
275-2194 N/mm2 (Rm)
Aluminum:
44-189 HV (Vickers)
40-160 HB (Brinell)
28-91 HRB (Rockwell B)
Copper:
40-130 HV (Vickers)
75-120 HB (Brinell)
2-67 HRB (Rockwell B)
Brass:

45-196 HV (Vickers)
42-169 HB (Brinell)
10-93 HRB (Rockwell B)

  • Leeb

Steel and Cast Steel:
81-647 HB (Brinell)
80-940 HV (Vickers)
20-68 HRC (Rockwell C)
38-100 HRB (Rockwell B)
32-100 HS (Shore)
275-2194 N/mm2 (Rm)
Alloy Tool Steel:
80-898 HV (Vickers)
20-67 HRC (Rockwell C)
Stainless Steel:
85-655 HB (Brinell)
85-802 HV (Vickers)
20-62 HRC (Rockwell C)
46-102 HRB (Rockwell B)
Grey Cast Iron:
92-334 HB (Brinell)
Spheroid Iron
:
131-387 HB (Brinell)
Cast Aluminum:
19-159 HB (Brinell)
Brass:
40-173 HB (Brinell)
14-95 HRB (Rockwell B)
Bronze:
60-290 HB (Brinell)
Wrought Copper:
45-315 HB (Brinell)

Connections

Connect to PC:
Bluetooth
USB (cable included)
RS232 (optional cable)
Printer (optional):
Thermal printer with a USB cable
40 column printers with an RS232 cable

Electronic Unit

Dimensions:
W: 165mm / 6.5in
H: 65mm / 2.55in
L: 105mm / 4.13in
Weight:
200g / 7.05oz with batteries
Working Temperature:
-10°C to 50°C / 14°F to 122°F
Storage Temperature:
-20°C to 60°C / -4°F to 140°F
Enclosure:
Aluminium with rubber sides for easy grip
Front Panel:
Membrane

Power Supply

Batteries:
2 x AA 1.2v Ni-MH Rechargeable
Charge:
USB cable or cell phone charger
Battery Life:
40 hours with backlight off
Battery Indicator:
On all screens with a low bat alarm
Auto-Off:
Programmable 1 to 120 minutes

Warranty

Electronic Unit:
5 year limited warranty
Impact Devices:
6 months

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