DMQ QH7 U UCI Hardness testers

Only by Request

Ultrasonic Contact Impedance

Part # NMQH7U Category

Our QH7 U is a HEAVY-DUTY UCI hardness tester that is factory pre-calibrated for steel while for other metals you can calibrate in very simple steps using reference blocks of the same material.

All QH7 models include rechargeable batteries and a Data Logger to store 32000+ measurements that can be transferred to a PC via Bluetooth o USB using DMQ DataCenter software.

Model

QH7 C, QH7 L, QH7 U

Measure

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

UCI Probe

  • Loads:
    10N
    50N

    With CalTag technology DMQ probes can be changed or replaced without having to calibrate the electronic unit

Measuring Angles

  • 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 Display

  • LCD 128×64 pixels
  • RGB color LED backlight illumination (ON, OFF, Auto)
  • Adjustable digital contrast

Alarms

  • Low & High, user defined
  • Number of impacts
  • Alarm Types
    Visible: Flashing backlight and irregular digits
    Audible: Intermitent beep

Multi-Language

  • English
  • Spanish
  • Portuguese

Materials

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

Units

  • HV (vickers)
  • HB (Brinell)
  • HRC (Rockwell C)
  • HRB (Rockwell B)
  • HS (Shore)
  • Rm (Mechanical Ressistance)
  • User Units
    Up to 8

Connection

  • USB
  • Bluetooth
  • RS232 (optional cable)

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

Connectors

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

Warranty

  • 5 year limited on electronics
  • 6 months on accessories

Measuring Ranges

  • 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)

    Conversions according to ASTM E140 standards

 

Model Upgrade Licenses

  • Upgrade to a QH7 C with the purchase of a license and a DMQ impact device

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

 

DMQ QH7 U standard configuration

DMQ QH7 U electronic unit
DMQ UCI 10N or 50N probe
Coupling paste
USB cable
Pendrive with DMQ DataCenter software
High impact carrying case
Certificate of conformity

Measure

Method:
Ultrasonic Contact Impedance
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 blocks
Measuring Range:
100HV to 940HV

UCI Probe

Types:
10N, 50N
Indentor:
Diamond 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
Connector:
Type Micro-Dot
Probe Body:
Stainless steel

With CalTag technology DMQ probes can be changed or replaced without having to calibrate the electronic unit.

Features

Histogram:
3 to 10 bar graphic representations
Real Time Statistics:
Max, Min, Mean, Range and Standard Deviation
User Units:
2 user units can be established
Direct Access Key:
Set to change hardness unit, to save to memory or 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

Native HV (Vickers)

Conversions according to ASTM-140 and DIM 50150 standard
HB (Brinell)
HRC (Rockwell C)
HRB (Rockwell B)
HS (Shore)
Rm (Mechanical Ressistance)

Material Units

Up to 8

Hardness Ranges

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)

For metals other than steel you must use reference blocks for calibration.

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)

Model Upgrade Licenses

Upgrade to a QH7 C with the purchase of a license and a DMQ impact device.

Connections

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

Front Panel

Keypad:
Membrane keypad

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

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 level alarm
Auto-Off:
Programmable 1 to 120 minutes

Warranty

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

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