MZH-422
Tension Sensor

7 Tension ranges available
from 0 – 1000 cN up to 0 – 100 daN
Stationary electronic tension sensor for narrow, parallel running flexible material as wires, thin ropes and cables up to 15 mm Ø, as well as linear, flat material up to 10 mm width

Large, hardened guide rollers for minimized material deflection

Tension sensor with RS 422 output for multi station system and connection to a with PC

Special Features

  • Small, compact housing
  • Tension sensor MZH-422 with integrated microprocessor controlled measuring amplifier and RS-422 interface for multi station system
  • Typical material path – warping the 3 rollers
  • Ball-bearing mounted guide rollers,
    – V-grooved (for material with max. 4 mm Ø)
    – U-grooved (for material with 3 up to 15 mm Ø)
    – tape grooved (for material with max. width of 10 mm)
  • Easy installation, even afterwards, on existing machines
  • Universal mounting possibility – easy to install, even afterwards, on existing machines:
    The sensor can be mounted using the two threads at the underside of the housing body. Alternative it can be fixed on two flanges on the side of the unit.
  • Easy calibration to customized material by operator – zero and gain calibration is required
  • Measuring principle – load cell with high quality strain gauge bridge

Standard Features

  • Control lamp shows operative mode availability
  • Tension sensor MZH-422 with aluminium housing
  • CAT 5 cables are used for data transfer
  • Required power supply +15…24 V DC (regulated)
  • Certificate of Compliance with the order 2.1 according EN 10204 is included
  • Optionally available: Inspection Certificate 3.1 according EN 10204 with calibration report

Special features of the RS-422 interface:

  • Up to 24 sensors with different tension ranges and designs may be connected in one line (data transfer max. 200 readings/sec.)
  • Connection to RS-232 using a converter (RS-422 – RS-232).
  • The RS-422 signal can be used for a single sensor over a distance of 1000 m.
  • Each sensor can individually be addressed and set up
  • Can be connected to PLC controls with digital input
  • Simple connection to BUS-Systems using gateways

 Available Models

Model Tension Range
 Measuring Head Width*
 SCHMIDT Calibration Material**
MZH-1000-422 0 – 1000 cN 120mm PA: 0.30 mm Ø
MZH-2000-422 0 – 2000 cN 120mm PA: 0.50 mm Ø
MZH-5000-422 0 – 5000 cN 120mm PA: 0.80 mm Ø
MZH-10K-422 0 – 10 daN 120mm PA: 1.00 mm Ø
MZH-20K-422 0 – 20 daN 120mm PA: 1.50 mm Ø
MZH-50K-422 0 – 50 daN 120mm Steel rope 1.50 mm Ø
(7x7x0.20)
MZH-100K-422 0 – 100 daN 120mm Steel rope 3.00 mm Ø
(6x7x0.30)

Other tension ranges and measuring head widths available on request.
Other measuring units available, such as g or kg.
* Outer dimensions of front plate
** Suitable for 95 % of applications PA = Polyamide Monofilament

Calibration to customized material:
If process material differs significantly from the SCHMIDT calibration material in diameter, rigidity or shape, special calibration using customer supplied samples is recommended. For this purpose a material sample of about 5 m should be supplied.

SPECIFICATIONS

Calibration: According to SCHMIDT factory procedure
Accuracy: ±1.5 % full scale and ±1 digit or better
Other calibration material:
±3 % full scale and ±1 digit or better
Overload protection: 100 % of tension range
Measuring principle: Strain gauge bridge
Measuring roller deflection: Max. 0.5 mm
Natural frequency: Approx. 500 Hz, depending on tension range
Signal processing: Digital 12-bit A/D converter, Internal averaging up to 4 sec.
Communication frequency: 200 readings/s
Temperature coefficient: Less than ±0.05 % full scale/°C
Output signal: RS-422 (57600, 8, N, 1)
Temperature range: 10 – 45 ºC
Air humidity: 85 % RH, max.
Power supply: +15…24 V DC, 50 mA (regulated)
Housing material: Aluminium
Dimensions: See dimensions
Weight net (gross): Up to model MZH-2000-422 approx. 560 g (700 g)
Model MZH-5000-422 and MZH-10K-422 approx. 600 g (750 g)
Model MZH-20K-422 and higher approx. 640 g (800 g)

Specifications subject to change without notice!

GUIDE ROLLERS

Order-Code Line Speed vmax. … m/min Roller Material
Standard 4000 Hardened steel (max. 4 mm Ø)
Code R1
 4000 Hard chrome-plated steel (3 – 9 mm Ø)
for model MZH-5000-422 and higher
Code R4
 1000 Hardened steel (8 – 11 mm Ø)
for model MZH-50K-422 and higher
Code R5
 1000 Hardened steel (12 – 15 mm Ø)
for model MZH-50K-422 and higher
Code B6 2000 Hardened steel, width 6 mm
Code B10 2000 Hardened steel, width 10 mm

OPTIONAL ACCESSORIES

Software Tension Inspect 3

For displaying and saving readings on a PC (Win 7 and higher; 32 Bit und 64 Bit).
Features:
– Real-time reading
– The readings are also shown in a X-Y- diagram (time/date-tension)
– For data analysing the buffered diagram can be zoomed and scaled
– Recording of the buffered readings as CSV-file (on user request)
– Download of values to Excel

 

 

 

EBG800 – Serial Port Converter

Converter from RS-422 to RS-232 with terminal strip.
Order number: EBG800

 

 

 

 

 

 

 

 

 

 

EK0715 – Connecting Cable Cat 5 with open ends

Cat 5 cable with open ends for RS-422/RS-232 converter and power supply to connect the last sensor. Length 3 m.
Order number: EK0715

 

 

 

 

 

 

 

 

 

EK0711 – Connecting Cable Cat 5

Cat 5 cable for series connection of the sensors, length 3 m.
Order number: EK0711

 

 

 

 

 

 

 

EK0643 – RS-232 Connecting Cable

Connecting cable for connecting EBG-800 converter to PC, length 2 m.
Order number: EK0643

 

 

 

 

 

 

 

 K50204 – Mains Adapter

Recharger with 4 adapters (EU/USA/UK/AUS-NZL) for worldwide use,
100 – 240 V AC
Order number: K50204

OUTPUT SIGNAL

Standard

output signal: digital RS-422
Up to 200 readings can be transferred per second (internal sampling rate max. 57600 times/sec).

DELIVERY INCLUDES

Tension sensor MZH-422 with transport packaging, operating instruction in German or English (as requested), Certificate of Compliance with the order 2.1 according EN 10204 free of charge

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