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MAGNA Series Strain Gauge / Load Cell Input Large Digit Displays

For Use with Strain Gauges & Load Cells. Includes Excitation for Four 350-Ohm Load Cells in Parallel.

Standard Features

  • Choice of 2-1/4", 4", 6" or 8" digit heights
  • Choice of 4 or 6 digits with decimal points
  • Choice of normal or outside viewing brightness
  • Compatible with load cells from 0.5 mV / V to 4 mV / V
  • Easily scaled to engineering units
  • Filtering, last-digit rounding and tare for weighing applications
  • Choice of panel mount, wall mount or suspension mount
  • Choice of 95-264 Vac or 11-30 Vdc power
  • Sealed to NEMA-4 (IP65)
  • Only 3.0" (75 mm) deep
  • Programmable from front panel
  • Optional two or four 2A relay outputs, analog output, serial I/O
  • Optional two or four 2A relay outputs, analog output, serial I/O

MAGNA Series Strain Gauge / Load Cell Input Large Digit Displays feature a signal conditioner for use with 0.5 mV / V to 4 mV / V load cells, an isolated excitation capable of powering up to four 350-ohm bridges in parallel at 10V and 120 mA, and easy scaling for display in engineering units such as lbs or kg. Standard feature include digital signal filtering with a time constant adjustable from 0 to 25 sec, selectable last-digit rounding of 1, 2, 5, 10, 20 and 50, and 10-point custom curve linearization.

Viewing distances up to 320 feet (100 m) are achieved with 8" digits. A rule of thumb is that viewing distance in feet is 40 times digit height in inches, or in metric terms, that viewing distance in meters is digit height in millimeters divided by 2.

Four digit heights are available as standard: 57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9"), and 200 mm (7.9"). Solid segments are used for normal brightness 2.2" and 4.0" digits. Individual 5 mm LED pixels are used for larger digits and outdoor brightness versions. The number of digits can be 4 or 6.

Indoor or outdoor viewing: MAGNA Series Displays with normal brightness LEDs can be read over a machine or across a plant floor. Displays with outdoor brightness LEDs can be read across an industrial yard, parking lot or roadway, for example to display vehicle load. A heater option allows outdoor operation in winter in cold climates. Available mounting options are panel mount, wall mount and suspension mount. Environmental sealing to IP65 (NEMA-4X) is standard.

Standard options include two or four 2A relays, an analog output, an RS232 or RS485 serial data output, and 95-264 Vac or 11-30 Vdc power.

Intuitive setup is normally provided by means of built-in front panel switches, which can be locked. It is also possible to remotely wire four pushbuttons to the display.

Load cell input board

Serial data output boards

Relay output boards

Analog output boards

Types Produced to IPC 610 Class 2 Standard
  UL ISO9001:2008 QA
Strain Gauge / Load Cell Input
A/D Converter 20-bit resolution
Signal Gain Suitable for 0.5 mV / V to 4 mV / V load cells
Input Resistance > 10 MΩ
Accuracy ± 0.05% of range.
Tempco, Scale ± 25 ppm/°C
Tempco, Offset ± 30 ppm/°C.
Excitation Output Isolated 10V up to 120 mA to power up to four 350Ω load cells in parallel
Number of Digits 4 or 6
Digit Height 57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9"), or 200 mm (7.9")
Digit Color Red
Brightness Variable
Numeric Format or
Display Update Rate 10 readings/second
User Controls
Scaling Digital direct or theoretical scaling with scale & offset.
Filtering Digital filtering, time constants adjustable from 0 to 25 sec.
Rounding Selectable last-digit rounding of 1, 2, 5, 10, 20, 50 units.
Linearization Up to 10 points, direct or theoretical calibration.
Logic Inputs
Front Panel Controls Four buttons to set time, date, alarms, etc.
Logic Functions Three logic inputs, individually configurable for Hold, Reset, Tare, Peak / Valley, Net/Gross, Memory Address.
Logic Levels Normally open, NPN or contact closure input to activate. 5V open circuit, 1 mA switched current.
AC Power (standard)  100-240 Vac
DC Power (option) 11-30 Vdc
Max Consumption 30 VA
Analog Output Option
Output Levels 0-20 / 4-20 mA into 0 to 500Ω, 0.4 µA resolution.
  0-10V into loads > 600Ω, 0.2 mV resolution.
  -10 to +10V into loads > 600Ωs, 0.4 mV resolution.
Resolution 16 bits
Accuracy 0.1% of range
Stability 50 ppm/°C
Output Isolation Isolated from input and power
Scaling Digitally scalable
Special Features Forward or reverse action possible.
Can be set to operate from net or gross value.
Alarm Output Option
Relay Type Two or four relays rated 2A, 250VAC, SPDT
Special Features Adjustable hysteresis
  Energize or de-energize on trip.
  Adjustable timers to set energize and de-energize delays. Can also be set to pulse for applications needing less than 100% duty cycle.
  In-band and out-of-band alarm function.
  Manual and automatic in-flight compensation.
  Can be set to operate from net or gross value.
Serial Data Output Option
Output Types RS232 or RS485, addressable, on demand or continuous output.
Special Features Can include time and date with RTC option fitted.
  Can be set to operate from net or gross value.
Storage Temp. -20°C to +70°C
Operating Temp. 0°C to 50°C, non-condensing. -25°C to 50°C, non-condensing, with MHTR AC heater option.
Sealing IP65 (NEMA4) standard, all-round
Connections M12 compression glands for round cable, diameter 3.0 to 6.5 mm (0.118" to 0.256")
Mounting Wall mount, suspension mount, panel mount

Number of Digits & Case Dimensions

Display Format
Case width x height 4 Digits 6 Digits
57 mm (2.2") digits 279 x 155 mm (11.0" x 6.1") 376 x 155 mm (14.8" x 6.1")
102 mm (4.0") digits 434 x 196 mm (16.7" x 7.7") 616 x 196 mm (24.3" x 7.7")
150 mm (5.9") digits 514 x 247 mm (20.2" x 9.8") 744 x 248 mm (29.3" x 9.8")
200 mm (7.9") digits 664 x 298 mm (26.1" x 11.7") 984 x 298 mm (38.7" x 11.7")
Case depth 75 mm (3.0")
Note:   Models with 57 mm (2.2") digits, 4 digits and 4 relays require the larger 6-digit case. For panel mount versions, add 18 mm (0.7") to case width and height for the bezel and 25 mm (1.0") for cable glands in back of the case.
For applications assistance, phone 714-434-6131 ext. 104, or email
Ordering Guide
MAGNA Series Strain Gauge / Load Cell Input Large Digit Displays

Click on the radio buttons to build a standard model number with pricing (shown below the Ordering Guide). Prices are in US dollars and do not include shipping or duty charges (export sales). Please see our explanations and limitations applicable to pricing and online orders. Prices shown are in US Dollars and are Laurel's manufacturer's suggested retail price (MSRP) in the USA. Orders are processed manually, not directly by our shopping cart system. You don't have to supply credit card information when placing an online order.

North American Orders. Laurel does not sell factory-direct in the USA or Canada. Online sales orders are filled through distribution. During the ordering process, you will have the chance to select an authorized Laurel distributor, or you can ask Laurel to refer you to a distributor. The distributor will then contact you to quote shipping, tax and duty (where applicable), and arrange for payment.

International Orders. If your ship-to address indicates that you are outside of the USA or Canada and Laurel has a distributor in your country, we will forward your order to that distributor for follow-up. If Laurel does not have a distributor in your country, we will email you an order acknowledgment and a pro forma invoice which states the product price, shipping charges, and wire transfer information, which includes a $25 bank wire transfer fee.

Questions about your order? Please email your distributor or
MAGNA units are built to order. MAGNA orders are non-cancelable and non-returnable.

Customized large digit displays are available by special quotation:

  • LED colors green, blue, white,yellow (not just red).
  • Digit heights of 12", 16", 24" or 32" (not just4", 6" or 8").
  • 2 or 4 solid state relays (not just mechanical relays).
  • Stainless steel housing (for food processing and pharmaceutical industries).
  • Explosion-proof stainless steel housing rated for ATEX Zones 2 and 22 (equivalent to Class1 / Div 2).
  • Custom signs with different colors, with fixed captions, and with multiple numeric display windows.
   SKU  Descriptions Price
Base meter
M24 2 inches (57 mm), 4 digits. Display to $585
M26 2 inches (57 mm), 6 digits. Display to $750
M44 4 inches (102 mm), 4 digits. Display to $920
M46 4 inches (102 mm), 6 digits. Display to $1200
M64 6 inches (150 mm), 4 digits. Display to $1620
M66 6 inches (150 mm), 6 digits. Display to $1645
M84 8 inches (200 mm), 4 digits. Display to $1990
M86 8 inches (200 mm), 6 digits. Display to $2035
Signal Input (one required, select one)
MLC Load cell $135
Analog output board (one optional)
None $0
MAO1 4-20 mA $95
MAO2 0-10V $95
MAO3 -10V to +10V $160
Relay output board (one optional)
None $0
MRL1 Two 5A, 250 Vac relays $80
MRL2 Four 5A, 250 Vac relays $105
Serial Data Output (one optional)
None $0
MO232 RS232 $85
MO485 RS485 with Modbus ASCII $125
Case and mounting (one required)
MT1 Panel mount, black NEMA-4 case $210
MT2 Wall mount, black NEMA-4 case $115
MT3 Suspension mount, black NEMA-4 case $115
Meter modifiying options (not shippable separately from meter)
MRDLV Daylight viewing brightness for operation down to 0°C (32°F) instead of normal indoor brightness $175
MHTR Heater for outdoor operation down to -25°C (-13°F) $400
MPS2 11-30 Vdc power instead of normal 85-265 Vac power $115
UM Extra case width for 2 blank digits $60
Use UM for units of measure like ºC. Required with M24 for relay, analog output or serial output options. Added at no charge with MHTR for M24 or M44.
Add-on Options
MRP Remote programmer with 2 meter cable (display can also be programmed from front panel) $150
Configured model number M24-MLC-MT2
Configured price per model $835
Quantity 1
Extended price $835
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