Rail Mount Load Cell Display Transmitter, IQ810

Load cell rail mount indicator IQ810
Model IQ810 
is a programmable rail-mount precision digital indicator for load cell and strain gauge applications.

With precision front end circuitry for high accuracy and stability, the ratiometric circuitry automatically compensates for temperature drift and excitation voltage variances due to cable loss.

The alphanumeric 6-digit high-bright LED display makes for quick and easy set-up with menu help prompts and error messages.  The load cell excitation voltage is 5VDC for use with both 4-wire and 6-wire load cells, powering up to 6 x 350Ω load cells.

Advanced features include auto-zero tracking; user input linearisation; max/min recording; programmable front push buttons; 2 programmable digital inputs; security menu lockout; motion indication; advanced digital filtering; automatic offset calibration; plus many more to provide an all-in-one precision load cell indicator.

RS232 and RS485 communications is supplied as standard with MODBUS™ RTU and MODBUS™ ASCII protocols.  A simple ASCII-out protocol is also provided for serial printing and communicating to large displays.

Model IQ810 also contains 2 programmable mechanical relays and analog retransmission for generating a precise 0/4-20mA or 0-10V analogue output signal.
  • High bright 6-digit 14-segment LED displays for easy setup and calibration
  • 4 or 6 wire load cell / strain gauge input
  • Powers up to 6 x 350Ω load cells at +5VDC excitation voltage
  • High precision 24 bit ratiometric ADC front end circuitry
  • -199999 to +999999 display counts
  • DIN Rail mount ABS enclosure
  • Easy calibration using known weights
  • 16-bit Analog output (0/4-20mA or 0-10V)
  • 2 relay alarm setpoints
  • RS232 communications (MODBUS™ RTU / ASCII and Infiniteq ASCII protocols)
  • RS485 communications (MODBUS™ RTU / ASCII and Infiniteq ASCII protocols)
  • 2 Programmable digital inputs (pull up or pull down field jumper selectable)
  • 3 Programmable front panel push buttons
  • Universal power supplies with EMI and fuse protection
  • 16 Point lineariser
  • Auto-zero tracking function
  • Automatic offset calibration
  • Tare function
  • Gross/Net function
  • Selectable and adjustable advanced digital filtering
  • Alarms, Motion indication and Net front panel status LED's
  • Max / Min recording
  • Security menu lockout
  • Built in menu help hints and prompts
  • Field upgradable firmware via the RS232 interface
  • 1 year warranty
General:Model IQ810
Display6-digit, 13.8mm (0.543”) 14 segment high brightness red LED
Display range -199999 to +999999
Decimal point0 to 0.00000
Status LED's4 LED's for SP1, SP2, Net, Motion
Digital Inputs Built in hysteresis, filter and input over voltage protection
Maximum input voltage <30VDC
Input logic is field jumper selectable
(Pull up, sinking inputs) 10kΩ internal resistor to 5V
(Pull down, sourcing inputs) 10kΩ internal resistor to common
Active/Non-Active input trigger: <1.9V
Non-Active/Active input trigger: >2.3V
Keypad4 keys total, 3 programmable keys
Memory storageNon-volatile EEPROM, 100000 write cycles minimum
Warm up time15 minutes
Power Requirements:
AC Supply85-264VAC, 50/60Hz or 120-370VDC
Isolation: 3000VAC/1min
Low DC Supply10-30VDC input Reverse and over voltage protected
Isolation: >1000V/1min
High DC Supply25-70VDC input Reverse and over voltage protected
Isolation: >1000V/1min
Power Consumption<8W (Depending on options selected)
Fuse (built in)2A Slow Blow (Wickmann #3721200000)
RS Components part #226-6599
Operating temperature-10°C to 50°C (14°F to 122°F)
Storage temperature-40°C to 80°C (-40°F to 176°F)
Operating / storage humidity<85% RH non-condensing
Overall Dimensions 102 x 132 x 57mm (LxHxD) (4.02 x 5.20 x 2.24”)
(Depth includes connectors)
MountingDIN rail mounting
Enclosure materialABS plastic
Front facia ratingIP20
Wiring connectionsRemovable terminal blocks
ADC Resolution24 bit Delta-sigma
Input range-19mV to +19mV
Conversion rate10 updates/second
FilterMoving average digital filter with programmable input step detection
Increment size1, 2, 5, 10, 20, 50, 100, 200
Input Impedance>100 MΩ
Linearity<0.01% of full scale
Accuracy0.05% of full scale
Calibration methodFrom the load cell calibration certificate or from using known weights
Load cell connection4 or 6 wire connection + shield (sense included)
Load Cell Excitation:
Excitation Voltage5VDC fixed
Excitation current Max. 90mA
Up to 6 x 350Ω or
10 x 1000Ω load cells
Cable compensationRatiometric
Analogue Output:(menu selectable)
Ranges 0-20mA
DAC Resolution16 Bit
Update rate10 updates/second
Current output compliance500Ω maximum load (Current is source, not sink)
Voltage output compliance1kΩ minimum load
Current open loop detectionDisplay flashes “mA.Loop” error message
Linearity<0.02% of full scale
Accuracy0.05% of full scale
Protocol MODBUS™ RTU
ASCII In (Infiniteq Protocol)
ASCII Out (Infiniteq Protocol)
RS232 Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Data bits: 7 or 8 bits
Parity: Odd, Even or None
Stop bits: 1 or 2 stop bits
Non isolated
RS485 Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Data bits: 7 or 8 bits
Parity: Odd, Even or None
Stop bits: 1 or 2 stop bits
Internal 120Ω field jumper selectable termination resistor
Max 32 instruments per line
Setpoints:2 electro-mechanical relays
Contact rating2A @ 240VAC or 30VDC (resistive load)
Isolation to input circuitry>1000Vrms for 1 minute
TypeFORM-C (change-over contact, NO / NC)
Life expectancy >100K cycles min. at full load rating
External RC snubber extends relay life for operation with inductive loads
Order codes and options:

  IQ810 for 85-264VAC auxiliary supply
  -700   10-30VDC auxiliary supply
  -701   25-70VDC auxiliary supply
  -765   R-C snubber noise and arc suppressor

IQ810 6-digit rail mount weight display

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