PT - Model PT110, PT111, PT112 -Analogue Load Cell Conditioners

There are 8 position rotary switches and annunciator LEDs on the front panel of the instruments. The upper rotary switch adjusts the empty scale’s analogue output level (zero adjustment) and the lower rotary switch adjusts the gain of the instrument (span).

The PT110LC is good for weighing where the weight of the item does not change quickly, such as silos, tanks and scales.
Additionally the PT111LC has 2 set point relay outputs for process control or hi or low alarms, more analogue output options and and an RS232 port for configuration via PC and AzCom software.

The PT112LC is a high speed version of the PT111LC with 6 wire load cell connection and remote zero input with fast response and could also be used for filling, batching and checkweighing.

• Minimized zero and span drifts due to use of micro-controller technology.
• High accuracy, very low temperature drift 24 bit ADC and 16 bit DAC converters.
• Compact DIN rail mounting, size is only 22.5mm × 99mm from the front.
• Long term stability and low temperature drifts eliminate the need for frequent readjustment.
• Digital adaptive anti-vibration filter to minimize errors from environmental vibrations.
• All instrument have been pre-calibrated to 0–10 V and to 4–20 mA analog output ranges for 0–2mV/V load cell signal range as a factory default.
• Factory matching facilitates swap out without PLC readjustment.

• Inputs most strain gauge bridge devices (load and pressure).
• Analogue output, selectable 0-10V or 4-20mA.

• Additional output options 0-5V, 0-20mA.
• 2 set point relay outputs.
• 3 filter settings.
• Programmable via PC, PLC and AzCom software.
• Calibration without calibration weights (using load cell mV/V entry).

• High speed conversion, up to 800 conversions per second. Step response as fast as 25ms.
• Adjustable response for fast changing processes with 9 step filter.
• Low drift of <0.005% FSO/ºC.
• Increased excitation for larger installations, 8x 350Ω.
• 6 wire load cell connection for accuracy.
• Opto-isolated input for zeroing.

• Power Supply: 12-28VDC, 200mA
• Span Stability: <0.007% FSO/ºC (PT112LC <0.005% FSO/ºC)
• Non-linearity: <0.01% FSO/ºC
• Load Cell Excitation:
• 5V, up to 4x 350Ω or 8x 700Ω load cells, 4 wire connection
• PT112LC up to 8x 350Ω, 16x 700Ω load cells
• Input range: 0mV to +20mV.
• Zero Adjustment Range: -19mV to +19mV
• PT112LC -18mV to +18mV
• Span adjustment range: 0.2mV/V to 4mV/V input for full output
• PT112LC 0.16mV/V to 3.6mV/V
• Resolution: Internal 16000000/External 65000, 24 bit ADC/16 bit DAC
• Response speed: PT110LC fixed 500ms, PT111LC adjustable
• PT112LC adjustable to 25ms fastest.
• Annunciators: Run, Current/voltage mode, Error
• Front panel: 2 Rotary switches, 3 LEDs on the front panel.
• Operating Environment: -10ºC to 45ºC (14ºF to 113ºF); max. 85% RH, non-condensing. IP20
• Enclosure and Dimensions: Polyamide, DIN-rail mount, IP20, Front Width:22.5 x Height: 99, Depth:114.5, weight 0.45kg
• Mounting: DIN rail 35 mm x 7.5 mm, DIN 46277-3
• Isolation: Common ground connection (VDC, GND). EMC Immunity Class E2.
• Analogue Output:
• 0-10VDC or 4-20mA (PT110LC),
• 0-10VDC or 0-5VDC or 4-20mA or 0-20mA (PT111LC, PT112LC).
• Programmable Setpoint output:
• PT110LC;- none,
• PT111LC, PT112LC;- 2 relay set points, 230 VAC, 0.5 A
• RS-232C:
• PT110LC;- none,
• PT111LC, PT112LC;- Set up and calibration with PC, PLC and AzCom software
• Calibration:
• PT110LC;- Performed with rotary switches on the front of the instrument.
• PT111LC, PT112LC;- Performed with rotary switches on the front of the instrument. With AzCom, can be performed via PC without calibration weights.
• Electronic Calibration:
• PT110LC;- no.
• PT111LC, PT112LC;- YES.
• Fast Calibration:
• PT110LC;- no.
• PT111LC, PT112LC;- YES.
• Digital Filter:
• PT110LC;- Fixed.
• PT111LC;- 3 step adjustable digital adaptive filter adjusted via PC with AzCom.
• PT112LC;- 9 step adjustable digital adaptive filter adjusted via PC with AzCom.