FUTEK IAC200 Four Channel Summing Junction Box User Guide

: June 8, 2024
: FUTEK

Table of Contents

FUTEK IAC200 Four Channel Summing Junction Box
Getting Help
Setup Guide
Configuration
Wiring
Measurement
Adjustment
Setup Finalization
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

FUTEK IAC200 Four Channel Summing Junction Box

Getting Help

TECHNICAL SUPPORT
For more IAC200 support, please visit: https://www.futek.com/summing- junction-box

Drawing Number: EM1006-A
FUTEK reserves the right to modify its design and speciﬁcations without notice.
Please visit https://www.futek.com/TermsAndConditions for complete terms and conditions.
10 Thomas, Irvine, CA 92618 USA
Tel: 949-465-0900
www.futek.com

Setup Guide

The setup steps on the following pages involve placing a known load on each sensor and adjusting the output down so each sensor has the same output under the same load.
The result of the setup will be a summed signal of all connected sensors with the electrical output at the lowest sensor adjusted down to and will reach its full electrical output change when all sensors are fully loaded.
For example, four 100lbs sensors are adjusted to have the same 1.98mV/V when100 lb is applied. The ﬁnal summed output will be 1.98mV/V at 400lbs, (100lbs on each sensor).
For ampliﬁed versions, voltage, or current, an extra step will be needed to set up the ampliﬁer using the ﬁnal summed signal that will go into the ampliﬁer. In the above example, it would mean setting up an ampliﬁer to a sensor with 1.98mV/V output at its fully loaded 400lb capacity.

SETUP TIPS

A system calibration at FUTEK will help save time, confusion, and potential damage by providing a plug-and-play experience with certiﬁcation. Standard NIST and A2LA calibration requests are started online at: https://www.futek.com/recalibrationterms
Solutions are available at FUTEK to connect your IAC200 to the computer or an instrument with a readout. View FUTEK instruments at: https://www.futek.com/store/instruments
The spec sheet for the IAC200 contains the wiring, DIP switch locations, and power level information.

Measuring the contents of any industrial tank, silo, or hopper requires a robust and precise system. Utilizing multiple high-capacity sensors in conjunction with powerful instrumentation can make for an effective platform.

Configuration

Remove bottom cover of IAC200 to gain access to the
IAC200 board. Connections to the IAC200 board from sensors and IAC200 output are routed to the board through black passthrough connections.

A) If present, for ampliﬁed IAC200, disconnect the ribbon cable from the center ampliﬁer to the IAC200 board on connection J6. (Applies to FSH04736 Voltage output and FSH04737 Current output versions.)
B) Enable one sensor channel at a time by placing both DIP switches to the ON position for the channel and the rest in the OFF position. As each sensor is adjusted its channel will need to be turned on and the prior channel turned off.
C) Set the output of the IAC200 for S (mV/V) for direct sensor passthrough. It will later be necessary to reconﬁgure the signal select to V (VDC) for FSH04736 ampliﬁed voltage version and I (mA) for FSH04737 ampliﬁed current version.

FUTEK IAC200 Four Channel Summing Junction Box-fig3

Wiring

A) Connect each sensor to the IAC200. +/- Excitation will be power to the sensor and +/- Signal will be the output from each sensor to the IAC200. Refer to the sensor spec sheet online for the sensor’s wiring.
B) Connect power supply to IAC200 for sensor excitation. Refer to the sensor spec sheet online for max excitation.
C) Connect Voltage meter to IAC200 output. Direct sensor output will be in mV.

FUTEK IAC200 Four Channel Summing Junction Box-fig4

Measurement

A) Place a known load on the ﬁrst sensor. Load does not have to be the full capacity of the sensor.
B) Record mV output on Voltmeter. Full capacity mV output level is a product of the sensor mV/V rating and excitation.
C) Adjust Channel Select for next channel ON and switch OFF prior channel.
D) Continue to process until all sensor individual outputs are known under the same load.

FUTEK IAC200 Four Channel Summing Junction Box-fig5

Adjustment

A) Observe lowest recorded output from connected sensors.
B) Set Channel Select DIP switches to ﬁrst Channel ON and all other Channels OFF.
C) Apply known load to the ﬁrst sensor.
D) Adjust SPAN potentiometer to adjust sensor mV output down, under load, while observing the sensor output till output is equal to lowest recorded output. Span potentiometer can only adjust outputs down.
E) Continue process of Channel Select DIP Switches, applied known load, and adjustment of mV output down on each sensor until each sensor has the same mV output under the sample applied load. To ensure best performance recheck the output of each sensor while under load and re-adjust if necessary.

FUTEK IAC200 Four Channel Summing Junction Box-fig7

Setup Finalization

A) Set Channel Select DIP switches ON for all Channels with a connected sensor. Output of IAC200 will now be one signal
of all connected sensors into one output with the same mV output level that each sensor has been adjusted down to. The combined output will now reach the set mV output when all sensors are fully loaded.
B) If present, re-connect the ribbon cable from the center ampliﬁer to the IAC200 board on connection J6.
C) Set the output of the IAC200 to S (mV/V) for non-ampliﬁed IAC200, V (VDC) for voltage ampliﬁed IAC200 and I (mA) for current ampliﬁed IAC200. FSH04735 is non-ampliﬁed S (mV/V), FSH04736 is V (VDC), FSH04737 is I (mA) ampliﬁed current version.
D) Additional amplified setup:
- The combined one mV output from all sensors will be the input to the ampliﬁer.
- To assist with ampliﬁer setup instructions, convert the adjusted one mV output of all connected sensors into mV/V by dividing the mV output by the supply voltage used during the setting of the one mV output. This will be the one mV/V combined signal going into the ampliﬁer.
- Refer to the FUTEK online support page of the IAA ampliﬁer for further instructions on how to set up the attached ampliﬁer.
- A Video of the IAA ampliﬁer series is available on the FUTEK website.
- IAA100 for Ampliﬁed IAC200 Voltage V(VDC) FSH04736
- IAA200 for Ampliﬁed IAC200 Current I(mA) FSH04737
- For legacy IAC200 see the FUTEK online CSG110 ampliﬁer webpage for setup support.