The TwinAmpTM TI27 Tension Amplifier (and TI28
powered by 24Vdc) is a versatile, dual-channel (2-channels), rack-mount tension transducer
interface for monitoring tension in any two tension-sensing zones simultaneously
on web processing machinery. Two independent and isolated tension amplifier
circuits are included on one card saving you space and money.
Each amplifier of the TwinAmp powers a pair of tension
transducers installed in the web path, and supplies an output proportional to
tension. Standard tension outputs include 0-to-10 VDC isolated and 4-to-20 mA
DC isolated for use with a drive, controller or PLC. Also, a 1 mA DC signal is
available for displaying tension on an analog or digital meter for reference by
the machine operator.
The base card for the TwinAmp is an IEC/ANSI/IEEE type 2 plug-in circuit card
6.8" x 3.9" (17.3cm x 9.9cm) for installation in a standard size 3U, 19-inch
rack. The device includes a front panel with a pull handle for easy removal.
Each amplifier circuit includes its own ZERO and CALIBRATION
Quik-CalTM push buttons, a meter damping adjustment, and
LED status lights. The Quik-Cal feature makes calibrating the device
output over your measurement range simple and fast; while the isolated,
digitally-enhanced circuitry ensures drift-free output. The TwinAmp's cost is
significantly lower than the purchase of two individual tension amplifiers with
The only difference between the TI27 and the TI28 TwinAmp
versions is their power input requirements. The TI27 operates on 115Vac 60Hz
(230Vac 50Hz optional) and the TI28 operates on 24Vdc, power supplied
The TI27 and TI28 indicators are CE-marked. They have been
thoroughly tested in all configurations and meet European low voltage and EMC
(CE mark) directives.
TwinAmpTM improves machine
operation and productivity by making it easier to run proper tension,
gain a higher level of process control and reductions of waste, web breaks, and
other web problems.
rack-mountable tension amplifiers on one card save space, installation time,
Simple to setup,
adjust and calibrate with Quik-CalTM technology.
means safe and reliable performance. Robust design with integrated isolation
and circuit stabilization including noise and surge protection for the most
demanding industrial environments.
Stability. Drift-free performance even over wide temperature swings
and negligible channel cross talk.
Packaging matches dimensional footprint of the TI11 Dual Tension Indicator
design. Allows easy replacement if necessary.
115 Volt ac 50/60 Hz power input (TI27) or 24 Vdc
Isolated Outputs. 0-to-10 Vdc and 4-to-20 mA outputs
proportional to tension. Integrated isolation from chassis and transducer
Tension Meter Output. Separate 0-to-1 mA signal
output for a tension meter.
Meter Damping. Adjustment minimizes fluctuation of
the optional analog tension meter needle.
Quik-CalTM push-button zero and calibration eliminates
pot adjustments to make calibrating simple and fast. 50:1 calibration range.
10% Calibration Weight Ratio. A 15 lb Calibration
weight allows full meter-scale output at 150 lbs tension.
230 Volt Input(230). 230Volt 50/60 Hz Ac
power input. TI27 only.
25% Calibration Weight (25CW). Used when 25% of
full-scale calibration weight is preferred to the standard 10% calibration
weight. Jumper selectable.
0-100 mA (100M) tension meter output.
Auto Zero (AZ). Unit will automatically zero
the output on each power up. Jumper selected on or off.
Extended Range (XRE). Extends the tension sensing
range of XR-equipped transducers to effectively increase the transducer
sensitivity for very low web tensions. Transducers must also have the XR
Adapter, for hard wiring. TwinAmpTM can be plugged into this card adapter instead
of a rack for hard wiring, or for mounting in your own enclosure. (DFE Part#
tension meter. 1mA, to be installed
by user (DFE Part# 722-1385). Or meter in its own enclosure (DFE
Part# 723-1453). Enclosed meter
requires a cable (DFE Part# 721-0967). Specify max scale value when ordering.
tension meter. 4-digit, LED meter (DFE Part# 723-2307). Specify scale. Requires
24 Vdc provided by user.