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Field Calibrateable Temperature Transmitters
ACI/TTU100
ACI/TTU1000



Product Description:

The ACI/TTU100 and ACI/TTU1000 are the transmitters of choice when the span calibration must be done in the field. The ACI/TTU100 is for use with a 100 ohm RTD input and the ACI/TTU1000 is for use with a 1000 Ohm RTD input. The transmitters produce a linear 4-20 mA output carried on a two-wire system. Optional voltage ranges (1-5 or 2-10 VDC) can also be ordered. The voltage input to the transmitter can vary from 7-35 VDC, can be unregulated, and is not polarity sensitive. The transmitter is linear from -50 to 392oF. The current output is unsusceptible to EMI and measurement resistances less than 800 Ohms. The transmitters are supplied uncalibrated from the factory. There is a zero and span potentiometer on the transmitter that can be adjusted to provide for any span within the sensors range. The low interaction between the zero and span make the task of field calibration quite simple. Additional options include current limiting and an AC power input.

The ACI transmitter is available in numerous configurations to satisfy all of the industry standards. The room transmitter is encased in an unobtrusive plastic enclosure and can be equipped with setpoint and override combinations. The transmitter can be ordered on a surface plate made of either stainless steel or aluminum. For measuring pipe temperature TT's can be offered with a strap. For air duct measurements the TT's are offered with 4, 8, 12, and 18" probes or as a remote probe configuration with 6' lead wires. There are also averaging configurations in both 12 and 24' lengths made of a soft, bendable copper tubing that can fit in any duct work. Lastly, the TT's can come as immersion with a 4 or 8" high quality stainless steel thermowell. All the duct and outside air configurations are available inside a weatherproof enclosure.

Product Specifications:
Input 2 wire Platinum 100/1000 Ohm RTD Transmitter Accuracy +/- 0.1% of Span
Output 2 wire, Linear 4 to 20mA DC current Sensor Accuracy0.12% @ 32F
Supply Voltage 7 to 35 VDC No Polarity Sensitivity Temperature Sensor Range -58 to 392F
Linearity +/- 0.05% of span Transmitter Operating Range 32 to 158F

RoomOutside Stainless Plate
Duct/ImmersionAveraging-12', 24'
Strap OnBullet Probe
Duct without Box


Ordering Information:
Span ConfigurationOutput
ACI/ -[]-[] -[]-[]
TTU100 (1) 40 TO 90F R-Room(1) 1 to 5VDC
TTU1000 (2) 30 TO 100F RS-Room w/Setpoint(2) 2 to 10VDC
(3) 20 TO 120F RO-Room w/Override(4) 4 to 20mA
(4) 40 TO 140F RSO-Room w/Setpoint & Override
(5) 40 TO 240F RSO-4-20 Slide-Room w/Override and 4-20mA Setpoint
(6) -30 TO 130F D-Duct-4", 8", 12",18"
(7) 0 TO 150F DO-Duct without Box-4", 8", 12", 18"
(8) Specify I-Immersion 4", 8"
A-Averaging 12', 24'
S-Strap On
O-Outside Air
SP-Stainless Plate
RP-Remote Probe (1" x 1/4" cup 6' leads)

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Last Updated 03/18/10