ACI Transmitter Rigid Probe Averaging

Features

  • Two-wire, 4 to 20 mA loop-powered output signal with an optional 3-Wire voltage output signal available.
  • Designed to be installed in small to medium size ducts to give you a better average compared to that of a single-point sensor.
  • All transmitters include Zero and Span adjustments for field calibration and are calibrated using NIST Certified Calibration equipment.
  • The 1K Ohm Rigid Averaging sensor assemblies include a continuous sensing element that covers the entire length of the stainless steel probe.
  • Manufactured using colored Etched Teflon lead wires to differentiate between the different sensor types.
  • All units are hermetically sealed using our epoxy material to eliminate the effects of moisture on the sensors.
  • The Rigid Averaging transmitters include a foam pad to properly seal the duct and limit vibration once installed.
  • Optional NEMA/IP-rated weatherproof enclosures are available.
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Automation Components, Inc. (ACI) creates, manufactures, and distributes building automation sensors for the heating, ventilation, and air conditioning (HVAC) Industry. Dpstar is ACI Authorised Distributor in Malaysia. Our product lines include Temperature Sensors, Relative Humidity Sensors, Current Sensors, Pressure Sensors, Gas Sensors, and Wireless Sensors.

The ACI Transmitter Rigid Averaging Series features a two-wire, 4 to 20 mA loop-powered output signal with an optional 3-Wire voltage output signal available. The Rigid Averaging sensors are designed to be installed in small to medium size ducts to give you a better average compared to that of a single-point sensor. All transmitters include Zero and Span adjustments for field calibration and are calibrated using NIST Certified Calibration equipment. ACI recommends the use of an 18 to 22 AWG shielded cable for all temperature transmitter installations to help eliminate the possibility of noise being introduced onto the signal lines. The 1K Ohm Rigid Averaging sensor assemblies include a continuous sensing element that covers the entire length of the stainless steel probe and are manufactured using colored Etched Teflon lead wires to differentiate between the different sensor types. All units are hermetically sealed using our epoxy material to eliminate the effects of moisture on the sensors. The Rigid Averaging transmitters include a foam pad to properly seal the duct and limit vibration once installed. Optional NEMA/IP-rated weatherproof enclosures are available as specified on the back of the product datasheet. For best accuracy, ACI recommends the use of the A/TTM Series Matched transmitters with a 3 or 5 Point NIST Calibration Certificate since they include a second calibration process in which the RTD and transmitter are calibrated together as a system. On larger ducts, ACI’s bendable copper averaging transmitter should be used for better coverage and control of the air inside of the duct.

Applications

  • Roof Top Units
  • Air Handlers
  • Monitoring Supply/Discharge/Return/Mixed Air Temperatures
  • Data Centers
  • Hospitals

The ACI Transmitters Rigid Probe Averaging Series is covered by ACI’s Five (5) Year Limited Warranty.

Specification

Transmitter Supply Voltage | Supply Current +8.5 to 32 VDC (Reverse Polarity Protected) | 25 mA minimum
250 Ohm Load: +13.5 to 32 VDC | 500 Ohm Load: +18.5 to 32 VDC
Maximum Load Resistance (Terminal Voltage – 8.5 V) | 0.020 A
Output Signals Current: 4-20 mA (2-Wire Loop Powered) | Voltage: 1-5 VDC or 2-10 VDC (3-Wires)
Calibrated Accuracy | Linearity1 Temp. Spans < 500ºF (260ºC): +/- 0.2%
Thermal Drift2 Temp. Spans < 100ºF (38ºC): +/- 0.04%/ºF | Temp. Spans > 100ºF (38ºC): +/- 0.02%
Min/Max Temperature Spans Minimum Span: 50ºF (28ºC) | Maximum Span: 400ºF (204ºC)
TTM100/TTM1K NIST Certification Points 3 Point NIST: 20%, 50% & 80% of span | 5 Point NIST: 20%, 35%, 50%, 65%, 80% of span
Warm Up Time | Warm Up Drift 10 Minutes | +/- 0.1%
Transmitter Operating Temperature Range -40ºF to 185ºF (-40 to 85ºC)
Transmitter Operating Humidity Range 0 to 90%, non-condensing
Connections | Wire Size Screw Terminal Blocks (Polarity Sensitive) | 16 AWG (1.31 mm2) to 26 AWG (0.129 mm2)
Terminal Block Torque Rating 0.37 ft-lb (0.5 Nm ) nominal
Sensor Type | Sensor Curve | Sensing Points Platinum RTD | PTC (Positive Temperature Coefficient) | Continuous
Number Wires | Wire Colors Three | Black/Black/White (Polarity Sensitive)
Sensor Output @ 0°C (32°F) 1000 Ohms nominal
Sensor Accuracy +/- 0.1% @ 0ºC (32ºF) | +/- 0.25% @ 21ºC (70ºF) | +/- 1.0% @ 130ºC (266ºF)
Din Standard | Temperature Coefficient DIN EN 60751 (IEC 751) | 3850 ppm / ºC
Response Time (63% Step Change) 15 Seconds nominal
Sensor Operating Temperature Range -40 to 135ºC (-40 to 275ºF)
Enclosure Specifications (Operating
Temperature, Material, Flammability, NEMA/IP
Ratings)		 “-GD” Enclosure: -40 to 115ºC (-40 to 239ºF); Galvanized Steel; NEMA 1 (IP10)
“-PB” Enclosure: -30 to 90ºC (-22 to 194ºF); ABS Plastic; UL94-HB; Plenum Rated
“-BB” Enclosure: -40 to 115ºC (-40 to 239ºF); Aluminum; NEMA 3R (IP 14)
“-4X” Enclosure: -40 to 70ºC (-40 to 158ºF); Polystyrene Plastic; UL94-V2; NEMA 4X (IP 66)
Storage Temperature Range -40 to 80ºC (-40 to 176ºF)
Operating Humidity Range 5 to 90% RH, non-condensing
Probe Diameter | Probe Material 0.250” (6.35mm) | 304 Stainless Steel
Fitting Material | Flammability Rating Polyamide 66 (High Performance Nylon 66) | UL94-HB
Fitting Thread Size 1/8”-27 NPSM
Foam Pad Material | Flammability Rating: Neoprene/EPDM/SBR Polymer | UL94-HBF; FMVSS-302; MIL-R-6130C
Lead Length | Conductor Size 12” (30.5 cm) | 22 AWG (0.65mm)
Lead Wire Insulation | Wire Rating Etched Teflon (PTFE) Colored Leads | Mil Spec 16878/4 Type E
Conductor Material Silver Plated Copper
Product Dimensions | Product Weight See table on back of Product Data sheet
Agency Approvals RoHS2, WEEE

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