- About
- Description
- Specifications
- Features
- Downloads
- Shipping




Images are for illustration only and may not reflect the actual product. Refer to the description or specs.
ACI 120300 A/1K-2W-I-4"-BB 2 Wire,1K Ohm Immersion RTD
Normally In Stock
Code: 174740
ACI 120300 1,000 Ohm (Two Wires) RTD, Immersion, Welded Well, 4", NEMA 3R Enclosure
Condition: New
Usually ships Same Day or Next Day$65.88
Sale Price
$54.90
Tariff Status
Tariff may apply if shipping to the United States. Tariff costs are calculated and will be displayed in the shopping cart.
Need a large quantity or a custom solution?
Add this product to your job, favorites list or request a quick quote for volume pricing and lead time information. Our team is ready to assist with any special requirements.
Description
The metal bell box, with well configuration has a NEMA 3R rating and is designed for wet environments. It has male 1/2 inch NPT threads and the sensing element is double encapsulated to avoid sensor failures caused by moisture infiltration. ACI also standardizes with etched Teflon lead wires and 2 part wells. ACI immersion temperature sensors are designed for HVAC, Building Automation Systems, and light industrial applications. Specific applications include: chillers, hot water systems, tanks, and boilers. NOTE: Welded thermowells are not intended for moving water or high pressure service. Fluid velocity and wake frequency are primary factors in well failure. Machined thermowells should be used in these types of applications.
Specifications
Manufacturer
ACI
Component
RTD
(Instrument-Sensor) Mounting
Immersion
(Instrument-Sensor) Composition
Platinum
(Instrument-Sensor) Type
2 Wire-1K Ohm
Features
The ACI Platinum Immersion Series features a stainlesssteel probe with Etched Teflon colored lead wires todifferentiate the different sensor types
The three-wire“-3W” option should be ordered when using with a 3-Wiretemperature transmitter or sensor configuration on yourbuilding management system or PLC (Programmable LogicController)
The purpose of the 3rd wire is to compensate forexternal lead wire resistance that affects the sensor output.ACI recommends the use of 1.02 mm (18 AWG) lead wiresto reduce the external lead wire resistance when using aPlatinum RTD
The sensors in this series are manufacturedusing ACI’s proven double encapsulation process toeliminate the effects of moisture upon the sensors and toincrease thermal response times using our high quality,thermally conductive epoxy
The immersion sensors “-I”include a welded thermowell but can be ordered without thethermowell “-INW” version
The “-INW” includes a standard½ in NPS process thread to be used with an optionalmachined thermowell or an existing thermowell application.Optional NEMA/IP rated weather proof enclosures and NISTCertificates are available as referenced on this product datasheet.
Downloads

Code: 174740
ACI 120300 A/1K-2W-I-4"-BB 2 Wire,1K Ohm Immersion RTD
$65.88
Sale Price
$54.90