Automation Components, Inc. 2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com Page 1 Version: 1.0 I0000818 FIGURE 1: ENCLOSURE DIMENSIONS HAZARDOUS IMMERSION SERIES Installation & Operation Instructions Phone: 1-888-967-5224 Website: workaci.com PRECAUTIONS •DO NOT RUN THE WIRING IN ANY CONDUIT WITH LINE VOLTAGE (24/120/230 VAC). GENERAL INFORMATION The ACI Hazardous Immersion Sensor is a single point temperature sensor that is designed for use with electronic controllers in commercial and industrial heating and cooling building management systems. It is available with multiple thermistor or RTD options. Hazardous Immersion sensors come standard with a heavy-duty Feraloy® Iron Alloy Connection Head that meets Class I, Division 1 & 2, Group A, B, C, D; Class II, Division 1, Groups E, F, G; Class II, Division 2, Group F & G; class III standards. For optimal temperature readings, follow these tips: • Apply thermal grease to the end of the probe before installation into thermowell (ACI Item #102595). • The tip of the thermowell should be located in the middle of the pipe. • The sensor thermowell should be installed against the ow of the water, where water temperature is well mixed (no stratication). • Make sure the entire thermowell is immersed. If the thermowell is longer than the pipe diameter, the thermowell should be installed in an elbow or Tee. THERMOWELL INSTALLATION ACI’s Hazardous Immersion sensors are made to install into a ½” NPT female thread. Typically a Threadolet or Tee is installed into the pipe, but a hole can also be drilled and tapped. The pipe/system will need to be drained, unless a Hot Tap is being used. The recommend drill size is 23/32 in. (18 mm). Drill the hole, and tap the hole with ½”-14NPT. Always use proper thread sealants on tapered pipe threads of the thermowell. Screw the thermowell into the Threadolet, Tee, or tapped hole, using a wrench to tighten it rmly. FIGURE 2: T-PIECE ASSEMBLY 4.42" (112.25 mm) 1.56" (39.69 mm) 3.13" (79.38 mm) 2.21" (56.13 mm) 3.13" (79.375 mm) 1.56" (39.688 mm) T-PIPE FITTING ADAPTER FLOWAutomation Components, Inc. 2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com Page 2 Version: 1.0 I0000818 PROBE AND INSERTION LENGTH The immersion sensors “-I” include a welded thermowell but can be ordered without the thermowell “-INW” version. The “-INW” includes a standard ½” NPS process thread to be used with a machined thermowell or existing thermowell application. Verify the existing thermowell insertion length of the pipe is suitable for your selected Immersion. The Hazardous Immersion Sensors are available in 2.5”, 4”, and 6” insertion lengths. There are 1/2” NPT tappings located at the top and bottom of the enclosure. Seal ttings, intrinsically safe barriers, and explosion proof ex ttings not provided by ACI. Note: *Fabricated (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. Fabricated thermowells are intended for tank, or low to no ow, applications. THERMOWELL INSTALLATION (Continued) Refill the system and check for leaks. Best practice is to apply thermal grease to the end of the probe, but not required. Insert and push the sensor probe into the thermowell. Turn the sensor probe assembly clockwise to tighten down completely. Refer to the Wiring Instructions (p. 3) to make necessary connections. CONDUIT FIGURE 4: THREADOLET ASSEMBLY FIGURE 3: ASSEMBLY FIGURE 5: ELBOW ASSEMBLY PIPE INSULATION HAZARDOUS IMMERSION SENSOR HAZARDOUS IMMERSION SENSOR PIPE WALL PIPE WALL FLOW THERMOWELL THERMOWELL THERMOWELL CONDUIT THREADOLETAutomation Components, Inc. 2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com Page 3 Version: 1.0 I0000818 Thermistor or RTD 2-Wire Wire Nut Wire Nut RTD 3-Wire Same Color Wires Wiring from Controller Analog Input Wiring from Controller Analog Input FIGURE 6: 2-WIRE THERMISTOR or RTD WIRING FIGURE 7: 3-WIRE RTD WIRING • Verify sensor wiring to controller is not damaged and has continuity • Verify sensor or wires are not shorted together • Verify controller is setup for correct sensor curve • Disconnect wires from sensor terminal block, tighten terminal block screws down, and take a resistance(ohm) reading with a multimeter • Compare the resistance reading to the Temperature Vs Resistance Curves online: http://www.workaci.com/content/thermistor-curves-0 • Verify proper mounting location to conrm no external factors • Sensor or wires are open • Sensor or wires are shorted together • Bad wire connections • Condensation on PCB board TROUBLESHOOTING PROBLEM Sensor Reading Is Incorrect Sensor Reads Infinity/Very High Resistance Sensor Reads Low Resistance Erratic Readings WIRING INSTRUCTIONS All thermistor type units are supplied with (2) ying lead wires, and all RTD’s are supplied with (2) or (3) ying lead wires – see FIGURES 6 and 7 (right). The number of wires needed depends on the application. Connect thermistor/RTD wire leads to controller analog input wires using wire nuts, terminal blocks, crimp connectors, or soldering. If the controller requires a (2) wire input for a RTD, connect the (2) common wires (same color) together. All wiring must comply with local codes and National Electric Code. Note: When using a shielded cable, be sure to connect only (1) end of the shield to ground at the controller. Connecting both ends of the shield to ground may cause a ground loop. When removing the shield from the sensor end, make sure to properly trim the shield to prevent any chance of shorting. Note: If the controller requires a (2) wire input for a RTD, connect the (2) common wires (same color) together. If the controller requires (3) wires, use (3) individual wires. W.E.E.E. DIRECTIVE At the end of their useful life the packaging and product should be disposed of via a suitable recycling centre. Do not dispose of with household waste. Do not burn. WARRANTY The ACI Hazardous Immersion Series temperature sensors are covered by ACI’s Five (5) Year Limited Warranty, which is located in the front of ACI’S SENSORS & TRANSMITTERS CATALOG or can be found on ACI’s website: www.workaci.com.PRODUCT SPECIFICATIONS Automation Components, Inc. 2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com Page 4 Version: 1.0 I0000818 A/AN (Type III): 10 K nominal (White/White) A/CP (Type II): 10 K nominal (White/Green) A/CP-HT (Type II): 10 K nominal (White/Green) A/10K-E1: 10 K nominal (Orange/Gray) A/1.8K Series: +/- 0.5 °C @ 25 °C (77 °F) and (+/-1.0 °C) (+/-1.8 °F) A/100: 100 nominal +/- 0.06% Class A (Tolerance Formula: +/- °C = (0.15 °C + (0.002 * |t|)) where |t| is the absolute value of Temperature above or below 0 °C in °C) @ -40 °C (-40 °F): +/- 0.23°C (+/- 0.414 °F) @ 0 °C (32 °F): +/- 0.15°C (+/- 0.27 °F) One -40 to 85 °C (-40 to 185 °F) 10 to 95% RH, non-condensing “-D” Enclosure: Feraloy® Iron Alloy, -50 to 60 °C (-58 to 140 °F), NEMA 3, 4, 7ABCD, 9EFG “-I” or “-INW” Enclosure: Feraloy® Iron Alloy, -50 to 60 °C (-58 to 140 °F), NEMA 3, 4, 7ABCD, 9EFG “-R” Enclosure: Copper-Free Aluminum, -50 to 60 °C (-58 to 140 °C), NEMA 3, 4, 7ABCD, 9EFG (see Enclosure Specifications) CL. I, Div. 1 & 2, Groups A, B, C, D CL. II, Div. 1, Groups E, F, G CL. II, Div. 2, Groups F, G CL. III “-R” Enclosure: UL 1203 | “-D” , “-I” or “-INW” Enclosure: UL 886 C22.2 No. 30 Two | 1/2” NPT (National Pipe Tapered) Female Hubs 0.250” (6.35mm) | ½” NPT Thread 304 Stainless Steel 304 Stainless Steel | 0.260” ½” NPS Female Thread | ½” NPT Male Thread A/1.8K: 1.8 K nominal (Red/Yellow) A/3K: 3 K nominal (White/Brown) A/20K: 20 K nominal (Brown/Blue) A/100KS: 100 K nominal (Black/Yellow) A/10K-E1 Series: +/- 0.3 °C (+/- 0.54 °F) All Else: +/- 0.2 °C (+/- 0.36 °F) A/1K: 1 K nominal @ 200 °C 392 °F): +/- 0.55 °C (+/- 0.99 °F) SENSOR NON-SPECIFIC INFORMATION Number Sensing Points: Storage Temperature Range: Operating Humidity Range: Enclosure Specifications: (Temperature, NEMA Ratings) Operating Temperature Range: Enclosure Explosion Proof Rating: Enclosure Dust-Ignition Proof Rating: Enclosure Raintight Rating: Enclosure Wet Locations Rating: Enclosure UL Standards: Enclosure CSA Standards: Enclosure Hubs | Hub Size: Probe Diameter | Sensor Threads: Probe Material: Thermowell Material | Bore Diameter: Thermowell Instrument Thread | Process Thread: THERMISTOR Sensor Output @ 25ºC (77ºF): (Lead Wire Colors) Accuracy 0-70ºC (32-158ºF): PLATINUM Sensor Output @ 0°C (32°F): Accuracy:Next >