Automation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 1DUCT HUMIDITY SERIESInstallation & Operation InstructionsVersion 6.0I0000546GENERAL INFORMATIONThe A/RH Duct Series Sensor is a Relative Humidity transmitter that can be powered with either an AC or DC supply voltage. The RH Duct transmitter is eld selectable with a 4-20 mA, 0-5 VDC, or 0-10 VDC output signal that is equivalent to 0 to 100% RH. This sensor is designed for use with electronic controllers in commer-cial heating and cooling building management systems. All units are shipped from the factory set up for a 4-20 mA output. The transmitter can also include an optional temperature sensor for monitoring the space temperature.For optimal readings, follow these tips: •The sensor should be mounted in the middle of the duct where air circulation is well mixed (no stratication), and not blocked by obstructions. Stratication and obstructions can cause sensing errors. An example is downstream from a heating or cooling coil.•Duct probe should be placed (3) to (4) duct segments down from any bend or obstructions and away from 90° bends. •Mount the sensor on the top or sides of duct work; mounting on the bottom risks damage due to moisture.MOUNTING INSTRUCTIONSThe Euro enclosure (-EH) requires a 0.875” (22.23 mm) hole in the duct, and the Nema 4X enclosure (-4X) requires a 1.25” (31.75 mm) hole - see FIGURE 1. After drilling, insert the probe through the hole until the foam pad is tight to the duct. Drill pilot holes for the mounting screws. Use the enclosure as a guide, or use the dimensions listed on the right to measure out.Now fasten and insert mounting screws through the mounting holes and tighten until the unit is held rmly to the duct. Refer to Wiring Instructions (p. 2-4) to make necessary connections.FIGURE 1: ENCLOSURE DIMENSIONSEURO (-EH)NEMA (-4X)2.55"(64.77 mm)1.96"(49.78 mm)1.90"(48.28 mm)4.30"(109.22 mm)3.80"(96.56 mm)6.96"(176.66 mm)2.21"(56.07 mm)2.12"(53.72 mm)ø: 0.75"(19.05 mm)ø: 1.08"(27.50 mm)0.98"(24.89 mm)3.11"(78.99 mm)1.56"(39.50 mm)3.70"(93.98 mm)7.94"(201.60 mm)Phone: 1-888-967-5224Website: workaci.comAutomation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 2Version 6.0I0000546NEMA (-4X)NEMA (-4X)EURO (-EH)EURO (-EH)ø: 0.875"(22.23 mm)ø: 1.25"(31.75 mm)FIGURE 3: MOUNTING DIMENSIONSFIGURE 2: TEMPERATURE WIRINGWIRING INSTRUCTIONSPRECAUTIONS•Do not run the temperature sensor wiring in any conduit with line voltage (24/120/230 VAC) if utilizing resistance temperature signal.•Remove power before wiring. Never connect or disconnect wiring with power applied.•When using a shielded cable, ground the shield only at the controller end. Grounding both ends can cause a ground loop.•It is recommended you use an isolated UL-listed class 2 transformer when powering the unit with 24 VAC. Failure to wire the devices with the correct polarity when sharing transformers may result in damage to any device powered by the shared transformer.•If the 24 VDC or 24VAC power is shared with devices that have coils such as relays, solenoids, or other inductors, each coil must have an MOV, DC/AC Transorb, Transient Voltage Suppressor (ACI Part: 142583), or diode placed across the coil or inductor. The cathode, or banded side of the DC Transorb or diode, connects to the positive side of the power supply. Without these snubbers, coils produce very large voltage spikes when de-energizing that can cause malfunction or destruction of electronic circuits.RELATIVE HUMIDITY WIRING INSTRUCTIONSOpen the cover of the enclosure. ACI recommends 16 to 26 AWG twisted pair wires or shielded cable for all transmitters. Twisted pair may be used for 2-wire current output transmitters or 3-wire for voltage output. Refer to FIGURE 5 (p. 3) for wiring diagrams.TEMPERATURE WIRING INSTRUCTIONSACI recommends 16 to 26 AWG twisted pair wires or shielded cable for all temperature sensors. ACI recommends a separate cable be pulled for Temperature signal only. Temperature Signal wiring must be run separate from low and high voltage wires (24/120/230VAC). All ACI thermistors and RTD temperature sensors are both non-polarity and non-position sensitive. 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 FIGURE 6 (p. 3). The number of wires needed depends on the application. Connect thermistor/RTD wire leads to control-ler analog input wires using wire nuts, terminal blocks, or crimp style connectors. All wiring must comply with local and National Electric Codes. After wiring, attach the cover to the enclosure.TEMPERATUREWIRE LEADSTEMPERATUREWIRE LEADSAutomation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 313427658ONPUSH TAB IN AND PULL UP ON THE SENSORCABLE TO REMOVE FROM J13 CONNECTORFACTORY USE ONLYFACTORY USE ONLYWIRE CONNECTIONSVersion 6.0I0000546ON42315678FACTORY USE ONLYSW1J13J14J24-20mAVINCOMVOUTTB1SPANWIRE CONNECTIONSZEROP1J134-20mAVINTB1SPANZEROJ14P2P1SW1J13J2COMVOUTSQUARE PCB (-4X ENCLOSURE)ROUND PCB (-EH ENCLOSURE)FIGURE 4: PRINTED CIRCUIT BOARDTHERMISTOR ORRTD 2WIREWIRE NUTRTD 3WIRESAME COLOR WIRESWIRE NUTWIRING FROM CONTROLLERANALOG INPUTWIRING FROM CONTROLLERANALOG INPUTFIGURE 6: TEMPERATURE WIRING3-WIRE RTD WIRING2-WIRE THERMISTOR or RTD WIRINGFIGURE 5: OUTPUT SIGNALSOPTIONAL TEMP. SENSOR (-)CONNECT TO THE 2 or 322 AWG FLYING LEADSOPTIONAL TEMP. SENSOR (+)4-20mASUPPLY GROUND / SIGNAL COMMONDC SUPPLY VOLTAGE4-20 mA OUTPUTTB1COMVINVOUTOPTIONAL TEMP. SENSOR (-)VOLTAGE OUTPUT SIGNAL3 WIRE CURRENT OUTPUT SIGNAL2 WIRE CURRENT OUTPUT SIGNALCONNECT TO THE 2 or 322 AWG FLYING LEADSOPTIONAL TEMP. SENSOR (+)4-20mA0-10 or 0-5 VDC OUTPUT SIGNALSUPPLY GROUND / SIGNAL COMMONAC or DC SUPPLY VOLTAGETB1COMVINVOUTOPTIONAL TEMP. SENSOR (-)CONNECT TO THE 2 or 322 AWG FLYING LEADSOPTIONAL TEMP. SENSOR (+)4-20mADC SUPPLY VOLTAGE4-20 mA OUTPUTTB1COMVINVOUTPUSH TAB IN AND PULL UP ON THE SENSORCABLE TO REMOVE FROM J13 CONNECTORAutomation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 4WIRING INSTRUCTIONS (Continued)TEMPERATURE WIRING INSTRUCTIONS (Continued)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 causea 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 - see FIGURE 6 (p. 3).Version 6.0I0000546REVERSE ACTING OUTPUT (Continued)To change the transmitter to reverse acting or back to direct acting, set switch 4 to ON to put the unit in setup mode. After switch 4 is on, turning switch 2 to ON will put the unit in direct/reverse acting mode. When switch 2 is set to ON, the output can be used to show if the unit is in direct or reverse acting mode. For direct acting, the output will be 1 V for 0-5 V, 2 V for 0-10 V, and 7.2 mA for 4-20 mA. For reverse acting the output will be 4 V for 0-5 V, 8 V for 0-10 V, and 16.8 mA for 4-20 mA. With switches 2 and 4 ON, each time switch 5 is set to ON the output will change to reverse acting or direct acting. To reset the unit to the default setting, toggle both switches 5 and 6 ON then OFF while both switches 2 and 4 are ON.When all calibration is completed, remember to place the switches back into the positions that correspond to the output needed as shown in FIGURE 7.HUMIDITY REVERSE ACTING OUTPUTThe output is direct acting and can be changed to reverse acting mode. The output range stays the same but the corresponding RH value is opposite. Example: Direct Acting (DA) 0-10 V output mode, 0 V = 0% RH and 10 V = 100% RH Reverse Acting (RA) 0-10 V output mode, 0 V = 100% and 10 V = 0%OUTPUT SIGNALSSwitches 6, 7, and 8 are used to set the RH output signal. Refer to FIGURE 7 for switch settings.RH CALIBRATION INSTRUCTIONSNote: This is only a single point calibration. All transmit-ters are factory calibrated to meet/exceed published specications. Field adjustment should not be necessary.The dipswitch allows the user to calibrate the sensor through the software. Setting switch 4 ON will put the transmitter into setup mode allowing the increment and decrement to work. Once in setup mode, the output will change to 50% (2.5 V for 0-5 V, 5 V for 0-10 V, 12 mA for 4-20 mA). Each increment or decrement step will cause the output to change by 0.1 V for 0-5 V, 0.2 V for 0-10 V, and 0.32 mA for 4-20 mA in setup mode. This can be used to show the user how far oset the transmitter is. To see the starting point again set switch 1 ON. This will show the 50% output again. When the unit is out of setup mode the output will go back to RH output. The maximum oset is 10%. There can be a total of 20 increments.FIGURE 7: OUTPUT SELECTION SWICHES ON2681OFF0-10 VDC Output0-5 VDC Output43OFF5ON7ON2378ON1456OFFON484-20 mA Output1ON23567Automation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 5WARRANTYThe ACI Duct Series RH 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.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.Version 6.0I0000546RH CALIBRATION INSTRUCTIONS (Continued)Increment RH Output This will shift the RH output linearly up in 0.5% steps. Switch 4 must be set to ON rst. After switch 4 is on, each time switch 5 is set ON the RH output will increase by 0.5%. The increase goes into eect each time switch 5 is set to ON. Decrement RH Output This will shift the RH output linearly down in 0.5% steps. Switch 4 must be set to ON rst. After switch 4 is on, each time switch 6 is set ON the RH output will decrease by 0.5%. The decrease goes into eect each time switch 6 is set to ON. Reset RH Output This will reset the RH output back to the original calibration. Switch 4 must be set to ON rst. After switch 4 is on, toggle switches 5 and 6 ON then OFF. After 5 and 6 are OFF, slide switch 4 OFF.When all calibration is completed, remember to place the switches back into the positions that correspond to the output needed as shown in FIGURE 7.FIGURE 8: TEST SELECTION SWITCHESTEST INSTRUCTIONSTest mode will make the transmitter output a xed 0%, 50%, or 100% value. The sensor will not aect the transmitter output. This is used for troubleshooting or testing only. Switches 1, 2, and 3 are used for test mode. The output will be a xed 0%, 50%, or 100% signal that corresponds to the output selected with switches 6, 7, and 8. Refer to FIGURE 8 for switch settings.ON2681OFF50% RH Output100% RH Output43OFF5ON7ON2378ON1456OFFON480% RH Output1ON23567Formula:Example:RH CONVERSION FORMULAS4-20 mA([mA signal] -4) / 0.16 = percent RH12 mA output signal(12 - 4) / 0.16 = 50% RH0-5 VDC[VDC signal] / 0.05 = percent RH1.25 vdc output signal1.25 / 0.05 = 25% RH0-10 VDC[VDC signal] / 0.10 = percent RH7.50 vdc output signal7.50 / 0.10 = 75% RHAutomation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 6PRODUCT SPECIFICATIONSVersion 6.0I00005464-20 mA: 250 Load: 15 - 40 VDC / 18 - 28 VAC | 500 Load: 18 - 40 VDC / 18 - 28 VAC0-5 VDC: 12 - 40 VDC / 18 - 28 VAC | 0-10 VDC: 18 - 40 VDC / 18 - 28 VACVoltage Output: 8 mA max (0.32 VA) | Current Output: 24 mA max (0.83 VA)4-20 mA: 700 maximum | 0-5 VDC or 0-10 VDC: 4K Minimum2-wire: 4 - 20 mA (Default) | 3-wire: 0-5 or 0-10 VDC and 4 - 20 mA (Field Selectable)+/- 1% over 20% RH Range between 20 to 90% | +/- 2%, 3%, or 5% from 10 to 95%0-100%0 to 95% RH, non-condensing (Conformally Coated PCB’s)-40 to 140 °F (-40 to 60 °C)-40 to 149 °F (-40 to 65 °C)Less than 2% drift / 5 years | 0.5% RH | 0.1% RH20 Seconds TypicalCapacitive with Hydrophobic Filter30 Minutes (Recommended time before doing accuracy verication)Screw Terminal Blocks (Polarity Sensitive) | 16 (1.31 mm²) to 26 AWG (0.129 mm²)4.43 to 5.31 lb-in (0.5 to 0.6 Nm)“-4X” Enclosure: Polystyrene Plastic, UL94-V2, NEMA 4X (IP 66)“-EH” Enclosure: ABS Plastic with UV Protectant, UL94-VO“-EH” Enclosure: 304 Series Stainless Steel | 304 Series Stainless Steel“-4X” Enclosure: Schedule 40 PVC (White) | Slotted PVC without lterA/CSI: 10 K nominal (Green/Yellow)A/10KS: 10 K nominal (White/Blue)A/10K-E1: 10 K nominal (Gray/Orange)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@ 60 °C (140 °F): +/- 0.27 °C (+/- 0.49 °F)@ 21.1 °C (70 °F): +/- 0.17 °C (+/- 0.34 °F)@ 54.4 °C (130 °F): +/- 0.56 °C (+/- 1. 00°F)SENSOR SPECIFICRH Supply Voltage: (Reverse Polarity Protected)RH Supply Current (VA): RH Output Load Resistance: RH Output Signal: RH Accuracy @ 77°F (25°C): RH Measurement Range:Operating RH Range: Operating Temperature Range:Storage Temperature Range:RH Stability | Repeatability | Sensitivity:RH Response Time (T63):RH Sensor Type:RH Transmitter Stabilization Time:RH Connections | Wire Size:RH Terminal Block Torque Rating:Enclosure Specifications (Flammability, Temperature, NEMA/IP Rating): Sensing Tube Material | Filter Material: SENSOR NON-SPECIFICLead Wire LengthInsulation RatingTHERMISTOR Sensor Output @ 25 °C (77 °F):(Lead Wire Colors)Accuracy @ 0-70 °C (32 - 158 °F):PLATINUMSensor Output @ 0 °C (32 °F):Accuracy:NICKEL Sensor Output @ 21.1 °C (70 °F):Accuracy:BALCO Sensor Output @ 21.1 °C (70 °F):Accuracy:14” (35.6 cm) | 22 AWG (0.65 mm)Etched Teon (PTFE) Colored Leads | Mil Spec 1678/4 Type EA/1.8K: 1.8 K nominal (Red/Yellow) A/3K: 3 K nominal (White/Brown)A/AN (Type III): 10 K nominal (White/White)A/AN-BC: 5.238 K nominal (White/Yellow)A/CP (Type II): 10 K nominal (White/Green)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): +/- 0.23ºC (+/- 0.414ºF)@ 0 °C (32 °F): +/- 0.15 °C (+/- 0.27 °F)1 K nominal (Red/Red)@ -40 °C (-40 °F): +/- 1.52 °C (+/- 2.73 °F)@ 0 °C (32 °F): +/- 0.4 °C (+/- 0.72 °F)1 K nominal (Orange/Yellow)@ 21.1 °C (70 °F): +/- 1%RELATIVE HUMIDITY SPECIFICATIONSTEMPERATURE SENSOR SPECIFICATIONS (OPTIONAL)Automation Components, Inc.2305 Pleasant View Road | Middleton, WI 53562Phone: 1-888-967-5224 | Website: workaci.comPage 7Version 6.0I0000546TROUBLESHOOTINGTEMPERATURE (Optional) PROBLEMSensor reading is incorrectSensor reads infinity/very high resistanceSensor reads low resistanceErratic readingsSOLUTION(S)•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 sensor wires, 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 connectionsHUMIDITY READING PROBLEMNo ReadingErratic readingsInaccurate readingsSOLUTION(S)•Check that you have the correct supply voltage at the power terminal blocks.•Check that wiring configurations and all DIP switch settings are as in FIGURE 5 and 7.•Verify that the terminal screws are all connected tightly and that all of the wires are firmly in place.•Verify that all of the wires are terminated properly.•Make sure that there is no condensation on the board.•Check that the input power is clean. In areas of high RF interference or noise, shielded cable may be necessary to stabilize signal.•Verify proper mounting location to conrm no external factors (see mounting locations above).•Check the output (voltage or current) against a highly accurate recently calibrated secondary reference. Measue RH at the location of the sensor using the secondary reference, then calculate the RH percentage using the RH CONVERSION FORMULAS (p. 5). Compare the calculated output to reference. •If the sensor is brand new, leave the sensor powered for at least 30 minutes to stabilize. •If you suspect that the transmitter is not reading within the specied tolerance, please contact ACI for further assistance.Next >