Termination and Troubleshooting Duct or Outside Air Humidity Transmitter with 0 to 10 or 2 to 10V Output and Optional Temperature Sensor and Terminal Strip Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com Specifications subject to change without notice. rev. 01/12/1632075_ins_hum_temp_duct_out_10_TS 1 of 4 Overview The BA/*-(H210, H212, H310 & H312) Duct and Outside Air humidity transmitters come in both 2% and 3% accuracies and transmit a 0 to 10V or 2 to 10V signal proportional to the relative humidity. They can have an optional RTD or thermistor temperature sensor mounted for use by any automation controller. They are powered from a 15 to 35VDC or a 15 to 27 VAC power source. The transmitters are housed in either a BAPI-Box (BB) or BAPI-Box 2 (BB2) Enclosure and include a terminal strip for easy field termination. Duct Unit Mounting Mount at least 3 duct diameters from humidifiers in the center of the duct wall. Drill a 1 inch hole for the probe in the duct and use two number 8 sheet metal screws to attach the sensor to the duct. Center the probe in its mounting hole. Be sure that the foam seals the hole, do not over tighten the screws. Mount in a permanently shaded area away from windows and doors. Do not mount in direct sun- light. Mount with the sensor probe pointed down. Drill a hole large enough for your sensor cable through your mounting surface. Mount the unit to the surface with the wiring knock out centered over the wiring hole. Pull the wiring into the unit and terminate using seal- ant filled connectors. Best practice is to seal the wiring hole with caulk after the wiring is installed. Be sure that the foam on the back of the unit makes a good weather tight seal. Fig. 3: Outside Humidity in a BAPI-Box (BB) Enclosure Fig. 4: Outside Humidity in a BAPI-Box 2 (BB2) Enclosure Fig. 1: Duct Humidity in a BAPI-Box (BB) Enclosure Fig. 2: Duct Humidity in a BAPI-Box 2 (BB2) Enclosure Outside Air MountingTermination and Troubleshooting Duct or Outside Air Humidity Transmitter with 0 to 10 or 2 to 10V Output and Optional Temperature Sensor and Terminal Strip Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com Specifications subject to change without notice. rev. 01/12/1632075_ins_hum_temp_duct_out_10_TS 2 of 4 Termination Table 2: Humidity Transmitter with 2 to 10VDC Output Label Purpose Note V, SIG Humidity Output 2 to 10VDC, To Analog Input of Controller +, PWR Power 10 to 35VDC or 12 to 27VAC -, SIG GND (Common) Ground for Power and Humidity Output Table 1: Humidity Transmitter with 0 to 10VDC Output Label Purpose Note V, SIG Humidity Output 0 to 10VDC, To Analog Input of Controller +, PWR Power 10 to 35VDC or 12 to 27VAC -, SIG GND (Common) Ground for Power and Humidity Output 1.8KΩOrange/Red100ΩRed/Red 2.2KΩBrown/White1KΩOrange/Orange 3KΩYellow/Black 3.25KΩBrown/Green1KΩGreen/Green 3.3KΩYellow/Brown 10K-2ΩYellow/Yellow2KΩBrown/Blue 10K-3ΩYellow/Red 10K-3(11K)ΩYellow/Blue100ΩRed/Red/Black* 20KΩWhite/White1KΩOrange/Orange/Black* 47KΩYellow/Orange 50KΩWhite/Blue 100KΩYellow/White Table 3: Temperature Sensor Lead Wire Colors Nickel RTD Silicon RTD *In the 3-Wire RTD sensors listed above, the two wires of similar color are connected together. Additional sensors are available so your sensor may not be listed on this table. ThermistorsPlatinum RTDs - 2 Wire Platinum RTDs - 3 Wire NOTE: BAPI’s2% and 3%, humidity transmitters ARE polarity sensitive as well as reverse polarity protected. Optional Temperature Sensor Output See Table 3 above for Wire Colors (Sensors are not polarity sensitive, 3 wires used for 3-wire RTDs) Humidity Output & Power See Tables 1 and 2 above for Wiring Information Fig. 5: Wiring Diagram BAPI recommends using twisted pair of at least 22AWG and sealant filled connectors for all wire connections. Larger gauge wire may be required for long runs. All wiring must comply with the National Electric Code (NEC) and local codes. Do NOT run this device’s wiring in the same conduit as AC power wiring. BAPI’s tests show fluctuating and inaccurate signals are possible when AC power wiring is in the same conduit as the signal lines. If you are experiencing any of these difficulties, please contact your BAPI representative . BAPI recommends wiring the product with power disconnected. Proper supply voltage, polarity and wiring connections are important to a successful installation. Not observing these recommendations may damage the product and void the warranty.Termination and Troubleshooting Duct or Outside Air Humidity Transmitter with 0 to 10 or 2 to 10V Output and Optional Temperature Sensor and Terminal Strip Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com Specifications subject to change without notice. rev. 01/12/1632075_ins_hum_temp_duct_out_10_TS 3 of 4 Specifications Power:15 to 35 VDC, 6mA max 15 to 27 VAC, 0.14VA max Sensor:Factory corrected @17 RH points (10 to 90% RH) HumidityCapacitive Polymer RH Accuracy ±2% @ 73°F (23°C) from 10 to 90% Drift0.5% per year Response time< 5 seconds in moving air RH LinearityNegligible, factory corrected linier from 10 to 90% RH Hysteresis Factory corrected to <1% Opt. Temp.Passive RTD or Thermistor Filter: 80 micron sintered stainless steel filter Calibrated Accuracy: Calibration @17 RH points, (10% to 90%) RH 2%2% from 10 to 90% @ 73°F (23°C), Non-condensing RH 3%3% from 10 to 95% @ 73°F (23°C), Non-condensing Thermistor±0.36ºF (0.2ºC) from 32 to 158ºF (0 to 70ºC) - High accuracy units are available RTD±0.55ºF (0.31ºC) @ 32ºF (0ºC) - High accuracy units are available Output: Selectable via wiring detail Humidity0 to 10VDC or 2 to 10V at 0 to 100% RH Opt. Temp.Resistance RTD or Thermistor Humidity Output Impedance: Voltage10KΩ Probe Length: Duct5.3” (13.5cm) Duct Insertion, 1” diameter Outside Air2.4” (6.1cm) Below Enclosure, 1” diameter Dimensions:W x H x D BAPI-Box (BB) 4.15” x 5” x 2.5”, (105.4 x 127 x 63.5mm) BAPI-Box 2 (BB2) 4.9” x 2.8” x 2.35”, (124.8 x 71.6 x 59.7mm) Termination: Terminals 14 to 26 AWG Enclosure Material: BAPI-Boxes (BB, BB2)Polycarbonate, UV resistant Enclosures Ratings: BAPI-Boxes (BB, BB2)NEMA-4, IP66, UL94V-0 Environmental Operation Range: -40º to 158ºF (-40º to 70ºC) • 0% to 100% RH Approvals:RoHsTermination and Troubleshooting Duct or Outside Air Humidity Transmitter with 0 to 10 or 2 to 10V Output and Optional Temperature Sensor and Terminal Strip Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:sales@bapihvac.com • Web:www.bapihvac.com Specifications subject to change without notice. rev. 01/12/1632075_ins_hum_temp_duct_out_10_TS 4 of 4 Humidity Diagnostics Temperature Diagnostics OutputHumidity Formula 0 to 10 VDC%RH = V/0.10 2 to 10 VDC%RH = (V-2)/0.08 Possible Solutions: - Confirm the input is set up correctly in the controller’s software - Verify that the sensor wires are not physically shorted or open - Check wiring for proper termination - Measure the temperature at the temperature sensor’s location using an accurate temperature standard. Disconnect the temperature sensor wires and measure the temperature sensor’s resistance with an ohmmeter. Compare the temperature sensor’s resistance to the appropriate temperature sensor table on the BAPI website. (Go to www.bapihvac.com; click “Resource Library” and “Sensor Specs”, then click on the type of sensor you have.) If the measured resistance differs from the temperature table by more than 5%, call BAPI technical support. Possible Problems: Controller reports Incorrect temperature Possible Problems: Unit will not operate Humidity output is at its maximum value of 10V Humidity output is at its minimum value of 0V or 2V Humidity reading in controller’s software appears to be off by more than the specified accuracy Possible Solutions: -Check for proper supply power. (See page 2 for wiring diagram and power specifications) -Make sure the humidity sensor is wired properly. -Make sure the humidity sensor is wired properly. -Check all software parameters -Determine if the sensor is exposed to an external air source different from the intended measured environment or reference device. -Check the Humidity transmitter output against a calibrated reference such as a 2% accurate hygrometer. Measure the humidity at the sensor’s location using the reference meter, then calculate the humidity transmitter output using the humidity formula at left. Compare the calculated output to the actual humidity transmitter output (see the wiring diagram on page 2 for the humidity transmitter output wire colors). If the calculated output differs from the humidity transmitter output by more than 4% to 5%, contact BAPI technical support. Filter Care A sintered filter protects the humidity sensor from various airborne particles and may need periodic cleaning. To do this, gently unscrew the filter from the probe. Rinse the filter in warm soapy water and rinse until clean. A nylon brush may be used if necessary. Gently replace the filter by screwing it back into the probe. The filter should screw all the way into the probe. Hand tighten only. If a replacement filter is needed, call BAPI. BA/HDOFS3Stainless Steel Sintered Filter Replacement for Outside Air UnitsNext >