MADE IN User’s Guide Shop online at www.omega.com e-mail: info@omega.
OMEGAnet ® Online Service www.omega.com Internet e-mail info@omega.com Servicing North America: USA: ISO 9001 Certified Canada: One Omega Drive, Box 4047 Stamford CT 06907-0047 Tel: (203) 359-1660 e-mail: info@omega.com 976 Bergar Laval (Quebec) H7L 5A1, Canada Tel: (514) 856-6928 e-mail: info@omega.
HX93A, HX93DA SERIES RH/Temperature Transmitter Section TABLE OF CONTENTS Page 1. General Description .................................................................... 1 2. Unpacking .................................................................................... 1 3. Theory of Operation ................................................................... 2 4. Mounting ..................................................................................... 3 5. Electrical Connections .......
FIGURES ii HX93A, HX93DA SERIES RM/Temperature Transmitter Figure Page Figure 1 Basic Transmitter Set-up With Current Loop Output .............................................. 2 Figure 2 Wall Mount Model Dimensions ...................................... 3 Figure 3 Duct Mount And Remote Probe Model Dimensions ............................................................ 3 Figure 4 Current Transmitter Wiring Example (4 - 20 mA) ......................................................................
HX93A, HX93DA SERIES RH/Temperature Transmitter 1 1. General Description The OMEGA® HX93A and HX93DA Series Relative Humidity/ Temperature Transmitter’s provide a linearized and temperature compensated output signal of 4 to 20 mA or 0 to 1 Vdc depending upon the model selected for both relative humidity and temperature measurement. The output signals have been calibrated and scaled 0 to 100% for Relative Humidity and –20 to 75ºC for temperature.
3 HX93A, HX93DA SERIES RH/Temperature Transmitter continued from page 1 HX15AV-W Wall mount “High Ambient Temperature” application RH/Temperature transmitter (dual 0 to 1 Vdc Output) HX15AC-W Wall mount “High Ambient Temperature” application RH/Temperature transmitter (dual 4 to 20 mA Output) HX15AV-D Duct mount “High Ambient Temperature” application RH/Temperature transmitter (dual 0 to 1 Vdc Output) HX15AC-D Duct mount “High Ambient Temperature” application RH/Temperature transmitter (dual 4 to 20 mA O
HX93A, HX93DA SERIES RH/Temperature Transmitter 4 Complimentary Instruments Power Supply, OMEGA® Part No.: PSU-93 Csi32 Series Panel Meters and Controllers Recommended Accessories Shielded Transmitter Cable, OMEGA® Part No.: TX4-100 (100 ft) RH Calibration Kit, OMEGA® Part No.: HX92-CAL 4. Mounting OMEGA’s HX93A and HX93DA transmitter’s are designed for either wall, duct or remote probe mounting depending upon model.
5 HX93A, HX93DA SERIES RH/Temperature Transmitter 5. Electrical Connections CAUTION All electrical connections and wiring should be performed by a suitably trained professional only. Models: HX93AC, HX93AC-D, HX93AC-RP1, HX93DAC, HX93DACD,HX93DAC-RPI (Current Output) TB1 - Relative Humidity TB2 - Temperature 1. + Power Supply 1. + Power Supply 2. No Connection 2. No Connection 3. 4-20 mA Output 3. 4-20 mA Output 6.
HX93A, HX93DA SERIES RH/Temperature Transmitter 7 Models: HX93AV, HX93AV-D HX93AV-RP1 (Voltage Output) TB1 - Relative Humidity TB2 - Temperature 1. + Power Supply 1. + Power Supply 2. + Output 2. + Output 3. - Power Supply 3. - Power Supply 7.
9 HX93A, HX93DA SERIES RH/Temperature Transmitter 9. RH Measured Vs Output Reading % Relative Humidity 54 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Output Current (mA) Voltage (Vdc) 0.8 .05 5.6 .10 6.4 .15 7.2 .20 8.0 .25 8.8 .30 9.6 .35 10.4 .40 11.2 .45 12.0 .50 12.8 .55 13.6 .60 14.4 .65 15.2 .70 16.0 .75 16.8 .80 17.6 .85 18.4 .90 19.2 .95 10. Temperature Output Calculations To calculate Temperature by measuring the current or voltage output use the following formulas.
HX93A, HX93DA SERIES RH/Temperature Transmitter 11 11. Calibration Your transmitter has been factory calibrated to meet or exceed the specifications outlined in this manual. To maintain original specifications it is generally recommended that your transmitter be recalibrated on an annual basis depending on operating conditions. 12. Calibration Procedure for HX93AC (all styles) Relative Humidity Adjustment Recommended equipment: • Humidity Calibration Kit, OMEGA® Model No.
13 HX93A, HX93DA SERIES RH/Temperature Transmitter 13. Calibration Procedure for HX93AC (all styles) Temperature Adjustment Recommended equipment: • RTD Simulator OMEGA® Model No.: CL510-1 • Handheld Digital Multi-meter, OMEGA® Model No.: HHM29 • Dc Power Supply, OMEGA® Model No.: PSU-93 1. Remove enclosure cover 2. Connect the power supply and multimeter as shown in the figure below. 3. Disconnect the 2-wire Connector “J4” from the main Board. 4.
HX93A, HX93DA SERIES RH/Temperature Transmitter 14 14. Calibration Procedure for HX93AV (all styles) Relative Humidity Adjustment Recommended equipment: • Humidity Calibration Kit, OMEGA® Model No.: HX92-CAL • Handheld Digital Multi-meter, OMEGA® Model No.: HHM29B • Dc Power Supply, OMEGA® Model No.: PSU-93 1. Remove enclosure cover. 2. Connect transmitter as shown in figure below. 3. Apply power to transmitter and allow to warm up for 15 min. 4.
15 HX93A, HX93DA SERIES RH/Temperature Transmitter 15. Calibration Procedure for HX93AV (all Styles) Temperature Adjustment Recommended equipment: • 100 Ohm RTD Simulator OMEGA® Model No.: CL510-1 • Handheld Digital Multi-meter, OMEGA® Model No.: HHM29 • Dc Power Supply, OMEGA® Model No.: PSU-93 1. Remove enclosure cover 2. Connect the power supply and multimeter as shown in the figure below. 3. Disconnect the 2-wire Connector “J4” from the main Board. 4.
HX93A, HX93DA SERIES RH/Temperature Transmitter 15A 15A. Display Scaling for HX93DAC (all styles) Your HX93DA transmitter comes with dual built-in LCD indicators for displaying both Humidity and Temperature. Before the meter adjustment or re-scaling can be done the transmitters current output should be checked as per the calibration procedure in Section 12 and 13 to verify the display will be adjusted correctly and match the analog output.
15A HX93A, HX93DA SERIES RH/Temperature Transmitter Temperature Display Scaling Recommended equipment: • RTD Simulator OMEGA® Model No.: CL510-1 • Handheld Digital Multi-meter, OMEGA® Model No.: HHM29 • Dc Power Supply, OMEGA® Model No.: PSU-93 For ºF Display 1. Remove enclosure cover 2. Connect the power supply and multimeter as shown in the figure 7. 3. Disconnect the 2-wire Connector "J4" from the main Board. 4. Connect the RTD simulator to the "J4" header on the main board as shown below. 5.
HX93A, HX93DA SERIES RH/Temperature Transmitter 16 16. Maintenance If your Humidity transmitter will be used in a dusty environment, the protective sensor filter, if clogged, may be removed for cleaning. Unscrew the protective cover and gently blow compressed air through the filter screen. A soft brush may also be used to remove dirt particles from the screen. If the sensor is subjected to 100% condensation, it must be dried to obtain correct readings.
HX93A, HX93DA SERIES RH/Temperature Transmitter Max Loop Resistance: Sensor Type: Ohms = (V supply – 6 V)/.02 A 100 Ohm Platinum RT 18. General Specifications Enclosure Housing: Connections Cable Strain Relief: Wire Connections: Dimensions: Weight Wall Mount Model: Duct Mount Model: 14 Gray Polycarbonate, (IP 65, DIN 40050) NEMA rated up to 13, UL Listed. Nylon, Liquid-tight with neoprene gland for 2.29 to 6.73 mm (.09 to .265") diameter cable. Internal 3-Position Terminal Strip.
WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation.
Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at www.omega.
