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1.  Make connections to output 

terminals located inside the unit 
as labeled to their function (see 
the above illustration). The 
transmitter operates as a 4-wire 
device. DO NOT TIE THE (-) 

POWER CONNECTION TO 
THE (-) SIGNAL OUTPUT ON 
THE TRANSMITTER.  THIS 
WILL DAMAGE THE UNIT. For 
analog output values refer to 
the table on Page 9. 

1. + Power (18-28 VDC)  

3. +Vout (0-5 volts) 

5. +mA (4-20mA) 

2.  - Power 

 

 

4. -Vout  

 

6. -mA 

Calibration Lockout 

(do not remove) 

°F / °C jumper shown 

in °F position 

OPERATION 

Summary of Contents for DPX-200

Page 1: ...F SLS 554 A Phone 410 820 5111 Toll Free 800 626 7713 Fax 410 822 9633 www ohmicinstruments com Sales sales ohmicinstruments com Service service ohmicinstruments com Ohmic Instruments 3081 Elm Point I...

Page 2: ...ssion of Ohmic Instruments Information contained in this manual is believed to be accurate and reliable however no responsibility is assumed by Ohmic Instruments for its use Ohmic reserves the right t...

Page 3: ...ryer systems as well as ambient conditions The DPX 200 determines the dew point temperature from the measurements of water vapor and dry bulb temperature of the air sample These dew point calculations...

Page 4: ...smitter operates as a 4 wire device DO NOT TIE THE POWER CONNECTION TO THE SIGNAL OUTPUT ON THE TRANSMITTER THIS WILL DAMAGE THE UNIT For analog output values refer to the table on Page 9 1 Power 18 2...

Page 5: ...nnecting to a serial port If your DPX 200 includes the optional RS 232 adapter cable it can be con nected to your computer s 9 pin PC serial COM port If your computer has a 25 pin COM port 25 pin to 9...

Page 6: ...indicating the version of the embedded program The computer will then display three numbers Relative Humidity Dry Bulb Temperature and Dew Point New readings will be displayed every few seconds and a...

Page 7: ...from 0 to 32767 For n 0 1 and 2 automatic trans mission is turned off Default value is n 3 seconds Note To enable the screen to dis play what you are typing go to the menu bar in Tera Term click on Se...

Page 8: ...nication Setup HC 610 10K NTC Thermistor 45 to 90 F 40 to 80 F 4 F from 40 to 20 F 2 F from 20 to 80 F 0 200 F 1 F Probe 0 to 185 F Electronics 40 to 120 F 175 psig for remote probe 10 sec for 63 step...

Page 9: ...27 0 542 5 733 4 1 833 9 867 32 3 000 13 600 63 4 292 17 733 26 0 583 5 867 5 1 875 10 000 33 3 042 13 733 64 4 333 17 867 25 0 625 6 000 6 1 917 10 133 34 3 083 13 867 65 4 375 18 000 24 0 667 6 133...

Page 10: ...he instrument returned transportation prepaid SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shipments of Ohmic Instruments products should be made via United Parcel Service or Best Way prepaid...

Page 11: ...11...

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