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SDT Series

DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER

Copyright

2003.08 ULFA TECHNOLOGY

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1

Instruction Manual

(Digital Differential Pressure Transmitter)

1. General Specification
2. Installation
3. W iring
4. Function
5. Setting & Calibration

Thank you very much for using SDT pressure transmitter. Please read this Instruction Manual carefully

and throughly for the correct and optimum use of the gauge. Kindly keep this Manual in a convenient

place for quick reference.

4 Digit Display, 4-20mA Output

Summary of Contents for JANITOR SDT Series

Page 1: ...fferential Pressure Transmitter 1 General Specification 2 Installation 3 Wiring 4 Function 5 Setting Calibration Thank you very much for using SDT pressure transmitter Please read this Instruction Manual carefully and throughly for the correct and optimum use of the gauge Kindly keep this Manual in a convenient place for quick reference 4 Digit Display 4 20mA Output ...

Page 2: ...ssure Range Refer to range table ELECTRICAL Power Supply DC24V 100 220VAC 50 60Hz Connections 2 screw terminal block Display 4 Digit LCD Warm up Time 15 minutes TRANSMITTER Connections 2 Screw terminal block Output Signal 4 20mADC limited at 30mADC Loop Resistance 0 1100Ω Zero Span Adj One touch Adjustable on Panel PERFORMANCE AT 23 Range Table Zero Output 4 mA Model No Range Resolution Full Span ...

Page 3: ...re to pressure port POWER CONNECTION The following procedures are to be used to install a standard 24VDC main power source 1 Before connection the user must first confirm that the power specification is DC24V or AC220V 2 Verify that the facility s main power source is turned off or disconnected 3 Connect lead cable to power terminal matching polarity as shown in FIG 2 below Take care that wrong wi...

Page 4: ...n number for communication Over pressure warning SDT displays warning on LCD for over pressure positive and negative Upper 4 elements of segment blink for warning when measurement pressure over 10 for high pressure factory setting value And under 4 elements of segment _ _ _ _ blink for warning when measurement pressure under 10 for low pressure factory setting value Factory setting recovery The pa...

Page 5: ...ling time setting It can be set 0 1 5 0 seconds by 0 1 sec resolution PDT reading pressure 0 1sec interval for a setting time and calculate average pressure to display and 4 20mA output ex setting time 2 sec SDT reading pressure 20 times for 2 seconds and calculate average of measured 20 data to display and 4 20mA current output This functions is useful to measure hunted pressure 4mA current setti...

Page 6: ... zero span etc Press MODE key for more than 3 seconds till appear Int on LCD display Press MODE key once till appear FACt on LCD display Press ENTER key once to recall and exit to measure mode Press ENTER key for more than 3 seconds till appear SAvE on LCD display to recall and exist in the setting mode ID No setting ID number is use for address for communication to master It s concern to SDT comm...

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