Differential Pressure Transmitter
DTI (2-WIRE) AND DTU (3-WIRE) SERIES
INSTALLATION INSTRUCTIONS
Fig. 1 Differential Pressure Transmitter
MANUAL DIFFERENTIAL PRESSURE TRANSMITTER
The Honeywell DTI series (2-Wire Differential Pressure Transmitters) and DTU series (3- Wire Differential Pressure Transmitters) are designed to measure differential pressure, under pressure and over pressure conditions. These transmitters are used for monitoring of liquid and gaseous, nonflammable, and non-aggressive media.
SAFETY INSTRUCTION AND LIABILITY
Read instructions before use. This regulating and control unit must be installed in accordance with the applicable regulations. The existing safety regulations, the intended use and the technical data must be strictly observed. According to these regulations, plants must be zero-potential and secured against inadvertently restart. The product cannot be used for U.S. FDA-controlled application areas. For damage caused by improper use no liability is assumed.
WARNING
Electrical equipment may only be installed, added to, changed or maintained by authorized electricians.
Never work on electrical installations, if you are not a professional! No voltage must be applied if you work on electrical installations. The electrical connection must be compliance in accordance with the Low Voltage Directive.
DIMENSION
ATTENTION: Check the differential pressure transmitter for damages. Do not mount the transmitter on uneven surfaces! Do not use if damaged!
MOUNTING: The transmitter can be mounted in various locations and is not sensitive to installation position. There are several mounting brackets available as accessory.
PRESSURE CONNECTION: The pressure connections are 2 x G1/4 inner thread
Fig. 1. Dimensions in mm
ELECTRICAL CONNECTION
ATTENTION: Electrical equipment may only be installed, added to, changed or maintained by authorized electricians. No voltage must be applied if you work on electrical installations.
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| Connector, male DIN EN 175301-803-A |
Connector, female, unshielded Cross-sectional area: 0.34 – 1.5 mm² Cable outlet: 6 – 8 mm DIN EN 175301-803-A |
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| Fig. 3. Electrical Connection | |
Table 1. 2-Wire electrical connections
| 2-WIRE | PARAMETER | SPECIFICATION |
| 1 | Supply voltage | 18 to 30 VDC |
| 2 | Output signal | 4 to 20 mA |
| 3 | N.C. | |
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N.C. |
Table 2. 3-Wire electrical connections
| 3-WIRE | PARAMETER | SPECIFICATION |
| 1 | Supply voltage | 18 to 30 VDC, 18 to 25 VAC; 50-60 Hz |
| 2 | Output signal | 0 to 10 V |
| 3 | GND | |
|
N.C. |
MAX PERMISSIBLE DIFFERENTIAL LOAD (P1 > P2) AND PERMISSIBLE SYSTEM PRESSURES
Table 3. Permissible Differential Load
| MEASURING RANGE PRESSURE CELL (A) | MAX. LOAD (P1 – P2) (REVERSIBLE) | BURSTING OVER PRESSURE (P1 – P2) (IRREVERSIBLE) | BURSTING UNDER PRESSURE (P1 – P2) (IRREVERSIBLE) |
| 0 … 2 bar | 6 bar | 8 bar | -1 bar |
| 0 … 6 bar | 20 bar | 35 bar | -1 bar |
| 0 … 10 bar | 30 bar | 50 bar | -1 bar |
| (A) NOTE: In case of a under pressure load more than -1 bar (P1 – P2), the pressure cell will be destroyed! Designed for pressure rating PN40. Burst system overpressure on both sides 60 bar. | |||
NOTES ON THE PRESSURE CONNECTION
ATTENTION: A correct function is only valid for the condition: P1 > P2. Connect the higher pressure to P1+ and the lower pressure to P2-. Please note the marking P1+ and P2- on the top of the plastic cover and the product label.
Fig. 2. Pressure Cell Connection
By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell , its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.
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Documents / Resources
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Honeywell DTI Series Differential Pressure Transmitter [pdf] Installation Guide DTI Series, DTI Series Differential Pressure Transmitter, Differential Pressure Transmitter, Pressure Transmitter, Transmitter |