RV "KRONPRINS HAAKON": AIR PRESSURE SENSOR (FOR AIRGUNS) <back to main page>

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PRESSURE SENSOR 0..250 Bar(g), 4-20 mA interface, TECSIS Mod. P3276

Pressure transmitter manufactured by Tecsis has been used on R/V "HÅKON MOSBY and R/V "G. O. SARS" with good results since 2001. Norwegian supplier: IKM - Instrutek

TECSIS 4-20 mA PRESSURE TRANSMITTER, MODEL P3276
August 2011, purchase order for R/V "Håkon Mosby": Description: Model: VDTP3276B084601 Pressure transmitter Range: 0...250 bar Sensor interface: 4-20 mA Threading: G½" Accuracy: ±0,5% Identical model was ordered in May 2012 (as spare unit for R/V "Håkon Mosby").	Tecsis Pressure Transmitter model P3276. Data sheet Tecsis mod P3276 (complete P/N: VDTP3276B084601).
As ordered for R/V "G.O. SARS", 21 July 2004: --------------------------------------------------- Pos Qty Description --------------------------------------------------- 1 (1) Pressure transmitter Model: VDO 0-250 Bar pressure transmitter 4-20 mA, 0.5% accuracy, 0.5"R SS 304 housing, SS 316 wet parts Supplier P/N: VDT3376084001 2 (1) Display Model: 1929.300.001 incl. option: 'Digital interface RS-485'
Oct 2001 purchase order (for R/V "Håkon Mosby"): A] Pressure transmitter ----------- Manufacturer: Tecsis, www.tecsis.de Model no.: VDT3376084001 Range: 0 - 250 Bar Output: 4 - 20 mA Accuracy: 0.5 % Material: SS 304 housing, SS 316 wet parts B] Display ------- Manufacturer: Tecsis, www.tecsis.de Model no.: 1995 Data interface: RS-232

SENSOR INSTALLATION

On R/V "Håkon Mosby" (click to enlarge).

Air pressure sensor installation on R/V "Håkon Mosby", above instrument room door. HP line on the right. Click to enlarge.

On R/V "G.O. Sars" (click to enlarge).

NOTE: Photo is taken before pressure sensor was installed. It most likely replaces the manometer shown. This is on 2nd deck, near HP outlet and airgun control cables junction box.

R/V "G.O. Sars, 2nd deck, near HP outlet and airgun control cables junction box. Click to enlarge.

SENSOR DISPLAY UNIT

As used on RV "G.O. Sars" (not produced any longer)

Tecsis process display mod 1929.300.001

Manufacturer: Tecsis
Part no.: 1929.300
Supplier: Instrutek, www.instrutek.no
Data interface: RS-485, so RS485 / RS232 interface required
Datasheet: PDF
Configuration: PDF
Programming: PDF

HIGH-PRESSURE PIPING SYSTEM

SOFTWARE FOR AIR PRESSURE MONITORING & ALARM

The sensor display unit is furnished with RS232 (or RS485) interface. A serial command can be sent to the unit and it will respond with measurement value. Python data collection software running on a Linux PC issues sampling commands continuously. When airguns are fired the software extracts the highest pressure value that had been registered lately, in order to plott plot air pressure as function of shot number. The result is shown below. Other process parameters are also sampled; "Birds" refer to devices that keeps the streamer at a certain depth and are not related to our avian friends :-)