The new pressure test device combines three test methods in one electronic device. “General test rules” individual selectable acc. requirements from the customer. The requirement from Deutsche Telekom acc. “ZTV-TKNETZ 40”. The low-pressure test acc. EN 1610:2015 as well as worksheet DWA-A-139:2009
The low-pressure test is exclusively performed for leakage test of cable ducts with small wall-thickness. Those are being used for pulling of various cable types. The target is to proof the tightness against intrusion of groundwater, sand, sediments, etc. Those elements soils the protective ducts and complicate the pulling of cables.
With regards to the test methods those refers to the existing requirement of acceptance of waste water drain and ducts. For the testing of protective ducts the version “air” will be used only. Customers request low-pressure test of protective ducts against DIN EN 1610:2015 and acc. procedure “air” in the version LC or LD.
According which test method is determined by the customer “General test rules”.
Version LC, test pressure 0,1 bar (100 mbar, 10 kPa), duration 3 min, permitted pressure drop 15 mbar (1,5 kPa)
Version LD, test pressure 0,2 bar (200 mbar, 20 kPa), duration 1,5 min, permitted pressure drop 15 mbar (1,5 kPa)
The DPG 17U Universal pressure test device for test of cable ducts with regards to protective ducts and subducts working in the range of 0…7 bar. The operation is made by a 7” colour-graphic-touch display. The new device support the user through a simple and menu-driven operation. With the help of a matrix (table) three different test methods can be selected. Those are “General test rules” individual selectable acc. requirements from the customer, the requirement from Deutsche Telekom acc. “ZTV-TKNETZ 40” and the low-pressure test acc. “EN 1610:2015”. This results in a maximum support for the user.
The result of the pressure test is summarized in a clear test protocol with three core areas. The test protocol will be stored on the device and can be loaded by a USB-interface to a customary PC. ?
The left shown 1. protocol shows a passed test “Test criteria fulfilled” ?
The left shown 2. protocol shows a failed test “Test criteria not fulfilled”
Upper area: General data like: Contracting company with name of operator, construction site, duct, temperature, times, measurement data with calibration status
Middle area: Result of the pressure test through colour-marked message: “Test criteria fulfilled” or “Test criteria not fulfilled”
Lower area: Graph with the two phases settling time and main test
Low-pressure connection unit for pressure test of 1 cable duct for power- and fibre cable installation.
The low-pressure test is exclusively performed for leakage test of cable ducts with small wall-thickness. Those are being used for pulling of various cable types. Thereby the DN 110 is the most frequently used protective duct. The range of avail-able connection accessories is from duct-ID 70 until 200 mm.
Shut-off bladders to lock off the pipeline to be tested. Shut-off bladders are used on the opposite side of the test location. The short dimensions of the Mini version allow space-saving installation of pipe bends also.
Foot pump with double stroke and safety valve 2.5 bar to inflate SBM shut-off bladders and PBM test bladders. The use of a second foot pump for the second pipe end saves considerable installation time.
Conduit calibration and leakage-test unit. Calibration and leakage-test before starting the cable blowing-in procedure is the safest guarantee for successful installation of fibre optic cables. Unit consisting of:
Compressed air regulator with adjustable tripod.
5 m high pressure hose, calibre D 35, transmitter, for duct-D 50x4,6.
All other diam. of calibres are available, please see extensions below.
With conduit plug and catch box for the piston.
With electronic detector 33 kHz . Compl. set in alu-case 780x380x330.
Conduit calibre balls, Polyamide, two pcs. special short length for passing narrow duct bows. The ball-Ø should be approx. 80-85 % of the nominal internal diam. of the duct.
Conduit calibre of polyamide. The calibre diameter should be approx. 80-95 % of the nominal internal diameter of the duct. Please ask your customer which calibre diameter he expects.
