Flowserve TRV5-40 - Manual (Page 21)


System Malfunctions
– continued –
Note
The system malfunctions caused by the temperature transmitter TRV 5-40 will also
result in system malfunctions in the control units NRS -40. and NRS -40., which
means that the output contacts open instantaneously and the signal outputs are
energised/de-energised in a pulse-controlled way.
When contacting our Technical Services please state the indicated error code.
Basic values of measuring resistors
°C 0 0 0 30 40 50 60 70 80 90 00 Ω /grd
0 00.00 03.90 07.79 .67 5.54 9.40 3.4 7.07 30.89 34.70 38.50 0.385
00 38.50 4.8 46.06 49.8 53.57 57.3 6.04 64.76 68.47 7.6 75.84 0.373
00 75.84 79.5 83.7 86.8 90.46 94.08 97.70 0.30 04.88 08.46 .03 0.36
300 .03 5.58 9.3 .66 6.8 9.69 33.9 36.67 40.5 43.6 47.06 0.350
400 47.06 50.50 53.93 57.34 60.75 64.4 67.5 70.89 74.5 77.60 80.93 0.338
500 80.93 84.6 87.57 90.87 94.6 97.43 300.70 303.95 307.0 30.43 33.65 0.37
600 33.65 36.86 30.05 33.4 36.4 39.57 33.7 335.86 338.99 34.0 345. 0.35
700 345. 348.30 35.38 354.45 357.5 360.55 363.59 366.6 369.6 37.6 375.6 0.304
800 375.6 378.59 38.55 384.50 387.45 390.38 0.95
Basic values of measuring resistors according to DIN 43760 for Pt 00.
Checking the switchpoints
The switchpoints should be checked during commissioning and whenever the measuring elements of
the temperature sensors or of the temperature transmitter TRV 5-40 are being exchanged.
To check the switchpoint “MAX temperature limit (°C)” the adjusted limit value must be exceeded.
The equipment must then response as if there were an alarm situation.
Checking Installation and Functions