Troubleshooting; Spare Parts And Accessories - DALEMANS DAT 420 Instruction Manual

4.4.

Troubleshooting

Problem
Non-zero reading
Non-zero reading when no gas is present
Reading too high or too low
Zero reading in presence of gas
4.5.

Spare parts and accessories

Part or accessory
Cable gland - Ex "d" M20 (6.1 - 11.7 mm)
Ferrite
Junction box - Ex "d"
Key for locking screw (1.5 mm hex key)
O-ring 17 x 2 mm
Screw - Locking screw of the junction box cover
Screw - M4 x 6 mm
Screw for locking the body of sensing head
Sensing head - FPH01
Sensor gasket
Sintered metal filter
Spanner for base of sensing head (30 mm)
Spanner for top of sensing head
Stopper plug - Ex d M20
Terminal block - Ex "e" 2 position
Transmitter board - 4-20 mA
* Depends on the type of sensor used
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Possible cause(s)
▪ Possible presence of gas in the detector area.
▪ Detector needs calibration.
▪ Wrong or defective electrical connection.
▪ Sintered or sensor blocked with dust.
▪ Sintered or sensor contaminated. Replace sin-
tered AND sensor.
Part number
PRE00000032
FER00000001
BOI00000188
OUT00000115
MEC00000012
VISVIS00067
VISVIS00042
VISVIS00066
*
MEC00000018
MEC00000010
OUT00000114
OUT00000113
PRE00000033
BOR00000087
BASTRX00017
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