Vaisala Drycap DMT152, User Manual

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• LED cable option that enables a visual indication of transmitter status: LED lit when
measurement is frozen (for example, purge active), blinking for malfunction alarm
2.1.2 Transmitter Structure
When the transmitter is delivered, the filter is protected by a yellow transport protection cap
that keeps the sensor dry. The transport protection cap should be left on the transmitter
during storage. Remove the transport protection cap before installing the transmitter.
The transmitter body does not have user serviceable parts inside, and is not designed to be
opened. Opening the transmitter will void the warranty.
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2
3
4
5
Figure 1 DMT152 Probe Parts
1 4-pin M8 connector I : analog output channels and operating power
2 4-pin M8 connector II (shown with protective cap): digital output (RS-485) and operating
power
3 Tightening nut (30 mm)
4 Connection thread, alternatives:
• ISO G1/2"
• NPT 1/2"
• UNF 3/4"-16 2A
• UNF 5/8"-18
5 DRYCAP sensor protected with stainless steel mesh filter (see Changing the Filter
(page 53) )
When installing a DMT152 transmitter with ISO or UNF thread, use a sealing ring to achieve a
tight installation. Three copper sealing rings are provided with the transmitter, and more can
be ordered from Vaisala. Note that the sealing rings for ISO and UNF threads are different. See
Spare Parts and Accessories (page 63) .
DMT152 User Guide M210865EN-J
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