Hybrid cables - WMT700

WMT700 Series User Guide

Document code
M211095EN
Revision
K
Language
English
Product
WMT700
Document type
User guide
If you have a fully-heated WTM700, use a hybrid cable.

Vaisala provides the following open-lead hybrid cables for connections to other host systems:

Table 1. Hybrid cables
Cable Product code Description
Cable 2 m CBL210706-2MSP Cable carries through all signals from WMT700.
Cable 10 m CBL210706-10MSP
Cable 15 m CBL210706-15MSP
Cable 26 m CBL210706-26MSP
Cable with custom length CBL210706-SPEC Cable carries through all signals from WMT700. Define the length when you order WMT700.
Long cables may decrease WMT700 capabilities, see Power and cable recommendations.

WMT700 cables are shielded hybrid cables with several different wires. The cable contains 2 x 2 x 0.14 mm2 + 7 x 0.14 mm2 + 2 x 0.25 mm2 + 4 x 1.0 mm2 wires with screen.

The sensor and the cabling must be protected with a fuse or a circuit breaker. The maximum sizes of the fuses or circuit breakers protecting the power lines:

  • 13 A with type B, C, or D (IEC/EN 60898-1 or UL 1077) tripping characteristics and specified for at least 40 V DC voltage operation for heating power supply.
  • 1 A with type B (IEC/EN 60898-1) tripping characteristics and specified for at least 40 V DC voltage operation for operating power supply.

The circuit breaker can be either 2-pole (on both positive and negative/ground) or 1-pole (positive wires). You can also replace the circuit breaker with a cartridge fuse with T (slow acting) tripping characteristics.