937A Multi-Sensor System
A.14
A Convection Pirani sensor is connected to the Controller's
convection sensor module with a multiconductor shielded
cable. It has a 9-pin "D" connector at each end as shown here.
This connector is equipped with integral strain relief. Screw the
strain reliefs into the mating standoffs on the rear of the
Controller for good contact and to avoid excess stress on the
connectors.
If excess stress is applied to the cable, use separate
strain relief to prevent damage to the sensor, cable or the
Controller. Cables are available from HPS
TM
in standard
lengths of 10, 25, 50, and 100 feet and in custom lengths
up to 500 feet.
Some applications may require the use of special cables, such as where
the connection must be routed through restrictive barriers or through a
conduit. Custom cables may be fabricated for these situations using the
information provided in the figure shown on the following page. The
maximum length of the sensor cable is 500 feet. Use a "D" connector with
integral strain relief for all applications.
9-pin,"D" connector on Series 317 Convection
Pirani Sensor module
Pin
Description
1,6
bridge drive, +
5,9
bridge drive, -
2
chassis ground
3
4
signal -
7
bridge sensor leg
8
bridge reference leg