| Conductors: |
Instrumentation Tray Cables - 7 strand concentric,
Class B bare or tinned copper wire. Available in #20 to 14
AWG (0.519 to 2.08 mm²) for 300 V and #18 to 10 AWG (.0823
to 5.27 mm²) for 600 V |
| Thermocouple Tray Cables - solid alloy wire, matched and
calibrated to ANSI MC 96.1, standard limits of error, thermocouple
extension grade |
| Primary Insulation: |
PVC compound - rated as 75°C (167°F)
dry, 75°C (167°F) wet and -40°C (-40°F) for
Type TW75-40 insulation |
| FR XLPE compound - rated as 105°C (221°F) dry, 90°C
(194°F) wet and -40°C (-40°F) for Type RW90-40
insulation |
| Conductor Assembly: |
Two or three conductors are twisted together
to form a pair or triad. The individually shielded pairs and
triads have a finished lay of 51 mm (2 in). Unshielded pairs
and triads have staggered lays to prevent electromagnetic interference
and cross talk. |
| Individual Shielding: |
When specified pairs and triads are shielded
with 100% coverage aluminum/polyester tape and a seven strand
tinned copper drain wire is used. The shielding tape is designed
to provide total shield isolation from all other shields. |
| Thermocouple pairs are provided with a layer of clear polyester
tape under the shielding tape and have a solid tinned copper
drain wire. A stranded tinned copper drain wire is optional |
| Conductor Identification: |
Instrumentation Tray Cables - pairs are black, white and alpha numeric coded; triads are black, white,
red and alpha numeric coded |
| Thermocouple Tray Cables - the individual conductor insulation
is colour coded as per ANSI specifications for proper identification
of the ANSI cable type and distinction between the positive
and negative wires. |
| Overall Shielding: |
Assembled pairs and triads are overall shielded
with 100% coverage aluminum/polyester tape and a #20 AWG (0.519
mm²) seven strand tinned copper drain wire |
| Jacket: |
90°C (194°F) to -40°C (-40°F) Fire Retardant
PVC |
| Instrumentation cable standard colours are black or intrinsically
safe blue. |
| Thermocouple cable is colour coded as per the ANSI colour
corresponding to the thermocouple alloy type contained in the
construction |
Other colours are available upon request |
