Rice Lake Combination System - Precision Loads On-Board Weighing Systems - Manual (Page 19)

Applications 15
Install Interconnecting Cables
1. Plug transmitter leads into 4-pin pressure transducer output connector(s) and screw tight.
2. Run the 2-wire truck or trailer cable from the three pin transmitter connector into the truck cab or trailer
connector, ensuring protection of the cable from moving parts, road hazards, heat, corrosives, etc. Provide
for a small service loop in the two-wire cable. Do not attach the two-wire cable to air lines.
3. Tie the cable down using heavy-duty cable ties at no more than 18" intervals.
Important
The stainless steel transmitter is a sealed, encapsulated unit and is not field serviceable. Do not attempt
to weld-on or open the unit or remove the unit's connectors or cable strain relief parts. Opening the unit
will void Rice Lake warranty coverage.
Driver Notes
When positioning a trailer for loading do not hard brake the vehicle, as this could result in torquing of the
suspension and potential scale errors. Softly brake the trailer into loading position then apply the parking brake
once the tractor and trailer brakes are released.
Service Notes
Table 4-1. Service Notes
Service Notes Fittings and Tees (Weatherhead)
Transducer Adapter Thread: 1/4 NPT (female) 1868 X 4 (1/4 NPT Fitting)
Fitting Tightness Torque: Maximum 25 ft/lbs 1868 X 6 (3/8 NPT Fitting)
Pressure Rating: 250 psi (17 bar) per sensor 1868 X 8 (1/2 NPT Fitting)
Output: 0-100 mV 1864 X 4 (1/4 NPT Tee)
Isolation: Greater than 1000 M ohms 1864 X 6 (3/8 NPT Tee)
Pinouts: A=Exc+ B=Sig+ C=Sig(-) D=Exc (-) 1864 X 8 (½ NPT Tee)
Transmitter Model Numbers
Table 4-2. Transmitter Model Numbers
Transmitter Model Numbers Application/Description
Underside Stamp RLWS Model
7052 114191 Standard Dual Lead Air Transmitter
7051 114197 Standard Single Lead Air Transmitter
8052 114193 Auto ID System (9705) Dual Lead Air Transmitter
8051 Auto ID System (9705) Single Lead Air Transmitter
XXXX XXXX Dual Lead Air Transmitter. Replacement for 9100 system transmitter.
4.1.2 Slip Spring/Torque Arm Air Suspension
Some air suspensions may not transmit air bag pressure changes as accurately as desired due to mechanical
influences of a slip spring and torque arm linkage. These types of suspensions are less common and used in older
models of truck and trailer manufacturers, but such suspensions may require using other onboard scale solutions,
such as 5th wheel or kingpin plate load cells.