Overview
In truck applications where electronic registers must be able to operate in adverse conditions, the Trac -40 offers an economical solution for flow measurement and control.
Designed to operate with turbine, positive displacement or coriolis flowmeters, the Trac -40 meets the requirements for custody transfer of liquids throughout the world.
Based on Contrec’s 400 Series instruments, the Trac- 40 includes:
- Rugged facia and switches
- Robust Connectors
- Backlit Display
- Mounting Feet
- Conformal coated electronic assemblies similar to those used by the military
Specifically designed for truck installations, the Trac- 40 is a register that will survive in the toughest of environments for electronics.
Preset or Start/Stop Mode
The Trac -40 can be programmed to operate as either a Preset system where the required quantity is entered prior to a delivery, or as a Start/Stop system where an unspecified quantity and be delivered.
Both modes have relay outputs which can be used to control pumps and valves.
Custody Transfer Approval
The Trac -40 includes a dual pulse integrity check of the input signal and temperature compensation to API Tables as required for custody transfer.
Temperature compensation is selectable to include compensation for general petroleums, LPG or other products. If temperature compensation is not required it can be disabled.
Features
- Rugged
- Temperature Compensation
- Complies with international metrology standards
- Prints delivery tickets
- Nema 4X or IP65 enclosure
Applications
- Petroleum tankers with metered deliveries
- LPG Trucks
- Aircraft refuelling
- Anhydrous Ammonia
- Chemical Trucks
- Heating Oil Trucks
Truck Interlocks
Because the Trac- 40 is designed for truck applications, speacial features unique to truck applications are incorporated in to the system including:
- A low frequency input cutoff which will ignore spurious flowmeter pulses which may be caused by pipe vibration as the vehicle travels between deliveries.
- A transaction timeout which is incorporated into the software to prevent a partial delivery at one location and then a continued delivery at a second location without resetting the register (termed “riding the ticket”).
- Delivery totals continue to be displayed even if power is disconnected.
- A printer integrity test which will signal an error message if there is a printer problem.
- 12 Volt dc and 24 Volt dc operation
Communications
The Trac- 40 can operate in one of the following modes:
1. Printer Only
Interfaces to an industry standard slip printer or standard line printers.
2. On-Board Computer
With an order on-board computer transaction results can be uploaded to the computer at the end of the delivery.
Specifications
Physical
Display
6 digit (11.8mm high) backlit LCD with
automatic ranging
Keypad Buttons
Switches:
Four heavy duty switches
Weights and Measures Seal:
A program access switch located behind a screw on the rear facia, can be affixed with a lead seal to prevent tampering
Standard Enclosure
Dimensions:
144mm (5.7″) wide x 72mm (2.8″) high x 190mm (7.5″) deep. The connector backshells will extend the depth to 235mm (9.3″).
Material :
Anodised aluminium
Sealing:
IP65 (Nema 4X weatherproof
Weight:
1.5kg (approx)
Cable Connection:
Four “D” style connectors
Explosionproof Enclosure
Dimensions:
285mm (11.2″) wide x 287mm (11.3″) high x 231mm (9.1″) deep. The connector backshells will extend the depth to 235mm (9.3″).
Approvals:
Cenelec and CSA (NRTL/C) applied for.
Operational
Power Requirements
12 Vdc to 28 Vdc. 3 watt maximum 130mA typical current (no options)
Operating Temperature
0 to 60ºC
Communications
Dual RS232 shared port.
Inputs and Outputs
Flow Inputs
Input Frequency:
0-10kHz with single pulse input
0-2kHz with dual (quadrature) input
Note: Dual pulse is for pulse verification only
and does not detect reverse flow
Pulse Intergrity
(Dual Pulse Only)
If a pulse failure is detected the system will alarm and stop flow on that channel
Note: This is in accord with API Standards, Chapter 5, Section 5; AS2702 – 1984;
and ISO6551-1982
K-factor
Linear:
Single point 0.001 to 50000.0
Non Linear:
10 Points 0.001 to 50000.0
Temperature Inputs
Input Signal:
RTD (4-Wire)
Range:
LPG:
-45°C to 60°C (-49°C to 140°C)
Petroleum:
-100°C to 200°C (-148°C to 392°C)
General Liquids:
-273°C to 200°C (-459°C to 392°C)
Anhydrous Ammonia:
0°C to 40°C (32°F to 104°F)
Input Circuit:
12 bit A/D converter
Correction:
To API Table 24B/54B for gasoline, diesel, jet fuel; Table 34/54 for LPG; and Table 24A/54A for crude oil. Also correction for anhydrous ammonia is available
Valve Control Outputs
(dual Stage on/off)Max Contact Voltage:
30 Vdc or 30 Vac
Max Current:
3A
Pulse Output
Pulse Width:
10 mSec
Max Frequency: 49 Hz
Important: Specifications are subject to change without notice.