Products : Instrumentation : Hand Held Indicators : TR200 Battery Powered Strain Gauge Handheld Indicator

TR200 Battery Powered Strain Gauge Handheld Indicator

TR200
 
 

Features

  • Powered by internal battery.
  • Handheld and portable.
  • Environmentally sealed to IP65.
  • 4½ digit LCD display, with battery low warning indication.
  • Flush mounted push buttons
  • Microprocessor based, allowing single pass calibration facility.
  • Wide range of options available, including; Intelligent Input, Serial Output, Analogue Outputs, Trips and Data Logging

The TR200 indicator is a completely portable, 4½ digit precision instrument that is ideally suited for use in the harshest of environments or in the laboratory. It is designed to accept the signal from any strain gauge based sensor, with an output sensitivity of up to ±60mV/V.

The menu structure facilitates Auto Calibration, Decimal Point Position setting, Fixed Zero (count-by) setting and Digital Filtering rate. Auto-Zero and Peak/Valley Hold functions are available on the front panel, with single key press operation.

The menu options offer the engineer the ability to tailor the instrument to an application. Once set, all the menu keys can be disabled to provide the user with the simplest of indicators ideally matched to their requirements. The TR200 is able to store the parameters for up to 10 sensors, making it ideal for multi-sensor monitoring; allowing switching from one sensor to another, without the need of any calibration adjustment.

System expansions are available to enhance the TR200 capabilities. These include; RS232 output for printing or data log downloading, Intelligent sensor recognition, allowing automatic recall of a sensors parameters when it is plugged in to the TR200.  Additional options include; Dual Trip outputs, Voltage and Current outputs and Data Logging.

The TR200 is supplied complete with a universal 110/230vac battery charger and carry case.

Specification

Performance

Input type Strain Gauge Full Bridge Sensors
Input range ±0.6mV/V to ±7.5mV/V for full scale (±19999)
Accuracy ±2 digits (±0.01% full scale)
Thermal drift < 100 ppm/°C
Excitation Voltage 5Vdc (±1%), 59mA maximum
Minimum bridge resistance 85Ω (4off 350Ω sensors in parallel)
Internal battery 6V rechargeable sealed battery
Battery life 40 hours, with 350Ω sensor
Update rate 200mS Peak/Valley Hold capture rate is the same as the display

Indication

Display Type 4½ digit LCD display, 10mm high digits
Display Resolution ±1 digit
Annunciators Lo Battery warning within LCD display
  annunciation for Peak Hold indication
Identification Electronic serial number, stored for customer support purposes

Control variables

Front panel user keys Flush Mounting Keys for-ON Switches TR200 power on
OFF Switches TR200 power off
ZERO Zero’s display (±100% range)
CALIBRATE Shunts 100kΩ resistor across bridge (for cal check)
MENU, SELECT, INCREMENT & ACCEPT keys are used to initially set up the TR200 and can be locked to prevent tampering.
Least Significant Digit (count by 1, 5 or 10)
parameters Digital Filtering (updates 0.2, 0.8, 1.6 & 3.6 sec)Settable Zero Tracking Enable (active, tracks ±3 LSD)
Decimal Point Position
Front Panel Key Locking

Mechanical

Electrical connection 5 pin Binder socket (mating plug supplied)
Weight 600 grams
Legends Self adhesive labels for engineering unit identification

Environmental

Operating Temperature -10°C to +50°C
Environmental Rating IP65 (when mating half connected)
Enclosure Type ABS, robust yellow case, supplied in separate transit carry case

Dimensions

tr200 drawing

Downloads

Click here to download - TR200 Datasheet

Click here to download - TR200 Instruction Manual

Suggested Instrumentation

The TR200 can be supplied calibrated as a system with any of LCM Systems products. If ordered with any sensor, this calibration will be performed, with traceability to UK National Standards at no extra cost.

Options

The options detailed below are standard options, which are readily available. They are internally fitted to the TR200. The options can either be fitted singularly or combined to expand the TR200 further. LCM Systems have produced a large number of variants of the TR200 and welcome enquiries for the more unusual or specialist applications.

Logic Input ­ Order code L
This option is a logic input, which allows intelligent recognition of a sensor. The option introduces an extra 12-pin Binder style connector. By linking 5 pins in the correct sequence (details are provided in the manual) on each sensor connected, the TR200 will automatically recognise which sensor is connected. The TR200 has the capability of storing the calibration data for up to 10 sensors. When connected the TR200 will automatically recall all the parameters set for that sensor, including; span and zero settings (the display scaling information), filter settings, decimal point position and if any output options are included, it will also recall these parameters. This option can be further enhanced with an external switching box, which we can also supply. This allows you to connect all the sensors into the switching box, and simply select the sensor that you want to monitor. The setting of these parameters can be locked out after setting up, to prevent tampering.

Serial input ­ Order code R
This option provides an RS232 output. The output continuously flows when the TR200 is powered on, by default. There is also an option, which needs to be specified at time of ordering, which enables the data output to be stopped and started manually through the front panel controls of the TR200. The data stream is 2400 baud, 8 data bits, no parity, 1 stop bit. The data output is the display value, with decimal point positioning. The string terminator is CHR$ (13). A simple software program is available, for customer support purposes and is available on request. The output is provided via a 12-pin Binder style connector.

Voltage output ­ Order code V
The voltage output option gives an analogue output range of ±5 volts for display readings of ±5000, ±10000, ±15000 or ±20000. These ranges are easily scaled using the front panel keys, via the simple menu structure. The setting of these parameters can be locked out after setting up, to prevent tampering. The integrity of the output is protected by the TR200 battery management system, which ensures that the battery level does not drop to a level that affects the voltage output. The output is provided via a 8-pin Binder style connector.

Current output ­ Order code I
The current output option gives an analogue output range of 4-20mA (driving into a maximum of 250Ω) for display readings of ±10000, ±20000, 0-10000 or 0-20000. These ranges are easily scaled using the front panel keys, via the simple menu structure. The setting of these parameters can be locked out after setting up, to prevent tampering. The integrity of the output is protected by the TR200 battery management system, which ensures that the battery level does not drop to a level that affects the current output. The output is provided via a 8-pin Binder style connector.

Dual trip output ­ Order code T
This option allows the setting of two independent trip levels. The trip values are entered using the front panel keys of the TR200, using the display to enter the trip value in real display units. The trip energises when the displayed value exceeds the set trip level value. The two relay outputs supply SPCO contacts rated at 1amp at 240vac. The output is provided via a 8-pin Binder style connector.

Data logging ­ Order code DL
The data logging option allows for up to 4063 single samples to be stored or, dependant on the sample interval selected (which can be between 0.2 seconds and 52 seconds, 0.2 second steps), over 115 hours of data can be collected and stored. The instrument can be configured to continually log data according to the interval selected, or manually log upon demand (using front panel key press). Each sample stores a user definable test number, the interval between samples, the selected channel number and the displayed reading. All this data can be downloaded via an RS232 serial port, which is supplied with this option.

Applications

  • Multi-channel load cell systems
  • Fleet hire load cells
  • Portable force measurement
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